7N8874 CYLINDER HEAD GROUP*R 120G MOTOR GRADER



BASIC ENGINE
CYLINDER HEAD GP
LIFTING GP-ENGINE
CYLINDER HEAD GP
LIFTING GP-ENGINE
VALVE MECHANISM GP
MOUNTING GP-ENGINE

MOTOR GRADER 120G MOTOR GRADER 11W
 120G MOTOR GRADER 11W01019-01250 (MACHINE) POWERED BY 3304 ENGINE MEBP1300 120G 11W   (1975)

BASIC ENGINE

CYLINDER HEAD GP
COVER GP-CYLINDER HEAD
2P-6530 COVER GP-CYLINDER HEAD
CYLINDER HEAD GP
7N-8874 CYLINDER HEAD GP
FASTENER GP-CYLINDER HEAD
7N-9534 FASTENER GP-CYLINDER HEAD
 

#MEBP13000030
 

7N-8874: CYLINDER HEAD GP

7N8874 CYLINDER HEAD GROUP*R
c404456 MEBP1300
7N8874 CYLINDER HEAD GP Parts scheme
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Parts for your 120G MOTOR GRADER:

Pos. Part No Qty Parts name Comments
1. 2A-4429 [16] LOCK-RETAINER  
2. 7N-8018 [4] SEAL-WATER  
3. 7S-7144 [8] SPRING-VALVE  
4. 6N-9915 [4] VALVE-INLET  
5. 6N-9916 [4] VALVE-EXHAUST  
6. 7N-8022 [1] GASKET-CYLINDER HEAD  
7. 3S-5496 [1] SEAL-O-RING  
8. 4W-8087 C [12] SEAL-WATER  
9. 1N-4304 R [1] CYLINDER HEAD GP  
10. 2P-1262 [8] GUIDE-VALVE  
11. 3S-8313 C [4] PLUG-CUP  
12. 5M-6213 [1] PLUG  
13. 0S-1594 [4] BOLT  
14. 5M-2894 [4] WASHER  
15. 1P-6367 [1] COVER  
16. 5S-6735 [1] GASKET  
17. 2B-0858 [3] PLUG-PIPE  
18. 3B-0623 [4] PLUG-CUP  
19. 8N-4485 C [1] VALVE AS  
20. 2W-4837 C [4] INSERT (EXHAUST)  
21. 7N-4448 [4] INSERT (INTAKE)  
22. 3P-1896 [8] PLUG-CUP  
23. 1W-5300 C [8] ROTOCOIL AS  
    (EACH INCLUDES)
  8N-7782 [1] ROTOCOIL AS  
24. 6N-7174 C [1] SHIELD-OIL  
  C   CHANGE FROM PREVIOUS TYPE
  R   REMFG PART MAY BE AVAILABLE
 

#MEBP13000031
 

7N-9122: LIFTING GP

7N9122 ENGINE LIFTING GROUP
ENGINE SERIAL NO. 7Z1 TO 7Z927 INCLUSIVE
c226950 MEBP1300
7N9122 LIFTING GP Parts scheme
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Parts for your 120G MOTOR GRADER:

Pos. Part No Qty Parts name Comments
1. 7N-9123 [1] PLATE-LIFTING EYE  
2. 6N-7650 [1] PLATE-LIFTING EYE  
3. 4B-3823 C [4] BOLT  
4. 5P-8245 C [4] WASHER 25.5MM(1IN)THK  
5. 7M-1026 [2] WASHER 1.5MM(.060IN)THK  
  C   CHANGE FROM PREVIOUS TYPE
 

#MEBP13000032
 

7N-9534: FASTENER GP-CYLINDER HEAD

7N9534 CYLINDER HEAD FASTENER GROUP
c227966 MEBP1300
7N9534 FASTENER GP-CYLINDER HEAD Parts scheme
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Parts for your 120G MOTOR GRADER:

Pos. Part No Qty Parts name Comments
1. 5B-9603 [5] BOLT (3/8-16X5IN)  
2. 1B-7709 C [3] BOLT (5/8-11X8IN)  
3. 2S-0736 C [17] WASHER-HARD  
4. 1D-4595 [14] BOLT (5/8-11X6IN)  
  C   CHANGE FROM PREVIOUS TYPE
 

#MEBP13000033
 

7N-9122: LIFTING GP

7N9122 ENGINE LIFTING GROUP
ENGINE SERIAL NO. 7Z1839-UP
c233152 MEBP1300
7N9122 LIFTING GP Parts scheme
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Parts for your 120G MOTOR GRADER:

Pos. Part No Qty Parts name Comments
1. 8N-6827 C [1] PLATE  
2. 8N-8721 C [1] PLATE  
3. 6V-1999 C [4] BOLT  
4. 8D-5054 C [4] WASHER  
  C   INDICATES CHANGE
 

#MEBP13000034
 

1W-5567: LIFTING GP

1W5567 ENGINE LIFTING GROUP
ENGINE SERIAL NO. 7Z928 TO 7Z1838 INCLUSIVE
c234169 MEBP1300
1W5567 LIFTING GP Parts scheme
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Parts for your 120G MOTOR GRADER:

Pos. Part No Qty Parts name Comments
1. 7N-9123 [1] PLATE  
2. 6N-7650 [1] PLATE  
3. 4B-3823 [4] BOLT  
4. 5P-8245 [4] WASHER 25.5 mm(1 in.) thick  
5. 7M-1026 [2] WASHER 1.5 mm(.060 in.) thick  
 

#MEBP13000035
 

7N-8024: VALVE MECHANISM GP

7N8024 VALVE MECHANISM GROUP-TYPE 1
c227938 MEBP1300
7N8024 VALVE MECHANISM GP Parts scheme
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Parts for your 120G MOTOR GRADER:

Pos. Part No Qty Parts name Comments
1. 8N-3313 C [1] SHAFT ASSEM.  
    (Includes)
  0L-1026 [2] PLUG  
2. 7N-8015 [1] BRACKET  
  5M-4606 [1] DOWEL  
3. 1B-7709 [1] BOLT  
  2S-0736 [1] WASHER  
4. 5P-5598 [1] SEAL  
5. 4B-4910 [3] SPRING  
6. 9H-1110 [8] WASHER  
7. 5S-5879 [2] BRACKET  
8. 8N-3324 C [4] ARM ASSEM. (exhaust)  
9. 8N-3326 C [4] ARM ASSEM. (intake)  
10. 1B-4203 [8] NUT  
11. 5S-5917 [8] SCREW  
12. 8S-1499 [1] BRACKET ASSEM.  
    (Includes)
  1L-5072 [1] DOWEL  
13. 9M-9886 H [2] WASHER  
  9H-1112 [2] SPRING  
14. 9H-1113 [2] RING  
15. 5S-5918 [8] ROD  
16. 7S-3161 [8] LIFTER  
  C   INDICATES CHANGE
  H   USE AS REQUIRED
 

#MEBP13000036
 

2P-6514: COVER GP-VALVE MECHANISM

8N4446 VALVE MECHANISM COVER GROUP
c228526 MEBP1300
2P6514 COVER GP-VALVE MECHANISM Parts scheme
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Parts for your 120G MOTOR GRADER:

Pos. Part No Qty Parts name Comments
1. 8N-0264 [1] COVER ASSEM.  
2. 8S-1606 [1] GASKET  
3. 0S-1617 [11] BOLT  
  3B-4505 [11] LOCKWASHER  
 

#MEBP13000037
 

7N-8024: VALVE MECHANISM GP

7N8024 VALVE MECHANISM GP-TYPE 2
c480067 MEBP1300
7N8024 VALVE MECHANISM GP Parts scheme
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Parts for your 120G MOTOR GRADER:

Pos. Part No Qty Parts name Comments
1. 9H-1113 [2] RING-RETAINER  
2. 9H-1110 [8] WASHER  
3. 9H-1112 [2] SPRING  
4. 9M-9886 B [2] WASHER  
5. 8M-4448 C [1] SEAL-O-RING  
6. 8S-1498 [1] BRACKET-SHAFT  
7. 1L-5072 [1] DOWEL  
8. 8N-3325 C [4] ROCKER ARM GP-VALVE EXHAUST  
    (EACH INCLUDES)
9. 5S-5917 [1] SCREW-ROCKER ADJUSTING  
10. 3S-2713 [1] NUT-FULL  
11. 2S-0736 [1] WASHER-HARD  
12. 1B-7709 [1] BOLT  
13. 8N-3327 C [4] ROCKER ARM GP-VALVE INTAKE  
    (EACH INCLUDES)
14. 5S-5917 [1] SCREW-ROCKER ADJUSTING  
15. 3S-2713 [1] NUT-FULL  
16. 4B-4910 [3] SPRING  
17. 5S-5879 [2] BRACKET-SHAFT  
18. 8N-3312 [1] SHAFT-ROCKER ARM  
19. 6V-3508 [1] PLUG-CUP  
20. 5M-4606 [1] DOWEL  
21. 7N-8015 [1] BRACKET-ROCKER ARM SHAFT  
22. 5S-5918 [8] ROD-VALVE PUSH  
23. 7S-3161 [8] LIFTER-VALVE  
  B   USE AS REQUIRED
  C   CHANGE FROM PREVIOUS TYPE
 

#MEBP13000038
 

4P-3440: TRUNNION GP-ENGINE

4P3440 TRUNNION GP-ENGINE
c500554 MEBP1300
4P3440 TRUNNION GP-ENGINE Parts scheme
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Parts for your 120G MOTOR GRADER:

Pos. Part No Qty Parts name Comments
1. 0L-1329 [3] BOLT  
2. 2P-1692 [1] SEAL-O-RING  
3. 8N-6051 [1] TRUNNION AS  
4. 8N-5598 [1] ADAPTER AS-TRUNNION  
 

#MEBP13000039
 

7N-4141: SUPPORT GP-ENGINE

7N4141 ENGINE SUPPORT GROUP-REAR
c170813 MEBP1300
7N4141 SUPPORT GP-ENGINE Parts scheme
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Parts for your 120G MOTOR GRADER:

Pos. Part No Qty Parts name Comments
1. 0S-1595 [8] BOLT  
2. 3P-0132 [2] SUPPORT ASSEM.  
    (Includes)
  2J-7716 [1] SPACER  
3. 8H-6508 [2] BOLT  
4. 1D-5118 [2] NUT  
 

Information:

Tool Operating Manual
185-5321 Cylinder Head Lifting Hook Assembly{0599, 0632, 0703, 1101, 6459}
185-5321 Cylinder Head Lifting Hook Assembly{0599, 0632, 0703, 1101, 6459}
Reuse And Salvage Guidelines
Engine Valve Failure Modes{1100, 1105}
Engine Valve Failure Modes{1100, 1105}
Reuse and Salvage for Cylinder Head Assemblies {1100, 1101, 1103, 1104, 1105, 1106, 1108, 1109, 1115, 1117, 1121, 1124, 1125}
Reuse and Salvage for Cylinder Head Assemblies {1100, 1101, 1103, 1104, 1105, 1106, 1108, 1109, 1115, 1117, 1121, 1124, 1125}
Reuse & Salvage for Valvetrain Components {1102, 1108, 1109, 1121, 1123}
Reuse & Salvage for Valvetrain Components {1102, 1108, 1109, 1121, 1123}
Using the 9U-5383 Vacuum Tester {0774, 0781, 1000, 1100}
Using the 9U-5383 Vacuum Tester {0774, 0781, 1000, 1100}
Applied Failure Analysis
Engine Valve Failure Modes{1100, 1105}
Engine Valve Failure Modes{1100, 1105}
Disassembly and Assembly
Inlet and Exhaust Valves - Remove and Install
3304B and 3306B Engines for Caterpillar Built Machines
Inlet and Exhaust Valve Guides - Remove and Install
3304B and 3306B Engines for Caterpillar Built Machines
Inlet and Exhaust Valve Seat Inserts - Remove and Install
3304B and 3306B Engines for Caterpillar Built Machines
Cylinder Head - Remove
3304B and 3306B Engines for Caterpillar Built Machines
Camshaft Bearings - Remove and Install
3304B and 3306B Engines for Caterpillar Built Machines
Cylinder Head - Install
3304B and 3306B Engines for Caterpillar Built Machines
Service Magazine
New Specification for Reusability of the Intake Valves and Exhaust Valves {1105}
2002/05/13
Caterpillar Warranty Claims on Cylinder Head Valves {1105}
2005/10/03
Later Pre-Chamber Cylinder Heads On Early 3304 Engines Without Drilled Rocker Stands Are Used {1100}
2012/10/11

Caterpillar Parts SIS Catalog 120G :

BALANCER GP
1W-2872 BALANCER GP
CAMSHAFT GP-SINGLE
1N-4436 CAMSHAFT GP-SINGLE
BALANCER GP
5S-6425 BALANCER GP
CAMSHAFT GP-SINGLE
2P-6201 CAMSHAFT GP-SINGLE
PISTON & ROD GP
1W-6588 PISTON & ROD GP
COVER GP-CYLINDER HEAD
2P-6530 COVER GP-CYLINDER HEAD
CRANKSHAFT SERVICE THRUST PLATE-FIELD INSTALLATION
PISTON & ROD GP
8N-2531 PISTON & ROD GP
LIFTING GP
7N-9122 LIFTING GP
FASTENER GP-CYLINDER HEAD
7N-9534 FASTENER GP-CYLINDER HEAD
LIFTING GP
7N-9122 LIFTING GP
LIFTING GP
1W-5567 LIFTING GP
VALVE MECHANISM GP
7N-8024 VALVE MECHANISM GP
COVER GP-VALVE MECHANISM
2P-6514 COVER GP-VALVE MECHANISM
VALVE MECHANISM GP
7N-8024 VALVE MECHANISM GP
TRUNNION GP-ENGINE
4P-3440 TRUNNION GP-ENGINE

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