AVSPARE.COM
parts catalog
  1. Home
  2. Caterpillar catalog

8N-4745 COVER GP-VALVE MECHANISM S/N 6NC1-UP; R6J1-UP; 08Z83000-99999 PART OF 110-5760, 124-4203, 146-4341 ENGINE AR 12H NA


BASIC ENGINE
VALVE MECHANISM GP
CRANKSHAFT GP
CYLINDER BLOCK GP
CYLINDER HEAD GP

MOTOR GRADER 12H NA MOTOR GRADER 4XM
 12H Motor Grader 4XM00001-UP (MACHINE) POWERED BY 3306B Engine SEBP2421 12H NA 4XM   (1995)

BASIC ENGINE

VALVE MECHANISM GP
COVER GP-VALVE MECHANISM
8N-4745 COVER GP-VALVE MECHANISM
VALVE MECHANISM GP
7C-7013 VALVE MECHANISM GP
VALVE MECHANISM GP
7N-8026 VALVE MECHANISM GP
 

#SEBP24210020
 

8N-4745: COVER GP-VALVE MECHANISM

8N-4745 COVER GP-VALVE MECHANISM
S/N 6NC1-UP; R6J1-UP; 08Z83000-99999
PART OF 110-5760, 124-4203, 146-4341 ENGINE AR
i00122470 SEBP2421
8N4745 COVER GP-VALVE MECHANISM Parts scheme
  For full view, you need register

Parts for your 12H NA MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2W-1086 [1] COVER AS-CYLINDER HEAD  
2. 0S-1617 [15] BOLT (5/16-18X0.75-IN)  
3. 9M-1974 [15] WASHER-HARD (8.8X16X2-MM THK)  
4. 133-1247 [1] SEAL-VALVE COVER  
 

#SEBP24210021
 

334-8389: CRANKSHAFT AS

334-8389 CRANKSHAFT AS
S/N 08Z83000-90305
PART OF 6N-8079 CRANKSHAFT GP
i03879106 SEBP2421
3348389 CRANKSHAFT AS Parts scheme
  For full view, you need register

Parts for your 12H NA MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1W-4405 [1] GEAR-CRANKSHAFT (40-TEETH)  
2. 5H-2671 [1] KEY-WOODRUFF  
3. 8T-6757 [6] PLUG-PIPE  
 

#SEBP24210022
 

4P-9856: CRANKSHAFT GP

4P-9856 CRANKSHAFT GP
S/N 6NC1-UP; R6J1-UP; 08Z90306-99999
PART OF 110-5760, 124-4203, 146-4341 ENGINE AR
i00122113 SEBP2421
4P9856 CRANKSHAFT GP Parts scheme
  For full view, you need register

Parts for your 12H NA MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 100-3652 J [2] PLATE-THRUST  
2. 344-2603 [1] CRANKSHAFT AS  
2A. 4P-7827 [1] GEAR-CRANKSHAFT (33-TEETH)  
2B. 5H-2671 [1] KEY-WOODRUFF  
2C. 8T-6757 [6] PLUG-PIPE  
3. 232-3233 J [7] BEARING-MAIN (STANDARD)  
  8N-8225 AB BEARING-MAIN (0.25-MM US)  
  8N-8226 AB BEARING-MAIN (0.51-MM US)  
  8N-8227 AB BEARING-MAIN (0.76-MM US)  
  8N-8228 AB BEARING-MAIN (0.51-MM OS)  
  8N-8229 AB BEARING-MAIN (0.25-MM US, 0.51-MM OS)  
  4P-7305 AB BEARING-MAIN (0.51-MM OS, 0.51-MM US)  
  4P-7306 AB BEARING-MAIN (0.51-MM OS, 0.76-MM US)  
   
    AVAILABLE REPLACEMENT PART(S):
  196-9534 AJ KIT-BASIC ENGINE REPAIR (MAIN BEARING)  
    (INCLUDES STANDARD BEARINGS & THRUST PLATES)
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
  J   KIT MARKED J SERVICES PART(S) MARKED J
  R   REMANUFACTURED PART MAY BE AVAILABLE
 

#SEBP24210023
 

6N-8079: CRANKSHAFT GP

6N-8079 CRANKSHAFT GP
S/N 08Z83000-90305
PART OF 110-5760 ENGINE AR
i00145431 SEBP2421
6N8079 CRANKSHAFT GP Parts scheme
  For full view, you need register

Parts for your 12H NA MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 100-3652 [2] PLATE-THRUST  
2. 334-8389 Y [1] CRANKSHAFT AS  
3. 232-3233 C [7] BEARING-MAIN (STANDARD)  
  8N-8225 AB [7] BEARING-MAIN (0.25-MM US)  
  8N-8226 AB [7] BEARING-MAIN (0.51-MM US)  
  8N-8227 AB [7] BEARING-MAIN (0.76-MM US)  
  8N-8228 AB [7] BEARING-MAIN (0.51-MM OS)  
  8N-8229 AB [7] BEARING-MAIN (0.25-MM US, 0.51-MM OS)  
  4P-7305 AB [7] BEARING-MAIN (0.51-MM OS, 0.51-MM US)  
  4P-7306 AB [7] BEARING-MAIN (0.51-MM OS, 0.76-MM US)  
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
  C   CHANGE FROM PREVIOUS TYPE
  R   REMANUFACTURED PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
 

#SEBP24210024
 

1N-3576: CYLINDER BLOCK GP

1N-3576 CYLINDER BLOCK GP
S/N 6NC1-UP; 08Z83000-99999
FIELD REPLACEMENT FOR @@@@@ 7N-6550@@@@@
i00121946 SEBP2421
1N3576 CYLINDER BLOCK GP Parts scheme
  For full view, you need register

Parts for your 12H NA MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7M-4046 [4] BUSHING  
2. 3J-6019 [1] PLUG  
3. 8K-1207 [2] DOWEL  
4. 4B-5387 [1] PLUG-CUP  
5. 1S-9540 [1] DOWEL  
6. 5B-7652 [2] DOWEL  
7. 6N-8003 [7] CAP-CRANKSHAFT BEARING  
8. 4B-3938 [1] PLUG-CUP  
9. 8B-6349 [2] DOWEL  
10. 5S-8462 [1] STUD  
11. 8N-4110 [1] BUSHING  
12. 4B-9782 [1] BALL  
13. 7S-3224 [14] BOLT (5/8-11X5.25-IN)  
  2S-5658 [14] WASHER-HARD (17X29X3-MM THK)  
 

#SEBP24210025
 

7N-6550: CYLINDER BLOCK GP

7N-6550 CYLINDER BLOCK GP
S/N 6NC1-UP; R6J1-UP; 08Z83000-99999
PART OF 8N-5286 CYLINDER BLOCK GP
FIELD REPLACEMENT ORDER @@@@@ 1N-3576@@@@@, 6N-7727 KIT-CYLINDER BLOCK
i00122389 SEBP2421
7N6550 CYLINDER BLOCK GP Parts scheme
  For full view, you need register

Parts for your 12H NA MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 456-5581 [18] SEAL-O-RING  
2. 371-5941 [6] LINER-CYLINDER  
  104-5512 ABJ INSERT-LINER SEAT (0.822-MM THK)  
  104-5518 ABJ INSERT-LINER SEAT (1.605-MM THK)  
  104-5527 ABJ INSERT-LINER SEAT (2.71-MM THK)  
  104-5530 ABJ INSERT-LINER SEAT (5.21-MM THK)  
    (REFER TO SEBF8198 FOUND IN SISWEB FOR LINER INSERTS.)
3. 2W-6134 [6] BAND-FILLER  
4. 7S-3224 [14] BOLT (5/8-11X5.25-IN)  
5. 6N-8003 [7] CAP-CRANKSHAFT BEARING  
6. 2S-5658 [14] WASHER-HARD (17X29X3-MM THK)  
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
  J   TO REPAIR LIGHT DAMAGE DUE TO EROSION/FRETTING IN THE LINER FLANGE SEATING AREA
 

#SEBP24210026
 

8N-5286: CYLINDER BLOCK GP

8N-5286 CYLINDER BLOCK GP
S/N 6NC1-UP; R6J1-UP; 08Z83000-99999
PART OF 110-5760, 124-4203, 146-4341 ENGINE AR
i00122471 SEBP2421
8N5286 CYLINDER BLOCK GP Parts scheme
  For full view, you need register

Parts for your 12H NA MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7N-6550 Y [1] CYLINDER BLOCK GP  
2. 7M-4046 [4] BUSHING  
3. 8K-1207 [2] DOWEL  
4. 3S-5496 [1] SEAL-O-RING  
5. 8B-6349 [2] DOWEL  
6. 7N-7998 [1] PLATE-BLOCK  
7. 115-7550 [1] GASKET-PLATE  
8. 8T-6764 [1] PLUG-PIPE (1/8-27-THD)  
9. 8T-6763 [1] PLUG-PIPE (1/4-18-THD)  
10. 8T-6765 [4] PLUG-PIPE (1/4-18-THD)  
11. 8M-9307 [1] PLUG (ENGINE OIL)  
12. 8T-6762 [3] PLUG-PIPE (1/2-14-THD)  
13. 5B-7652 [2] DOWEL  
14. 8N-4110 [1] BUSHING  
15. 4B-5387 [1] PLUG-CUP  
16. 4B-9782 [1] BALL  
17. 1S-9540 [1] DOWEL  
18. 5S-8462 [1] STUD  
19. 4B-3938 [1] PLUG-CUP  
20. 6F-7062 [1] WASHER (12.7X19.05X1.83-MM THK)  
  Y   SEPARATE ILLUSTRATION
 

#SEBP24210027
 

7N-8876: CYLINDER HEAD GP

7N-8876 CYLINDER HEAD GP
S/N 6NC1-UP; R6J1-UP; 08Z83000-99999
PART OF 110-5760, 124-4203, 146-4341 ENGINE AR
FIELD REPLACEMENT ORDER @@@@@ 8N-6796@@@@@
i00122393 SEBP2421
7N8876 CYLINDER HEAD GP Parts scheme
  For full view, you need register

Parts for your 12H NA MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-7144 [12] SPRING-VALVE  
2. 1W-5300 [12] ROTOCOIL AS  
    (EACH INCLUDES)
  6N-7174 [1] SHIELD-OIL  
3. 2A-4429 [24] LOCK-RETAINER  
4. 3S-5496 [1] SEAL-O-RING  
5. 111-8015 [1] GASKET AS-CYLINDER HEAD  
6. 100-7860 [6] VALVE-INLET  
7. 148-7455 [6] VALVE-EXHAUST  
8. 9Y-1798 [18] SEAL  
9. 148-7425 [12] GUIDE-VALVE (STANDARD)  
  154-6997 ABF GUIDE-VALVE (0.51-MM OS)  
  154-6998 ABF GUIDE-VALVE (0.13-MM OS)  
10. 7C-4006 [1] CYLINDER HEAD AS  
10A. 3S-8313 [7] PLUG-CUP  
10B. 3P-1896 [13] PLUG-CUP  
10C. 3B-0623 [6] PLUG-CUP  
11. 107-0268 [6] INSERT-VALVE SEAT (INLET)(STANDARD)  
  ABF INSERT-VALVE SEAT (0.13-MM OS, INLET)  
  ABF INSERT-VALVE SEAT (0.25-MM OS, INLET)  
  ABF INSERT-VALVE SEAT (0.51-MM OS, INLET)  
  ABF INSERT-VALVE SEAT (0.76-MM OS, INLET)  
12. 107-0265 [6] INSERT-VALVE SEAT (EXHAUST)(STANDARD)  
  ABF INSERT-VALVE SEAT (0.13-MM OS, EXHAUST)  
  ABF INSERT-VALVE SEAT (0.25-MM OS, EXHAUST)  
  ABF INSERT-VALVE SEAT (0.51-MM OS, EXHAUST)  
  ABF INSERT-VALVE SEAT (0.76-MM OS, EXHAUST)  
13. 8T-6762 [3] PLUG-PIPE (1/2-14-THD)  
14. 7N-8018 [6] SEAL  
15. 8T-6763 [1] PLUG-PIPE (1/4-18-THD)  
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
  F   NOT SHOWN
  R   REMANUFACTURED PART MAY BE AVAILABLE
 

#SEBP24210028
 

7W-0362: CYLINDER HEAD GP

7W-0362 CYLINDER HEAD GP
S/N 6NC1-UP; 08Z83000-96263
CONTAINS VALVES
FIELD REPLACEMENT FOR @@@@@ 7N-8876@@@@@
i01426897 SEBP2421
7W0362 CYLINDER HEAD GP Parts scheme
  For full view, you need register

Parts for your 12H NA MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-7144 [12] SPRING-VALVE  
2. 1W-5300 [12] ROTOCOIL AS  
    (EACH INCLUDES)
  6N-7174 [1] SHIELD-OIL  
3. 2A-4429 [24] LOCK-RETAINER  
4. 8N-6796 Y [1] CYLINDER HEAD GP  
5. 100-7860 [6] VALVE-INLET  
6. 148-7455 [6] VALVE-EXHAUST  
  R   REMANUFACTURED PART MAY BE AVAILABLE
  Y   SEPARATE ILLUSTRATION
 

#SEBP24210029
 

8N-6796: CYLINDER HEAD GP

8N-6796 CYLINDER HEAD GP
S/N 6NC1-UP; 08Z83000-99999
CONTAINS NO VALVES
PART OF 7W-0362 CYLINDER HEAD GP
FIELD REPLACEMENT FOR @@@@@ 7N-8876@@@@@
i00122475 SEBP2421
8N6796 CYLINDER HEAD GP Parts scheme
  For full view, you need register

Parts for your 12H NA MOTOR GRADER:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 148-7425 [12] GUIDE-VALVE (STANDARD)  
  154-6997 AB GUIDE-VALVE (0.51-MM OS)  
  154-6998 AB GUIDE-VALVE (0.13-MM OS)  
2. 5M-2894 [4] WASHER-HARD (10.2X18.5X2.5-MM THK)  
3. 8T-6762 [3] PLUG-PIPE (1/2-14-THD)  
4. 5S-6735 [1] GASKET  
5. 1P-6367 [1] COVER  
6. 0S-1594 [4] BOLT (3/8-16X1-IN)  
7. 8T-6763 [1] PLUG-PIPE (1/4-18-THD)  
8. 8N-4485 [1] VALVE AS-VENT (ENGINE COOLANT)  
9. 107-0265 [6] INSERT-VALVE SEAT (EXHAUST)(STANDARD)  
  AB INSERT-VALVE SEAT (0.13-MM OS, EXHAUST)  
  AB INSERT-VALVE SEAT (0.25-MM OS, EXHAUST)  
  AB INSERT-VALVE SEAT (0.51-MM OS, EXHAUST)  
  AB INSERT-VALVE SEAT (0.76-MM OS, EXHAUST)  
10. 107-0268 [6] INSERT-VALVE SEAT (INLET)(STANDARD)  
  AB INSERT-VALVE SEAT (0.13-MM OS, INLET)  
  AB INSERT-VALVE SEAT (0.25-MM OS, INLET)  
  AB INSERT-VALVE SEAT (0.51-MM OS, INLET)  
  AB INSERT-VALVE SEAT (0.76-MM OS, INLET)  
11. 3B-0623 [6] PLUG-CUP  
12. 3S-8313 [7] PLUG-CUP  
13. 3P-1896 [13] PLUG-CUP  
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
 

Information:

Truck Engine News
Set Engine Valve Lash After Installing All Remanufactured Long Blocks {1102, 1121, 1123, 1209}
2012/10/08
Engine News
Set Engine Valve Lash After Installing All Remanufactured Long Blocks {1102, 1121, 1123, 1209}
2012/10/08
Tool Operating Manual
Operating Instructions for 155-1536 Valve Recession Tool Kit for all G3500 and 3500 Engines{0374, 0599, 0701, 0703, 0759, 0767}
Operating Instructions for 155-1536 Valve Recession Tool Kit for all G3500 and 3500 Engines{0374, 0599, 0701, 0703, 0759, 0767}
Operating Instructions for 148-2997 Valve Recession Tool Group Used On 3600, G3600, and C175 Engines{0374, 0599, 0701, 0703, 0759}
Operating Instructions for 148-2997 Valve Recession Tool Group Used On 3600, G3600, and C175 Engines{0374, 0599, 0701, 0703, 0759}
CRB Valve Spring Testers 8S-2263 and 4C-9496{0374, 0599, 0700, 0701, 1108}
CRB Valve Spring Testers 8S-2263 and 4C-9496{0374, 0599, 0700, 0701, 1108}
Reuse And Salvage Guidelines
Reuse & Salvage for Valvetrain Components {1102, 1108, 1109, 1121, 1123}
Reuse & Salvage for Valvetrain Components {1102, 1108, 1109, 1121, 1123}
Disassembly and Assembly
Compression Brake - Remove
3304B and 3306B Engines for Caterpillar Built Machines
Compression Brake - Install
3304B and 3306B Engines for Caterpillar Built Machines
Compression Brake - Disassemble
3304B and 3306B Engines for Caterpillar Built Machines
Compression Brake - Assemble
3304B and 3306B Engines for Caterpillar Built Machines
Rocker Shaft and Pushrod - Remove
3304B and 3306B Engines for Caterpillar Built Machines
Rocker Shaft - Disassemble
3304B and 3306B Engines for Caterpillar Built Machines
Rocker Shaft - Assemble
3304B and 3306B Engines for Caterpillar Built Machines
Lifter Group - Remove and Install
3304B and 3306B Engines for Caterpillar Built Machines
Rocker Shaft and Pushrod - Install
3304B and 3306B Engines for Caterpillar Built Machines
Valve Mechanism Cover - Remove and Install
3304B and 3306B Engines for Caterpillar Built Machines
Service Magazine
New Tools Are Available To Help Find The Top Center Position For No. 1 Piston {1105}
2001/11/19
Set Engine Valve Lash After Installing All Remanufactured Long Blocks {1102, 1121, 1123, 1209}
2012/10/08

Caterpillar Parts SIS Catalog 12H NA :

COVER GP-FRONT HOUSING
2P-6529 COVER GP-FRONT HOUSING
COVER GP-CYLINDER HEAD
2P-6530 COVER GP-CYLINDER HEAD
COVER GP-CYLINDER BLOCK
8N-3163 COVER GP-CYLINDER BLOCK
COVER GP-CYLINDER BLOCK
7N-1292 COVER GP-CYLINDER BLOCK
CAMSHAFT GP
1N-4406 CAMSHAFT GP
AIR COMPRESSOR GP
7W-8399 AIR COMPRESSOR GP
AIR COMPRESSOR GP
111-7994 AIR COMPRESSOR GP
AIR COMPRESSOR GP
110-5765 AIR COMPRESSOR GP
CRANKSHAFT AS
334-8389 CRANKSHAFT AS
CRANKSHAFT GP
4P-9856 CRANKSHAFT GP
CRANKSHAFT GP
6N-8079 CRANKSHAFT GP
CYLINDER BLOCK GP
1N-3576 CYLINDER BLOCK GP
CYLINDER BLOCK GP
7N-6550 CYLINDER BLOCK GP
CYLINDER BLOCK GP
8N-5286 CYLINDER BLOCK GP
CYLINDER HEAD GP
7N-8876 CYLINDER HEAD GP
CYLINDER HEAD GP
7W-0362 CYLINDER HEAD GP

Truck sale:

Caterpillar 12HNA, Construction
On Request 
Caterpillar 12HNA, Construction
- motor graders
WILLIAM ADAMS PTY. LTD.
Australia
Caterpillar 12HNA, Construction
96,997 USD 
Caterpillar 12HNA, Construction
- motor graders
WESTRAC
Western Australia, Australia
Caterpillar 12HNA, Construction
62,500 
Caterpillar 12HNA, Construction
- motor graders
FOLEY EQUIPMENT COMPANY
Caterpillar 12HNA, Construction
69,800 
Caterpillar 12HNA, Construction
- motor graders
YANCEY BROS. CO.
GA
CATERPILLAR 12HNA 2007
 
CATERPILLAR 12HNA 2007
- MOTOR GRADERS
HASTINGS DEERING (AUSTRALIA) LTD.
Back to top
Contacts Request list Affiliate disclosure
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.
AVSpare.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only. Cat® and Caterpillar® are registered trademarks of Caterpillar, Inc.