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3G2721 CARTRIDGE GROUP--14 GPM--Counterclockwise Part of 9J5134 Vane Pump Group shown on Page 179F 621


HYDRAULIC SYSTEM
PUMP GP
LINES GP-HYDRAULIC

WHEEL TRACTOR 621 WHEEL TRACTOR 23H
 621 TRACTOR 23H02223-04298 (MACHINE) UEG0051S 621 23H   (1966)

HYDRAULIC SYSTEM

PUMP GP
VANE PUMP GROUP
9J-5134 VANE PUMP GROUP
VANE PUMP GROUP
9J-5134 VANE PUMP GROUP
CARTRIDGE GP-REAR
3G-2721 CARTRIDGE GP-REAR
HYDRAULIC PUMP ASSEMBLY
7J-0853 HYDRAULIC PUMP ASSEMBLY
VANE PUMP GROUP
9J-5131 VANE PUMP GROUP
VANE PUMP GROUP
9J-5131 VANE PUMP GROUP
 

#UEG0051S0480
 

3G-2721: CARTRIDGE GP-REAR

3G2721 CARTRIDGE GROUP--14 GPM--Counterclockwise
Part of 9J5134 Vane Pump Group shown on Page 179F
c212614 UEG0051S
3G2721 CARTRIDGE GP-REAR Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3G-2714 [4] RETAINER (seal)  
2. 3G-2715 [4] SEAL  
3. 2H-3931 [1] SEAL  
4. 3G-2716 [1] RING  
5. 4J-9222 [1] RING  
6. 4F-7952 [1] SEAL  
 

#UEG0051S0481
 

7J-0853: HYDRAULIC PUMP ASSEMBLY

7J853 HYDRAULIC PUMP ASSEMBLY
Part of 5D9580 Hydraulic Pump and Lines Group shown on Page 178
c123820 UEG0051S
7J0853 HYDRAULIC PUMP ASSEMBLY Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  J [2] PIN  
  J [2] SCREW  
  O [2] PIN  
  O [2] SCREW  
  O [1] ROTOR  
  2J-8163 H [1] SEAL  
  4J-9220 H [1] RING  
  2H-3928 H [1] SEAL  
  4J-7781 [1] COVER  
  1H-5728 H [1] SEAL  
  4J-9225 H [1] RING  
  4J-9287 L [1] KIT (Seal)  
    (Consists of Parts Marked H)
  7J-0575 [1] CARTRIDGE ASSEM.  
    (38 gallons per minute)
    (Consists of parts marked O)
  5J-9852 R [1] CARTRIDGE ASSEM.  
    (42 gallons per minute)
    (Consists of parts marked J)
  O [1] PLATE  
  4J-7945 [4] BOLT  
  O [1] RING  
  O [10] VANE  
  O [10] INSERT  
  O [1] PLATE  
  [1] BEARING  
    (Part of Plate Assem.)
  J [1] PLATE ASSEM.  
  4J-7779 [1] COVER  
  J [1] ROTOR  
  2J-7760 [1] BODY  
  4J-9221 H [1] RING  
  5F-3106 H [1] SEAL  
  6H-3977 H [1] SEAL  
  1S-0668 H [1] RING  
  3J-7719 [1] RING  
  3L-1425 [1] BEARING  
  2J-7764 H [1] SEAL  
  2J-7759 H [1] WIPER  
  4J-7780 [1] SHAFT  
  2J-7763 [1] WASHER  
  1J-6474 [1] RING  
  J [1] PLATE  
  2H-3935 H [1] SEAL  
  J [10] VANE  
  J [10] INSERT  
  J [1] RING  
  L   NOT PART OF 7J853 HYDRAULIC PU
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0051S0482
 

9J-5131: VANE PUMP GROUP

9J5131 VANE PUMP GROUP--Type 1
Provides Field Replacement for 7J853 Hydraulic Pump Assembly shown on Page 180
c156353 UEG0051S
9J5131 VANE PUMP GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  J [2] PIN  
  J [2] SCREW  
  L [2] PIN  
  L [2] SCREW  
  L [1] ROTOR  
  2J-8163 H [1] SEAL  
  4J-9220 H [1] RING  
  2H-3928 H [1] SEAL  
  4J-7781 [1] COVER  
  1H-5728 H [1] SEAL  
  4J-9225 H [1] RING  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  9J-5108 [1] KIT (Seal)  
    (Consists of Parts Marked H)
  7J-0575 [1] CARTRIDGE ASSEM.  
    (38 gallons per minute)
    (Consists of parts Marked L)
  5J-9852 R [1] CARTRIDGE ASSEM.  
    (42 gallons per minute)
    (Consists of parts marked J)
  L [1] PLATE  
  4J-7945 [4] BOLT  
  L [1] RING  
  L [10] VANE  
  L [10] INSERT  
  L [1] PLATE  
  [1] BEARING  
    (Part of Plate Assem.)
  J [1] PLATE ASSEM.  
  8J-1578 [1] COVER ASSEM.  
    (Includes)
  7J-4076 [8] DAMPER  
  J [1] ROTOR  
  9J-5120 [1] BODY  
  4J-9221 H [1] RING  
  5F-3106 H [1] SEAL  
  6H-3977 H [1] SEAL  
  1S-0668 H [1] RING  
  3J-7719 [1] RING  
  3L-1425 [1] BEARING  
  2J-7764 H [1] SEAL  
  9J-5088 [1] SHAFT  
  9J-5151 H [1] SEAL  
  4H-0407 H [1] PLUG  
  2J-7763 [1] WASHER  
  1J-6474 [1] RING  
  J [1] PLATE  
  2H-3935 H [1] SEAL  
  J [10] VANE  
  J [10] INSERT  
  J [1] RING  
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0051S0483
 

9J-5131: VANE PUMP GROUP

9J5131 VANE PUMP GROUP--Type 2
Provides Field Replacement for 7J853 Hydraulic Pump Assembly shown on Page 180
3G2836 and 3G2236 Cartridge parts are shown on Page 126A-4 and 180C
c165297 UEG0051S
9J5131 VANE PUMP GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3G-2836 YC [1] CARTRIDGE ASSEM. (38 gpm)  
2. 3G-2236 RYC [1] CARTRIDGE ASSEM. (42 gpm)  
    (Separate Illustration)
3. 3J-7719 [1] RING  
4. 3L-1425 [1] BEARING  
5. 2J-7763 [1] WASHER  
6. 2J-7764 [1] SEAL  
7. 9J-5151 [1] SEAL  
8. 1J-6474 [1] RING  
9. 9J-5088 [1] SHAFT  
10. 3G-2632 C [1] PLUG  
11. 9J-5120 [1] BODY  
12. 8J-1578 [1] COVER ASSEM.  
    (Includes)
  7J-4076 [8] DAMPER  
13. 4J-7781 [1] COVER  
14. 4J-7945 [4] BOLT  
  R   REMFG PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
  C   INDICATES CHANGE
 

#UEG0051S0484
 

3G-2236: CARTRIDGE GP

3G2236 CARTRIDGE GROUP
Part of 9J5131 Vane Pump Group shown on Page 180B
c213369 UEG0051S
3G2236 CARTRIDGE GP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3G-2241 [4] RETAINER (seal)  
2. 3G-2240 [4] SEAL  
3. 2H-3935 [1] SEAL  
4. 3G-2242 [1] RING  
5. 1S-0668 [1] RING  
6. 6H-3977 [1] SEAL  
 

#UEG0051S0485
 

9J-8178: VANE PUMP GROUP

9J8178 VANE PUMP GROUP
Provides Field Replacement for 7J589 Hydraulic Pump Assembly shown on Page 181
3G2201 Cartridge parts are shown on Page 180D
c165298 UEG0051S
9J8178 VANE PUMP GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3G-2201 Y [1] CARTRIDGE GROUP (21 GPM)  
    (Separate Illustration)
2. 4M-7652 [1] RING  
3. 6B-1124 [1] BEARING  
4. 4M-7648 [1] WASHER  
5. 9J-5096 [1] SHAFT  
6. 9J-5150 [1] SEAL  
7. 4J-0980 [1] SEAL  
8. 3G-2632 [1] PLUG  
9. 1L-8497 [1] RING  
10. 9J-5126 [1] BODY  
11. 4J-0975 [1] COVER  
12. 1D-4569 [4] BOLT  
  Y   SEPARATE ILLUSTRATION
 

#UEG0051S0486
 

3G-2201: CARTRIDGE GROUP

3G2201 CARTRIDGE GROUP--21 GPM
Part of 9J5134 and 9J8178 Vane Pump Groups shown on Pages 179F and 180D
c211558 UEG0051S
3G2201 CARTRIDGE GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3G-2192 [4] RETAINER (seal)  
2. 3G-2191 [4] SEAL  
3. 2H-3934 [1] SEAL  
4. 3G-2193 [1] RING  
5. 1S-0670 [1] RING  
6. 1H-9696 [1] SEAL  
 

#UEG0051S0487
 

7J-0589: HYDRAULIC PUMP ASSEMBLY

7J589 HYDRAULIC PUMP ASSEMBLY
Part of 5D9580 Hydraulic Pump and Lines Group shown on Page 178
For Field Replacement order 9J8178 shown on Page 180D
c123821 UEG0051S
7J0589 HYDRAULIC PUMP ASSEMBLY Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  J [1] RING  
  J [10] VANE  
  J [10] INSERT  
  4J-0975 [1] COVER  
  J [1] PLATE ASSEM.  
  [1] BEARING  
    (PART OF PLATE ASSEM.)
  J [2] PIN  
  J [1] ROTOR  
  J [2] SCREW  
  1D-4569 [4] BOLT  
  2H-3934 H [1] SEAL  
  1S-0669 H [1] RING  
  2H-4145 H [1] SEAL  
  J [1] PLATE  
  1H-9696 H [1] SEAL  
  1S-0670 H [1] RING  
  1L-8497 [1] RING  
  4M-7648 [1] WASHER  
  4J-0980 H [1] SEAL  
  4J-0981 H [1] WASHER  
  4J-5150 [1] SHAFT  
  4J-9281 J [1] KIT (SEAL)  
    (CONSISTS OF PARTS MARKED H)
  7J-0561 R [1] CARTRIDGE ASSEM.  
    (CONSISTS OF PARTS MARKED J)
  6B-1124 [1] BEARING  
  4M-7652 [1] RING  
  4J-4834 [1] BODY  
  J   NOT PART OF 7J589 HYDRAULIC PU
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0051S0488
 

3J-9687: HYDRAULIC SWIVEL JOINT GROUP

3J9687 HYDRAULIC SWIVEL JOINT GROUP
Part of 5J9700 Lines Group shown on Page 182 & 182A
c70899 UEG0051S
3J9687 HYDRAULIC SWIVEL JOINT GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  4F-5192 [4] BOLT  
  4B-1040 [4] WASHER  
  4J-3942 [4] SEAL  
  3H-3667 [4] FLANGE  
  3H-5368 [8] BOLT  
  3B-4507 [8] LOCKWASHER  
  1D-4556 [4] BOLT  
  4B-1040 [4] WASHER  
  4J-3942 [4] SEAL  
  4F-7952 [2] SEAL  
  3J-9539 [1] ROTOR  
  1M-8746 R [2] SEAL GROUP  
  8H-2265 [2] RING  
  [2] SEAL  
  1H-8128 [3] SEAL  
    (3.749" DIAMETER)
  3J-9541 [3] SEAL  
    (3.500" DIAMETER)
  3J-9686 [1] BODY  
  3J-9538 [2] MANIFOLD  
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0051S0489
 

5J-9700: LINES GROUP

5J9700 LINES GROUP--Type 1
Part of 6D140 Hydraulic Arrangement listed on Page 177
3J9687 Swivel Joint Group parts are shown on Page 181
c105189 UEG0051S
5J9700 LINES GROUP Parts scheme
  For full view, you need register

Parts for your 621 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5J-9906 [1] TUBE (21.17" long)  
2. 8M-2773 [2] CLIP  
3. 3J-9687 Y [1] JOINT GROUP  
    (See Separate Illustration)
4. 6B-9798 [4] FITTING  
  1F-1344 [4] NUT  
    (1 in each 6B9798 Fitting)
5. 0S-1588 [16] BOLT  
6. 3B-4506 [34] LOCKWASHER  
7. 5J-5605 [1] TUBE ASSEM. (43.77" long overall)  
    (To Ejector Lines)
8. 5J-5603 [1] TUBE ASSEM. (45.19" long overall)  
    (To Bowl Lines)
9. 5J-2588 [1] PLATE ASSEM.  
10. 1H-3305 [12] FLANGE  
11. 6J-3600 C [9] SEAL  
12. 0S-1590 [12] BOLT  
13. 0S-1594 [4] BOLT  
14. 5J-5604 [1] TUBE ASSEM. (37.15" long overall)  
    (To Common Rail Lines)
15. 5J-0759 [2] BOSS  
  5S-8912 C [2] HOSE ASSEM. (90" long overall)  
16. 3S-9404 [1] STEM ASSEM.  
17. 3S-9351 [2] SLEEVE  
18. 5S-8938 [1] HOSE  
19. 3S-9398 [1] STEM ASSEM.  
20. 6J-3625 C [4] SEAL  
21. 4J-7275 [2] CLAMP  
22. 1A-5822 [2] BOLT  
  3B-4508 [2] LOCKWASHER  
  5S-9372 C [3] HOSE ASSEM. (33" long overall)  
23. [1] HOSE  
  5S-5969 [1] STEM ASSEM.  
24. 3S-7252 [2] SLEEVE  
25. 3S-7251 [1] STEM ASSEM.  
26. 4J-7002 [3] STRAP  
  5S-8816 C [1] HOSE ASSEM. (144" long overall)  
27. [1] HOSE  
28. 3S-8975 [1] STEM ASSEM.  
29. 3S-8606 [2] SLEEVE  
30. 3S-8974 [1] STEM ASSEM.  
31. 5F-7054 [2] SEAL  
32. 4D-5774 [1] CLIP  
33. 5J-9907 [1] TUBE (21.17" long)  
34. 0S-0509 [2] BOLT  
  1D-4717 [2] NUT  
  C   INDICATES CHANGE FROM PREVIOUS
  Y   SEPARATE ILLUSTRATION
 

Information:

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}
Nexus Gear Pump Porting{5073}
Nexus Gear Pump Porting{5073}
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}
Vane Type Hydraulic Pump Identification Guidelines {5055}
Vane Type Hydraulic Pump Identification Guidelines {5055}
Specifications
Hydraulic Pump
621 SCRAPER HYDRAULIC SYSTEM
Hydraulic Pump (627 Push Pull)<BR> (8J437)
621, 623 & 627 WHEEL TRACTOR-SCRAPERS STEERING SYSTEM (HYDRA
Hydraulic Pump (621 - 623 - 627)<BR> (8J279)
621, 623 & 627 WHEEL TRACTOR-SCRAPERS STEERING SYSTEM (HYDRA
Hydraulic Pump<BR> (5J8334 &amp; 7J589)
J621 ELEVATING SCRAPER HYDRAULIC SYSTEM
Hydraulic Pump<BR> (7J853 &amp; 5J8333)
J621 ELEVATING SCRAPER HYDRAULIC SYSTEM
Hydraulic Pump<BR> (7J616)
J621 ELEVATING SCRAPER HYDRAULIC SYSTEM
8J437 Hydraulic Pump<BR> (627 Only)
621, 623 & 627 TRACTORS CUSHION-HITCH
8J279 Hydraulic Pump
621, 623 & 627 TRACTORS CUSHION-HITCH
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}
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}
Reuse And Salvage Guidelines
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}
Vane Type Hydraulic Pumps {5055}
Vane Type Hydraulic Pumps {5055}
Repair Process for Hydraulic Gear Pumps {5073}
Repair Process for Hydraulic Gear Pumps {5073}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 9, 10, and 11) {5061, 506G, 5073}
Specifications and Reusability for Hydraulic Gear Pumps and Motors (Groups 9, 10, and 11) {5061, 506G, 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 1, 2, and 3) {5061, 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}
Vane Type Hydraulic Pump Identification Guidelines {5055}
Vane Type Hydraulic Pump Identification Guidelines {5055}
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}
Bench Test Procedures
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}
Bench Test Procedure for Gear Pumps {5073}
Bench Test Procedure for Gear Pumps {5073}
Bench Test Procedure for Vane Pumps {5055}
Bench Test Procedure for Vane Pumps {5055}
Disassembly and Assembly
Hydraulic Pump
621 TRACTOR-SCRAPER VEHICLE SYSTEMS
Cushion Hitch Hydraulic Pump
621 TRACTOR-SCRAPER VEHICLE SYSTEMS
Hydraulic Pump
J621 ELEVATING SCRAPER VEHICLE SYSTEMS
Cushion Hitch Hydraulic Pump
621 & 623 TRACTOR-SCRAPER POWER TRAIN
Service Magazine
Improved Analysis of Non-Warrantable Failures for Reman Vane Cartridges {5055}
2004/07/05
Cover Plate, Flange are Available for Use During Flow Tests on the Main Hydraulic Pumps {0738, 5070, 5084}
2005/04/25

Caterpillar Parts SIS Catalog 621 :

VANE PUMP GROUP
9J-5134 VANE PUMP GROUP
VANE PUMP GROUP
9J-5134 VANE PUMP GROUP
HYDRAULIC PUMP ASSEMBLY
7J-0616 HYDRAULIC PUMP ASSEMBLY
HYDRAULIC OIL LINES GROUP
8J-8798 HYDRAULIC OIL LINES GROUP
HYDRAULIC PUMP AND LINES GROUP
6D-9630 HYDRAULIC PUMP AND LINES GROUP
HYDRAULIC PUMP AND LINES GROUP
7D-5300 HYDRAULIC PUMP AND LINES GROUP
HYDRAULIC PUMP AND LINES GROUP
7D-5300 HYDRAULIC PUMP AND LINES GROUP
HYDRAULIC PUMP AND LINES GROUP
7D-5300 HYDRAULIC PUMP AND LINES GROUP
HYDRAULIC PUMP ASSEMBLY
7J-0853 HYDRAULIC PUMP ASSEMBLY
VANE PUMP GROUP
9J-5131 VANE PUMP GROUP
VANE PUMP GROUP
9J-5131 VANE PUMP GROUP
CARTRIDGE GP
3G-2236 CARTRIDGE GP
VANE PUMP GROUP
9J-8178 VANE PUMP GROUP
CARTRIDGE GROUP
3G-2201 CARTRIDGE GROUP
HYDRAULIC PUMP ASSEMBLY
7J-0589 HYDRAULIC PUMP ASSEMBLY
HYDRAULIC SWIVEL JOINT GROUP
3J-9687 HYDRAULIC SWIVEL JOINT GROUP

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