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1U317 CONTROL VALVE GROUP--Part 1 of 2 Serial No. 45P2341-Up 9J5738 Valve parts are shown on Page 134 621B


HYDRAULIC SYSTEM
VALVE GP-CONTROL
CYLINDER GP
ACCUMULATOR GP
OPERATOR STATION
SEAT GP

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

HYDRAULIC SYSTEM

VALVE GP-CONTROL
VALVE GP-CONTROL
8J-5920 VALVE GP-CONTROL
VALVE GP-CONTROL
8J-5920 VALVE GP-CONTROL
VALVE GP-CONTROL
1U-0317 VALVE GP-CONTROL
VALVE GP-CONTROL
1U-0317 VALVE GP-CONTROL
 

#UEG0807S0610
 

1U-0317: VALVE GP-CONTROL

1U317 CONTROL VALVE GROUP--Part 1 of 2
Serial No. 45P2341-Up
9J5738 Valve parts are shown on Page 134
c236933 UEG0807S
1U0317 VALVE GP-CONTROL Parts scheme
  For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9J-5738 Y [1] VALVE GROUP  
    (Separate Illustration)
2. 9S-8002 [1] PLUG  
3. 3J-7354 [1] SEAL  
4. 9S-4187 [1] PLUG  
5. 3K-0360 [1] SEAL  
6. 4J-1184 [2] PLUG ASSEM.  
7. 7F-8607 [2] SEAL  
8. 9S-8001 [1] PLUG  
9. 4J-7533 [1] SEAL  
10. 2J-6274 [7] SEAL  
11. 3H-3385 [1] SEAL  
12. 2H-5001 [4] SEAL  
13. 0T-0573 [6] BOLT  
14. 5M-2894 [6] WASHER  
15. 8F-9206 [1] SEAL  
16. 9S-8004 [1] PLUG  
  3J-1907 [1] SEAL  
17. 7S-1201 [2] SCREW  
  1U-3332 [1] RETAINER  
  Y   SEPARATE ILLUSTRATION
 

#UEG0807S0611
 

1U-0317: VALVE GP-CONTROL

1U317 CONTROL VALVE GROUP--Part 2 of 2
Serial No. 45P2341-Up
c173328 UEG0807S
1U0317 VALVE GP-CONTROL Parts scheme
  For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0S-1591 [2] BOLT  
2. 5M-2894 [3] WASHER  
3. 4J-0521 [1] SEAL  
4. 4J-0525 [1] SEAL  
5. 0T-0768 [4] BOLT  
  5P-8244 [4] WASHER  
6. 1U-0314 [1] COVER  
7. 1J-9533 [1] SPRING  
8. 1U-0316 [1] VALVE GROUP  
9. 9S-8005 [1] PLUG  
10. 3K-0360 [1] SEAL  
11. 6V-1834 [1] SEAL  
12. 8M-7145 [1] WASHER  
13. 0L-1351 [1] BOLT  
14. 0S-1585 [4] BOLT  
15. 1P-4579 [2] FLANGE  
16. 5P-8245 [4] WASHER  
 

#UEG0807S0612
 

8J-9446: CYLINDER GP-LOAD

8J9446 LOAD CYLINDER GROUP (Change 0-1)--5.50" Bore X 9.90" Stroke
Serial No. 45P1 to 45P1088 inclusive
c201332 UEG0807S
8J9446 CYLINDER GP-LOAD Parts scheme
  For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2J-0564 [1] NUT  
2. 5J-4988 [1] SEAL ASSEM.  
3. 6J-5773 [1] WASHER  
4. 8J-9447 [1] CYLINDER ASSEM.  
    (Includes)
5. 8J-0201 [1] BEARING  
6. 8J-9935 [1] LUG  
7. 1A-8063 [4] BOLT  
  3B-4512 [4] LOCKWASHER  
8. 8J-9451 [1] ROD ASSEM.  
    (Includes)
9. 8J-0201 [1] BEARING  
10. 1K-6982 [1] SEAL  
11. 8J-9454 [1] SEAL  
12. 5J-3620 [1] RING  
13. 2K-2961 [1] RING  
14. 2H-9247 [1] SEAL  
15. 7J-2672 [1] PISTON  
16. 4J-4606 [1] RING  
17. 8J-9453 [1] HEAD  
 

#UEG0807S0613
 

8J-9446: CYLINDER GP-LOAD

8J9446 LOAD CYLINDER GROUP (Change 2)--5.50" Bore X 9.90" Stroke
Serial No. 45P1089-Up
c157465 UEG0807S
8J9446 CYLINDER GP-LOAD Parts scheme
  For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2J-0564 [1] NUT  
2. 5J-4988 [1] SEAL ASSEM.  
3. 3G-0793 [1] HEAD  
4. 8J-9447 [1] CYLINDER ASSEM.  
    (Includes)
5. 8J-0201 [1] BEARING  
6. 8J-9935 [1] LUG  
7. 1A-8063 [4] BOLT  
  3B-4512 [4] LOCKWASHER  
8. 8J-9451 [1] ROD ASSEM.  
    (Includes)
9. 8J-0201 [1] BEARING  
10. 1K-6982 [1] SEAL  
11. 5J-0964 C [1] SEAL  
12. 5J-3620 [1] RING  
13. 2K-2961 [1] RING  
14. 2H-9247 [1] SEAL  
15. 7J-2672 [1] PISTON  
16. 4J-4606 [1] RING  
  C   INDICATES CHANGE
 

#UEG0807S0614
 

3G-0725: ACCUMULATOR GP

3G725 ACCUMULATOR GROUP
c207076 UEG0807S
3G0725 ACCUMULATOR GP Parts scheme
  For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6J-0366 [1] VALVE AS  
  6J-0368 [1] CAP  
  5J-5148 [1] CORE  
2. 5M-6708 [1] WASHER  
3. 0S-1590 [2] BOLT  
4. 3B-4506 [9] LOCKWASHER  
5. 1P-3700 [3] SEAL-RECTANGULAR  
6. 7J-5352 [1] ACCUMULATOR AS  
7. 8J-1543 [1] TUBE AS  
8. 7J-5311 [1] PLATE-WARNING  
9. 0S-1588 [4] BOLT  
10. 0S-1571 [3] BOLT  
11. 7J-4699 [1] COVER AS  
12. 6B-7469 [3] SPACER  
13. 1D-4627 [6] BOLT  
14. 7J-4704 [1] HEAD  
15. 2K-4096 [1] RING  
16. 5F-3144 [1] SEAL-O-RING  
17. 9J-9318 [1] PISTON  
18. 6J-9354 [2] SEAL AS  
19. [1] MANIFOLD  
 

#UEG0807S0615
 

8D-6903: SEAT GP-SUSPENSION

8D6903 SUSPENSION SEAT GROUP
Serial No. 45P1 to 45P906 inclusive
9D7019 Seat and 9D4720 Suspension parts are shown on Pages 142A, 142B & 143
c149233 UEG0807S
8D6903 SEAT GP-SUSPENSION Parts scheme
  For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9D-7019 Y [1] SEAT GROUP  
    (Separate Illustration)
2. 8D-6899 [1] SEAT BELT  
3. 8S-0933 [3] EYE BOLT  
  5B-3254 [3] NUT  
4. 3B-4507 [2] LOCKWASHER  
  4B-4279 [2] WASHER  
5. 9D-7079 [1] HOSE ASSEM.  
6. 9D-4720 Y [1] SUSPENSION GROUP  
    (Separate Illustration)
  0S-1617 [4] BOLT  
7. 6S-2289 [1] TEE  
8. 0S-1585 [4] BOLT  
  3B-4508 [4] LOCKWASHER  
9. 9D-7078 [1] HOSE ASSEM.  
10. 9D-7081 [1] HOSE ASSEM.  
11. 5P-2618 [1] CONNECTOR  
  1J-9671 [1] SEAL  
12. 6K-9194 [5] ELBOW (swivel)  
13. 2P-7215 [2] ELBOW  
  2P-1279 [2] LOCKNUT  
14. 030-3978 [2] CONNECTOR  
  3J-7354 [1] SEAL  
15. 8D-6894 [1] WASHER  
16. 3B-4607 [3] COTTER PIN  
17. 9D-7058 [1] BELT  
18. 9D-7082 [1] HOSE ASSEM.  
19. 2R-6806 [2] CONNECTOR  
20. 3J-1907 [2] SEAL  
21. 9D-7077 [1] HOSE ASSEM.  
22. 3S-8664 [1] CLIP  
  Y   SEPARATE ILLUSTRATION
 

#UEG0807S0616
 

8D-6903: SEAT GP-SUSPENSION

8D6903 SUSPENSION SEAT GROUP
Serial No. 45P907 to 45P1098 inclusive
9D7019 Seat and 2G2599 Suspension parts are shown on Pages 142A and 143C
c153279 UEG0807S
8D6903 SEAT GP-SUSPENSION Parts scheme
  For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9D-7019 Y [1] SEAT GROUP  
    (Separate Illustration)
2. 8D-6899 [1] SEAT BELT  
3. 8S-0933 [3] EYE BOLT  
  5B-3254 [3] NUT  
4. 3B-4507 [2] LOCKWASHER  
  4B-4279 [2] WASHER  
5. 9D-7079 [1] HOSE ASSEM.  
6. 2G-2599 CY [1] SUSPENSION GROUP  
    (Separate Illustration)
  0S-1617 [4] BOLT  
7. 6S-2289 [1] TEE  
8. 0S-1585 [4] BOLT  
  3B-4508 [4] LOCKWASHER  
9. 9D-7078 [1] HOSE ASSEM.  
10. 9D-7081 [1] HOSE ASSEM.  
11. 5P-2618 [1] CONNECTOR  
  1J-9671 [1] SEAL  
12. 6K-9194 [5] ELBOW (swivel)  
13. 2P-7215 C [3] ELBOW  
  2P-1279 C [3] LOCKNUT  
14. 030-3978 [2] CONNECTOR  
  3J-7354 [1] SEAL  
15. 8D-6894 [1] WASHER  
16. 3B-4607 [3] COTTER PIN  
17. 9D-7058 [1] BELT  
18. 9D-7082 [1] HOSE ASSEM.  
19. 2R-6806 [2] CONNECTOR  
20. 3J-1907 [2] SEAL  
21. 9D-7077 [1] HOSE ASSEM.  
22. 3S-8664 [1] CLIP  
23. 7H-3937 C [4] LOCKWASHER  
24. 030-7962 C [1] ELBOW (swivel)  
25. 8K-4071 C [1] HOSE ASSEM. 11.94 dm(47 in.)  
26. 8K-1684 C [1] HOSE ASSEM. 8.13 dm(32 in.)  
  001-6498 C [1] ELBOW  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0807S0617
 

8D-6903: SEAT GP-SUSPENSION

8D6903 SUSPENSION SEAT GROUP
Serial No. 45P1099 to 45P1200 inclusive
9D7019 Seat and 2G5400 Suspension parts are shown on Pages 142A, 143E and 143F
c156838 UEG0807S
8D6903 SEAT GP-SUSPENSION Parts scheme
  For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9D-7019 Y [1] SEAT GROUP  
    (Separate Illustration)
2. 8D-6899 [1] SEAT BELT  
3. 8S-0933 [3] EYE BOLT  
  5B-3254 [3] NUT  
4. 3B-4507 [2] LOCKWASHER  
  4B-4279 [2] WASHER  
5. 9D-7079 [1] HOSE ASSEM.  
6. 2G-5400 CY [1] SUSPENSION GROUP  
    (Separate Illustration)
  0S-1617 [4] BOLT  
7. 6S-2289 [1] TEE  
8. 0S-1585 [4] BOLT  
  3B-4508 [4] LOCKWASHER  
9. 9D-7078 [1] HOSE ASSEM.  
10. 9D-7081 [1] HOSE ASSEM.  
11. 5P-2618 [1] CONNECTOR  
  1J-9671 [1] SEAL  
12. 6K-9194 [5] ELBOW (swivel)  
13. 2P-7215 [3] ELBOW  
  2P-1279 [3] LOCKNUT  
14. 030-3978 [2] CONNECTOR  
  3J-7354 [1] SEAL  
15. 8D-6894 [1] WASHER  
16. 3B-4607 [3] COTTER PIN  
17. 9D-7058 [1] BELT  
18. 9D-7082 [1] HOSE ASSEM.  
19. 2R-6806 [2] CONNECTOR  
20. 3J-1907 [2] SEAL  
21. 9D-7077 [1] HOSE ASSEM.  
22. 3S-8664 [1] CLIP  
23. 7H-3937 [4] LOCKWASHER  
24. 030-7962 [1] ELBOW (swivel)  
25. 8K-4071 [1] HOSE ASSEM. 11.94 dm(47 in.)  
26. 8K-1684 [1] HOSE ASSEM. 8.13 dm(32 in.)  
  001-6498 [1] ELBOW  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0807S0618
 

8D-6903: SEAT GP-SUSPENSION

8D6903 SUSPENSION SEAT GROUP
Serial No. 45P1201 to 45P1252 inclusive
2G6255 Seat and 2G5400 Suspension parts are shown on Pages 142A-1, 143E and 143F
c159548 UEG0807S
8D6903 SEAT GP-SUSPENSION Parts scheme
  For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2G-6255 CY [1] SEAT GROUP  
    (Separate Illustration)
2. 8D-6899 [1] SEAT BELT  
3. 8S-0933 [3] EYE BOLT  
  5B-3254 [3] NUT  
4. 3B-4507 [2] LOCKWASHER  
  4B-4279 [2] WASHER  
5. 9D-7079 [1] HOSE ASSEM.  
6. 2G-5400 Y [1] SUSPENSION GROUP  
    (Separate Illustration)
  0S-1618 C [4] BOLT  
7. 6S-2289 [1] TEE  
8. 0S-1585 [4] BOLT  
  3B-4508 [4] LOCKWASHER  
9. 9D-7078 [1] HOSE ASSEM.  
10. 9D-7081 [1] HOSE ASSEM.  
11. 5P-2618 [1] CONNECTOR  
  1J-9671 [1] SEAL  
12. 6K-9194 [5] ELBOW (swivel)  
13. 2P-7215 [3] ELBOW  
  2P-1279 [3] LOCKNUT  
14. 030-3978 [2] CONNECTOR  
  3J-7354 [1] SEAL  
15. 8D-6894 [1] WASHER  
16. 3B-4607 [3] COTTER PIN  
17. 9D-7058 [1] BELT  
18. 9D-7082 [1] HOSE ASSEM.  
19. 2R-6806 [2] CONNECTOR  
20. 3J-1907 [2] SEAL  
21. 9D-7077 [1] HOSE ASSEM.  
22. 3S-8664 [1] CLIP  
23. 7H-3937 [4] LOCKWASHER  
24. 030-7962 [1] ELBOW (swivel)  
25. 8K-4071 [1] HOSE ASSEM. 11.94 dm(47 in.)  
26. 8K-1684 [1] HOSE ASSEM. 8.13 dm(32 in.)  
  001-6498 [1] ELBOW  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0807S0619
 

8D-6903: SEAT GP-SUSPENSION

8D6903 SUSPENSION SEAT GROUP
Serial No. 45P1253 to 1499, 1501 to 1517, 1519 to 1523, 1525 to 1530, 1532 to 1534, 1536 to 1549, 1551 to 1553, 1556, 1558,
1559, 1561, 1563, 1565 to 1568, 1571 to 1573, 1575, 1576, 1578 to 1598, 1602 to 1604, 1607, 1619, 1634, 1641 to 1643, 1645,
1647 and 45P1659 inclusive. 2G6470 Seat & 2G6480 Suspension parts are shown on Pages 142A-1, 143G, 143H, 143J and 143K
c160945 UEG0807S
8D6903 SEAT GP-SUSPENSION Parts scheme
  For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2G-6470 YC [1] SEAT GROUP  
    (Separate Illustration)
2. 8D-6899 [1] SEAT BELT  
3. 8S-0933 [3] EYE BOLT  
  5B-3254 [3] NUT  
4. 3B-4507 [2] LOCKWASHER  
  4B-4279 [2] WASHER  
5. 9D-7079 [1] HOSE ASSEM.  
6. 2G-6480 YC [1] SUSPENSION GROUP  
    (Separate Illustration)
  1T-0765 C [4] BOLT  
7. 6S-2289 [1] TEE  
8. 0S-1585 [4] BOLT  
  3B-4508 [4] LOCKWASHER  
9. 9D-7078 [1] HOSE ASSEM.  
10. 9D-7081 [1] HOSE ASSEM.  
11. 5P-2618 [1] CONNECTOR  
  1J-9671 [1] SEAL  
12. 6K-9194 [5] ELBOW (swivel)  
13. 2P-7215 [3] ELBOW  
  2P-1279 [3] LOCKNUT  
14. 030-3978 [2] CONNECTOR  
  3J-7354 [1] SEAL  
15. 8D-6894 [1] WASHER  
16. 3B-4607 [3] COTTER PIN  
17. 9D-7058 [1] BELT  
18. 9D-7082 [1] HOSE ASSEM.  
19. 2R-6806 [2] CONNECTOR  
20. 3J-1907 [2] SEAL  
21. 9D-7077 [1] HOSE ASSEM.  
22. 3S-8664 [1] CLIP  
23. 030-7962 [1] ELBOW (swivel)  
24. 8K-4071 [1] HOSE ASSEM. 11.94 dm(47 in.)  
25. 8K-1684 [1] HOSE ASSEM. 8.13 dm(32 in.)  
  001-6498 [1] ELBOW  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

Information:

Special Instruction
Installation Of 1U317 Control Valve Group{5313}
Installation Of 1U317 Control Valve Group{5313}
Specifications
1U317 and 9J5740 Control Valve
621, 623 & 627 TRACTORS CUSHION-HITCH
Control Valve
621B & 627B SCRAPERS HYDRAULIC SYSTEM
Apron Control Valve<BR> (4J8500)
621B, 623B & 627B WHEEL TRACTOR-SCRAPERS AIR SYSTEM AND BRAK
Tool Operating Manual
4C-9910 Portable Hydraulic Tester (Flow 125 GPM) {0599, 0784, 5050, 5057, 5095}
4C-9910 Portable Hydraulic Tester (Flow 125 GPM) {0599, 0784, 5050, 5057, 5095}
Disassembly and Assembly
Scraper Hydraulic Control Valve
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Apron Air Control Valve
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Cushion Hitch Control Valve
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Push-Pull Control Valve
621 B & 627B TRACTOR-SCRAPER VEHICLE SYSTEMS
Service Magazine
Change Made To Cushion Hitch Lines Groups{5313,7107}
1980/06/23
Improved Clamp Bars Hold Scraper Hydraulic Lines On Cushion Hitch{5057,5300}
1980/11/03
Warning: Use Correct Seal On Seat Assembly For Valve Group In Steering Valve Group{4307,4312,4322}
1980/12/01
Retainer Used In Implement Control Valve Group{5069,5051}
1981/06/29
Improvement To Scraper Control Valve Group{5304,5051,6203}
1982/05/17
Correct Installation Of 1U317 Control Valve Group For Cushion Hitch{5313,7107}
1982/05/24
New Bolts And Rod Assemblies Used In Trailing Unit Control Groups{5050}
1983/05/16
New Snap Ring Will Not Restrict Valve Stem Movement{5304}
1984/05/21
New Lip-Type Seal Helps Prevent Leaks In Hydraulic Control Valve Groups{5050}
1984/06/11
New Cushion-Hitch Pump Available{5050,5073,5300,5316}
1985/03/18
Tractor To Scraper Lines Groups Improved{5300,5304,5057}
1985/10/28
If Loose Bolts Are A Problem, A Modification Can Be Made To The Plate Used To Hold The Leveling Valve For The Cushion Hitch{5313,7107}
1979/04/30
New Locknut And Thread Lock Compound Used On Control Rod For Cushion Hitch Valve{5313,7107,5057}
1979/06/04
Change Made To Cushion Hitch Leveling Valve Group{5313}
1979/08/20
The 6V-8633 Connector Has Changed {5057, 7553}
2005/11/28

Caterpillar Parts SIS Catalog 621B :

VALVE GP-CUSHION HITCH CONT
9J-5740 VALVE GP-CUSHION HITCH CONT
VALVE GP-CUSHION HITCH CONT
9J-5740 VALVE GP-CUSHION HITCH CONT
VALVE GP-CUSHION HITCH CONT
9J-5740 VALVE GP-CUSHION HITCH CONT
VALVE GP-CUSHION HITCH CONT
9J-5740 VALVE GP-CUSHION HITCH CONT
CONTROL VALVE GROUP
8J-9329 CONTROL VALVE GROUP
CONTROL VALVE GROUP
8J-9329 CONTROL VALVE GROUP
VALVE GP-CONTROL
8J-5920 VALVE GP-CONTROL
VALVE GP-CONTROL
8J-5920 VALVE GP-CONTROL
VALVE GP-CONTROL
1U-0317 VALVE GP-CONTROL
CYLINDER GP-LOAD
8J-9446 CYLINDER GP-LOAD
CYLINDER GP-LOAD
8J-9446 CYLINDER GP-LOAD
ACCUMULATOR GP
3G-0725 ACCUMULATOR GP
SEAT GP-SUSPENSION
8D-6903 SEAT GP-SUSPENSION
SEAT GP-SUSPENSION
8D-6903 SEAT GP-SUSPENSION
SEAT GP-SUSPENSION
8D-6903 SEAT GP-SUSPENSION
SEAT GP-SUSPENSION
8D-6903 SEAT GP-SUSPENSION

Truck sale:

Caterpillar 621B
 
Caterpillar 621B
- Road Scraper
MACALLISTER MACHINERY CO., INC
Caterpillar 621B
 
Caterpillar 621B
- Road Scraper
MACALLISTER MACHINERY CO., INC
Caterpillar 621B
 
Caterpillar 621B
- Road Scraper
FINNING CANADA
Caterpillar 621B, Road Scraper, Construction
46,500 
Caterpillar 621B, Road Scraper, Construction
- Road Scraper
QUINN COMPANY
Caterpillar 621B, Road Scraper, Construction
46,500 
Caterpillar 621B, Road Scraper, Construction
- Road Scraper
QUINN COMPANY
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