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3G9801 METERING PUMP GROUP Part of 2Y2160 Hydrostatic Steering and 2Y2911 Field Conversion Air from Hydraulic Steering to Hydraulic Steering shown on Pages 143B and 147B 120B


HYDRAULIC SYSTEM
PUMP GP-METERING
CYLINDER GP
TANK GP
PUMP GP

MOTOR GRADER 120B MOTOR GRADER 64U
 120B MOTOR GRADER 64U02061-UP (MACHINE) POWERED BY 3306 ENGINE ZEBP0544 120B 64U   (1972)

HYDRAULIC SYSTEM

PUMP GP-METERING
PUMP GP-METERING
3G-9801 PUMP GP-METERING
 

#ZEBP05440250
 

3G-9801: PUMP GP-METERING

3G9801 METERING PUMP GROUP
Part of 2Y2160 Hydrostatic Steering and 2Y2911 Field Conversion Air from
Hydraulic Steering to Hydraulic Steering shown on Pages 143B and 147B
c224867 ZEBP0544
3G9801 PUMP GP-METERING Parts scheme
  For full view, you need register

Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 068-6750 [1] COMMUTATOR ASSEM.  
2. 068-6749 [1] MANIFOLD  
3. 2Y-2705 [1] ROTOR  
4. 068-6747 [1] SPACER  
5. 1T-0416 [4] BOLT  
6. 068-7652 [1] BEARING  
7. 068-6733 [1] BEARING  
8. 068-6732 [1] WASHER  
9. 068-6728 [1] RING  
10. 6L-6035 [1] ROLLER  
11. 069-4257 [1] COVER  
12. 2D-6398 [1] RING  
13. 035-8038 [1] SHAFT  
14. 000-6321 [1] NUT  
15. 035-4297 [1] BAR  
16. 068-6729 [4] SHIM .25 mm(.010 in.) thick  
  068-6730 [4] SHIM .13 mm(.005 in.) thick  
  068-6731 [1] SHIM .064 mm(.003 in.) thick  
  068-7651 [1] SHIM .76 mm(.030 in.) thick  
17. 035-4296 [1] SPRING  
18. 068-6735 [1] SPACER  
19. 4B-9880 [1] BALL  
20. 068-6734 [1] SPRING  
21. 068-6739 [1] SEAL  
22. 068-6737 [1] PLUG ASSEM.  
    (Includes)
  3G-1209 [1] SEAL  
  8F-9538 [1] RING  
23. 068-6726 [1] RING  
24. 068-6755 [1] PLUG ASSEM.  
    (Includes)
  4J-5477 [1] RING  
  2D-6642 [1] BALL  
25. 2Y-2733 [1] SPACER  
26. 2Y-2734 [1] LINK  
27. 2Y-3737 [1] SEAL  
28. 2Y-2955 [1] RETAINER  
29. 1F-4111 [7] BOLT  
30. 068-6754 [1] COVER ASSEM.  
31. 068-6753 [1] WASHER  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  037-9562 [1] KIT (seal-hydraguide)  
 

#ZEBP05440251
 

4J-4115: CYLINDER GP-STEER

4J4115 STEERING CYLINDER GROUP--100 mm (4 in.) Bore x 150 mm (6 in.) Stroke
Part of 2Y2160 Hydrostatic Steering shown on Pages 139, 141, 143 & 143B
c180205 ZEBP0544
4J4115 CYLINDER GP-STEER Parts scheme
  For full view, you need register

Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  5J-7131 [1] PISTON  
  5J-7154 [1] RING  
  5J-4561 [1] NUT  
  5J-5402 [1] SEAL ASSEM.  
  5J-5401 C [1] RING  
  5J-5400 [1] SEAL  
  4J-4116 [1] CYLINDER ASSEM.  
  3D-6222 [2] BEARING  
  7J-7132 [1] HEAD ASSEM.  
  7J-4718 [1] HEAD  
    (Part of 7J7132 Assem.)
  3D-6220 [1] ROD ASSEM.  
  4J-4082 [2] BEARING  
    (Part of 3D6220 Assem.)
  3B-8489 [1] FITTING  
  4B-4550 [1] FITTING  
  4J-8979 [1] SEAL  
  5J-8150 [1] SEAL  
  6J-9733 [1] SEAL  
  0S-1625 [4] BOLT  
  3B-4510 [4] LOCKWASHER  
  1H-8128 [1] SEAL  
  2K-6830 [1] RING  
  C   INDICATES CHANGE
 

#ZEBP05440252
 

1G-0643: TANK AND PUMP GROUP

1G643 TANK AND PUMP GROUP
Part of 2Y2160 Hydrostatic Steering shwon on Page 138. 4D4661 Hydraulic Pump, 1G642 Steering Tank
and 2Y2175 Valve parts are shown on Pages 157, 159 and 158. Serial No. 64U2061 to 64U2167
sp288 ZEBP0544
1G0643 TANK AND PUMP GROUP Parts scheme
  For full view, you need register

Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1G-0642 Y [1] TANK GROUP  
    (Separate Illustration)
2. 2Y-1315 [1] HOSE ASSEM.  
    - OR -
  8M-2716 [2] STEM  
  8M-1631 [4] CLAMP  
  0S-1571 [4] BOLT  
  1D-4717 [4] NUT  
  9S-0247 HOSE 23 cm  
3. 5F-1678 [1] SEAL  
4. 2Y-1350 [4] FLANGE  
5. 0S-1588 [8] BOLT  
6. 3B-4506 [14] LOCKWASHER  
7. 8S-9191 [4] BOLT  
8. 5F-1678 [1] SEAL (Between Valve and Pump)  
9. 2Y-2175 YC [1] VALVE GROUP  
    (Separate Illustration)
10. 0L-2070 [2] BOLT  
11. 1D-4717 [2] NUT  
12. 4F-7391 [1] SEAL  
13. 2Y-1349 [2] FLANGE  
14. 4D-4661 Y [1] PUMP ASSEM.  
    (Separate Illustration)
15. 2H-3931 [1] SEAL (Between Support and Pump)  
16. 2Y-1314 [1] HOSE ASSEM.  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#ZEBP05440253
 

1G-0643: TANK AND PUMP GROUP

1G643 TANK AND PUMP GROUP
Part 2Y2160 Hydrostatic Steering shown on Page 138. 2Y2956 Hydraulic Pump, 1G642 Steering Tank
and 2Y2175 Valve parts are shown on Pages 157, 159 and 158. Serial No. 64U2168 to 64U2843
sp289 ZEBP0544
1G0643 TANK AND PUMP GROUP Parts scheme
  For full view, you need register

Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1G-0642 Y [1] TANK GROUP  
    (Separate Illustration)
2. 2Y-1315 [1] HOSE ASSEM.  
    - OR -
  8M-2716 [2] STEM  
  8M-1631 [4] CLAMP  
  0S-1571 [4] BOLT  
  1D-4717 [4] NUT  
  9S-0247 HOSE 23 cm  
3. 5F-1678 [1] SEAL  
4. 2Y-1350 [4] FLANGE  
5. 0S-1588 [8] BOLT  
6. 3B-4506 [14] LOCKWASHER  
7. 8S-9191 [4] BOLT  
8. 5F-1678 [1] SEAL (Between Valve and Pump)  
9. 2Y-2175 Y [1] VALVE GROUP  
    (Separate Illustration)
10. 0L-2070 [2] BOLT  
11. 1D-4717 [2] NUT  
12. 4F-7391 [1] SEAL  
13. 2Y-1349 [2] FLANGE  
14. 2Y-2956 YC [1] PUMP ASSEM.  
    (Separate Illustration)
15. 2H-3931 [1] SEAL (Between Support and Pump)  
16. 2Y-1314 [1] HOSE ASSEM.  
  C   INDICATE CHANGE
  Y   SEPARATE ILLUSTRATION
 

#ZEBP05440254
 

1G-0643: TANK AND PUMP GROUP

1G643 TANK AND PUMP GROUP
Part of 2Y2160 Hydrostatic Steering shown on Page 140. 2Y2956 Hydraulic Pump, 1G642 Steering
Tank and 2Y2175 Valve parts are shown on Pages 157, 159 and 158. Serial No. 64U2844 to 64U2968
sp868 ZEBP0544
1G0643 TANK AND PUMP GROUP Parts scheme
  For full view, you need register

Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1G-0642 Y [1] TANK GROUP  
    (Separate Illustration)
2. 2Y-1315 [1] HOSE ASSEM.  
    - OR -
  8M-2716 [2] STEM  
  8M-1631 [4] CLAMP  
  0S-1571 [4] BOLT  
  1D-4717 [4] NUT  
  9S-0247 HOSE 23 cm  
3. 5F-1678 [1] SEAL  
4. 1P-4576 C [4] FLANGE  
5. 0S-1588 [8] BOLT  
6. 3B-4506 C [2] LOCKWASHER  
7. 8S-9191 [4] BOLT  
8. 5F-1678 [1] SEAL (Between Valve and Pump)  
9. 2Y-2175 Y [1] VALVE GROUP  
    (Separate Illustration)
10. 0L-2070 [2] BOLT  
11. 1D-4717 [2] NUT  
12. 4F-7391 [1] SEAL  
13. 1P-4577 C [2] FLANGE  
14. 2Y-2956 Y [2] PUMP ASSEM.  
    (Separate Illustration)
15. 2H-3931 [1] SEAL (Between Support and Pump)  
16. 2Y-1314 [1] HOSE ASSEM.  
17. 4B-4278 [12] WASHER  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#ZEBP05440255
 

1G-0643: TANK AND PUMP GROUP

1G643 TANK AND PUMP GROUP
Part of 2Y2160 Hydrostatic Steering shown on Pages 140, 142 & 143A. 2Y3734 Hydraulic Pump, 1G642 Steering Tank
and 2Y2175 Valve parts are shown on Pages 158 and 159. Serial No. 64U2969 to 64U6428 inclusive
sp869 ZEBP0544
1G0643 TANK AND PUMP GROUP Parts scheme
  For full view, you need register

Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1G-0642 Y [1] TANK GROUP  
    (Separate Illustration)
2. 2Y-1315 [1] HOSE ASSEM.  
    - OR -
  8M-2716 [2] STEM  
  8M-1631 [4] CLAMP  
  0S-1571 [4] BOLT  
  1D-4717 [4] NUT  
  9S-0247 HOSE 23 cm  
3. 5F-1678 [1] SEAL  
4. 2Y-1350 [4] FLANGE  
5. 0S-1588 [8] BOLT  
6. 3B-4506 [14] LOCKWASHER  
7. 8S-9191 [4] BOLT  
8. 5F-1678 [1] SEAL (Between Valve and Pump)  
9. 2Y-2175 Y [1] VALVE GROUP  
    (Separate Illustration)
10. 0L-2070 [2] BOLT  
11. 1D-4717 [2] NUT  
12. 4F-7391 [1] SEAL  
13. 2Y-1349 [2] FLANGE  
14. 2Y-3734 YC [1] PUMP ASSEM.  
    (Separate Illustration)
15. 2H-3931 [1] SEAL (Between Support and Pump)  
16. 2Y-1314 [1] HOSE ASSEM.  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#ZEBP05440256
 

1G-0643: TANK AND PUMP GROUP

1G643 TANK AND PUMP GROUP
Part of 2Y2160 Hydrostatic Steering shown on Page 143A. 2Y3734 Hydraulic Pump,
1G642 Steering Tank and 2Y2175 Valve parts are shown on Pages 158 & 159
Serial No. 64U6429-Up
c179421 ZEBP0544
1G0643 TANK AND PUMP GROUP Parts scheme
  For full view, you need register

Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1G-0642 Y [1] TANK GROUP  
    (Separate Illustration)
2. 2Y-1315 [1] HOSE ASSEM. (not serviced)  
    For Service Furnish:
  8M-2716 [2] STEM  
  8M-1631 [4] CLAMP  
  0S-1571 [4] BOLT  
  1D-4717 [4] NUT  
  9S-0247 H HOSE 9.06in. (23 cm)  
3. 2K-0190 C [4] FLANGE  
4. 5F-1678 [1] SEAL  
5. 0S-1588 [8] BOLT  
6. 3B-4506 C [2] LOCKWASHER  
7. 8S-9191 [4] BOLT  
8. 5F-1678 [1] SEAL  
    (Between Valve & Pump)
9. 2Y-2175 Y [1] VALVE GROUP  
    (Separate Illustration)
10. 0L-2070 [2] BOLT  
11. 1D-4717 [2] NUT  
12. 4F-7391 [1] SEAL  
13. 2Y-1349 [2] FLANGE  
14. 2Y-3734 Y [1] PUMP ASSEM.  
    (Separate Illustration)
15. 2H-3931 [1] SEAL  
    (Between Support and Pump)
16. 2Y-1314 [1] HOSE ASSEM. 43.48cm (17.12in.)  
17. 5M-2894 C [12] WASHER  
  H   ORDER BY THE INCH
  Y   SEPARATE ILLUSTRATION
  C   INDICATES CHANGE
 

#ZEBP05440257
 

4D-4661: HYDRAULIC PUMP ASSEMBLY

4D4661 HYDRAULIC PUMP ASSEMBLY
Part of 1G643 Tank and Pump group shown on Page 153
Serial No. 64U2061 to 64U2167
c109510 ZEBP0544
4D4661 HYDRAULIC PUMP ASSEMBLY Parts scheme
  For full view, you need register

Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  3D-2353 [1] PLATE  
  2D-0628 [1] RING  
  2H-3931 [2] SEAL  
  2D-0602 [1] COVER  
  1A-5822 [4] BOLT  
  7F-9987 [1] SPRING  
  2D-0601 [1] ROTOR  
  7F-9985 [2] PIN  
  4H-4388 [1] KIT  
    (CONSISTS OF 12 VANES)
  4D-1507 [1] BODY  
  2J-6356 [1] RING  
  4D-1508 [1] RETAINER  
  4M-7668 [1] SEAL  
  2D-0592 [1] RING  
  4D-1509 [1] SHAFT  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  5J-7604 [1] KIT (CARTRIDGE)  
  1H-9696 [1] SEAL  
  1B-4106 [1] BEARING  
  6B-0924 [1] BEARING  
 

#ZEBP05440258
 

2Y-2956: HYDRAULIC PUMP ASSEMBLY

2Y2956 HYDRAULIC PUMP ASSEMBLY
Part of 1G643 Tank and Pump Group shown on Pages 154 & 155
Serial No. 64U2168 to 64U2968
sp290 ZEBP0544
2Y2956 HYDRAULIC PUMP ASSEMBLY Parts scheme
  For full view, you need register

Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  3D-2353 [1] PLATE  
  [1] RING  
  2H-3931 [2] SEAL  
  2D-0602 [1] COVER  
  0L-1329 [4] BOLT  
  7F-9987 [1] SPRING  
  [1] ROTOR  
  [2] PIN  
  [1] KIT  
    (Consists of 12 Vanes)
  4D-1507 [1] BODY  
  2J-6356 [1] RING  
  4D-1508 [1] RETAINER  
  4M-7668 [1] SEAL  
  2D-0592 [1] RING  
  4D-1509 [1] SHAFT  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  5J-7604 [1] KIT (Cartridge)  
  1H-9696 [1] SEAL  
  1B-4106 [1] BEARING  
  6B-0924 [1] BEARING  
 

#ZEBP05440259
 

2Y-3734: PUMP GP-VANE

2Y3734 HYDRAULIC PUMP ASSEMBLY
Part of 1G643 Tank and Pump shown on Pages 156 & 156A
Serial No. 64U2969-Up
sp927 ZEBP0544
2Y3734 PUMP GP-VANE Parts scheme
  For full view, you need register

Parts for your 120B MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  3D-2353 [1] PLATE  
  2Y-3733 [1] RING  
  2H-3931 [2] SEAL  
  2D-0602 [1] COVER  
  1A-5822 [4] BOLT  
  7F-9987 [1] SPRING  
  2D-0601 [1] ROTOR  
  7F-9985 [2] PIN  
  4H-4388 [1] KIT  
    (Consists of 12 Vanes)
  4D-1507 [1] BODY  
  2J-6356 [1] RING  
  4D-1508 [1] RETAINER  
  4M-7668 [1] SEAL  
  2D-0592 [1] RING  
  4D-1509 [1] SHAFT  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  2Y-3735 [1] KIT (Cartridge)  
  1H-9696 [1] SEAL  
  1B-4106 [1] BEARING  
  6B-0924 [1] BEARING  
 

Information:

Service Magazine
New Metering Pump Groups For Steering Control Prevent Oil Leaks {4300, 4301, 4312}
2010/08/19

Caterpillar Parts SIS Catalog 120B :

STEERING GEAR GROUP
9D-3860 STEERING GEAR GROUP
SHAFT GP-CONTROL
4B-8580 SHAFT GP-CONTROL
SHAFT GP-CONTROL
4B-8580 SHAFT GP-CONTROL
SHAFT GP-LEANING WHEEL CONTROL
2D-4125 SHAFT GP-LEANING WHEEL CONTROL
SHAFT GP-LEANING WHEEL CONTROL
2D-4125 SHAFT GP-LEANING WHEEL CONTROL
JOINT AS
2Y-5396 JOINT AS
JOINT AS
2Y-5394 JOINT AS
JOINT AS
2Y-1523 JOINT AS
CYLINDER GP-STEER
4J-4115 CYLINDER GP-STEER
TANK AND PUMP GROUP
1G-0643 TANK AND PUMP GROUP
TANK AND PUMP GROUP
1G-0643 TANK AND PUMP GROUP
TANK AND PUMP GROUP
1G-0643 TANK AND PUMP GROUP
TANK AND PUMP GROUP
1G-0643 TANK AND PUMP GROUP
TANK AND PUMP GROUP
1G-0643 TANK AND PUMP GROUP
HYDRAULIC PUMP ASSEMBLY
4D-4661 HYDRAULIC PUMP ASSEMBLY
HYDRAULIC PUMP ASSEMBLY
2Y-2956 HYDRAULIC PUMP ASSEMBLY

Truck sale:

CATERPILLAR 120B 1978
$17,572 USD 
CATERPILLAR 120B 1978
- MOTOR GRADERS
PESA
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The names Cat, Caterpillar, John Deere, Komatsu, Volvo, Hitachi, Doosan, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
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