621B TRACTOR 45P00001-02711 (MACHINE) POWER TRAIN Caterpillar SIS

WHEEL TRACTOR 621B WHEEL TRACTOR 45P
621B TRACTOR 45P00001-02711 (MACHINE) UEG0807S 621B 45P (1973)

Parts group 621B:

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POWER TRAIN

CONTROL GP-DIFFERENTIAL LOCK

8D-8010 CONTROL GP-DIFFERENTIAL LOCK

8D8010 DIFFERENTIAL LOCK CONTROL GROUP
Serial No. 45P1217-Up
6D856 Valve parts are shown on Page 45

8D-1010 DIFFERENTIAL LOCK CONTROL GROUP

8D1010 DIFFERENTIAL LOCK CONTROL GROUP
Serial No. 45P1 to 45P1216 inclusive
6D856 Valve parts are shown on Page 45

CONTROL GP-TRANSMISSION HYD

3P-2977 CONTROL GP-TRANSMISSION HYD

3P2977 TRANSMISSION HYDRAULIC CONTROL GROUP--Part 1 of 2
Serial No. 45P1 to 45P2106, 2109, 2114 & 45P2129 inclusive
Part of 3P374 Transmission Arrangement shown on Pages 40 & 40A

3P-2977 CONTROL GP-TRANSMISSION HYD

3P2977 TRANSMISSION HYDRAULIC CONTROL GROUP--Part 2 of 2
Serial No. 45P1 to 45P2106, 2109, 2114 & 45P2129 inclusive
Part of 3P374 Transmission Arrangement shown on Pages 40 & 40A
Valve parts are shown on Pages 45 & 48

7G-2779 CONTROL GP-TRANSMISSION HYD

7G2779 TRANSMISSION HYDRAULIC CONTROL--Part 1 of 2
Serial No. 45P2107, 2108, 2110 to 2113, 2115 to 2128 and 45P2130-Up
Part of 7G2780 Transmission Arrangement shown on Page 40B

7G-2779 CONTROL GP-TRANSMISSION HYD

7G2779 TRANSMISSION HYDRAULIC CONTROL--Part 2 of 2
Serial No. 45P2107, 2108, 2110 to 2113, 2115 to 2128 and 45P2130-Up
Part of 7G2780 Transmission Arrangement shown on Page 40B
7G2844 Valve parts are shown on Page 48C

DIFFERENTIAL & BEVEL GEAR GP

8D-5059 DIFFERENTIAL GP

8D5059 DIFFERENTIAL GROUP
Part of 8D5060 Differential and Bevel Gear Group shown on Pages 72 & 73C

8D-5060 DIFFERENTIAL & BEVEL GEAR GP

8D5060 DIFFERENTIAL AND BEVEL GEAR GROUP--Part 1 of 2
Serial No. 45P1 to 45P949 inclusive
8D5059 Differential parts are shown on Page 71

8D-5060 DIFFERENTIAL & BEVEL GEAR GP

8D5060 DIFFERENTIAL AND BEVEL GEAR GROUP--Part 2 of 2
Serial No. 45P1 to 45P949 inclusive

8D-5060 DIFFERENTIAL & BEVEL GEAR GP

8D5060 DIFFERENTIAL AND BEVEL GEAR GROUP--Part 1 of 2
Serial No. 45P950 to 45P2133 inclusive
8D5059 Differential parts are shown on Page 71

8D-5060 DIFFERENTIAL & BEVEL GEAR GP

8D5060 DIFFERENTIAL AND BEVEL GEAR GROUP--Part 2 of 2
Serial No. 45P950 to 45P2133 inclusive

8D-5060 DIFFERENTIAL & BEVEL GEAR GP

8D5060 DIFFERENTIAL AND BEVEL GEAR GROUP--Part 1 of 2
Serial No. 45P2134-Up
8D5059 Differential parts are shown on Page 71

8D-5060 DIFFERENTIAL & BEVEL GEAR GP

8D5060 DIFFERENTIAL AND BEVEL GEAR GROUP--Part 2 of 2
Serial No. 45P2134-Up

FILTER GP

7S-8630 TRANSMISSION FILTER GROUP

7S8630 TRANSMISSION FILTER GROUP
Serial No. 45P1 to 45P1987 inclusive

9P-6447 FILTER GP-TRANSMISSION

9P6447 TRANSMISSION FILTER GROUP
Serial No. 45P1988-Up
Part of 3P374 & 7G2780 Transmission Arrangements shown on Pages 40A & 40B

GEAR GP

2P-9240 TRANSFER CASE & GEAR GP

2P9240 TRANSFER GEAR GROUP--Part 1 of 2
Part of 3P374 & 7G2780 Transmission Arrangements shown on Pages 40 & 40A

2P-9240 TRANSFER CASE & GEAR GP

2P9240 TRANSFER GEAR GROUP--Part 2 of 2
Part of 3P374 & 7G2780 Transmission Arrangements shown on Pages 40 & 40A

GOVERNOR GP

3P-0367 GOVERNOR & DRIVE GP

3P367 GOVERNOR AND DRIVE GROUP
Serial No. 45P1 to 45P2152, 2154, 2163 & 45P2165 inclusive
Part of 3P374 & 7G2780 Transmission Arrangements shown on Pages 40, 40A & 40B
8S6340 Governor parts are shown on Page 62

3P-0367 GOVERNOR & DRIVE GP

3P367 GOVERNOR AND DRIVE GROUP
Serial No. 45P2153, 2155 to 2162, 2164 & 45P2166-Up
Part of 7G2780 Transmission Arrangement shown on Page 40B
8S6340 Governor parts are shown on Page 62

8S-6340 GOVERNOR GP

8S6340 GOVERNOR GROUP
Part of 3P367 Governor and Drive Group shown on Page 61

LINES GP-POWER TRAIN OIL

8D-8240 LINES GP-POWER TRAIN OIL

TRANSMISSION OIL LINES (8D8240 N/S)--Part 1 of 2
Serial No. 45P1 to 45P860 inclusive

8D-8240 LINES GP-POWER TRAIN OIL

TRANSMISSION OIL LINES (8D8240 N/S)--Part 2 of 2
Serial No. 45P1 to 45P860 inclusive

8D-8240 LINES GP-POWER TRAIN OIL

TRANSMISSION OIL LINES (8D8240 N/S)--Part 1 of 2
Serial No. 45P861 to 45P877 inclusive

8D-8240 LINES GP-POWER TRAIN OIL

TRANSMISSION OIL LINES (8D8240 N/S)--Part 2 of 2
Serial No. 45P861 to 45P877 inclusive

8D-8240 LINES GP-POWER TRAIN OIL

8D8240 TRANSMISSION OIL LINES GROUP--Part 1 of 2
Serial No. 45P878 to 45P906 inclusive

8D-8240 LINES GP-POWER TRAIN OIL

8D8240 TRANSMISSION OIL LINES GROUP--Part 2 of 2
Serial No. 45P878 to 45P906 inclusive

8D-8240 LINES GP-POWER TRAIN OIL

8D8240 TRANSMISSION OIL LINES GROUP--Part 1 of 2
Serial No. 45P907 to 45P2133 inclusive

8D-8240 LINES GP-POWER TRAIN OIL

8D8240 TRANSMISSION OIL LINES GROUP--Part 2 of 2
Serial No. 45P907 to 45P2133 inclusive

8D-8240 LINES GP-POWER TRAIN OIL

8D8240 TRANSMISSION OIL LINES GROUP--Part 1 of 2
Serial No. 45P2134-Up

8D-8240 LINES GP-POWER TRAIN OIL

8D8240 TRANSMISSION OIL LINES GROUP--Part 2 of 2
Serial No. 45P2134-Up

LINES GP-RETARDER

8D-9040 LINES GP-RETARDER

8D9040 RETARDER LINES GROUP--Part 1 of 2--Type 1
Part of 9D805 Retarder Arrangement listed on Page 76
2P5802 Valve parts are shown on Page 80

8D-9040 LINES GP-RETARDER

8D9040 RETARDER LINES GROUP--Part 2 of 2--Type 1
Part of 9D805 Retarder Arrangement listed on Page 76
6D3943 Valve parts are shown on Page 77

8D-9040 LINES GP-RETARDER

8D9040 RETARDER LINES GROUP--Part 1 of 2--Type 2
Part of 9D805 Retarder Arrangement listed on Page 76
8P7703 Valve parts are shown on Page 80A-2
AN ATTACHMENT

8D-9040 LINES GP-RETARDER

8D9040 RETARDER LINES GROUP--Part 2 of 2--Type 2
Part of 9D805 Retarder Arrangement listed on Page 76
6D3943 Valve parts are shown on Page 77
AN ATTACHMENT

8D-9040 LINES GP-RETARDER

8D9040 RETARDER LINES GROUP--Part 1 of 2--Type 3
Part of 9D805 Retarder Arrangement listed on Page 76
8P7703 Valve parts are shown on Page 80A-2
AN ATTACHMENT

8D-9040 LINES GP-RETARDER

8D9040 RETARDER LINES GROUP--Part 2 of 2--Type 3
Part of 9D805 Retarder Arrangement listed on Page 76
6D3943 Valve parts are shown on Page 77
AN ATTACHMENT

8D-9040 LINES GP-RETARDER

8D9040 RETARDER LINES GROUP--Part 1 of 2--Type 4
Part of 9D805 Retarder Arrangement listed on Page 76
8D7703 Valve parts are shown on Page 80A-2
AN ATTACHMENT

8D-9040 LINES GP-RETARDER

8D9040 RETARDER LINES GROUP--Part 2 of 2--Type 4
Part of 9D805 Retarder Arrangement listed on Page 76
6D3943 Valve parts are shown on Page 77
AN ATTACHMENT

MANIFOLD & SCREENS GP

8S-0660 MANIFOLD & SCREENS GP

8S660 MANIFOLD AND SCREENS GROUP
Serial No. 45P1 to 1221, 1225 and 45P1232 inclusive
Part of 3P374 Transmission Arrangement shown on Page 40

8S-0660 MANIFOLD & SCREENS GP

8S660 MANIFOLD AND SCREEN GROUP
Serial No. 45P1222 to 1224, 1226 to 1231, 1233 to 1521, 1523 to 1526, 1529, 1531,
1533 to 1535, 1539 and 45P1558 inclusive & Test No. 1730 to 2360, 2363, 2364,
2367, 2371 to 2388 inclusive. Part of 3P374 Transmission Arrangement shown on
Page 40

8S-0660 MANIFOLD & SCREENS GP

8S660 MANIFOLD AND SCREEN GROUP
Serial No. 45P1522, 1527, 1528, 1530, 1532, 1536 to 1538, 1540 to 1557 and 45P1559-Up
& Test No. 2361, 2362, 2365, 2366, 2368 to 2370 & 2389-Up. Part of 3P374
Transmission Arrangement shown on Page 40

PUMP GP

3P-0204 PUMP GP-GEAR

TRANSMISSION PUMP (3P204 N/S)
Part of 3P374 Transmission Arrangement shown on Page 40

3P-0203 PUMP GP-SCAVENGE

SCAVENGE PUMP (3P203 N/S)
Part of 3P374 Transmission Arrangement shown on Page 40

8D-6050 PUMP GP-GEAR

GEAR PUMP (8D6050 N/S)

2P-9313 PUMP GP-GEAR

2P9313 GEAR PUMP GROUP--Single Section
Part of Gear Pump

RETARDER GP

9D-0805 RETARDER ARRANGEMENT

9D805 RETARDER ARRANGEMENT
AN ATTACHMENT

2P-9305 RETARDER GP (W/HOUSING)

2P9305 RETARDER GROUP
Part of 9D805 Retarder Arrangement listed on Page 76
AN ATTACHMENT

SHAFT GP

8D-4450 DRIVE SHAFT GROUP

8D4450 DRIVE SHAFT GROUP--Part 1 of 2
Serial No. 45P1 to 879, 881 to 885, 887 to 890 and 45P892 to 45P901 inclusive

8D-4450 DRIVE SHAFT GROUP

8D4450 DRIVE SHAFT GROUP--Part 2 of 2
Serial No. 45P1 to 879, 881 to 885, 887 to 890 and 45P892 to 45P901 inclusive

8D-4450 DRIVE SHAFT GROUP

8D4450 DRIVE SHAFT GROUP--Part 1 of 2
Serial No. 45P880, 886, 891 and 45P902 to 45P1349 inclusive

8D-4450 DRIVE SHAFT GROUP

8D4450 DRIVE SHAFT GROUP--Part 2 of 2
Serial No. 45P880, 886, 891 and 45P902 to 45P1349 inclusive

8D-4450 DRIVE SHAFT GROUP

8D4450 DRIVE SHAFT GROUP--Part 1 of 2
Serial No. 45P1350 to 45P2133 inclusive

8D-4450 DRIVE SHAFT GROUP

8D4450 DRIVE SHAFT GROUP--Part 2 of 2
Serial No. 45P1350 to 45P2133 inclusive

6G-5790 DRIVE SHAFT GROUP

6G5790 DRIVE SHAFT GROUP--Field Installation--Part 1 of 2
Serial No. 45P1 to 45P2133 inclusive
NOTE: PROVIDES FOR CONVERSION TO FRICTION DAMPED CLUTCH DRIVELINE

6G-5790 DRIVE SHAFT GROUP

6G5790 DRIVE SHAFT GROUP--Field Installation--Part 2 of 2
Serial No. 45P1 to 45P2133 inclusive
NOTEE: PROVIDES FOR CONVERSION TO FRICTION DAMPED CLUTCH DRIVELINE

6G-0710 DRIVE SHAFT GP

6G710 DRIVE SHAFT GROUP--Part 1 of 2
Serial No. 45P2134 to 45P2670 inclusive

6G-0710 DRIVE SHAFT GP

6G710 DRIVE SHAFT GROUP--Part 2 of 2
Serial No. 45P2134 to 45P2670 inclusive

6G-0710 DRIVE SHAFT GP

6G710 DRIVE SHAFT GROUP--Part 1 of 2
Serial No. 45P2671-Up

6G-0710 DRIVE SHAFT GP

6G710 DRIVE SHAFT GROUP--Part 2 of 2
Serial No. 45P2671-Up

TORQUE CONVERTER GP

1T-1065 TORQUE CONVERTER GP

1T1065 TORQUE CONVERTER GROUP (3P1630 N/S)
Torque Converter Serial No. 60T1-Up. Part of 3P374 and 7G2780 Transmission
Arrangement shown on Pages 40, 40A, and 40B. See Page 153 for Gasket Kits

TRANSMISSION GP

3P-0374 TRANSMISSION AR

3P374 TRANSMISSION ARRANGEMENT
Serial No. 45P1 to 45P1987 inclusive. Test No. 336 to 3293 inclusive. 1T1065 Torque Converter, 3P2977 Transmission Hydraulic Control,
2P9309 Case and Covers, 2P9240 Transfer Gears, 2P9311 Planetary Transmission, 8S660 Manifold and Screens, 3P367 Governor and Drive,
3P204 Transmission Pump, 3P203 Scavenge Pump and 7S8630 Filter parts are shown on Pages 41, 46, 47, 53 through 61, 63 and 66

3P-0374 TRANSMISSION AR

3P374 TRANSMISSION ARRANGEMENT
Serial No. 45P1988 to 45P2106, 2109, 2114 & 45P2129 inclusive. Test No. 3294 to 3607 inclusive. 1T1065 Torque Converter,
3P2977 Control, 2P9309 Case and Covers, 2P9240 Transfer Gears, 2P9311 Planetary Transmission, 8S660 Manifold and Screens.
3P367 Governor & Drive, 3P204 & 3P203 Pump & 9P6447 Filter parts are shown on Pages 41, 46, 47, 53 through 61, 63 and 66

7G-2780 TRANSMISSION AR

7G2780 TRANSMISSION ARRANGEMENT
Serial No. 45P2107, 2108, 2110 to 2113, 2115 to 2128 & 452130-Up. Test No. 3608-Up. 1T1065 Torque Converter,
7G2779 Hydraulic Control, 2P9309 Case & Covers, 2P9240 Transfer Gears, 2P9311 Planetary, 8S660 Manifold & Screens,
3P367 Governor & Drive, 3P204 Pump, 3P203 Scavenge Pump & 9P6447 Filter parts are shown on Pages 47A, 47B,
53, 53B, 54, 55, 59E through 59H, 60B, 61, 61B, 63 & 66

2P-9309 CASE & PARTS GP

2P9309 TRANSMISSION CASE AND COVERS GROUP
Serial No. 45P1 to 45P2163 inclusive
Part of 3P374 Transmission Arrangement shown on Pages 40 & 40A

2P-9309 CASE & PARTS GP

2P9309 TRANSMISSION CASE AND COVERS GROUP
Serial No. 45P2164-Up
Part of 7G2780 Transmission Arrangement shown on Page 40B

2P-9311 PLANETARY GP

2P9311 PLANETARY TRANSMISSION GROUP--Part 1 of 4
Serial No. 45P1 to 45P937 inclusive. Part of 3P374 Transmission Arrangement shown
on Page 40. See Page 153 for Gasket Kits

2P-9311 PLANETARY GP

2P9311 PLANETARY TRANSMISSION GROUP--Part 2 of 4
Serial No. 45P1 to 45P937 inclusive
Part of 3P374 Transmission Arrangement shown on Page 40

2P-9311 PLANETARY GP

2P9311 PLANETARY TRANSMISSION GROUP--Part 3 of 4
Serial No. 45P1 to 45P937 inclusive
Part of 3P374 Transmission Arrangement shown on Page 40

2P-9311 PLANETARY GP

2P9311 PLANETARY TRANSMISSION GROUP--Part 4 of 4
Serial No. 45P1 to 45P937 inclusive
Part of 3P374 Transmission Arrangement shown on Page 40

2P-9311 PLANETARY GP

2P9311 PLANETARY TRANSMISSION GROUP--Part 1 of 4
Serial No. 45P938 to 45P1954. Part of 3P374 Transmission Arrangement shown on
Page 40. See Page 153 for Gasket Kits

2P-9311 PLANETARY GP

2P9311 PLANETARY TRANSMISSION GROUP--Part 2 of 4
Serial No. 45P938 to 45P1954 inclusive
Part of 3P374 Transmission Arrangement shown on Page 40

2P-9311 PLANETARY GP

2P9311 PLANETARY TRANSMISSION GROUP--Part 3 of 4
Serial No. 45P938 to 45P1954 inclusive
Part of 3P374 Tranmission Arrangement shown on Page 40

2P-9311 PLANETARY GP

2P9311 PLANETARY TRANSMISSION GROUP--Part 4 of 4
Serial No. 45P938 to 45P1954 inclusive
Part of 3P374 Transmission Arrangement shown on Page 40

2P-9311 PLANETARY GP

2P9311 PLANETARY TRANSMISSION GROUP--Part 1 of 4
Serial No. 45P1955-Up
Part of 3P374 Transmission Arrangement shown on Page 40
See Page 153 for Gasket Kits

2P-9311 PLANETARY GP

2P9311 PLANETARY TRANSMISSION GROUP--Part 2 of 4
Serial No. 45P1955-Up
Part of 3P374 Transmission Arrangement shown on Page 40

2P-9311 PLANETARY GP

2P9311 PLANETARY TRANSMISSION GROUP--Part 3 of 4
Serial No. 45P1955-Up
Part of 3P374 Transmission Arrangement shown on Page 40

2P-9311 PLANETARY GP

2P9311 PLANETARY TRANSMISSION GROUP--Part 4 of 4
Serial No. 45P1955-Up
Part of 3P374 Transmission Arrangement shown on Page 40

2G-7941 COVER AS

2G7941 COVER ASSEMBLY--Field Installation
Serial No. 45P1281-Up
Provides service replacement for 9D8617 and 2G7925
Cover Assemblies shown on Pages 69E, 69H, 69L, 69P and 69S

VALVE GP

6D-0856 VALVE AS

6D856 VALVE ASSEMBLY
Part of 8D8110 Transmission Control and 8D8010 Differential Lock Control
Group shown on Pages 43 and 71

3P-2975 VALVE GP

3P2975 PRESSURE CONTROL AND SELECTOR VALVE GROUP
Serial No. 45P1 to 45P1029 inclusive
Part of Transmission Hydraulic Control shown on Page 47. 7S6937 Valve and 1P3236
Control parts are shown on Pages 51 and 52

VALVE GP-AUTOMATIC SELECTOR

3P-2974 AUTOMATIC SHIFTING VALVE GROUP

3P2974 AUTOMATIC SHIFTING VALVE GROUP
Part of 3P2977 Transmission Hydraulic Control Group shown on Page 47
9S2818, 9S2822 and 3P2973 Valve parts are shown on Pages 48, 49 & 50

7G-2774 VALVE GP-AUTOMATIC SHIFTING

7G2774 AUTOMATIC SHIFTING VALVE GROUP
Serial No. 45P2107, 2108, 2110 to 2113, 2115 to 2128 and 45P2130-Up
Part of 7G2844 Automatic Shifting Valve Group shown on Page 48C
9S2818, 3P6661 & 3P2973 Valve parts are shown on Pages 48, 48D & 50B

7G-2844 VALVE GP-AUTOMATIC SHIFTING

7G2844 AUTOMATIC SHIFTING VALVE GROUP
Serial No. 45P2107, 2108, 2110 to 2113, 2115 to 2128 and 45P2130-Up
Part of 7G2779 Transmission Hydraulic Control Group shown on Page 47B
3P2975 & 7G2774 Valve parts are shown on Pages 48A & 48B

3P-6661 VALVE GP-AUTOMATIC

3P6661 AUTOMATIC SELECTOR VALVE GROUP
Serial No. 45P2107, 2108, 2110 to 2113, 2115 to 2128 and 45P2130-Up
Part of 7G2774 Automatic Shifting Valve Group shown on Page 48B

9S-2822 AUTOMATIC SELECTOR VALVE GROUP

9S2822 AUTOMATIC SELECTOR VALVE GROUP
Part of Automatic Shifting Valve shown on Page 45

VALVE GP-CUTOFF

9S-2818 VALVE GP-CUTOFF

9S2818 GOVERNOR CUT-OFF VALVE GROUP
Part of Automatic Shifting Valve shown on Page 45

VALVE GP-PRESSURE CONTROL

1P-3236 PRESSURE CONTROL GROUP

1P3236 PRESSURE CONTROL GROUP
Serial No. 45P1 to 45P1029 inclusive. Part of 3P2975 Pressure Control and
Selector Valve Group shown on Page 48

6P-6706 PRESSURE CONTROL VALVE GROUP

6P6706 PRESSURE CONTROL VALVE GROUP
Serial No. 45P1030 to 1176, 1180, 1181, 1183 to 1185 & 45P1194 inclusive
Part of 3P2975 Pressure Control and Selector Valve Group shown on Page 48A

8P-2800 VALVE GP-PRESSURE CONTROL

8P2800 PRESSURE CONTROL VALVE GROUP
Serial No. 45P1177 to 45P1179, 1182, 1186 to 1193 & 1195 to 1451 and 45P1453
inclusive. Part of 3P2975 Pressure and Selector Valve Group shown on Page 48A

8P-2800 VALVE GP-PRESSURE CONTROL

8P2800 PRESSURE CONTROL VALVE GROUP
Serial No. 45P1452, 1454 to 1877, 1879, 1881, 1884, 1888, 1890, 1902 and 45P1906
inclusive. Part of 3P2975 Pressure and Selector Valve Group shown on Page 48A

8P-2800 VALVE GP-PRESSURE CONTROL

8P2800 PRESSURE CONTROL VALVE GROUP
Serial No. 45P1878, 1880, 1882, 1883, 1885 to 1887, 1889, 1891 to 1901, 1903 to
1905 and 45P1907-Up. Part of 3P2975 Pressure and Selector Valve Group shown
on Page 48A

VALVE GP-RETARDER CONTROL

6D-3943 VALVE AS

6D3943 RETARDER VALVE ASSEMBLY
Part of 8D9040 Retarder Lines Group shown on Pages 79, 79D & 79F

2P-5802 VALVE GP-RETARDER CONTROL

2P5802 RETARDER CONTROL VALVE GROUP--Type 1
Part of 8D9040 Retarder Lines Group shown on Page 78

2P-5802 VALVE GP-RETARDER CONTROL

2P5802 RETARDER CONTROL VALVE GROUP--Type 2
Part of 8D9040 Retarder Lines Group shown on Page 78

2P-5802 VALVE GP-RETARDER CONTROL

2P5802 RETARDER CONTROL VALVE GROUP--Type 3
Replaced by 8P7703 shown on Page 80A-2
Part of 8D9040 Retarder Lines Group shown on Page 78

8P-7703 VALVE GP-RETARDER CONTROL

8P7703 RETARDER CONTROL VALVE GROUP
Part of 8D9040 Retarder Lines Group shown on Pages 79A, 79C & 79E

VALVE GP-SELECTOR

7S-6937 SELECTOR VALVE GROUP

7S6937 SELECTOR VALVE GROUP
Part of 3P2975 Pressure Control and Selector Valve group shown on Pages 48 and 48A

8P-4221 VALVE GP-SELECTOR

8P4221 SELECTOR VALVE GROUP
Serial No. 45P1177 to 1179, 1182, 1186 to 1193 & 45P1195-Up
Part of 3P2975 Pressure Control and Selector Valve Group shown on Page 48B

VALVE GP-SELECTOR & PRESS CONT

3P-2975 VALVE GP

3P2975 PRESSURE CONTROL AND SELECTOR VALVE GROUP
Serial No. 45P1030 to 1176, 1180, 1181, 1183 to 1185 and 45P1194 inclusive
Part of 3P2977 Control & 7G2844 Valve Groups shown on Pages 47 & 48C
7S6937 Valve and 6P6076 Control parts are shown on Pages 51 & 52A

3P-2975 VALVE GP

3P2975 PRESSURE CONTROL AND SELECTOR VALVE GROUP--Type 1
Serial No. 45P1177 to 1179, 1182, 1186 to 1193 and 45P1195-Up. Part of 3P2977
Transmission Hydraulic Control & 7G2844 Valve Groups shown on Pages 47 & 48C
7S6937 Valve and 8P2800 Control parts are shown on Pages 51, 52B & 52C

3P-2975 VALVE GP

3P2975 PRESSURE CONTROL AND SELECTOR VALVE GROUP--Type 2
Serial No. 45P1177 to 1179, 1182, 1186 to 1193 & 45P1195-Up. Part of 3P2977
Transmission Hydraulic Control & 7G2844 Automatic Shifting Valve Groups shown on
Pages 47 & 48C. 8P4221 Valve & 8P2800 Control parts are shown on Pages 51B,
52B, 52C & 52D

VALVE GP-SHIFT PRESSURE

3P-2973 VALVE GP-SHIFT PRESSURE

3P2973 SHIFT PRESSURE CONTROL GROUP
Serial No. 45P1 to 45P1652 inclusive
Part of 3P2974 Automatic Shifting Valve Group shown on Page 45

3P-2973 VALVE GP-SHIFT PRESSURE

3P2973 SHIFT PRESSURE CONTROL VALVE GROUP
Serial No. 45P1653 to 45P1981 inclusive and Test No. 2583 to 3206 inclusive
Part of 3P2974 Shifting Valve Group shown on Page 45

3P-2973 VALVE GP-SHIFT PRESSURE

3P2973 SHIFT PRESSURE CONTROL VALVE GROUP
Serial No. 45P1982-Up and Test No. 3207-Up
Part of 3P2974 Shifting Valve Group shown on Page 45

VALVE GP-TRANSMISSION CONTROL

3P-2977 CONTROL GP-TRANSMISSION HYD

3P2977 TRANSMISSION HYDRAULIC CONTROL GROUP--Part 1 of 2
Serial No. 45P1 to 45P2106, 2109, 2114 & 45P2129 inclusive
Part of 3P374 Transmission Arrangement shown on Pages 40 & 40A

3P-2977 CONTROL GP-TRANSMISSION HYD

7G-2779 CONTROL GP-TRANSMISSION HYD

7G2779 TRANSMISSION HYDRAULIC CONTROL--Part 1 of 2
Serial No. 45P2107, 2108, 2110 to 2113, 2115 to 2128 and 45P2130-Up
Part of 7G2780 Transmission Arrangement shown on Page 40B

7G-2779 CONTROL GP-TRANSMISSION HYD

6P-6706 PRESSURE CONTROL VALVE GROUP

6P6706 PRESSURE CONTROL VALVE GROUP
Serial No. 45P1030 to 1176, 1180, 1181, 1183 to 1185 & 45P1194 inclusive
Part of 3P2975 Pressure Control and Selector Valve Group shown on Page 48A

8P-2800 VALVE GP-PRESSURE CONTROL

8P2800 PRESSURE CONTROL VALVE GROUP
Serial No. 45P1177 to 45P1179, 1182, 1186 to 1193 & 1195 to 1451 and 45P1453
inclusive. Part of 3P2975 Pressure and Selector Valve Group shown on Page 48A

8P-2800 VALVE GP-PRESSURE CONTROL

8P2800 PRESSURE CONTROL VALVE GROUP
Serial No. 45P1452, 1454 to 1877, 1879, 1881, 1884, 1888, 1890, 1902 and 45P1906
inclusive. Part of 3P2975 Pressure and Selector Valve Group shown on Page 48A

8P-2800 VALVE GP-PRESSURE CONTROL

WHEEL & FINAL DRIVE GP

8D-8250 WHEEL & FINAL DRIVE GP

8D8250 FINAL DRIVE AND WHEELS GROUP--29.5 x 29 Tubeless Tires
Serial No. 45P1 to 45P1676 inclusive
Note: Quantities shown are those required for both R.H. and L.H. sides

8D-8250 WHEEL & FINAL DRIVE GP

8D8250 FINAL DRIVE AND WHEEL GROUP--29.5 x 29 Tubeless Tires
Serial No. 45P1677 to 45P1987 inclusive
Note: Quantities shown are those required for both R.H. and L.H. sides

8D-8250 WHEEL & FINAL DRIVE GP

8D8250 FINAL DRIVE AND WHEEL GROUP--29.5 x 29 Tubeless Tires
Serial No. 45P1988 to 45P2208 inclusive
Note: Quantities shown are those required for both R.H. and L.H. sides

8D-8250 WHEEL & FINAL DRIVE GP

8D8250 FINAL DRIVE AND WHEEL GROUP--29.5 x 29 Tubeless Tires--Part 1 of 2
Serial No. 45P2209 to 45P2443 inclusive
Note: Quantities shown are those required for both R.H. and L.H. sides

8D-8250 WHEEL & FINAL DRIVE GP

8D8250 FINAL DRIVE AND WHEEL GROUP--29.5 x 29 Tubeless Tires--Part 2 of 2
Serial No. 45P2209 to 45P2443 inclusive
Note: Quantities shown are those required for both R.H. and L.H. sides

8D-8250 WHEEL & FINAL DRIVE GP

8D8250 FINAL DRIVE AND WHEEL GROUP--29.5 x 29 Tubeless Tires--Part 1 of 2
Serial No. 45P2444-Up

8D-8250 WHEEL & FINAL DRIVE GP

8D8250 FINAL DRIVE AND WHEEL GROUP--29.5 x 29 Tubeless Tires--Part 2 of 2
Serial No. 45P2444-Up

COOLER GP

4N-2737 COOLER GP-TORQUE CONV OIL

TORQUE CONVERTER OIL COOLER (4N2737 N/S)

Information:

(For parts list, see above)

POWER TRAIN

ACCUMULATOR GP

Special Instruction

Accumulator Discharging and Charging Procedures {0738, 4263, 4264, 4331, 5077, 5077, 5081, 7474}
Accumulator Discharging and Charging Procedures {0738, 4263, 4264, 4331, 5077, 5077, 5081, 7474}

Decommissioning Procedure for Permanently Sealed Diaphragm Accumulators {5077}
Decommissioning Procedure for Permanently Sealed Diaphragm Accumulators {5077}

Service Magazine

Bracket And Hardware Added To Prevent Movement Of Accumulator Hose{5077,5057,7107}
1980/08/25

New Pistons And Wear Rings Improve Sealing Of Accumulators{5077}
1985/08/05

AXLE GP

Special Instruction

Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}
Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}

Assembly and Installation of Conventional Duo-Cone Seals{7561, 7561}
Assembly and Installation of Conventional Duo-Cone Seals{7561, 7561}

Tool and Specification Chart for Conventional Duo-Cone Seal Groups {0599, 7561}
Tool and Specification Chart for Conventional Duo-Cone Seal Groups {0599, 7561}

Installation of Conventional Duo-Cone Seals{7561}
Installation of Conventional Duo-Cone Seals{7561}

Installation of Inverted Duo-Cone Seals{7561}
Installation of Inverted Duo-Cone Seals{7561}

Inspection of the Duo-cone Seal Gp{4050, 4051, 7561}
Inspection of the Duo-cone Seal Gp{4050, 4051, 7561}

Specifications

Final Drive, Wheels, Brakes; and Axles
621B TRACTOR POWER TRAIN

Reuse And Salvage Guidelines

Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}

Torque Converter, Divider, Drive Line, and Drive Axle Reuse and Salvage Manual Contents {0374, 3000, 3050, 3100, 3250, 3251, 3253, 3258}
Torque Converter, Divider, Drive Line, and Drive Axle Reuse and Salvage Manual Contents {0374, 3000, 3050, 3100, 3250, 3251, 3253, 3258}

Contamination Control Guidelines

Proper Oil Changing Procedures {1000, 1308, 1316, 1325, 1348, 3000, 3004, 3005, 3030, 3064, 3067, 3080, 3081, 4000, 4001, 4050, 4051, 5050, 5056, 5068, 5095}
Proper Oil Changing Procedures {1000, 1308, 1316, 1325, 1348, 3000, 3004, 3005, 3030, 3064, 3067, 3080, 3081, 4000, 4001, 4050, 4051, 5050, 5056, 5068, 5095}

Obtaining Oil Sample for Analysis {1302, 1348, 3030, 3080, 3278, 4011, 4070, 5050, 5056, 5095, 7542}
Obtaining Oil Sample for Analysis {1302, 1348, 3030, 3080, 3278, 4011, 4070, 5050, 5056, 5095, 7542}

Procedure for Filtering Final Drives, Rear Axles, and Differentials on Caterpillar Machines {0680, 0768, 3258, 3260, 4050}
Procedure for Filtering Final Drives, Rear Axles, and Differentials on Caterpillar Machines {0680, 0768, 3258, 3260, 4050}

Disassembly and Assembly

Axles
621B & 623B TRACTORS POWER TRAIN

Axle Housing
621B & 623B TRACTORS POWER TRAIN

Axle Housings (621B Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS

Service Magazine

Salvage Procedures For Final Drive Planet Carrier {4093,4092,4050}
1984/01/16

Method To Put Lubricant On Brake Camshaft Bearing Changed{4269,4251,4261,4051,3260}
1978/12/18

New Axle Housing And Hub Used In Final Drive And Wheel Group{4051,4054}
1990/09/24

Product Information Guide, SEBF1015, "Improving Component Durability" , "Final Drives and Differentials" is now available {3258, 3282, 4050}
2004/04/12

Determining the Severity of a Leak of the Duo-cone Seal Gp {4050, 4051, 7561}
2010/02/25

BRAKE & DRIVE GP

Special Instruction

Assembly and Installation of Conventional Duo-Cone Seals{7561, 7561}
Assembly and Installation of Conventional Duo-Cone Seals{7561, 7561}

Installation of Conventional Duo-Cone Seals{7561}
Installation of Conventional Duo-Cone Seals{7561}

Installation of Inverted Duo-Cone Seals{7561}
Installation of Inverted Duo-Cone Seals{7561}

BRAKE GP

Assembly and Installation of Conventional Duo-Cone Seals{7561, 7561}
Assembly and Installation of Conventional Duo-Cone Seals{7561, 7561}

Installation of Conventional Duo-Cone Seals{7561}
Installation of Conventional Duo-Cone Seals{7561}

Installation of Inverted Duo-Cone Seals{7561}
Installation of Inverted Duo-Cone Seals{7561}

CASE GP-HYDROSTATIC POWER

Reuse And Salvage Guidelines

Specifications For Hydraulic Piston Pump And Motor Components {3083, 3203, 3221, 3222, 4351, 5058, 5069, 5070, 5117}
Specifications For Hydraulic Piston Pump And Motor Components {3083, 3203, 3221, 3222, 4351, 5058, 5069, 5070, 5117}

CLUTCH GP

Special Instruction

Use Of 6V188 Drive Line Alignment Tool{626, 3253}
Use Of 6V188 Drive Line Alignment Tool{626, 3253}

Installation Of Drive Line Conversion Groups{3253}
Installation Of Drive Line Conversion Groups{3253}

Reuse And Salvage Guidelines

Identification of Non-Metallic Discs that are Used in Power Shift Transmissions {3030, 3155}
Identification of Non-Metallic Discs that are Used in Power Shift Transmissions {3030, 3155}

Repair of Reaction Dowel Holes in Transmission Clutch Housings {3030, 3155, 3169}
Repair of Reaction Dowel Holes in Transmission Clutch Housings {3030, 3155, 3169}

Disassembly and Assembly

Engine And Drive Shaft
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS

Drive Shaft
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS

Engine And Drive Shaft
621B & 623B TRACTORS POWER TRAIN

Drive Shaft
621B & 623B TRACTORS POWER TRAIN

Drive Shaft Group
621B & 623B TRACTORS POWER TRAIN

Service Magazine

Drive Shaft Conversion Groups Now Available For Parts Service{3253,3252}
1980/08/25

New Drive Shaft Available For Parts Service{3253}
1981/04/06

Use 6V3069 Clutch Alignment Tool During Installation Of Drive Line Clutch{0626,0622,3253}
1981/09/28

Housing Modification Permits Use Of 6V188 Drive Line Alignment Tool{3252,3253}
1982/11/01

New Discs And Plates Used In Drive Shaft Groups{3253,3279}
1983/06/06

Drive Shafts Improved To Reduce Wear{3250,3253}
1985/04/01

Correct Alignment Of Yokes And Drive Shaft Will Prevent Excessive (Too Much) Runout{3253}
1978/09/25

One-Piece Drive Shaft Used In Place Of Coupling And Two Shafts{3252,3253}
1978/12/18

Improved Lubrication To Stubshaft Portion Of Drive Shaft{3253}
1988/10/17

More Information About One-Piece Drive Shaft; Corrected Parts Information{3253,3252}
1979/08/13

Optional Method To Improve Lubrication To Stubshaft Portion Of Drive Shaft {3253}
1989/09/04

CONTROL GP-DIFFERENTIAL LOCK

Specifications

Adjustment Of Transmission Hold And; Differential Lock Pedals
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

Differential Lock And Transmission; Hold Control Valves (6D856)
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

CONTROL GP-RETARDER

Special Instruction

"A Series" Governor And Air/Fuel Ratio Control Response And Low Power Test{0374}
"A Series" Governor And Air/Fuel Ratio Control Response And Low Power Test{0374}

Installation Of 7N4804 Retarder Oil Cooler Water Lines Replacement Group{1368, 3122}
Installation Of 7N4804 Retarder Oil Cooler Water Lines Replacement Group{1368, 3122}

Installation Of Pneumatic Governor Control Lock{1265}
Installation Of Pneumatic Governor Control Lock{1265}

Specifications

Control Valve For The Retarder (2P5802)
621B TRACTOR POWER TRAIN

Retarder Control Valve (6D3943)
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

Regulator For Retarder; Control Valve (8D4765)
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

Disassembly and Assembly

Governor Control Rotochamber
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS

Service Magazine

New Governor Control Group With Accelerator Lock Is Now Available{1265}
1977/12/05

Collar, Nut, And Set Screw Added To Governor Control Group To Hold Bearing In Bracket{1265}
1979/08/20

CONTROL GP-TORQUE CONVERTER

Specifications

Impeller Clutch; Control Valve For Torque Converter (5D4382)
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

CONTROL GP-TRANSMISSION HYD

Hydraulic Controls; For The Transmission
621B TRACTOR POWER TRAIN

Bench Test Procedures

Bench Test Procedure for a 621, 621B, 623B, and 627B Wheel Tractor-Scraper Transmission{3030, 3073}
Bench Test Procedure for a 621, 621B, 623B, and 627B Wheel Tractor-Scraper Transmission{3030, 3073}

Disassembly and Assembly

Transmission Hydraulic Control Valves
621B & 623B TRACTORS POWER TRAIN

Service Magazine

Correction To Service Manual Information For Adjustment Of Shift Points On Eight-Speed Semi-Automatic Transmissions{3167,0374}
1977/02/28

Automatic Downshift Feature Prevents Shifts Between Eighth And Second Speed At High Ground Speeds{3150,3157,3158,3167,3178}
1978/12/04

One-Piece Drive Shaft Used In Place Of Coupling And Two Shafts{3252,3253}
1978/12/18

Screen Now Used In 7 And 8-Speed Power Shift Transmission Governor Oil Supply And Signal Lines{3167,3179,3151,3004}
1979/10/15

Extension Cable Makes It Easier To Use ICM Transmission Control Monitor {3168,0600,1408}
1989/10/09

CYLINDER GP

Special Instruction

Hydraulic Cylinder Repair Process {7562}
Hydraulic Cylinder Repair Process {7562}

Hydraulic Cylinder Honing {7562}
Hydraulic Cylinder Honing {7562}

Reuse And Salvage Guidelines

Testing Hydraulic Cylinders Using the 188-3926 Caterpillar Cylinder Tester and the 9U-6803 Caterpillar Cylinder Tester {0784, 7562}
Testing Hydraulic Cylinders Using the 188-3926 Caterpillar Cylinder Tester and the 9U-6803 Caterpillar Cylinder Tester {0784, 7562}

Hydraulic Cylinder Repair Process {7562}
Hydraulic Cylinder Repair Process {7562}

Hydraulic Cylinder Honing {7562}
Hydraulic Cylinder Honing {7562}

Hydraulic Cylinder Seal Failure Analysis {7555, 7562}
Hydraulic Cylinder Seal Failure Analysis {7555, 7562}

Inspection and Salvage of Hydraulic Cylinder Components {7562}
Inspection and Salvage of Hydraulic Cylinder Components {7562}

Measuring Bores and Installing Seals in Standard and Oversized Hydraulic Cylinders {5100, 7562}
Measuring Bores and Installing Seals in Standard and Oversized Hydraulic Cylinders {5100, 7562}

Contamination Control Guidelines

Hydraulic Cylinder Honing {7562}
Hydraulic Cylinder Honing {7562}

Applied Failure Analysis

Hydraulic Cylinder Seal Failure Analysis {7555, 7562}
Hydraulic Cylinder Seal Failure Analysis {7555, 7562}

Bench Test Procedures

Service Magazine

Double Lip Wiper Seals Must Be Installed Properly {7562}
2002/12/09

A Rework Procedure Improves the Seal Assembly Performance in Hydraulic Cylinders on Cat Products {7562}
2010/04/30

DIFFERENTIAL & BEVEL GEAR GP

Special Instruction

Replacing the 8D3483 Hitch Bracket{3283}
Replacing the 8D3483 Hitch Bracket{3283}

Installation Of Service Replacement Differential Bearing Caps{3258}
Installation Of Service Replacement Differential Bearing Caps{3258}

Specifications

Differential And Bevel Gear (8D5060)
621B TRACTOR POWER TRAIN

Adjustment Of Transmission Hold And; Differential Lock Pedals
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

Differential Lock And Transmission; Hold Control Valves (6D856)
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

Tool Operating Manual

226-2380 Adjustable C-Hook Extension{0374, 0599, 0632, 0727, 1122, 3258, 4050, 4084, 4208, 7561}
226-2380 Adjustable C-Hook Extension{0374, 0599, 0632, 0727, 1122, 3258, 4050, 4084, 4208, 7561}

Reuse And Salvage Guidelines

Differential Housing Components for Wheel Loaders, Articulated Trucks, Wheel Tractors, Compactors, Integrated Toolcarriers, and Motor Graders {3258, 3284}
Differential Housing Components for Wheel Loaders, Articulated Trucks, Wheel Tractors, Compactors, Integrated Toolcarriers, and Motor Graders {3258, 3284}

Reusability of Drive Train Gears {3002, 3159, 3256, 4055}
Reusability of Drive Train Gears {3002, 3159, 3256, 4055}

Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}

Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}
Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}

Thermal Spray Procedures of Differential Carrier Assemblies for Wheel Loader, Wheel Dozer, Compactor, Integrated Toolcarrier, Articulated Truck, and Wheel Tractor Scraper (WTS) {0679, 3284}
Thermal Spray Procedures of Differential Carrier Assemblies for Wheel Loader, Wheel Dozer, Compactor, Integrated Toolcarrier, Articulated Truck, and Wheel Tractor Scraper (WTS) {0679, 3284}

Thermal Spray Procedures for Wheel Loaders, Off-Highway Trucks and Tractors, Articulated Trucks, Wheel Tractors, Compactors, and Integrated Toolcarriers Differential - Support Bearing Journal {0679, 3258, 3284}
Thermal Spray Procedures for Wheel Loaders, Off-Highway Trucks and Tractors, Articulated Trucks, Wheel Tractors, Compactors, and Integrated Toolcarriers Differential - Support Bearing Journal {0679, 3258, 3284}

Thermal Spray Procedures for Wheel Loaders, Articulated Trucks, Wheel Tractors, Compactors, and Integrated Toolcarriers Differential Case - Flange End {0679, 3258, 3284}
Thermal Spray Procedures for Wheel Loaders, Articulated Trucks, Wheel Tractors, Compactors, and Integrated Toolcarriers Differential Case - Flange End {0679, 3258, 3284}

Contamination Control Guidelines

Disassembly and Assembly

Transfer Gears, Transmission And Differential
621B & 623B TRACTORS POWER TRAIN

Differential
621B & 623B TRACTORS POWER TRAIN

Service Magazine

Inspect Clearance Between Differential Carrier And Thrust Stop Bolt{3280}
1981/09/07

Improved Bearing Cages And Adjusting Rings For Differential Carrier Bearings{3258,3280}
1982/10/18

New Differential Thrust Pin Can Be Adjusted From Outside The Case{3258,3280,4051,4059,7051}
1982/11/08

Adjustable Differential Thrust Stops Now Have A Preload{3258}
1986/04/28

2G2827 Block Assembly Gives Support To Hitch During Tractor-Scraper Separation{0640,0643,3258,4059,7100}
1977/11/07

Oil Level Sight Gauge For Differential And Transmission Now Serviced{3150,3250,7479}
1988/09/05

Improved Parts Used In Differential And Bevel Gear Groups{3280,3258}
1989/11/13

New Differential Tube Assembly Now Used{3258}
1997/10/27

An Improved Seal for the Differential Pinion Is Now Available {3256, 3258}
2005/05/23

DIFFERENTIAL GP

Tool Operating Manual

226-2380 Multi-Purpose Lifting Bracket Group{3258, 4050, 4084, 4208, 7561}
226-2380 Multi-Purpose Lifting Bracket Group{3258, 4050, 4084, 4208, 7561}

226-2380 Adjustable C-Hook Extension{0374, 0599, 0632, 0727, 1122, 3258, 4050, 4084, 4208, 7561}
226-2380 Adjustable C-Hook Extension{0374, 0599, 0632, 0727, 1122, 3258, 4050, 4084, 4208, 7561}

Reuse And Salvage Guidelines

Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}
Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}

Thermal Spray Procedures for Differential Case - Housing Face & Pinion Thrust Face {3283}
Thermal Spray Procedures for Differential Case - Housing Face & Pinion Thrust Face {3283}

Contamination Control Guidelines

Service Magazine

Product Information Guide, SEBF1015, "Improving Component Durability" , "Final Drives and Differentials" is now available {3258, 3282, 4050}
2004/04/12

DRIVE GP

Tool Operating Manual

M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}
M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}

Information Release Memo

CAT REMAN EXPANDS HYD GEAR & PISTON PUMP & MOTOR OPTIONS
CAT REMAN EXPANDS HYD GEAR & PISTON PUMP & MOTOR OPTIONS

Disassembly and Assembly

Governor And Fuel Pump Drive
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS

Pump Drive
621B & 623B TRACTORS POWER TRAIN

Service Magazine

New Components Used In Governor And Fuel Pump Drive Group{1288}
1996/02/12

DRIVE TRAIN GP

Improved 5P3000 Engine And Transmission Shipping Stand Assembly; Modification Available For Stands Already In Use{0640}
1977/04/25

DRUM GP

Tool Operating Manual

345-1236 Lifting Bracket{0599, 0629, 0632, 6605}
345-1236 Lifting Bracket{0599, 0629, 0632, 6605}

FILLER GP-POWER TRAIN OIL

Contamination Control Guidelines

FILTER GP

Special Instruction

Guidelines for the Use of Clean Out Filters for the Hydraulic Oil System and for the Power Train Oil System{3067, 5068}
Guidelines for the Use of Clean Out Filters for the Hydraulic Oil System and for the Power Train Oil System{3067, 5068}

Specifications

Oil Filter For The Transmission
621B TRACTOR POWER TRAIN

Contamination Control Guidelines

Service Magazine

Troubleshooting Suspension Seat Oil Leaks{7324,7312,3179}
1981/04/06

Inspect And Clean Seat Suspension Screen Assembly{7324,7527,3179}
1981/04/13

Screen Now Used In 7 And 8-Speed Power Shift Transmission Governor Oil Supply And Signal Lines{3167,3179,3151,3004}
1979/10/15

Color Coded Dust Caps for S·O·S Ports Will Be Available {7770}
2003/12/01

Optional High Efficiency Filters Are Now Available {3004, 5068}
2003/07/07

Understanding Transmission Filter Plugging Events {3004, 3067}
2007/04/02

New Oil Filters for all Cat Machines are Available {3004, 3067, 4295, 431F, 5068}
New Oil Filters for all Cat Machines are Available {3004, 3067, 4295, 431F, 5068}

GAUGE GP-OIL LEVEL (DIPSTICK)

Contamination Control Guidelines

Service Magazine

Oil Level Sight Gauge For Differential And Transmission Now Serviced{3150,3250,7479}
1988/09/05

GEAR GP

Specifications

Oil Pump Of The Transfer Gears; For The Transmission (3P203)
621B TRACTOR POWER TRAIN

Transmission Transfer Gears
621B TRACTOR POWER TRAIN

Tool Operating Manual

M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}
M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}

Reuse And Salvage Guidelines

Salvage Case Assembly and Idler Shaft in Transmission Transfer Gear Groups for 621B, 623B, 627, 627B, 641, 641B, 650B, 651B, 651E, 657, 657B, 657E, 657G, 660B, 666, and 666B Tractor-Scrapers{3030, 3159}
Salvage Case Assembly and Idler Shaft in Transmission Transfer Gear Groups for 621B, 623B, 627, 627B, 641, 641B, 650B, 651B, 651E, 657, 657B, 657E, 657G, 660B, 666, and 666B Tractor-Scrapers{3030, 3159}

Reusability of Drive Train Gears {3002, 3159, 3256, 4055}
Reusability of Drive Train Gears {3002, 3159, 3256, 4055}

Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}

Thermal Spray Procedures for Idler Shaft - Transmission Gear Group{3159}
Thermal Spray Procedures for Idler Shaft - Transmission Gear Group{3159}

Disassembly and Assembly

Transfer Gears, Transmission And Differential
621B & 623B TRACTORS POWER TRAIN

Transmission And Transfer Gears
621B & 623B TRACTORS POWER TRAIN

Transfer Gears
621B & 623B TRACTORS POWER TRAIN

Service Magazine

New Components Used In Governor And Fuel Pump Drive Group{1288}
1996/02/12

Spanner Wrench is Available for Ecology Drain Valves {1302, 1353, 1372, 5076, 5613}
2006/03/20

GEARBOX GP

Tool Operating Manual

M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}
M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}

Reuse And Salvage Guidelines

Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}

GOVERNOR GP

Specifications

Shift Governor And Drive
621B TRACTOR POWER TRAIN

Reuse And Salvage Guidelines

Transmission Governor Salvage for Seven and Eight Speed Powershift Transmissions {3151}
Transmission Governor Salvage for Seven and Eight Speed Powershift Transmissions {3151}

Disassembly and Assembly

Governor And Fuel Pump Drive
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS

Transmission Governor
621B & 623B TRACTORS POWER TRAIN

Service Magazine

Screen Now Used In 7 And 8-Speed Power Shift Transmission Governor Oil Supply And Signal Lines{3167,3179,3151,3004}
1979/10/15

New Components Used In Governor And Fuel Pump Drive Group{1288}
1996/02/12

KIT

Inspection Marks On Bearings{7551,1230,1226,1203,1219,1227}
1982/05/03

LINES GP-HYDRAULIC

Special Instruction

O-Rings - Radial, Fitting Assembly O-Rings and Other O-Ring Applications {0599, 0738, 4000, 4250, 4300, 5050, 5057, 7555}
O-Rings - Radial, Fitting Assembly O-Rings and Other O-Ring Applications {0599, 0738, 4000, 4250, 4300, 5050, 5057, 7555}

Reuse And Salvage Guidelines

Replacing Tubes In Housings That Are Installed With Mechanical Joints (Expanded and Welded) {3016, 3154, 4104, 4133, 5057}
Replacing Tubes In Housings That Are Installed With Mechanical Joints (Expanded and Welded) {3016, 3154, 4104, 4133, 5057}

LINES GP-POWER TRAIN OIL

Special Instruction

Hose and Coupling Assembly and Repair Process Guide{0684, 3016, 3103, 3154, 4133, 4257, 4304, 5057, 7554}
Hose and Coupling Assembly and Repair Process Guide{0684, 3016, 3103, 3154, 4133, 4257, 4304, 5057, 7554}

Service Magazine

Color Coded Dust Caps for S·O·S Ports Will Be Available {7770}
2003/12/01

LINES GP-RETARDER

Special Instruction

Installation Of 7N4804 Retarder Oil Cooler Water Lines Replacement Group{1368, 3122}
Installation Of 7N4804 Retarder Oil Cooler Water Lines Replacement Group{1368, 3122}

LINES GP-TRANSMISSION OIL

Reuse And Salvage Guidelines

MANIFOLD & SCREENS GP

Specifications

Manifold And Screens Group
621B TRACTOR POWER TRAIN

Service Magazine

Screen Now Used In 7 And 8-Speed Power Shift Transmission Governor Oil Supply And Signal Lines{3167,3179,3151,3004}
1979/10/15

MISCELLANEOUS INFORMATION

Special Instruction

Installation Of 2G4553 Thrust Plate{4201, 4209}
Installation Of 2G4553 Thrust Plate{4201, 4209}

Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}
Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}

Use Of 6V188 Drive Line Alignment Tool{626, 3253}
Use Of 6V188 Drive Line Alignment Tool{626, 3253}

Installation Of Drive Line Conversion Groups{3253}
Installation Of Drive Line Conversion Groups{3253}

Installation Of Attachment Retarder Arrangements{3120}
Installation Of Attachment Retarder Arrangements{3120}

Service Letter-NACD

Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock
Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-Australia

Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock
Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-CFEL

Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock
Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-CSARL

Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock
Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-Americas

Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock
Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-Brazil

Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock
Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock

Service Letter-Truck/Ag/Marine

Service Letter-China

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-Asia

Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock
Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-APD

Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock
Certain 7N4160 Switch Groups And 9W1077 Switch Assemblies Need To Be Removed From Parts Stock

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Testing and Adjusting

Testing and Adjusting
621 POWER SHIFT TRANSMISSION

Disassembly and Assembly

Tires And Wheels, Wheel Bearings And Duo-Cone Seals (621 Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS

Axle Housings (621B Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS

Service Magazine

Bracket And Hardware Added To Prevent Movement Of Accumulator Hose{5077,5057,7107}
1980/08/25

Drive Shaft Conversion Groups Now Available For Parts Service{3253,3252}
1980/08/25

Inspect And Clean Seat Suspension Screen Assembly{7324,7527,3179}
1981/04/13

Remove Block Assemblies Used For Shipment{7505,7100,4059,3250}
1981/04/27

Inspect Clearance Between Differential Carrier And Thrust Stop Bolt{3280}
1981/09/07

Use 6V3069 Clutch Alignment Tool During Installation Of Drive Line Clutch{0626,0622,3253}
1981/09/28

Improved Bearing Cages And Adjusting Rings For Differential Carrier Bearings{3258,3280}
1982/10/18

Housing Modification Permits Use Of 6V188 Drive Line Alignment Tool{3252,3253}
1982/11/01

Service Repair Kit Available For Brake Relay Valve{4280}
1983/01/10

New Discs And Plates Used In Drive Shaft Groups{3253,3279}
1983/06/06

Salvage Procedures For Final Drive Planet Carrier {4093,4092,4050}
1984/01/16

Drive Shafts Improved To Reduce Wear{3250,3253}
1985/04/01

Correction To Service Manual Information For Adjustment Of Shift Points On Eight-Speed Semi-Automatic Transmissions{3167,0374}
1977/02/28

New Engine Mount Keeps Forces Caused From Engine Side-To-Side Movement Away From The Frame Of The Vehicle{1152}
1977/03/21

Improved 5P3000 Engine And Transmission Shipping Stand Assembly; Modification Available For Stands Already In Use{0640}
1977/04/25

Operating Techniques Guide Now Available For Wheel Tractor Scrapers With Eight Speed Transmission{0374,3150}
1977/06/20

2G2827 Block Assembly Gives Support To Hitch During Tractor-Scraper Separation{0640,0643,3258,4059,7100}
1977/11/07

Bolt Torque Increased For Correct Wheel Bearing Adjustment{4208}
1987/01/19

New Wheels And Brake Drums Have More Studs{4208,4250,4252}
1978/03/20

Correct Alignment Of Yokes And Drive Shaft Will Prevent Excessive (Too Much) Runout{3253}
1978/09/25

Oil Level Sight Gauge For Differential And Transmission Now Serviced{3150,3250,7479}
1988/09/05

Improved Lubrication To Stubshaft Portion Of Drive Shaft{3253}
1988/10/17

More Information About One-Piece Drive Shaft; Corrected Parts Information{3253,3252}
1979/08/13

Hardened Nuts Now Used To Hold Brake Drum To Wheel{4252,4251}
1979/09/17

Screen Now Used In 7 And 8-Speed Power Shift Transmission Governor Oil Supply And Signal Lines{3167,3179,3151,3004}
1979/10/15

Coolant Now Used In Wheels To Prevent Burned Tire Beads And Possible Tire Explosion{4201}
1979/12/17

New Sun Gear Provides Lubrication To Transmission Clutch Discs{3160,3155}
1990/03/05

New Axle Housing And Hub Used In Final Drive And Wheel Group{4051,4054}
1990/09/24

5T5224 Seal and Valve Kit Available For Repair Of 5T7242 And 8X5444 Brake Relay Valves {4280}
1990/11/12

New Transmission/Retarder Oil Cooler Core Group; Modification To Install Temperature Sensor{1375,1368}
1991/11/11

New Housing Assembly Used In Final Drive And Wheel Group{4051,4059}
1992/02/17

MOTOR GP

Special Instruction

Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}
Rotating Group Adjustment Instructions for Bosch Rexroth Hydraulic Pumps and Motors {3203, 4351, 5058, 5070}

Test Specifications for Vane Cartridges{0784, 5058, 5070}
Test Specifications for Vane Cartridges{0784, 5058, 5070}

Tool Operating Manual

Replacing Sleeve Bearings in Tyrone Gear Pumps and Motors (Used on Series 7 and 8, Iron and Aluminum Housings){0738, 5061, 5073, 7551}
Replacing Sleeve Bearings in Tyrone Gear Pumps and Motors (Used on Series 7 and 8, Iron and Aluminum Housings){0738, 5061, 5073, 7551}

Reuse And Salvage Guidelines

Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 1, 2, and 3) {5061, 5073}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 1, 2, and 3) {5061, 5073}

Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 4, 5, and 6) {5061, 5073}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 4, 5, and 6) {5061, 5073}

General Reuse and Salvage Guideline for Hydraulic Piston Pumps and Motors {5058, 5070}
General Reuse and Salvage Guideline for Hydraulic Piston Pumps and Motors {5058, 5070}

Bench Test Procedures

POWER TRAIN AR

Special Instruction

Instructions to Register the Retrofit and Submit Service Reporting {1000, 3000, 7000, 7570}
Instructions to Register the Retrofit and Submit Service Reporting {1000, 3000, 7000, 7570}

Reuse And Salvage Guidelines

Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}

Final Drive Steering System, Wheel Braking System, and Wheels & Tires Salvage and Reuse Manual Contents {4000, 4050, 4100, 4250, 4300}
Final Drive Steering System, Wheel Braking System, and Wheels & Tires Salvage and Reuse Manual Contents {4000, 4050, 4100, 4250, 4300}

Service Magazine

Improved Registration Process for Retrofit Products {1000, 3000, 7000, 7570}
2011/02/17

PUMP GP

Special Instruction

Repair Process for Hydraulic Gear Pumps {5073}
Repair Process for Hydraulic Gear Pumps {5073}

Test Specifications for Vane Cartridges{0784, 5058, 5070}
Test Specifications for Vane Cartridges{0784, 5058, 5070}

Specifications

Oil Pump Of The Transfer Gears; For The Transmission (3P203)
621B TRACTOR POWER TRAIN

Oil Pump For The Flywheel Housing (8D6050)
621B TRACTOR POWER TRAIN

Oil Pump For The Transmission (3P204)
621B TRACTOR POWER TRAIN

Tool Operating Manual

Reuse And Salvage Guidelines

Hydraulic Gear Pumps Used in Transmissions {3066, 5073}
Hydraulic Gear Pumps Used in Transmissions {3066, 5073}

Repair Process for Hydraulic Gear Pumps {5073}
Repair Process for Hydraulic Gear Pumps {5073}

Removing and Installing Bushings and Pressure Plates in Hydraulic Gear Pumps {5073}
Removing and Installing Bushings and Pressure Plates in Hydraulic Gear Pumps {5073}

General Reuse and Salvage Guideline for Hydraulic Piston Pumps and Motors {5058, 5070}
General Reuse and Salvage Guideline for Hydraulic Piston Pumps and Motors {5058, 5070}

Thermal Spray Procedures for Tyrone Drive Shaft (Pump Gear){0679, 3066, 5073}
Thermal Spray Procedures for Tyrone Drive Shaft (Pump Gear){0679, 3066, 5073}

Information Release Memo

CAT REMAN EXPANDS HYD GEAR & PISTON PUMP & MOTOR OPTIONS
CAT REMAN EXPANDS HYD GEAR & PISTON PUMP & MOTOR OPTIONS

Bench Test Procedures

Bench Test Procedure for Gear Pumps {5073}
Bench Test Procedure for Gear Pumps {5073}

Disassembly and Assembly

Scavenge Pump
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS

Scavenge Pump
621B & 623B TRACTORS POWER TRAIN

RETARDER GP

Special Instruction

Installation Of 7N4804 Retarder Oil Cooler Water Lines Replacement Group{1368, 3122}
Installation Of 7N4804 Retarder Oil Cooler Water Lines Replacement Group{1368, 3122}

Installation Of Attachment Retarder Arrangements{3120}
Installation Of Attachment Retarder Arrangements{3120}

Specifications

Control Valve For The Retarder (2P5802)
621B TRACTOR POWER TRAIN

Hydraulic Retarder
621B TRACTOR POWER TRAIN

Retarder Control Valve (6D3943)
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

Regulator For Retarder; Control Valve (8D4765)
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

Service Magazine

New Transmission/Retarder Oil Cooler Core Group; Modification To Install Temperature Sensor{1375,1368}
1991/11/11

SCREEN GP

Screen Now Used In 7 And 8-Speed Power Shift Transmission Governor Oil Supply And Signal Lines{3167,3179,3151,3004}
1979/10/15

SEAL GP-DUO-CONE

Special Instruction

Tool and Specification Chart for Conventional Duo-Cone Seal Groups {0599, 7561}
Tool and Specification Chart for Conventional Duo-Cone Seal Groups {0599, 7561}

Inspection of the Duo-cone Seal Gp{4050, 4051, 7561}
Inspection of the Duo-cone Seal Gp{4050, 4051, 7561}

Service Magazine

Final Drive Duo-Cone Seal Assembly Information Update {7561}
2010/04/15

Determining the Severity of a Leak of the Duo-cone Seal Gp {4050, 4051, 7561}
2010/02/25

SHAFT GP

Special Instruction

Use Of 6V188 Drive Line Alignment Tool{626, 3253}
Use Of 6V188 Drive Line Alignment Tool{626, 3253}

Installation Of Drive Line Conversion Groups{3253}
Installation Of Drive Line Conversion Groups{3253}

Specifications

Drive Shaft Group (Later Machines)
621B TRACTOR POWER TRAIN

Coupling For The Drive Shaft (Early Machines)
621B TRACTOR POWER TRAIN

Reuse And Salvage Guidelines

Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}

Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}
Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}

Disassembly and Assembly

Engine And Drive Shaft
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS

Drive Shaft
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS

Engine And Drive Shaft
621B & 623B TRACTORS POWER TRAIN

Drive Shaft
621B & 623B TRACTORS POWER TRAIN

Drive Shaft Group
621B & 623B TRACTORS POWER TRAIN

Service Magazine

Drive Shaft Conversion Groups Now Available For Parts Service{3253,3252}
1980/08/25

New Drive Shaft Available For Parts Service{3253}
1981/04/06

Use 6V3069 Clutch Alignment Tool During Installation Of Drive Line Clutch{0626,0622,3253}
1981/09/28

Housing Modification Permits Use Of 6V188 Drive Line Alignment Tool{3252,3253}
1982/11/01

New Discs And Plates Used In Drive Shaft Groups{3253,3279}
1983/06/06

Drive Shafts Improved To Reduce Wear{3250,3253}
1985/04/01

Correct Alignment Of Yokes And Drive Shaft Will Prevent Excessive (Too Much) Runout{3253}
1978/09/25

One-Piece Drive Shaft Used In Place Of Coupling And Two Shafts{3252,3253}
1978/12/18

Improved Lubrication To Stubshaft Portion Of Drive Shaft{3253}
1988/10/17

More Information About One-Piece Drive Shaft; Corrected Parts Information{3253,3252}
1979/08/13

Optional Method To Improve Lubrication To Stubshaft Portion Of Drive Shaft {3253}
1989/09/04

SLIP JOINT GP

Reuse And Salvage Guidelines

SPINDLE & HUB AS

Thermal Spray Procedures for WTS Front Spindle {0679, 4051, 4201, 4205, 4208}
Thermal Spray Procedures for WTS Front Spindle {0679, 4051, 4201, 4205, 4208}

TANK GP

Filtration Times for Caterpillar Machine Fluid Compartments{0680, 0738, 0768, 3080, 5050, 5056, 5095}
Filtration Times for Caterpillar Machine Fluid Compartments{0680, 0738, 0768, 3080, 5050, 5056, 5095}

Contamination Control Guidelines

Service Magazine

243-3133 Quick Connect Coupler (Fluid Sampling) Provides A Coupler for Portable Particle Analyzers {0707, 0717, 0731, 0732, 0738}
2004/07/05

TOOLS

Truck Engine News

Single Purpose Fluid Sampling Valves and Dual Purpose Fluid Sampling Valves Require Different Quick Connect Couplers {0645, 7542}
2004/11/29

New Infrared Thermometer Has Narrow, 50:1 Target Ratio, Wide Temperature Range {0776, 1350, 3000, 4000, 4150, 4250}
2006/03/27

Engine News

Single Purpose Fluid Sampling Valves and Dual Purpose Fluid Sampling Valves Require Different Quick Connect Couplers {0645, 7542}
2004/11/29

Special Instruction

Use of 8T5200 Signal Generator/Counter Group{0778, 0783, 0785}
Use of 8T5200 Signal Generator/Counter Group{0778, 0783, 0785}

Procedure to Salvage the Slots for the Pin and Holes for the Reaction Dowel in Transmission Clutch Plates, Pistons, and Housings {3030, 3050, 3169, 3170, 3190}
Procedure to Salvage the Slots for the Pin and Holes for the Reaction Dowel in Transmission Clutch Plates, Pistons, and Housings {3030, 3050, 3169, 3170, 3190}

Test Specifications for Vane Cartridges{0784, 5058, 5070}
Test Specifications for Vane Cartridges{0784, 5058, 5070}

Rim Inspection Guidelines {4202, 4209}
Rim Inspection Guidelines {4202, 4209}

Hose Inspection Form {0374, 0599, 5057, 5057}
Hose Inspection Form {0374, 0599, 5057, 5057}

Tool Operating Manual

Using the 198-4240 Digital Pressure Indicator Group{0599, 0738, 0788, 1000, 3000, 4000, 5000, 6000}
Using the 198-4240 Digital Pressure Indicator Group{0599, 0738, 0788, 1000, 3000, 4000, 5000, 6000}

226-2380 Multi-Purpose Lifting Bracket Group{3258, 4050, 4084, 4208, 7561}
226-2380 Multi-Purpose Lifting Bracket Group{3258, 4050, 4084, 4208, 7561}

142-1664 Adjustable Lifting Bracket Group{0599, 0629, 0700, 0729, 0757, 1122}
142-1664 Adjustable Lifting Bracket Group{0599, 0629, 0700, 0729, 0757, 1122}

Base-Mounted Recirculating Parts Washers{0374, 0599, 0680, 0699, 0700}
Base-Mounted Recirculating Parts Washers{0374, 0599, 0680, 0699, 0700}

362-0960 Lifting Beam Assembly {0599, 0629, 0700, 0729, 0757, 1122}
362-0960 Lifting Beam Assembly {0599, 0629, 0700, 0729, 0757, 1122}

149-7173 Bearing Handling Bracket Assembly {0374, 0599, 0629, 0632, 4006, 4008, 7551}
149-7173 Bearing Handling Bracket Assembly {0374, 0599, 0629, 0632, 4006, 4008, 7551}

439-3938, 439-3939, 439-3940, 439-3941, 439-3942, 439-3943 Link Bracket Assemblies {0374, 0599, 0632, 0700, 7000}
439-3938, 439-3939, 439-3940, 439-3941, 439-3942, 439-3943 Link Bracket Assemblies {0374, 0599, 0632, 0700, 7000}

127-8458 Final Drive Disassembly and Assembly Bench {0374, 0599, 0722, 0727}
127-8458 Final Drive Disassembly and Assembly Bench {0374, 0599, 0722, 0727}

146-1738 Precision Borescope (Hawkeye){0599, 0614, 0644, 0701, 0706, 0708, 0727, 0738}
146-1738 Precision Borescope (Hawkeye){0599, 0614, 0644, 0701, 0706, 0708, 0727, 0738}

TT5000 to TT7000 Torque Turn Wrench Conversion{0374, 0599, 0602, 0677, 79NY}
TT5000 to TT7000 Torque Turn Wrench Conversion{0374, 0599, 0602, 0677, 79NY}

420-2048 Adjustable C-Frame Assembly{0629, 0632, 0738, 4000, 5050, 7000}
420-2048 Adjustable C-Frame Assembly{0629, 0632, 0738, 4000, 5050, 7000}

HVOF Identifier 396-9342 Group{0599, 0669, 0679, 7000}
HVOF Identifier 396-9342 Group{0599, 0669, 0679, 7000}

4-Inch Radial Hose Machine{0374, 0599, 0684, 0738, 5057}
4-Inch Radial Hose Machine{0374, 0599, 0684, 0738, 5057}

142-6893 Adjustable Lifting Bracket Group{0599, 0629, 0632, 0701, 0717, 1000, 4000, 7000}
142-6893 Adjustable Lifting Bracket Group{0599, 0629, 0632, 0701, 0717, 1000, 4000, 7000}

226-2380 Adjustable C-Hook Extension{0374, 0599, 0632, 0727, 1122, 3258, 4050, 4084, 4208, 7561}
226-2380 Adjustable C-Hook Extension{0374, 0599, 0632, 0727, 1122, 3258, 4050, 4084, 4208, 7561}

Procedures for Using the 212-1503 Portable Parts Washer{0374, 0599, 0680, 0699, 0700}
Procedures for Using the 212-1503 Portable Parts Washer{0374, 0599, 0680, 0699, 0700}

Using the 223-2105 Hose Cutting Machine{0374, 0599, 0678, 0684, 0708, 0738, 5057, 6060}
Using the 223-2105 Hose Cutting Machine{0374, 0599, 0678, 0684, 0708, 0738, 5057, 6060}

Crimping XT-3 ES and XT-5 S4G, MCSH, and MCSX Couplings Using 4C-3660, 4C-5052, 4C-5053, 9U-5792, or 9U-7261 Hose Machines{0374, 0599, 0684, 0738, 5057}
Crimping XT-3 ES and XT-5 S4G, MCSH, and MCSX Couplings Using 4C-3660, 4C-5052, 4C-5053, 9U-5792, or 9U-7261 Hose Machines{0374, 0599, 0684, 0738, 5057}

243-0765 Bench Model Hose Machine For Use With the 242-3567 Variable Crimp Die Bowl{0374, 0599, 0684, 0738, 5057}
243-0765 Bench Model Hose Machine For Use With the 242-3567 Variable Crimp Die Bowl{0374, 0599, 0684, 0738, 5057}

193-4124 Rear Wheel Bearing Preload Adjuster for 793 Off-Highway Trucks{0374, 0599, 0700, 0722, 0727, 0731}
193-4124 Rear Wheel Bearing Preload Adjuster for 793 Off-Highway Trucks{0374, 0599, 0700, 0722, 0727, 0731}

Using the 453-3204 Pressure and Temperature Test Group{0374, 0599, 0706, 0708, 0709, 0731, 0732, 0738, 1408, 1439}
Using the 453-3204 Pressure and Temperature Test Group{0374, 0599, 0706, 0708, 0709, 0731, 0732, 0738, 1408, 1439}

456-4449 Support Device{0374, 0599, 0629, 0632, 0700}
456-4449 Support Device{0374, 0599, 0629, 0632, 0700}

Installing 457-6030 (C3-290 Controller) on Hose Crimping Machines 233-8048, 286-4354, 286-4355, 275-6199, 286-4353, and 233-8038{0374, 0599, 0684, 0700, 0738, 5057}
Installing 457-6030 (C3-290 Controller) on Hose Crimping Machines 233-8048, 286-4354, 286-4355, 275-6199, 286-4353, and 233-8038{0374, 0599, 0684, 0700, 0738, 5057}

442-1750 Lifting Plate{0374, 0599, 0629, 0632, 0700, 1122}
442-1750 Lifting Plate{0374, 0599, 0629, 0632, 0700, 1122}

M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}
M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}

Base Mounted Recirculating Parts Washers {0374, 0599, 0680, 0699, 0700}
Base Mounted Recirculating Parts Washers {0374, 0599, 0680, 0699, 0700}

Reuse And Salvage Guidelines

Contamination Control Guidelines

Bench Test Procedures

Service Magazine

General Application Axle Installer Used On Many Different Caterpillar-Built Machines{0622}
1977/09/05

Extraction Tools For "Live Oil Sampling"{7770,0770,0781,0783,0784}
1988/04/18

Installation Of Valves For Live Oil Sampling{7770,0770,0781,0783,0784}
1988/06/06

Single Purpose Fluid Sampling Valves and Dual Purpose Fluid Sampling Valves Require Different Quick Connect Couplers {0645, 7542}
2004/11/29

Spanner Wrench is Available for Ecology Drain Valves {1302, 1353, 1372, 5076, 5613}
2006/03/20

TORQUE CONVERTER GP

Special Instruction

Installation of Torque Converter Sleeve Bearings{3135}
Installation of Torque Converter Sleeve Bearings{3135}

Specifications

Torque Converter (1T1065)
621B TRACTOR POWER TRAIN

Impeller Clutch; Control Valve For Torque Converter (5D4382)
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

Reuse And Salvage Guidelines

Reusability of Drive Train Gears {3002, 3159, 3256, 4055}
Reusability of Drive Train Gears {3002, 3159, 3256, 4055}

Transmission, Torque Converter and Relief Valve Bench Test Procedures Reference Manual Contents {3030, 3101, 3133}
Transmission, Torque Converter and Relief Valve Bench Test Procedures Reference Manual Contents {3030, 3101, 3133}

Salvage of Center Bearing in Torque Converter Input Housing {3101, 3127}
Salvage of Center Bearing in Torque Converter Input Housing {3101, 3127}

Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}

Turbine Wheel for Torque Converters Used with Power Shift Transmissions {3101, 3131}
Turbine Wheel for Torque Converters Used with Power Shift Transmissions {3101, 3131}

Repair of Transmission, Torque Converter, and Torque Divider Shafts {3000, 3063, 3100}
Repair of Transmission, Torque Converter, and Torque Divider Shafts {3000, 3063, 3100}

Reusability Inspection of Seal Ring and Stator Carrier Assemblies for Certain Models {0760, 0761, 3101, 3129, 3160, 7555}
Reusability Inspection of Seal Ring and Stator Carrier Assemblies for Certain Models {0760, 0761, 3101, 3129, 3160, 7555}

Variable Capacity Torque Converter Impeller Salvage {3101, 3134}
Variable Capacity Torque Converter Impeller Salvage {3101, 3134}

Thermal Spray Procedures for Torque Converter Turbine Wheel {0679, 3101, 3131}
Thermal Spray Procedures for Torque Converter Turbine Wheel {0679, 3101, 3131}

Thermal Spray Procedures for Torque Converter Impeller {0679, 3101, 3134}
Thermal Spray Procedures for Torque Converter Impeller {0679, 3101, 3134}

Thermal Spray Procedures for Transmission, Torque Converter and Torque Divider Shafts {0679, 0719, 3030, 3101, 3125, 3130}
Thermal Spray Procedures for Transmission, Torque Converter and Torque Divider Shafts {0679, 0719, 3030, 3101, 3125, 3130}

Thermal Spray Procedures for Torque Converter Carrier - Seal Ring Bore {0374, 0599, 0679, 3101, 3135}
Thermal Spray Procedures for Torque Converter Carrier - Seal Ring Bore {0374, 0599, 0679, 3101, 3135}

Thermal Spray Procedures for Torque Converter Input Housing {0679, 3101, 3127}
Thermal Spray Procedures for Torque Converter Input Housing {0679, 3101, 3127}

Thermal Spray Procedures for Transmission and Torque Converter Yokes {0599, 0679, 3001, 3030, 3101, 3160}
Thermal Spray Procedures for Transmission and Torque Converter Yokes {0599, 0679, 3001, 3030, 3101, 3160}

Bench Test Procedures

Disassembly and Assembly

Torque Converter (623 Tractor)
621B & 623B TRACTORS POWER TRAIN

Torque Converter (621 Tractor)
621B & 623B TRACTORS POWER TRAIN

Service Magazine

Reconditioning Torque Converter Parts With Sleeve Bearings{3101}
1982/07/05

Recommendations for Rebuilding Torque Converter Freewheel Stators on All Cat Products {3101, 3129}
2013/03/21

TORQUE DIVIDER GP

Reuse And Salvage Guidelines

Repair of Transmission, Torque Converter, and Torque Divider Shafts {3000, 3063, 3100}
Repair of Transmission, Torque Converter, and Torque Divider Shafts {3000, 3063, 3100}

Service Magazine

Recommendations for Rebuilding Torque Converter Freewheel Stators on All Cat Products {3101, 3129}
2013/03/21

TRANSMISSION GP

Special Instruction

Technical Information Bulletin

Some 2P-4472, 7G-0825, and 8P-1656 Clutch Plates May Have Been Shipped Into the Parts System Before Finish Grinding
Some 2P-4472, 7G-0825, and 8P-1656 Clutch Plates May Have Been Shipped Into the Parts System Before Finish Grinding

Specifications

Engine And Transmission Support (980C Wheel Loader)
3406 ENGINE FOR CATERPILLAR BUILT MACHINES

Oil Pump Of The Transfer Gears; For The Transmission (3P203)
621B TRACTOR POWER TRAIN

Oil Pump For The Transmission (3P204)
621B TRACTOR POWER TRAIN

Oil Filter For The Transmission
621B TRACTOR POWER TRAIN

Temperature Control Valve; For Transmission Oil
621B TRACTOR POWER TRAIN

Transmission Transfer Gears
621B TRACTOR POWER TRAIN

Hydraulic Controls; For The Transmission
621B TRACTOR POWER TRAIN

Pressure Control Valve; For The Transmission (1P3236 and 8P2800)
621B TRACTOR POWER TRAIN

Transmission (2P9311)
621B TRACTOR POWER TRAIN

Adjustment Of Transmission Hold And; Differential Lock Pedals
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

Differential Lock And Transmission; Hold Control Valves (6D856)
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

Tool Operating Manual

M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}
M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}

Reuse And Salvage Guidelines

Reusability of Drive Train Gears {3002, 3159, 3256, 4055}
Reusability of Drive Train Gears {3002, 3159, 3256, 4055}

Identification of Non-Metallic Discs that are Used in Power Shift Transmissions {3030, 3155}
Identification of Non-Metallic Discs that are Used in Power Shift Transmissions {3030, 3155}

Transmission Clutch Plates and Disc Assemblies with Sintered Bronze Friction Material {3030, 3155, 3190}
Transmission Clutch Plates and Disc Assemblies with Sintered Bronze Friction Material {3030, 3155, 3190}

Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}

Identification and Applications of Transmission Clutch Plates and Specifications to Machine Reaction Faces for Power Shift Transmissions {3054, 3155, 3160, 3190}
Identification and Applications of Transmission Clutch Plates and Specifications to Machine Reaction Faces for Power Shift Transmissions {3054, 3155, 3160, 3190}

Transmission Reuse and Salvage Manual Contents {0374, 3030}
Transmission Reuse and Salvage Manual Contents {0374, 3030}

Transmission Governor Salvage for Seven and Eight Speed Powershift Transmissions {3151}
Transmission Governor Salvage for Seven and Eight Speed Powershift Transmissions {3151}

Clutch Ring Gears For All Power Shift Transmissions {3030, 3155}
Clutch Ring Gears For All Power Shift Transmissions {3030, 3155}

Procedure to Salvage Tang Slots on Transmission and Brake Pistons {0679, 3160, 4011, 4251}
Procedure to Salvage Tang Slots on Transmission and Brake Pistons {0679, 3160, 4011, 4251}

Repair of Transmission, Torque Converter, and Torque Divider Shafts {3000, 3063, 3100}
Repair of Transmission, Torque Converter, and Torque Divider Shafts {3000, 3063, 3100}

Reuse and Salvage of Transmission Components {3030}
Reuse and Salvage of Transmission Components {3030}

Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}
Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}

Procedures to Salvage Thrust Faces on Planetary Carriers {3160, 4050, 4051, 4093}
Procedures to Salvage Thrust Faces on Planetary Carriers {3160, 4050, 4051, 4093}

Repair of Reaction Dowel Holes in Transmission Clutch Housings {3030, 3155, 3169}
Repair of Reaction Dowel Holes in Transmission Clutch Housings {3030, 3155, 3169}

Thermal Spray Procedures for Clutch Housing Piston Bore {0679, 3160, 3169}
Thermal Spray Procedures for Clutch Housing Piston Bore {0679, 3160, 3169}

Thermal Spray Procedures for Clutch Piston Inside Diameter {0679, 3160, 3170}
Thermal Spray Procedures for Clutch Piston Inside Diameter {0679, 3160, 3170}

Contamination Control Guidelines

Testing and Adjusting

Testing and Adjusting
621 POWER SHIFT TRANSMISSION

Bench Test Procedures

Bench Test Procedure for a 621, 621B, 623B, and 627B Wheel Tractor-Scraper Transmission{3030, 3073}
Bench Test Procedure for a 621, 621B, 623B, and 627B Wheel Tractor-Scraper Transmission{3030, 3073}

Disassembly and Assembly

Transmission Oil Cooler
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS

Transfer Gears, Transmission And Differential
621B & 623B TRACTORS POWER TRAIN

Transmission And Transfer Gears
621B & 623B TRACTORS POWER TRAIN

Transmission Governor
621B & 623B TRACTORS POWER TRAIN

Transmission
621B & 623B TRACTORS POWER TRAIN

Transmission Hydraulic Control Valves
621B & 623B TRACTORS POWER TRAIN

Service Magazine

New Starter Used That Eliminates Interference With Engine Mount {1152,1453}
1986/02/24

New Transmission Clutch Disc Has Stronger Core{3190,3155}
1986/06/09

Fixture For Disassembly And Assembly Of Center Shaft In Seven And Eight Speed Transmissions{0620,3150}
1977/01/17

Correction To Service Manual Information For Adjustment Of Shift Points On Eight-Speed Semi-Automatic Transmissions{3167,0374}
1977/02/28

New Engine Mount Keeps Forces Caused From Engine Side-To-Side Movement Away From The Frame Of The Vehicle{1152}
1977/03/21

Improved 5P3000 Engine And Transmission Shipping Stand Assembly; Modification Available For Stands Already In Use{0640}
1977/04/25

Operating Techniques Guide Now Available For Wheel Tractor Scrapers With Eight Speed Transmission{0374,3150}
1977/06/20

Automatic Downshift Feature Prevents Shifts Between Eighth And Second Speed At High Ground Speeds{3150,3157,3158,3167,3178}
1978/12/04

One-Piece Drive Shaft Used In Place Of Coupling And Two Shafts{3252,3253}
1978/12/18

Oil Level Sight Gauge For Differential And Transmission Now Serviced{3150,3250,7479}
1988/09/05

Screen Now Used In 7 And 8-Speed Power Shift Transmission Governor Oil Supply And Signal Lines{3167,3179,3151,3004}
1979/10/15

Extension Cable Makes It Easier To Use ICM Transmission Control Monitor {3168,0600,1408}
1989/10/09

New Sun Gear Provides Lubrication To Transmission Clutch Discs{3160,3155}
1990/03/05

New Transmission/Retarder Oil Cooler Core Group; Modification To Install Temperature Sensor{1375,1368}
1991/11/11

Spanner Wrench is Available for Ecology Drain Valves {1302, 1353, 1372, 5076, 5613}
2006/03/20

Improved Registration Process for Retrofit Products {1000, 3000, 7000, 7570}
2011/02/17

A New Bearing Cage Assembly is Now Used in the Planetary Group on Certain Wheel Tractor-Scrapers and Off-Highway Trucks {3030, 3160}
A New Bearing Cage Assembly is Now Used in the Planetary Group on Certain Wheel Tractor-Scrapers and Off-Highway Trucks {3030, 3160}

VALVE GP

Specifications

Temperature Control Valve; For Transmission Oil
621B TRACTOR POWER TRAIN

VALVE GP-AUTOMATIC SELECTOR

Automatic Selector Valve (9S2822 and 3P6661)
621B TRACTOR POWER TRAIN

Service Magazine

Automatic Downshift Feature Prevents Shifts Between Eighth And Second Speed At High Ground Speeds{3150,3157,3158,3167,3178}
1978/12/04

VALVE GP-CUTOFF

Specifications

Governor Cutoff Valve (9S2818)
621B TRACTOR POWER TRAIN

VALVE GP-FLUID SAMPLING

Truck Engine News

Single Purpose Fluid Sampling Valves and Dual Purpose Fluid Sampling Valves Require Different Quick Connect Couplers {0645, 7542}
2004/11/29

Engine News

Contamination Control Guidelines

Service Magazine

Color Coded Dust Caps for S·O·S Ports Will Be Available {7770}
2003/12/01

243-3133 Quick Connect Coupler (Fluid Sampling) Provides A Coupler for Portable Particle Analyzers {0707, 0717, 0731, 0732, 0738}
2004/07/05

Single Purpose Fluid Sampling Valves and Dual Purpose Fluid Sampling Valves Require Different Quick Connect Couplers {0645, 7542}
2004/11/29

VALVE GP-GOVERNOR CUTOFF

Screen Now Used In 7 And 8-Speed Power Shift Transmission Governor Oil Supply And Signal Lines{3167,3179,3151,3004}
1979/10/15

VALVE GP-MANIFOLD & REDUCING

Specifications

Pressure Reducing Valve (3G7594)
621B, 623B & 627B WHEEL TRACTORS STEERING SYSTEM

Service Magazine

Correction To Service Manual Information For Adjustment Of Shift Points On Eight-Speed Semi-Automatic Transmissions{3167,0374}
1977/02/28

Automatic Downshift Feature Prevents Shifts Between Eighth And Second Speed At High Ground Speeds{3150,3157,3158,3167,3178}
1978/12/04

One-Piece Drive Shaft Used In Place Of Coupling And Two Shafts{3252,3253}
1978/12/18

Screen Now Used In 7 And 8-Speed Power Shift Transmission Governor Oil Supply And Signal Lines{3167,3179,3151,3004}
1979/10/15

VALVE GP-MANUAL

Automatic Downshift Feature Prevents Shifts Between Eighth And Second Speed At High Ground Speeds{3150,3157,3158,3167,3178}
1978/12/04

VALVE GP-PRESSURE CONTROL

Specifications

Pressure Control Valve; For The Transmission (1P3236 and 8P2800)
621B TRACTOR POWER TRAIN

Disassembly and Assembly

Transmission Hydraulic Control Valves
621B & 623B TRACTORS POWER TRAIN

VALVE GP-REDUCING

Specifications

Pressure Reducing Valve (3G7594)
621B, 623B & 627B WHEEL TRACTORS STEERING SYSTEM

VALVE GP-RELAY

Service Magazine

Service Repair Kit Available For Brake Relay Valve{4280}
1983/01/10

5T5224 Seal and Valve Kit Available For Repair Of 5T7242 And 8X5444 Brake Relay Valves {4280}
1990/11/12

VALVE GP-RELIEF

Reuse And Salvage Guidelines

Bench Test Procedures

VALVE GP-RETARDER CONTROL

Specifications

Control Valve For The Retarder (2P5802)
621B TRACTOR POWER TRAIN

Retarder Control Valve (6D3943)
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

Regulator For Retarder; Control Valve (8D4765)
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK

VALVE GP-SELECTOR

Automatic Selector Valve (9S2822 and 3P6661)
621B TRACTOR POWER TRAIN

VALVE GP-SELECTOR & PRESS CONT

Pressure Control Valve; For The Transmission (1P3236 and 8P2800)
621B TRACTOR POWER TRAIN

Reuse And Salvage Guidelines

Disassembly and Assembly

Transmission Hydraulic Control Valves
621B & 623B TRACTORS POWER TRAIN

VALVE GP-SEQUENCE & PRESS CONT

Specifications

Pressure Control Valve; For The Transmission (1P3236 and 8P2800)
621B TRACTOR POWER TRAIN

VALVE GP-SHIFT PRESSURE

Shift Pressure Valve (3P2973)
621B TRACTOR POWER TRAIN

Service Magazine

Automatic Downshift Feature Prevents Shifts Between Eighth And Second Speed At High Ground Speeds{3150,3157,3158,3167,3178}
1978/12/04

VALVE GP-SOLENOID

Service Repair Kit Available For Brake Relay Valve{4280}
1983/01/10

5T5224 Seal and Valve Kit Available For Repair Of 5T7242 And 8X5444 Brake Relay Valves {4280}
1990/11/12

VALVE GP-TRANSMISSION CONTROL

Specifications

Hydraulic Controls; For The Transmission
621B TRACTOR POWER TRAIN

Pressure Control Valve; For The Transmission (1P3236 and 8P2800)
621B TRACTOR POWER TRAIN

Bench Test Procedures

Bench Test Procedure for a 621, 621B, 623B, and 627B Wheel Tractor-Scraper Transmission{3030, 3073}
Bench Test Procedure for a 621, 621B, 623B, and 627B Wheel Tractor-Scraper Transmission{3030, 3073}

Disassembly and Assembly

Transmission Hydraulic Control Valves
621B & 623B TRACTORS POWER TRAIN

Service Magazine

Correction To Service Manual Information For Adjustment Of Shift Points On Eight-Speed Semi-Automatic Transmissions{3167,0374}
1977/02/28

Automatic Downshift Feature Prevents Shifts Between Eighth And Second Speed At High Ground Speeds{3150,3157,3158,3167,3178}
1978/12/04

One-Piece Drive Shaft Used In Place Of Coupling And Two Shafts{3252,3253}
1978/12/18

Screen Now Used In 7 And 8-Speed Power Shift Transmission Governor Oil Supply And Signal Lines{3167,3179,3151,3004}
1979/10/15

Extension Cable Makes It Easier To Use ICM Transmission Control Monitor {3168,0600,1408}
1989/10/09

WHEEL & FINAL DRIVE GP

Special Instruction

Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}
Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}

Inspection of the Duo-cone Seal Gp{4050, 4051, 7561}
Inspection of the Duo-cone Seal Gp{4050, 4051, 7561}

Service Letter-NACD

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-Australia

Service Letter-CFEL

Service Letter-CSARL

Service Letter-Americas

Specifications

Adjustment of the Wheel Bearings
621B TRACTOR POWER TRAIN

Final Drive, Wheels, Brakes; and Axles
621B TRACTOR POWER TRAIN

Tool Operating Manual

149-7173 Bearing Handling Bracket Assembly {0374, 0599, 0629, 0632, 4006, 4008, 7551}
149-7173 Bearing Handling Bracket Assembly {0374, 0599, 0629, 0632, 4006, 4008, 7551}

Service Letter-China

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-Asia

Reuse And Salvage Guidelines

Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}

Procedures to Salvage Thrust Faces on Planetary Carriers {3160, 4050, 4051, 4093}
Procedures to Salvage Thrust Faces on Planetary Carriers {3160, 4050, 4051, 4093}

Thermal Spray Procedures for WTS Front Spindle {0679, 4051, 4201, 4205, 4208}
Thermal Spray Procedures for WTS Front Spindle {0679, 4051, 4201, 4205, 4208}

Thermal Spray Procedures for Wheel Tractor Scraper (WTS) Axle, Spindle, and Shafts {0679, 4001, 4008, 4051, 4205}
Thermal Spray Procedures for Wheel Tractor Scraper (WTS) Axle, Spindle, and Shafts {0679, 4001, 4008, 4051, 4205}

Contamination Control Guidelines

Service Letter-APD

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Disassembly and Assembly

Axles
621B & 623B TRACTORS POWER TRAIN

Final Drive
621B & 623B TRACTORS POWER TRAIN

Final Drive Gear And Hub
621B & 623B TRACTORS POWER TRAIN

Wheels
621B & 623B TRACTORS POWER TRAIN

Wheel Bearings And Seals
621B & 623B TRACTORS POWER TRAIN

Axle Housing
621B & 623B TRACTORS POWER TRAIN

Tires And Wheels, Wheel Bearings And Duo-Cone Seals (621 Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS

Axle Housings (621B Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS

Service Magazine

Remove Block Assemblies Used For Shipment{7505,7100,4059,3250}
1981/04/27

Conversion Of Earlier Axle Housings To New Stronger Design{3260,4002,4051,0665}
1982/08/23

New Differential Thrust Pin Can Be Adjusted From Outside The Case{3258,3280,4051,4059,7051}
1982/11/08

Salvage Procedures For Final Drive Planet Carrier {4093,4092,4050}
1984/01/16

2G2827 Block Assembly Gives Support To Hitch During Tractor-Scraper Separation{0640,0643,3258,4059,7100}
1977/11/07

Bolt Torque Increased For Correct Wheel Bearing Adjustment{4208}
1987/01/19

Method To Put Lubricant On Brake Camshaft Bearing Changed{4269,4251,4261,4051,3260}
1978/12/18

Coolant Now Used In Wheels To Prevent Burned Tire Beads And Possible Tire Explosion{4201}
1979/12/17

New Axle Housing And Hub Used In Final Drive And Wheel Group{4051,4054}
1990/09/24

New Housing Assembly Used In Final Drive And Wheel Group{4051,4059}
1992/02/17

New Axle Shafts Are Now Used On Certain Wheel Tractor-Scrapers {4051}
2012/12/03

Determining the Severity of a Leak of the Duo-cone Seal Gp {4050, 4051, 7561}
2010/02/25

WHEEL GP

Special Instruction

Installation Of 2G4553 Thrust Plate{4201, 4209}
Installation Of 2G4553 Thrust Plate{4201, 4209}

Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}
Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}

Inspection of the Duo-cone Seal Gp{4050, 4051, 7561}
Inspection of the Duo-cone Seal Gp{4050, 4051, 7561}

Installation Guide for the Tire Monitoring System on Cat® and Non-Cat Equipment {4203, 7490}
Installation Guide for the Tire Monitoring System on Cat^® and Non-Cat Equipment {4203, 7490}

Rim Inspection Guidelines {4202, 4209}
Rim Inspection Guidelines {4202, 4209}

Service Letter-NACD

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-Australia

Service Letter-CFEL

Service Letter-CSARL

Service Letter-Americas

Specifications

Adjustment of the Wheel Bearings
621B TRACTOR POWER TRAIN

Final Drive, Wheels, Brakes; and Axles
621B TRACTOR POWER TRAIN

Tool Operating Manual

149-7173 Bearing Handling Bracket Assembly {0374, 0599, 0629, 0632, 4006, 4008, 7551}
149-7173 Bearing Handling Bracket Assembly {0374, 0599, 0629, 0632, 4006, 4008, 7551}

226-2380 Adjustable C-Hook Extension{0374, 0599, 0632, 0727, 1122, 3258, 4050, 4084, 4208, 7561}
226-2380 Adjustable C-Hook Extension{0374, 0599, 0632, 0727, 1122, 3258, 4050, 4084, 4208, 7561}

Service Letter-China

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-Asia

Reuse And Salvage Guidelines

Procedures to Salvage Thrust Faces on Planetary Carriers {3160, 4050, 4051, 4093}
Procedures to Salvage Thrust Faces on Planetary Carriers {3160, 4050, 4051, 4093}

Thermal Spray Procedures for OHT and WTS Rear Wheel - Bearing Bores {0679, 4201}
Thermal Spray Procedures for OHT and WTS Rear Wheel - Bearing Bores {0679, 4201}

Thermal Spray Procedures for OHT and WTS Front Wheel - Bearing Bores {0679, 4006, 4201}
Thermal Spray Procedures for OHT and WTS Front Wheel - Bearing Bores {0679, 4006, 4201}

Thermal Spray Procedures for WTS Front Spindle {0679, 4051, 4201, 4205, 4208}
Thermal Spray Procedures for WTS Front Spindle {0679, 4051, 4201, 4205, 4208}

Thermal Spray Procedures for Wheel Dozer, Integrated Toolcarrier, and Wheel Tractor Scraper Hub {0679, 4051}
Thermal Spray Procedures for Wheel Dozer, Integrated Toolcarrier, and Wheel Tractor Scraper Hub {0679, 4051}

Service Letter-APD

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Disassembly and Assembly

Axles
621B & 623B TRACTORS POWER TRAIN

Final Drive
621B & 623B TRACTORS POWER TRAIN

Final Drive Gear And Hub
621B & 623B TRACTORS POWER TRAIN

Wheels
621B & 623B TRACTORS POWER TRAIN

Wheel Bearings And Seals
621B & 623B TRACTORS POWER TRAIN

Axle Housing
621B & 623B TRACTORS POWER TRAIN

Tires And Wheels, Wheel Bearings And Duo-Cone Seals (621 Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS

Axle Housings (621B Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS

Service Magazine

Remove Block Assemblies Used For Shipment{7505,7100,4059,3250}
1981/04/27

Conversion Of Earlier Axle Housings To New Stronger Design{3260,4002,4051,0665}
1982/08/23

Salvage Procedures For Final Drive Planet Carrier {4093,4092,4050}
1984/01/16

2G2827 Block Assembly Gives Support To Hitch During Tractor-Scraper Separation{0640,0643,3258,4059,7100}
1977/11/07

Bolt Torque Increased For Correct Wheel Bearing Adjustment{4208}
1987/01/19

New Wheels And Brake Drums Have More Studs{4208,4250,4252}
1978/03/20

Hardened Nuts Now Used To Hold Brake Drum To Wheel{4252,4251}
1979/09/17

Coolant Now Used In Wheels To Prevent Burned Tire Beads And Possible Tire Explosion{4201}
1979/12/17

New Axle Housing And Hub Used In Final Drive And Wheel Group{4051,4054}
1990/09/24

New Housing Assembly Used In Final Drive And Wheel Group{4051,4059}
1992/02/17

Determining the Severity of a Leak of the Duo-cone Seal Gp {4050, 4051, 7561}
2010/02/25

YOKE GP

Reuse And Salvage Guidelines

Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}
Procedure to Machine Damaged Transmission and Differential Yokes {3030, 3253, 3258}

COOLER GP

Special Instruction

Installation Of 7N4804 Retarder Oil Cooler Water Lines Replacement Group{1368, 3122}
Installation Of 7N4804 Retarder Oil Cooler Water Lines Replacement Group{1368, 3122}

Installation Of Mechanical Shut-Off Groups{1366}
Installation Of Mechanical Shut-Off Groups{1366}

Specifications

Oil Cooler (621B and 623B - Torque Converter Oil, 980C - Hydraulic Oil)
3406 ENGINE FOR CATERPILLAR BUILT MACHINES

Disassembly and Assembly

Transmission Oil Cooler
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS

Service Magazine

Field Repair Of Cooler Cores Made Of Aluminium{1063,1374,1375}
1977/09/05

New Transmission/Retarder Oil Cooler Core Group; Modification To Install Temperature Sensor{1375,1368}
1991/11/11

OIL CHANGE GP-HIGH SPEED

Contamination Control Guidelines

SHAFT GP-PIVOT

Reuse And Salvage Guidelines

PAN GP-TRANSMISSION OIL

Contamination Control Guidelines

DRIVE GP-FINAL

Special Instruction

Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}
Installation Of Replacement Axle Housings On Tractor-Scrapers{3260}

Assembly and Installation of Conventional Duo-Cone Seals{7561, 7561}
Assembly and Installation of Conventional Duo-Cone Seals{7561, 7561}

Installation of Conventional Duo-Cone Seals{7561}
Installation of Conventional Duo-Cone Seals{7561}

Installation of Inverted Duo-Cone Seals{7561}
Installation of Inverted Duo-Cone Seals{7561}

Inspection of the Duo-cone Seal Gp{4050, 4051, 7561}
Inspection of the Duo-cone Seal Gp{4050, 4051, 7561}

Service Letter-NACD

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-Australia

Service Letter-CFEL

Service Letter-CSARL

Service Letter-Americas

Specifications

Adjustment of the Wheel Bearings
621B TRACTOR POWER TRAIN

Final Drive, Wheels, Brakes; and Axles
621B TRACTOR POWER TRAIN

Tool Operating Manual

226-2380 Multi-Purpose Lifting Bracket Group{3258, 4050, 4084, 4208, 7561}
226-2380 Multi-Purpose Lifting Bracket Group{3258, 4050, 4084, 4208, 7561}

149-7173 Bearing Handling Bracket Assembly {0374, 0599, 0629, 0632, 4006, 4008, 7551}
149-7173 Bearing Handling Bracket Assembly {0374, 0599, 0629, 0632, 4006, 4008, 7551}

127-8458 Final Drive Disassembly and Assembly Bench {0374, 0599, 0722, 0727}
127-8458 Final Drive Disassembly and Assembly Bench {0374, 0599, 0722, 0727}

226-2380 Adjustable C-Hook Extension{0374, 0599, 0632, 0727, 1122, 3258, 4050, 4084, 4208, 7561}
226-2380 Adjustable C-Hook Extension{0374, 0599, 0632, 0727, 1122, 3258, 4050, 4084, 4208, 7561}

M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}
M0074040: 509-5085 Lifting Tool Assembly {0374, 0599, 0629, 0632, 3023, 3159, 3160, 5363, 7000}

Service Letter-China

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Service Letter-Asia

Reuse And Salvage Guidelines

Reusability of Drive Train Gears {3002, 3159, 3256, 4055}
Reusability of Drive Train Gears {3002, 3159, 3256, 4055}

Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}
Specifications for Inspection of Driveline Fasteners {3030, 3101, 3159, 3253, 3258, 3278, 4050}

Procedures to Salvage Thrust Faces on Planetary Carriers {3160, 4050, 4051, 4093}
Procedures to Salvage Thrust Faces on Planetary Carriers {3160, 4050, 4051, 4093}

Thermal Spray Procedures for WTS Front Spindle {0679, 4051, 4201, 4205, 4208}
Thermal Spray Procedures for WTS Front Spindle {0679, 4051, 4201, 4205, 4208}

Contamination Control Guidelines

Service Letter-APD

The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles
The Axle Housings Need To Be Replaced On Certain OEM Manufactured Steel Mill Vehicles

Disassembly and Assembly

Axles
621B & 623B TRACTORS POWER TRAIN

Final Drive
621B & 623B TRACTORS POWER TRAIN

Final Drive Gear And Hub
621B & 623B TRACTORS POWER TRAIN

Wheels
621B & 623B TRACTORS POWER TRAIN

Wheel Bearings And Seals
621B & 623B TRACTORS POWER TRAIN

Axle Housing
621B & 623B TRACTORS POWER TRAIN

Tires And Wheels, Wheel Bearings And Duo-Cone Seals (621 Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS

Axle Housings (621B Scraper)
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS

Service Magazine

Remove Block Assemblies Used For Shipment{7505,7100,4059,3250}
1981/04/27

Conversion Of Earlier Axle Housings To New Stronger Design{3260,4002,4051,0665}
1982/08/23

Salvage Procedures For Final Drive Planet Carrier {4093,4092,4050}
1984/01/16

2G2827 Block Assembly Gives Support To Hitch During Tractor-Scraper Separation{0640,0643,3258,4059,7100}
1977/11/07

Bolt Torque Increased For Correct Wheel Bearing Adjustment{4208}
1987/01/19

New Wheels And Brake Drums Have More Studs{4208,4250,4252}
1978/03/20

Hardened Nuts Now Used To Hold Brake Drum To Wheel{4252,4251}
1979/09/17

Coolant Now Used In Wheels To Prevent Burned Tire Beads And Possible Tire Explosion{4201}
1979/12/17

New Axle Housing And Hub Used In Final Drive And Wheel Group{4051,4054}
1990/09/24

New Housing Assembly Used In Final Drive And Wheel Group{4051,4059}
1992/02/17

Product Information Guide, SEBF1015, "Improving Component Durability" , "Final Drives and Differentials" is now available {3258, 3282, 4050}
2004/04/12

Final Drive Duo-Cone Seal Assembly Information Update {7561}
2010/04/15

Determining the Severity of a Leak of the Duo-cone Seal Gp {4050, 4051, 7561}
2010/02/25

FILTER & LINES GP-TORQUE CONV

Screen Now Used In 7 And 8-Speed Power Shift Transmission Governor Oil Supply And Signal Lines{3167,3179,3151,3004}
1979/10/15

Truck sale:

Caterpillar 621B
- Road Scraper
MACALLISTER MACHINERY CO., INC

Caterpillar 621B
- Road Scraper
FINNING CANADA

46,500

Caterpillar 621B, Road Scraper, Construction
- Road Scraper
QUINN COMPANY

46,500

Caterpillar 621B, Road Scraper, Construction
- Road Scraper
QUINN COMPANY