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8D8140 FUEL LINES GROUP Serial No. 45P993 to 45P1135 inclusive 6N1044 Filter and 4N3287 Pump parts are shown on Page 23D 621B


FUEL SYSTEM
LINES GP-FUEL
FILTER GP-FUEL
PUMP GP-FUEL PRIMING
LUBRICATION SYSTEM
FILTER GP-ENGINE OIL
LINES GP-ENGINE OIL
FUEL SYSTEM
CONTROL GP-GOVERNOR


FUEL SYSTEM

LINES GP-FUEL
 

#UEG0807S0030
 

8D-8140: LINES GP-FUEL OIL

8D8140 FUEL LINES GROUP
Serial No. 45P993 to 45P1135 inclusive
6N1044 Filter and 4N3287 Pump parts are shown on Page 23D
c206265 UEG0807S
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Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2G-1071 [1] HOSE ASSEM. 137 cm(54 in.)  
2. 0S-0509 [2] BOLT  
3. 3B-4506 [7] LOCKWASHER  
4. 8M-2770 [3] CLIP  
5. 6K-9194 [2] ELBOW  
6. 8L-3282 [2] CONNECTOR  
7. 9D-5676 [1] HOSE ASSEM.  
8. 5K-8451 [4] CLIP  
9. 030-7947 C [2] ELBOW  
  3J-1907 C [2] SEAL  
10. 0L-1351 [1] BOLT  
  1D-4717 [1] NUT  
11. 9L-1566 [1] SUPPORT  
12. 6N-0938 C [1] HOSE ASSEM. 86 in. (21.84 dm)  
13. 6N-1044 YC [1] FILTER GROUP  
    (Separate Illustration)
14. 1A-2029 [2] BOLT  
15. 4B-4278 C [4] WASHER  
16. 0S-1594 [2] BOLT  
17. 8M-2773 [2] CLIP  
18. 5H-4778 [1] UNION  
19. 0S-1617 [1] BOLT  
  3B-4505 [1] LOCKWASHER  
  4B-4277 [1] WASHER  
20. 4M-5317 [1] BUSHING  
  8L-6557 [1] CONNECTOR  
21. YC [1] PUMP GROUP  
    (Separate Illustration)
22. 5P-1404 C [1] ADAPTER  
  2M-9780 [1] SEAL  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0807S0031
 

8D-8140: LINES GP-FUEL OIL

8D8140 FUEL LINES GROUP
Serial No. 45P1136-Up
6N1044 Filter and 4N3287 Pump parts are shown on Page 23D
c158606 UEG0807S
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Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2G-1071 [1] HOSE ASSEM. 137 cm(54 in.)  
2. 0S-0509 [2] BOLT  
3. 3B-4506 [7] LOCKWASHER  
4. 4K-8864 C [3] CLIP  
5. 2N-8037 C [2] ELBOW  
6. 6K-1972 C [1] ELBOW  
7. 2G-4506 C [1] HOSE ASSEM. 35.2 cm(138.58 in.)  
8. 4D-7733 C [4] CLIP  
9. 030-7947 [2] ELBOW  
  3J-1907 [2] SEAL  
10. 0L-1351 [1] BOLT  
10. 1D-4717 [1] NUT  
  1D-4717 [1] NUT  
11. 9L-1566 [1] SUPPORT  
12. 6N-0938 [1] HOSE ASSEM.[218.4 CM(86 IN.)  
13. 6N-1044 Y [1] FILTER GROUP  
    (Separate Illustration)
14. 1A-2029 [2] BOLT  
15. 4B-4278 [4] WASHER  
16. 0S-1594 [2] BOLT  
17. 8M-2773 [2] CLIP  
18. 1S-6420 C [1] CLIP  
19. 0S-1617 [1] BOLT  
  3B-4505 [1] LOCKWASHER  
  4B-4277 [1] WASHER  
20. 4S-6399 C [1] CONNECTOR  
21. 4N-3287 CY [1] PUMP ASSEM.  
    (Separate Illustration)
22. 5P-1404 [1] ADAPTER  
  2M-9780 [1] SEAL  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0807S0032
 

6N-1044: FILTER GP-PRIMARY FUEL

6N1044 PRIMARY FUEL FILTER GROUP
Serial No. 45P993-Up
Part of 8D8140 Fuel Lines Group shown on Pages 23B and 23C
c226903 UEG0807S
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Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  1P-2298 [1] VALVE ASSEM.  
    (Part of 6N1045 Assem.)
  8H-2807 [1] NUT  
  8N-4410 C [1] GASKET  
  6N-1045 C [1] BASE ASSEM.  
  1L-3769 [1] RING  
  8H-2778 [1] GASKET  
  9M-2341 [1] ELEMENT ASSEM. (washable)  
  8H-2810 [1] CASE ASSEM.  
  7H-9678 [1] RETAINER  
  2H-3429 [1] RING  
  7S-9323 [1] SPRING  
  C   INDICATES CHANGE
 

#UEG0807S0033
 

4N-3287: PUMP GP-FUEL PRIMING

4N3287 FUEL PRIMING PUMP GROUP
Serial No. 45P993-Up
Part of 8D8140 Fuel Lines Group shown on Pages 23B and 23C
c215540 UEG0807S
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Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1P-0436 [1] GASKET  
2. 4B-3388 [1] BOLT  
    2.86 CM(1.125 IN)LONG
    -OR-
  1B-2790 C [1] BOLT  
    3.49 CM(1.375 IN)LONG
  9M-1974 C [1] WASHER  
    7.95 MM(.313 IN)DIA
3. 0S-1616 [1] BOLT  
    2.54 CM(1 IN)LONG
    -OR-
  7B-2742 C [1] BOLT  
    3.18 CM(1.25 IN)LONG
  5P-0537 C [1] WASHER  
    6.35 MM(.25 IN)DIA
4. 4N-2511 [1] PUMP AS-FUEL PRIMING  
  C   CHANGE FROM PREVIOUS TYPE
 

#UEG0807S0034
 

4N-2281: FILTER GP-OIL

4N2281 OIL FILTER GROUP
Serial No. 45P1 to 1944, 1947, 1954, 1955, 1960 and 45P1975 inclusive
See Engine Oil Lines in 3406 Vehicular Engine book for Engine Oil Filter at
Serial Number not listed above
c217938 UEG0807S
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Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2P-4303 [1] BASE ASSEM.  
    (Includes)
2. 2P-4304 [1] STUD  
3. 7F-9090 C [2] SCREW  
4. 2P-4005 [1] FILTER ASSEM.  
5. 4N-7082 [1] SHIELD  
  C   INDICATES CHANGE
 

#UEG0807S0035
 

4N-2279: LINES GP-ENGINE OIL

4N2279 OIL LINES GROUP--Remote Mount Filter
Serial No. 45P1 to 1944, 1947, 1954, 1955, 1960 and 45P1975 inclusive
c230464 UEG0807S
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Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0L-1351 [6] BOLT  
2. 2S-6160 [2] WASHER  
3. 9L-5717 C [1] COVER  
4. 2P-4305 [2] GASKET  
5. 0S-1591 [4] BOLT  
6. 1D-4717 [6] NUT  
7. 5M-2894 [16] WASHER  
8. 9D-7255 [1] BRACKET ASSEM.  
9. 2M-1538 [2] STUD  
10. 0S-1588 [2] BOLT  
11. 4N-8725 [1] ADAPTER  
12. 4N-8825 [1] HOSE ASSEM. 114.30 cm(45 in.)  
13. 8M-4986 [4] SEAL  
14. 4N-8922 [1] HOSE ASSEM. 101.60 cm(40 in.)  
15. 1P-4578 [8] FLANGE  
16. 0T-0772 [16] BOLT  
  4S-9191 [16] WASHER  
  C   INDICATES CHANGE
 

#UEG0807S0036
 

4N-2279: LINES GP-ENGINE OIL

4N2279 OIL LINES GROUP--Remote Mount Filter
Serial No. 45P1945, 1946, 1948 to 1953, 1956 to 1959, 1961 to 1974 and 45P1976-Up
c217940 UEG0807S
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Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9D-7255 [1] BRACKET ASSEM.  
2. 0L-1351 [6] BOLT  
3. 5M-2894 [16] WASHER  
4. 2S-6160 [2] WASHER  
5. 2P-4305 [2] GASKET  
6. 7N-3300 C [1] ADAPTER  
7. 8M-4986 [4] SEAL  
8. 1P-4578 [8] FLANGE  
9. 0T-0772 [16] BOLT  
  4S-9191 [16] WASHER  
10. 4N-8825 C [1] HOSE ASSEM. 92.7 cm(36.50 in.)  
11. 0S-1571 C [2] BOLT  
12. 4N-2211 C [1] ADAPTER  
  4H-3243 C [1] SEAL (large)  
  3P-1979 C [1] SEAL (small)  
13. 4N-8922 C [1] HOSE ASSEM. 87.6 cm(34.50 in.)  
14. 7F-9090 C [2] SCREW  
15. 0S-1588 [2] BOLT  
16. 2M-1538 [2] STUD  
17. 1D-4717 [6] NUT  
18. 2P-4303 C [1] BASE ASSEM.  
19. 4N-7082 C [1] SHIELD  
20. 9L-5717 [1] COVER  
21. 0S-1591 [4] BOLT  
  C   INDICATES CHANGE
 

#UEG0807S0037
 

8D-7805: CONTROL GP-GOVERNOR

GOVERNOR CONTROL (8D7805 N/S)
c228102 UEG0807S
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Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1B-4669 C [2] COLLAR  
2. 7D-0001 [1] BRACKET  
3. 0S-1594 [4] BOLT  
4. 3B-4506 [12] LOCKWASHER  
5. 4D-2619 [2] BEARING  
6. 8D-7539 [1] PEDAL  
7. 0L-1351 [6] BOLT  
8. 2G-4721 C [1] PLATE ASSEM.  
    (Includes)
  9F-2978 [3] NUT (weld)  
9. 2D-6416 [2] WASHER  
10. 4B-3573 C [2] SETSCREW  
  1B-2578 C [2] NUT  
11. 7B-6473 [1] GASKET  
12. 8D-7801 [1] BRACKET  
13. 8D-7798 [1] SHAFT  
14. 0S-1591 [1] BOLT  
15. 1D-4717 [3] NUT  
16. 2G-4618 C [1] LEVER  
17. 1B-8704 [2] KEY  
18. 4M-0497 [1] NUT  
19. 4D-4064 [1] ROD END  
20. 4M-0496 [1] BOLT  
21. 5B-9079 [2] NUT  
22. 6D-0475 [1] LINK ASSEM.  
23. 2A-5546 [1] BOLT  
  1B-4330 [1] NUT  
24. 1S-5927 [1] LEVER  
25. 4K-4726 [1] ROD END  
26. 3B-1915 [1] BOLT  
27. 6K-1898 C [1] SPRING  
28. 1A-2029 [1] BOLT  
  C   INDICATES CHANGE
 

#UEG0807S0038
 

2G-7340: CONTROL GP-GOVERNOR

2G7340 GOVERNOR CONTROL GROUP--Type 1
Serial No. 45P1742-Up
6D4397 Rotochamber and 4D7695 Valve parts are shown on Page 25B
AN ATTACHMENT
c214900 UEG0807S
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Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3D-8938 [2] HOSE ASSEM. 101.60 cm(40 in.)  
2. 4S-7606 [2] UNION  
3. 4D-7695 Y [1] VALVE ASSEM.  
    (Separate Illustration)
4. 5M-6214 [1] PLUG  
5. 2G-3787 [1] BUTTON  
6. 8L-5008 [1] ELBOW  
7. 4D-2560 [1] UNION  
8. 3D-6931 [1] HOSE ASSEM. 142.24 cm(56 in.)  
9. 5H-4778 [1] UNION  
10. 6B-7639 [1] TEE  
11. 2D-0193 [1] UNION  
12. 2G-3775 [1] BLOCK  
13. 6D-4397 Y [1] ROTOCHAMBER GROUP  
    (Separate Illustration)
14. 5K-1928 [1] BOSS  
15. 0L-1143 [1] BOLT  
  3B-4506 [1] LOCKWASHER  
  0L-1319 [2] WASHER  
  1P-5395 [1] TUBE  
16. 3D-7587 [1] UNION  
17. 3L-6521 [1] TEE  
  Y   SEPARATE ILLUSTRATION
 

#UEG0807S0039
 

2G-7340: CONTROL GP-GOVERNOR

2G7340 GOVERNOR CONTROL GROUP--Type 2
Serial No. 45P1742-Up
6N4397 Rotochamber and 4D7695 Valve parts are shown on Page 25B
AN ATTACHMENT
c171442 UEG0807S
  For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3D-8938 [2] HOSE ASSEM. 101.60 cm(40 in.)  
2. 4S-7606 C [3] ELBOW  
3. 4D-7695 Y [1] VALVE GROUP  
    (Separate Illustration)
4. 5M-6214 [1] PLUG  
5. 2G-3787 [1] BUTTON  
6. 4H-6147 C [1] CONNECTOR  
7. 2R-1576 C [1] ADAPTER  
8. 3D-6931 [1] HOSE ASSEM. 142.24 cm(56 in.)  
9. 5H-4778 [1] UNION  
10. 6B-7639 [1] TEE  
11. 2D-0193 [1] UNION  
12. 2G-3775 [1] BLOCK  
13. 6D-4397 Y [1] ROTOCHAMBER GROUP  
    (Separate Illustration)
14. 5K-1928 [1] BOSS  
15. 0L-1143 [1] BOLT  
  3B-4506 [1] LOCKWASHER  
  0L-1319 [2] WASHER  
  1P-5395 [1] TUBE  
16. 3D-7587 [1] UNION  
17. 2D-7325 C [1] TEE  
18. 5H-4778 C [1] ELBOW  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

Information:

Special Instruction
Repair Of Precombustion Chamber And Direct Injection Adapter Seating Surfaces{1101}
Repair Of Precombustion Chamber And Direct Injection Adapter Seating Surfaces{1101}
Testing Flat-Seat Fuel Injection Valves Using The 5P4150 Nozzle Testing Group{0782, 1254}
Testing Flat-Seat Fuel Injection Valves Using The 5P4150 Nozzle Testing Group{0782, 1254}
7000 Series Nozzles{0782}
7000 Series Nozzles{0782}
Specifications
Secondary Fuel Filter Base - 16G Motor Grader Only
3406 ENGINE FOR CATERPILLAR BUILT MACHINES
Primary Fuel Filter
3406 ENGINE FOR CATERPILLAR BUILT MACHINES
Fuel Filter Base
3406 ENGINE FOR CATERPILLAR BUILT MACHINES
Fuel Injection Nozzles and Adapters
3406C Engines for Caterpillar Built Machines
Tool Operating Manual
Using the 4C-6090 Multichannel Temperature Selector Group{0599, 0701, 0706, 1251, 1254, 1290, 1713}
Using the 4C-6090 Multichannel Temperature Selector Group{0599, 0701, 0706, 1251, 1254, 1290, 1713}
Disassembly and Assembly
Oil And Fuel Filters
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS
Fuel Injection Valves
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS
Service Magazine

Caterpillar Parts SIS Catalog 621B :

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