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8J8412 PUMP CONTROL HEAD GROUP--Type 1 Part of 8J6855 Piston Pump Group shown on Pages 152, 153A & 153C 8J6074 and 8J8373 Valve parts are shown on Page 155 16G




HYDRAULIC SYSTEM

PUMP GP
 

#UEG0737S0500
 

8J-8412: HEAD GP-PUMP

8J8412 PUMP CONTROL HEAD GROUP--Type 1
Part of 8J6855 Piston Pump Group shown on Pages 152, 153A & 153C
8J6074 and 8J8373 Valve parts are shown on Page 155
c155122 UEG0737S
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Parts for your 16G MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8J-5472 [7] RING  
  8J-8725 [7] SEAL  
2. 8J-6074 Y [1] VALVE GROUP  
3. 8J-8373 Y [1] VALVE GROUP  
    (Separate Illustration)
4. 8J-4643 [1] HEAD  
5. 8J-2028 [1] SPACER  
6. 8J-5838 [1] SPRING (outer)  
7. 8J-5839 [1] SPRING (inner)  
8. 8J-5841 [1] SEAT  
9. 8J-5842 [1] PISTON  
10. 8J-5837 [1] SPACER  
11. 8J-5835 [5] SPACER (use as required)  
12. 9S-8002 [6] PLUG  
  3J-7354 [6] SEAL  
13. 8J-5535 [1] COVER  
  8J-8343 [1] SEAL  
14. 8J-5836 [1] GASKET  
15. 8J-5476 [1] SEAL  
16. 8J-0422 [1] CUP  
17. 2D-0598 [2] SEAL  
18. 3J-6418 [1] BOLT  
19. 3B-4506 [2] LOCKWASHER  
20. 5B-5821 [2] DOWEL  
21. 8J-8342 [1] COVER  
22. 5H-6005 [1] SEAL  
23. 1B-2790 [4] BOLT  
  3B-4505 [4] LOCKWASHER  
24. 4J-2184 [1] FITTING  
  4J-2207 [1] NUT  
  4J-2208 [1] SLEEVE  
  3J-7354 [1] SEAL  
25. 9S-8001 [1] PLUG  
  4J-7533 [1] SEAL  
26. 8J-5569 [1] TUBE  
27. 6K-8179 [1] CLIP  
28. 4J-2969 [1] FITTING  
  4J-2207 [1] NUT  
  4J-2208 [1] SLEEVE  
  3J-7354 [1] SEAL  
29. 8J-6231 [4] RETAINER  
30. 8J-8462 [4] SHIM (use as required)  
31. 7F-1866 [1] BOLT  
32. 8J-8461 [1] STEM  
33. 8J-5593 [1] PISTON  
34. 8J-8413 [1] PLUG  
  3D-2824 [1] SEAL  
35. 2A-1695 [1] SPRING  
36. 6F-4718 [1] SEAL  
  Y   SEPARATE ILLUSTRATION
 

#UEG0737S0501
 

8J-8412: HEAD GP-PUMP

PUMP CONTROL HEAD (8J8412 N/S)--Type 2
Part of 8J6855 Piston Pump Group shown on Page 152
8J8373 and 8J6074 Valve parts are shown on Page 155
c153750 UEG0737S
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Parts for your 16G MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8J-5472 [7] RING  
  8J-8725 [7] SEAL  
2. 8J-6074 [1] VALVE GROUP  
3. 8J-8373 Y [1] VALVE GROUP  
    (Separate Illustration)
4. 9J-4775 C [1] HEAD  
5. 8J-2028 [1] SPACER  
6. 8J-5838 [1] SPRING (outer)  
7. 8J-5839 [1] SPRING (inner)  
8. 8J-5841 [1] SEAT  
9. 8J-5842 [1] PISTON  
10. 8J-5837 [1] SPACER  
11. 8J-5835 [5] SPACER (use as required)  
12. 9S-8002 [6] PLUG  
  3J-7354 [6] SEAL  
13. 8J-5535 [1] COVER  
14. 8J-5836 [1] GASKET  
15. 8J-5476 [1] SEAL  
16. 8J-0422 [1] CUP  
17. 2D-0598 [2] SEAL  
18. 3J-6418 [1] BOLT  
19. 3B-4506 [2] LOCKWASHER  
20. 5B-5821 [2] DOWEL  
21. 9J-4776 C [1] COVER  
22. 5H-6005 [1] SEAL  
23. 1B-2790 [4] BOLT  
  3B-4505 [4] LOCKWASHER  
24. 8J-8343 C [2] SEAL  
25. 9S-8001 [1] PLUG  
  4J-7533 [1] SEAL  
26. 8J-8413 [1] PLUG  
  3D-2824 [1] SEAL  
27. 2A-1695 [1] SPRING  
28. 6F-4718 [1] SEAL  
29. 8J-6231 [4] RETAINER  
30. 8J-8462 [4] SHIM (use as required)  
31. 7F-1866 [1] BOLT  
32. 8J-8461 [1] STEM  
33. 8J-5593 [1] PISTON  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0737S0502
 

8J-8412: HEAD GP-PUMP

8J8412 PUMP CONTROL HEAD GROUP--Type 3
Part of 8J6855 Piston Pump Group shown on Pages 152, 153A and 153C
9J4986 and 8J8373 Valve parts are shown on Pages 154C and 155
c215998 UEG0737S
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Parts for your 16G MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8J-5472 [7] RING  
  8J-8725 [7] SEAL  
2. 9J-4986 C [1] VALVE GROUP  
3. 8J-8373 Y [1] VALVE GROUP  
    (Separate Illustration)
4. 9J-7732 C [1] HEAD  
5. 8J-2028 [1] SPACER  
6. 8J-5838 [1] SPRING (outer)  
7. 8J-5839 [1] SPRING (inner)  
8. 8J-5841 [1] SEAT  
9. 8J-5842 [1] PISTON  
10. 8J-5837 [1] SPACER  
11. 8J-5835 [5] SPACER (use as required)  
12. 9S-8002 [6] PLUG  
  3J-7354 [6] SEAL  
13. 8J-5535 [1] COVER  
14. 8J-5836 [1] GASKET  
15. 8J-5476 [1] SEAL  
16. 8J-0422 [1] CUP  
17. 2D-0598 [2] SEAL  
18. 0S-1588 C [1] BOLT  
19. 3B-4506 [2] LOCKWASHER  
20. 5B-5821 [2] DOWEL  
21. 9J-4776 [1] COVER  
22. 5H-6005 [1] SEAL  
23. 1B-2790 [4] BOLT  
  3B-4505 [4] LOCKWASHER  
24. 8J-8343 [2] SEAL  
25. 9S-8001 C [2] PLUG  
  4J-7533 C [2] SEAL  
26. 8J-8413 [1] PLUG  
  3D-2824 [1] SEAL  
27. 2A-1695 [1] SPRING  
28. 6F-4718 [1] SEAL  
29. 8J-6231 [4] RETAINER  
30. 8J-8462 [4] SHIM (use as required)  
31. 7F-1866 [1] BOLT  
32. 8J-8461 [1] STEM  
33. 8J-5593 [1] PISTON  
34. 8J-8619 C [2] SHIM (use as required)  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0737S0503
 

8J-8412: HEAD GP-PUMP

8J8412 PUMP CONTROL HEAD GROUP--Type 4
Part of 8J6855 Piston Pump shown on Pages 152, 153A and 153C
9J4986 and 3G3922 Valve parts are shown on Pages 154C & 154D
c171380 UEG0737S
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Parts for your 16G MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8J-5472 [7] RING  
  8J-8725 [7] SEAL  
2. 9J-4986 [1] VALVE GROUP  
3. 3G-3922 CY [1] VALVE GROUP  
    (Separate Illustration)
4. 9J-7732 [1] HEAD  
5. 8J-2028 [1] SPACER  
6. 8J-5838 [1] SPRING (outer)  
7. 8J-5839 [1] SPRING (inner)  
8. 8J-5841 [1] SEAT  
9. 8J-5842 [1] PISTON  
10. 8J-5835 [1] SPACER  
11. 8J-5835 B [5] SPACER  
    (use as required)
12. 9S-8002 [6] PLUG  
  3J-7354 [6] SEAL  
13. 8J-5535 [1] COVER  
14. 8J-5836 [1] GASKET  
15. 8J-5476 [1] SEAL  
16. 8J-0422 [1] CUP  
17. 2D-0598 [2] SEAL  
18. 0S-1588 [1] BOLT  
19. 3B-4506 [2] LOCKWASHER  
20. 5B-5821 [2] DOWEL  
21. 9J-4776 [1] COVER  
22. 5H-6005 [1] SEAL  
23. 1B-2790 [4] BOLT  
  3B-4505 [4] LOCKWASHER  
24. 8J-8343 [2] SEAL  
25. 9S-8001 [2] PLUG  
  4J-7533 [2] SEAL  
26. 8J-8413 [1] PLUG  
  3D-2824 [1] SEAL  
27. 2A-1695 [1] SPRING  
28. 6F-4718 [1] SEAL  
29. 8J-6231 [4] RETAINER  
30. 8J-8462 B [4] SHIM  
    (use as required)
31. 7F-1866 [1] BOLT  
32. 8J-8461 [1] STEM  
33. 8J-5593 [1] PISTON  
34. 8J-8619 B [2] SHIM  
    (use as required)
  B   USE AS REQUIRED
  Y   SEPARATE ILLUSTRATION
  C   INDICATES CHANGE
 

#UEG0737S0504
 

9J-4986: VALVE GP-PRESSURE REDUCING

9J4986 PRESSURE REDUCING VALVE GROUP
Part of 8J8412 Pump Control Head Group shown on Page 154B
c182987 UEG0737S
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Parts for your 16G MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9S-8006 [1] PLUG-O-RING  
2. 2M-9780 [1] SEAL-O-RING  
3. 9S-4982 [1] SPRING  
4. 8J-6076 [1] PISTON  
5. 8J-2030 [1] PISTON  
6. 8J-6075 [1] CARTRIDGE-REDUCING  
7. 9J-4985 [1] PISTON AS  
 

#UEG0737S0505
 

3G-3922: VALVE GP-SERVO

3G3922 SERVO VALVE GROUP
Part of 8J8412 Pump Control Head Group shown on Page 154B-1
c217076 UEG0737S
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Parts for your 16G MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9J-4999 [1] PISTON ASSEM.  
2. 8J-2032 [1] PISTON  
3. 2L-6726 [1] RING  
4. 8J-2040 [1] INSERT  
5. 3G-3917 [1] STOP  
6. 8J-8345 [1] CARTRIDGE  
7. 5B-9324 [1] SETSCREW  
8. 3G-3909 [1] SPOOL  
9. 3G-3919 [1] SLEEVE  
10. 3G-3916 [1] RING  
11. 8J-2027 [1] SPACER  
12. 3D-8317 [1] RING  
  C   INDICATES CHANGE
 

#UEG0737S0506
 

3G-3929: VALVE GP

3G3929 FOLLOWER VALVE GROUP
Provides Field Replacement for 3G3919 Sleeve and 3G3909 Spool shown
on Page 154D
c217077 UEG0737S
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Parts for your 16G MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3D-8317 [1] RING-RETAINING  
2. 8J-2027 [1] SPACER  
3. 3G-3917 [1] STOP  
4. 3G-3909 [1] SPOOL  
5. 3G-3919 [1] SLEEVE-FOLLOW UP  
6. 3G-3916 [1] RING-RETAINING  
 

#UEG0737S0507
 

8J-8373: VALVE GP-SERVO

8J8373 SERVO VALVE GROUP
Part of 8J8412 Pump Control Head Group shown on Pages 154, 154A and 154B
c210073 UEG0737S
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Parts for your 16G MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9J-4999 C [1] PISTON ASSEM.  
2. 8J-2032 [1] PISTON  
3. 2L-6726 [1] RING  
4. 8J-2040 [1] INSERT  
5. 5B-9324 [1] SETSCREW  
6. 8J-8374 [1] VALVE GROUP  
7. 8J-2034 [1] STOP  
8. 3H-1118 [1] PIN  
9. 8J-2027 [1] SPACER  
10. 3D-8317 [1] RING  
  C   INDICATES CHANGE
 

#UEG0737S0508
 

8J-6074: PRESSURE REDUCING VALVE GROUP

8J6074 PRESSURE REDUCING VALVE GROUP
Part of 8J8412 Pump Control Head Group shown on Pages 154 and 154A
c119500 UEG0737S
  For full view, you need register

Parts for your 16G MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [1] PLUG  
2. [1] SEAL  
3. [1] SPRING  
 

#UEG0737S0509
 

8D-5430: HYDRAULIC TANK

HYDRAULIC TANK (8D5430 N/S)--Part 1 of 2
Serial No. 93U1 to 93U471 inclusive
c119488 UEG0737S
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Parts for your 16G MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9S-8001 [2] PLUG  
  4J-7533 [2] SEAL  
2. 9D-0879 [1] MANIFOLD  
3. 8D-5489 [1] SCREEN ASSEM.  
4. 9S-6130 [1] PLUG  
  2S-4078 [1] SEAL  
5. 2B-0947 [4] BOLT  
6. 3B-4508 [14] LOCKWASHER  
7. 6J-0468 [2] INDICATOR ASSEM.  
  2M-9780 [1] SEAL  
8. 7B-3235 [4] BOLT  
9. 5H-6734 [2] SEAL  
10. 8D-4867 [1] TANK ASSEM.  
11. 5J-0096 [6] STUD  
12. 9M-9740 [2] ELEMENT  
13. 8D-5388 [2] BOLT  
  2K-4973 [2] NUT  
14. 8D-5401 [2] RETAINER  
15. 6J-8391 [2] SPRING  
16. 8D-5402 [2] VALVE  
17. 8D-4595 [2] SEAT  
18. 2J-6133 [2] SPRING  
19. 8D-5403 [2] SPACER  
20. 8D-8372 [2] RETAINER ASSEM.  
21. 1H-6227 [1] SEAL  
22. 6J-1080 [1] GROMMET  
23. 8D-5016 [1] PLATE  
24. 4J-8265 [6] NUT  
  4B-4278 [6] WASHER  
25. 6J-1079 [1] RETAINER  
26. 6J-1081 [1] GLASS  
 

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}
Specifications
Hydraulic Pump<BR> (8J6855) (Part of 8J6168 Pump Group)
16G MOTOR GRADER HYDRAULIC SYSTEM AND STEERING
Steering Metering Pump<BR> (3G3898)
16G MOTOR GRADER HYDRAULIC SYSTEM AND STEERING
Hydraulic Pump<BR> (9J484) (Part of 8J6168 Pump Group)
16G MOTOR GRADER HYDRAULIC SYSTEM AND STEERING
Drive For Hydraulic Pump
16G MOTOR GRADER HYDRAULIC SYSTEM AND STEERING
Supplemental Steering Pump
"G" SERIES MOTOR GRADERS SUPPLEMENTAL STEERING SYSTEM
Motor - 24 Volt<BR> (2G5515)
"G" SERIES MOTOR GRADERS SUPPLEMENTAL STEERING SYSTEM
Relief Valve<BR> (4T1056)
"G" SERIES MOTOR GRADERS SUPPLEMENTAL STEERING SYSTEM
Hydraulic Pump
14G & 16G MOTOR GRADERS HYDRAULIC SYSTEM AND STEERING
Steering Metering Pump<BR> 14G - 9T4250; 16G - 9T4251
14G & 16G MOTOR GRADERS HYDRAULIC SYSTEM AND STEERING
Electric Drive Pump Groups
"G" SERIES MOTOR GRADERS SUPPLEMENTAL STEERING SYSTEM
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}
Specifications For Hydraulic Piston Pump And Motor Components {3083, 3203, 3221, 3222, 4351, 5058, 5069, 5070, 5117}
Specifications For Hydraulic Piston Pump And Motor Components {3083, 3203, 3221, 3222, 4351, 5058, 5069, 5070, 5117}
Hydraulic Piston Pumps Used in Certain Models of Caterpillar Equipment{3203, 5070, 5084}
Hydraulic Piston Pumps Used in Certain Models of Caterpillar Equipment{3203, 5070, 5084}
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}
Information Release Memo
CAT REMAN EXPANDS HYD GEAR &amp; PISTON PUMP &amp; MOTOR OPTIONS
CAT REMAN EXPANDS HYD GEAR & PISTON PUMP & MOTOR OPTIONS
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}
Bench Test Procedure for Hydraulic Piston Pumps{5070}
Bench Test Procedure for Hydraulic Piston Pumps{5070}
Bench Test Procedure for Hydraulic Piston Pumps{0599, 5070, 5070}
Bench Test Procedure for Hydraulic Piston Pumps{0599, 5070, 5070}
Bench Test Procedure for Hydraulic Piston Pumps{0599, 5070, 5070}
Bench Test Procedure for Hydraulic Piston Pumps{0599, 5070, 5070}
Disassembly and Assembly
Steering Pump
16G MOTOR GRADER VEHICLE SYSTEMS
Cooler Pump
16G MOTOR GRADER VEHICLE SYSTEMS
Hydraulic Pump
16G MOTOR GRADER VEHICLE SYSTEMS
Steering Pump
14G & 16G MOTOR GRADER VEHICLE SYSTEMS
Cooler Pump
14G & 16G MOTOR GRADER VEHICLE SYSTEMS
Pressure And Flow Compensator Valve
14G & 16G MOTOR GRADER VEHICLE SYSTEMS
Hydraulic Pump
14G & 16G MOTOR GRADER VEHICLE SYSTEMS
Service Magazine

Caterpillar Parts SIS Catalog 16G :

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