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4D7890 HYDRAULIC CYLINDER GROUP--5.25" Bore x 47" Stroke Part of 7D7205, 7D7215, 6D5990, 7D1500, 7D7245, 7D7250, 7D7255, & 7D7260 Power Blade Arrangements listed on Pages 214 through 217 12F




HYDRAULIC SYSTEM

CYLINDER GP
 

#UEG0718S0180
 

4D-7890: HYDRAULIC CYLINDER GROUP

4D7890 HYDRAULIC CYLINDER GROUP--5.25" Bore x 47" Stroke
Part of 7D7205, 7D7215, 6D5990, 7D1500, 7D7245, 7D7250, 7D7255, & 7D7260 Power Blade Arrangements
listed on Pages 214 through 217
c138706 UEG0718S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  5H-2182 [1] CYLINDER ASSEM.  
  2D-0715 [2] RING  
  2D-0713 [1] PISTON  
  5J-5731 [1] NUT  
  2D-0714 [1] RING  
  4F-7952 [1] SEAL  
  2H-1703 [2] PACKING  
  3D-4602 [1] ROD  
  5H-6265 [1] HEAD  
  0S-1588 [6] BOLT  
  3B-4506 [6] LOCKWASHER  
  2D-5898 [1] FITTING  
  1H-4469 [1] GLAND ASSEM.  
  9S-1352 C [1] PIN  
  4D-3713 [1] ROD END  
  5H-1522 [3] SHIM  
  4J-8083 [1] RING  
  5H-1513 [1] SEAL  
  6H-1230 [2] BUSHING  
    (PART OF GLAND ASSEM.1H4469)
  1H-4486 [10] SHIM  
  1H-4492 [1] PACKING  
  0S-1587 [4] BOLT (1.75"LONG)  
  1H-2415 [2] BOLT (2.50"LONG)  
  3B-4508 [6] LOCKWASHER  
  5F-3106 [1] SEAL  
  C   INDICATES CHANGE
 

#UEG0718S0181
 

5J-1952: DAMPER CYLINDER GROUP

5J1952 DAMPER CYLINDER GROUP--3.50" Bore x 10.80" Stroke--2 Required
Part of 7D7245 & 7D7250 Power Blade & Stabilizer Arrangements listed on Page 216
c113224 UEG0718S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  5J-7013 [1] SEAL ASSEM.  
  4J-3236 [1] RING  
  3H-3993 [2] BUSHING  
    (PART OF CYLINDER ASSEM. 5J1951)
  5J-4561 [1] NUT  
  5J-1946 [1] PISTON  
  5J-1951 [1] CYLINDER ASSEM.  
  5J-1943 [1] ROD ASSEM.  
  1H-5278 [4] FLANGE  
  4B-3388 [8] BOLT  
  3B-4505 [8] LOCKWASHER  
  4J-9224 [1] RING  
  1K-7110 [1] PACKING  
  5F-6307 [6] SHIM  
  3H-3993 [2] BUSHING  
    (PART OF ROD ASSEM. 5J1943)
  3B-8489 [2] FITTING  
  0S-1588 [4] BOLT  
  3B-4506 [4] LOCKWASHER  
  5J-1944 [1] RETAINER  
  4J-8982 [1] SEAL  
  1A-1460 [4] BOLT  
  3B-4508 [4] LOCKWASHER  
  5J-1945 [1] HEAD  
  2H-3931 [1] SEAL  
 

#UEG0718S0182
 

6J-7351: DAMPER CYLINDER GROUP

6J7351 DAMPER CYLINDER GROUP--3.50" Bore x 10.80" Stroke
Part of 7D7205, 7D7215, 6D5990 & 7D1500 Power Blade & Tip Arrangements listed on Pages 214 & 215
c112713 UEG0718S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  5J-7013 [1] SEAL ASSEM.  
  4J-3236 [1] RING  
  3H-3993 [2] BUSHING  
    (PART OF CYLINDER ASSEM. 5J1951)
  5J-4561 [1] NUT  
  5J-1946 [1] PISTON  
  5J-1951 [1] CYLINDER ASSEM.  
  5J-1943 [1] ROD ASSEM.  
  1H-5278 [4] FLANGE  
  4B-3388 [8] BOLT  
  3B-4505 [8] LOCKWASHER  
  4J-9224 [1] RING  
  1K-7110 [1] PACKING  
  5F-6307 [6] SHIM  
  3H-3993 [2] BUSHING  
    (PART OF ROD ASSEM. 5J1943)
  3B-8489 [2] FITTING  
  0S-1588 [4] BOLT  
  3B-4506 [4] LOCKWASHER  
  5J-1944 [1] RETAINER  
  4J-8982 [1] SEAL  
  1A-1460 [4] BOLT  
  3B-4508 [4] LOCKWASHER  
  5J-1945 [1] HEAD  
  2H-3931 [1] SEAL  
 

#UEG0718S0183
 

4J-4115: CYLINDER GP-STEER

4J4115 STEERING CYLINDER GROUP--4" Bore x 6" Stroke
Part of Hydraulic Steering Gear shown on Page 136
c132720 UEG0718S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  [1] PISTON  
  [1] RING  
  [1] NUT  
  [1] SEAL ASSEM.  
  [1] CYLINDER ASSEM.  
  [8] BOLT  
  [8] LOCKWASHER  
  [4] FLANGE  
  [2] BEARING  
  [1] SEAL  
  [1] HEAD  
  [1] ROD  
  [2] BEARING  
  [1] SEAL  
  [1] SEAL  
  [4] BOLT  
  [4] LOCKWASHER  
  [1] RING  
  [1] SEAL  
 

#UEG0718S0184
 

4D-7215: STEERING GEAR ASSEMBLY

4D7215 STEERING GEAR ASSEMBLY
Part of Hydraulic Steering Gear shown on Page 137
4D7850 Valve parts are shown on Page 142
c102227 UEG0718S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  8H-9585 [2] BEARING  
  3K-6712 [3] WASHER  
  3K-8900 [1] BOLT  
  3K-8899 [1] WASHER  
  4D-7859 [2] SPRING  
  4D-7852 [1] HOUSING  
  3K-8895 [1] ACTUATOR  
  2B-7457 [1] PLUG  
  4D-7865 [2] WASHER  
  4D-7860 [1] LOCK  
  2H-3776 [1] NUT  
  4D-7869 [1] SEAL  
    (PART OF COVER ASSEM.6D4202)
  4D-7847 [1] SHAFT ASSEM.  
  3K-6710 [1] WASHER  
  6D-1943 [1] BOOT  
  6D-3973 [1] PLUG  
  6D-4202 [1] COVER ASSEM.  
  0T-0573 [4] BOLT  
  3K-6706 [2] GASKET  
  4D-7856 [1] GASKET  
  4D-7850 Y [1] VALVE ASSEM.  
    (SEE SEPARATE ILLUSTRATION)
  1D-4541 [4] BOLT  
  4K-9890 [4] WASHER  
  4L-9337 [6] BOLT  
  5F-0548 [14] WASHER  
  4D-7851 [1] COVER  
  3K-3475 [1] NUT  
  3K-3469 [1] WASHER  
    (PARTS OF BEARING ASSEM.6D4179)
  4D-7858 [1] PLUG  
  6D-4179 [1] BEARING ASSEM.  
  4D-7841 [1] SCREW  
    (PARTS OF SHAFT ASSEM.4D7874)
  0L-1013 [1] NUT  
  4D-7840 [1] RETAINER  
    (PART OF SHAFT ASSEM.4D7874)
  4K-7265 [1] GASKET  
  4D-7877 [2] BUSHING  
  4D-7849 [1] SEAL  
    (PARTS OF HOUSING ASSEM. 4D7876)
  4D-7874 [1] SHAFT ASSEM.  
  4D-7863 [1] COVER  
  5M-3062 [4] BOLT  
  4D-7855 [1] GASKET  
  3K-6711 [2] BEARING  
  3K-6701 [2] RING  
    (PARTS OF HOUSING ASSEM. 4D7876)
  4D-7876 [1] HOUSING ASSEM.  
  Y   SEPARATE ILLUSTRATION
 

#UEG0718S0185
 

6D-5580: HYDRAULIC STEERING GEAR

HYDRAULIC STEERING GEAR (6D5580 N/S)--Top View--Part 1 of 2
4J4115 Cylinder & 8D2568 & 8D2569 Joint parts are shown on Pages 134 & 139
c137045 UEG0718S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4D-0874 [1] EMBLEM  
  2H-9458 [1] GASKET  
2. 7B-3235 [4] BOLT  
  3B-4508 [4] LOCKWASHER  
3. 6D-3259 [1] BRACKET ASSEM.  
  1K-6648 [2] BUSHING  
4. 4D-8588 [2] WASHER  
5. 6D-9294 [1] SHAFT  
  5D-3132 [1] KEY  
6. 7D-6841 [1] JOINT ASSEM.  
  8D-2568 [1] JOINT ASSEM.  
    -OR-
  8D-2569 Y [1] JOINT ASSEM.  
    (See Separate Illustration)
7. 6D-3385 [4] SHIM (.060" Thick)  
  6D-3386 [1] SHIM (.250" Thick)  
8. 0S-0509 [1] BOLT  
9. 1A-2029 [2] BOLT  
10. 3B-4506 [5] LOCKWASHER  
11. 1B-2790 [5] BOLT (1.375" Long)  
  1B-9575 [1] BOLT (1.75" Long)  
  3B-4505 [6] LOCKWASHER  
12. 5D-8234 [1] TUBE ASSEM.  
  5F-7054 [4] SEAL  
13. 4J-4115 Y [1] CYLINDER GROUP  
    (See Separate Illustration)
14. 3D-2546 [2] BEARING ASSEM.  
  4B-9806 [1] SCREW  
15. 0S-1591 [2] BOLT  
16. 1D-4717 [4] NUT  
  4B-4278 [4] WASHER  
17. 6D-3381 [1] SHAFT  
  1B-8714 [1] KEY  
18. 9S-1354 [1] NUT  
  3B-4510 [1] LOCKWASHER  
19. 7D-5559 [1] SPACER  
  4B-3574 [1] SETSCREW  
20. 3F-1417 [1] WASHER  
21. 4D-8584 [1] WHEEL ASSEM.  
22. 5F-5442 [4] SCREW  
23. 5D-0908 [1] PLUNGER  
24. 5D-0907 [1] RETAINER  
25. 4H-1641 [1] PIN  
26. 5D-4274 [1] KNOB  
27. 2L-6726 [1] RING  
28. 1A-2333 [1] SPRING  
29. 1A-8912 [1] WASHER  
  Y   SEPARATE ILLUSTRATION
 

#UEG0718S0186
 

6D-5580: HYDRAULIC STEERING GEAR

HYDRAULIC STEERING GEAR (6D5580 N/S)--As Viewed from Right Hand Side of Machine--Part 2 of 2
4D7215 Gear, 8D1504, 8D1565, 8D2568 & 8D2569 Joint parts are shown on Pages 135, 138 & 139
c141970 UEG0718S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1B-8714 [2] KEY  
2. 9S-1354 [2] NUT  
3. 3B-4510 [6] LOCKWASHER  
4. 7D-1744 [1] SHAFT ASSEM.  
  6D-9387 [1] SHAFT  
5. 7D-1983 [1] JOINT ASSEM.  
    Includes:
  8D-1504 [1] JOINT ASSEM.  
    -OR-
  8D-1565 Y [1] JOINT ASSEM.  
    (Separate Illustration)
6. 4D-7215 Y [1] GEAR ASSEM.  
    (Separate Illustration)
7. 1A-1135 [4] BOLT  
8. 7D-6841 [1] JOINT ASSEM.  
    Includes:
  8D-2568 [1] JOINT ASSEM.  
    -OR-
  8D-2569 Y [1] JOINT ASSEM.  
    (Separate Illustration)
9. 4D-7213 [1] COUPLING  
10. 5D-8267 [1] PLATE  
11. 7D-7401 [2] NUT  
  7D-7387 [1] LOCK  
12. 3D-0403 [1] WASHER  
13. 7D-7385 [1] SHAFT  
14. 5S-8832 [1] HOSE ASSEM. (20.50" Long Overall)  
15. 3B-8489 [5] FITTING  
16. 7B-3235 [8] BOLT  
17. 3B-4508 [9] LOCKWASHER  
18. 1B-4438 [1] NUT  
  3B-4622 [1] COTTER PIN  
19. 1F-1470 [1] CAP  
20. 3D-4505 [4] BEARING  
21. 6K-0545 C [1] NUT  
22. 6D-1644 [1] SHAFT  
23. 6D-1599 [1] BLOCK  
24. 4D-7358 [1] PIN  
25. 0V-0375 [1] BOLT  
  1D-4719 [1] NUT  
26. 1A-4168 [1] NUT  
  3B-4520 [1] LOCKWASHER  
27. 3D-0409 [1] ARM  
28. 3D-0404 [1] WASHER  
29. 4B-4550 [1] FITTING  
30. 3D-0444 [2] PIN  
31. 7S-1398 [1] HOSE ASSEM. (24" Long Overall)  
32. 0L-1351 [4] BOLT  
  3B-4506 [4] LOCKWASHER  
33. 1P-4574 C [12] FLANGE  
  5F-7054 [4] SEAL  
34. 2B-2694 C [8] BOLT  
  1D-4716 [8] NUT  
35. 4B-4277 C [24] WASHER  
36. 4B-3388 C [8] BOLT  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0718S0187
 

8D-1504: JOINT ASSEMBLY

8D1504 JOINT ASSEMBLY
Part of Hydraulic Steering Gear shown on Page 137. Only separate parts
serviced. When complete Assembly is required order 7D1983
c136641 UEG0718S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8D-1506 [1] YOKE (Marked USA M)  
2. 8D-1508 [1] SPIDER & BEARING ASSEM.  
    (Marked USA 1675)
3. 8D-2835 [4] RING  
4. [1] YOKE (Marked USA H-2)  
 

#UEG0718S0188
 

8D-1565: JOINT ASSEMBLY

8D1565 JOINT ASSEMBLY
Part of Hydraulic Steering Gear shown on Page 137. Only separate parts
serviced. When complete Assembly is required order 7D1983
c136642 UEG0718S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2D-3188 [1] YOKE (Marked 10717M)  
2. 2D-2978 [1] SPIDER & BEARING ASSEM.  
    (Marked Mi5454)
3. 4D-0523 [4] RING  
4. [1] YOKE (Marked 10719M)  
 

#UEG0718S0189
 

8D-2568: JOINT ASSEMBLY

8D2568 JOINT ASSEMBLY
Part of Hydraulic Steering Gear shown on Pages 136 & 137. Only
separate parts serviced. When complete Assembly is required
order 7D6841
c136634 UEG0718S
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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8D-1506 [1] YOKE (Marked USA M)  
2. 8D-1508 [1] SPIDER & BEARING ASSEM.  
    (Marked USA 1675)
3. 8D-2835 [4] RING  
4. [1] YOKE (Marked USA H-2)  
 

Information:

Special Instruction
Instructions for Installation of Oversize Hydraulic Cylinder Seals {7555, 7562}
Instructions for Installation of Oversize Hydraulic Cylinder Seals {7555, 7562}
Installation of Vented Buffer Seal Assembly, U-Cup Seal, and Double Lip Wiper Seal for Hydraulic Cylinders{7562}
Installation of Vented Buffer Seal Assembly, U-Cup Seal, and Double Lip Wiper Seal for Hydraulic Cylinders{7562}
Installation of Double Lip Wiper Seal{7562}
Installation of Double Lip Wiper Seal{7562}
Installation of Double Lip Wiper Seal{7562}
Installation of Double Lip Wiper Seal{7562}
Hydraulic Cylinder Repair Process {7562}
Hydraulic Cylinder Repair Process {7562}
Hydraulic Cylinder Honing {7562}
Hydraulic Cylinder Honing {7562}
Procedure to Test the Position Sensor of a Hydraulic Cylinder {1439, 7562}
Procedure to Test the Position Sensor of a Hydraulic Cylinder {1439, 7562}
Technical Information Bulletin
Surface Finishes of Cylinder Bores{7562}
Surface Finishes of Cylinder Bores{7562}
Color Change for Cylinder Rod Seals (Wiper, U-Cup and Buffer){5100, 7555, 7562}
Color Change for Cylinder Rod Seals (Wiper, U-Cup and Buffer){5100, 7555, 7562}
Tool Operating Manual
Procedures for Using the 232-4686 Cylinder Washer Tank Group European Union Compliant{0374, 0599, 0680, 0738}
Procedures for Using the 232-4686 Cylinder Washer Tank Group European Union Compliant{0374, 0599, 0680, 0738}
1U-9001 and 1U-9002 Automatic Hone Tooling{0599, 0677, 0738, 7562, 7562}
1U-9001 and 1U-9002 Automatic Hone Tooling{0599, 0677, 0738, 7562, 7562}
Model HCS-40 Hydraulic Cylinder Servicer{0374, 0599, 0700, 0738, 7562}
Model HCS-40 Hydraulic Cylinder Servicer{0374, 0599, 0700, 0738, 7562}
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}
Using the 265-4177, 265-4209 Service Tool Groups to Install Sensors in Position-Sensing Hydraulic Cylinders{0599, 0709, 0738, 1439, 7562, 7562}
Using the 265-4177, 265-4209 Service Tool Groups to Install Sensors in Position-Sensing Hydraulic Cylinders{0599, 0709, 0738, 1439, 7562, 7562}
Using the 9U-7868 and 9U-7869 Spanner Wrench to Remove and install Threaded Gland Cylinder Heads{0374, 0599, 0602, 0738}
Using the 9U-7868 and 9U-7869 Spanner Wrench to Remove and install Threaded Gland Cylinder Heads{0374, 0599, 0602, 0738}
Procedures for Using the 120-9143 Cylinder Washer Tank Group {0374, 0602, 0680, 0738}
Procedures for Using the 120-9143 Cylinder Washer Tank Group {0374, 0602, 0680, 0738}
Reuse And Salvage Guidelines
Testing Hydraulic Cylinders Using the <NOBR>188-3926</NOBR> Caterpillar Cylinder Tester and the <NOBR> 9U-6803</NOBR> Caterpillar Cylinder Tester {0784, 7562}
Testing Hydraulic Cylinders Using the 188-3926 Caterpillar Cylinder Tester and the 9U-6803 Caterpillar Cylinder Tester {0784, 7562}
Reuse Guideline for Hydraulic Cylinder Position Sensor {5574, 5736}
Reuse Guideline for Hydraulic Cylinder Position Sensor {5574, 5736}
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}
Machining the O-ring Groove into the Face of Oversized Bolted Head Hydraulic Cylinders {0677, 5100, 7562}
Machining the O-ring Groove into the Face of Oversized Bolted Head Hydraulic Cylinders {0677, 5100, 7562}
HVOF Identification and Polishing (Superfinishing){0674, 0679, 1000, 7000, 7562}
HVOF Identification and Polishing (Superfinishing){0674, 0679, 1000, 7000, 7562}
Thermal Spray Procedures for Hydraulic Cylinder Rods{0679, 7562, 7562}
Thermal Spray Procedures for Hydraulic Cylinder Rods{0679, 7562, 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
Testing Hydraulic Cylinders Using the <NOBR>188-3926</NOBR> Caterpillar Cylinder Tester and the <NOBR> 9U-6803</NOBR> Caterpillar Cylinder Tester {0784, 7562}
Testing Hydraulic Cylinders Using the 188-3926 Caterpillar Cylinder Tester and the 9U-6803 Caterpillar Cylinder Tester {0784, 7562}
Service Magazine

Caterpillar Parts SIS Catalog 12F :

Truck sale:

149.800 
Caterpillar 312F, Raupenbagger, Bau-Und Bergbauausrüstung
- Crawler excavators
YANCEY BROS. CO.
13,000 
Caterpillar 12F, Construction
- motor graders
ALTORFER INC.
159,900 
Caterpillar 312F GC, Construction
- Crawler Excavators
N C MACHINERY CO.
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