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8N7174 FRONT TIMING GEAR GROUP SERIAL NO. 51Y470-UP 3512 VEHICULAR ENGINE


BASIC ENGINE
GEAR GP
DRIVE GP-ACCESSORY
DRIVE GP-AUXILIARY
DRIVE GP-PUMP
POWER TAKE-OFF GP
CLUTCH GP

VEHICULAR ENGINE 3512 VEHICULAR ENGINE 51Y
 3512 VEHICULAR ENGINE 51Y00001-00512 SEBP1292 3512 51Y   (1980)

BASIC ENGINE

GEAR GP
GEAR GP-FRONT
8N-7174 GEAR GP-FRONT
GEAR GP-FRONT
8N-7174 GEAR GP-FRONT
GEAR GP-REAR
8N-7176 GEAR GP-REAR
GEAR GP-REAR
8N-7176 GEAR GP-REAR
GEAR GP-REAR
7W-2423 GEAR GP-REAR
 

#SEBP12920050
 

8N-7174: GEAR GP-FRONT

8N7174 FRONT TIMING GEAR GROUP
SERIAL NO. 51Y470-UP
c303551 SEBP1292
8N7174 GEAR GP-FRONT Parts scheme
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Parts for your 3512 VEHICULAR ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3B-8453 [1] SEAL-O-RING  
2. 7N-5263 [1] ADAPTER AS-PUMP  
3. 7N-5244 [1] BEARING-SLEEVE  
4. 7N-5246 [2] WASHER-THRUST  
5. 4B-3388 [4] BOLT  
6. 9M-1974 [4] WASHER  
7. 0S-1594 [7] BOLT  
8. 2W-7585 C [1] WASHER-THRUST  
9. 7N-2047 [1] DOWEL  
10. 3S-1307 [12] BOLT-12 POINT HEAD  
11. 8N-6645 [1] GEAR-CRANKSHAFT (92 TEETH)  
12. 7N-5253 [1] SHAFT  
13. 8M-5255 [2] SEAL-O-RING  
14. 2B-2006 [2] BOLT  
15. 0T-0065 [1] BOLT  
16. 7N-5245 [1] ADAPTER AS-PUMP  
17. 7N-5244 [1] BEARING-SLEEVE  
18. 6K-3771 [12] BOLT-12 POINT HEAD  
19. 7N-5250 [1] GEAR-PUMP DRIVE (69 TEETH)  
20. 7N-5241 [1] GEAR AS-IDLER (53 TEETH)  
21. 7N-5243 [1] BEARING-SLEEVE  
22. 7N-5239 [1] SHAFT AS-PUMP DRIVE  
23. 2F-4547 [1] PIN-DOWEL  
24. 1T-0132 [1] SEAL-O-RING  
  C   CHANGE FROM PREVIOUS TYPE
 

#SEBP12920051
 

7N-4871: DRIVE GP-ACCESSORY

7N4871 ACCESSORY DRIVE GROUP-UPPER R.H.
c231232 SEBP1292
7N4871 DRIVE GP-ACCESSORY Parts scheme
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Parts for your 3512 VEHICULAR ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6H-1717 [2] BOLT  
2. 5P-8245 [2] WASHER  
3. 8M-1279 [1] COVER-PROTECTIVE  
4. 7J-8114 [1] GASKET  
5. 7N-5743 [1] ADAPTER AS  
6. 7N-5244 [1] BEARING-SLEEVE  
7. 8M-5255 [1] SEAL-O-RING  
8. 7N-5875 [1] GEAR-AUXILIARY DRIVE (RH-63 TEETH)  
9. 7N-5874 [1] SHAFT-AUXILIARY DRIVE  
10. 2B-2695 C [4] BOLT  
11. 9M-1974 C [4] WASHER  
12. 7N-7539 C [2] WASHER-THRUST  
13. 1T-0132 [1] SEAL-O-RING  
14. 7N-5279 [1] ADAPTER AS  
15. 7N-5244 [1] BEARING-SLEEVE  
16. 0S-1594 [6] BOLT  
17. 9F-2247 C [2] PLUG  
18. 3B-8453 [1] SEAL-O-RING  
19. 6K-3772 [12] BOLT-12 POINT HEAD  
20. 7N-5248 [1] GEAR-AUXILIARY DRIVE (LH-63 TEETH)  
21. 5P-2546 [12] BOLT-12 POINT HEAD  
22. 0L-1351 [4] BOLT  
23. 4D-0514 [1] PLUG-PIPE  
  2M-4453 [1] SEAL-O-RING  
  C   CHANGE FROM PREVIOUS TYPE
 

#SEBP12920052
 

7N-7959: DRIVE GP-ACCESSORY

7N7959 ACCESSORY DRIVE GROUP-UPPER L.H.
AN ATTACHMENT
c229837 SEBP1292
7N7959 DRIVE GP-ACCESSORY Parts scheme
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Parts for your 3512 VEHICULAR ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7N-5279 [1] ADAPTER ASSEM.  
    (Includes)
2. 7N-5244 [1] BEARING  
3. 7N-8667 [2] COVER  
4. 5F-3999 [2] SEAL  
5. 0S-1566 [4] BOLT  
6. 5P-8247 [4] WASHER  
7. 7N-7539 [2] WASHER  
8. 9F-2247 [2] PLUG  
9. 3B-8453 [1] SEAL  
10. 0S-1594 [6] BOLT  
11. 1T-0132 [1] SEAL  
12. 7N-5874 [1] SHAFT  
13. 7N-5248 [1] GEAR (L.H.-63 teeth)  
14. 7N-5875 [1] GEAR (R.H.-63 teeth)  
15. 8M-5255 [1] SEAL  
16. 1T-0720 [6] BOLT  
17. 7N-5905 [1] ADAPTER ASSEM.  
    (Includes)
18. 7N-5244 [1] BEARING  
19. 6K-3772 [12] BOLT  
20. 5P-2546 [12] BOLT  
21. 2B-2695 [4] BOLT  
22. 9M-1974 [4] WASHER  
23. 2M-4453 [1] SEAL  
 

#SEBP12920053
 

7N-7960: DRIVE GP-ACCESSORY

7N7960 ACCESSORY DRIVE GROUP-LOWER L.H.
AN ATTACHMENT
c224810 SEBP1292
7N7960 DRIVE GP-ACCESSORY Parts scheme
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Parts for your 3512 VEHICULAR ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7N-5279 [1] ADAPTER ASSEM.  
    (Includes)
2. 7N-5244 [1] BEARING  
3. 7N-8667 [2] COVER  
4. 5F-3999 [2] SEAL  
5. 0S-1566 [4] BOLT  
6. 5P-8247 [4] WASHER  
7. 7N-7539 [2] WASHER  
8. 9F-2247 [2] PLUG  
9. 3B-8453 [1] SEAL  
10. 0S-1594 [6] BOLT  
11. 1T-0132 [1] SEAL  
12. 7N-5874 [1] SHAFT  
13. 7N-5250 [1] GEAR (69 teeth)  
14. 6K-3771 [12] BOLT  
15. 8M-5255 [2] SEAL  
16. 1T-0720 [6] BOLT  
17. 7N-5905 [1] ADAPTER ASSEM.  
    (Includes)
18. 7N-5244 [1] BEARING  
19. 0T-0065 [1] BOLT  
20. 2B-2006 [2] BOLT  
21. 7N-5253 [1] SHAFT  
22. 7N-5241 [1] GEAR ASSEM. (Idler)  
    (Includes)
23. 7N-5243 [1] BEARING  
24. 2B-2695 [4] BOLT  
25. 9M-1974 [4] WASHER  
26. 7N-5242 [1] WASHER ASSEM.  
    (Includes)
27. 7N-2047 [1] DOWEL  
28. 2M-4453 [1] SEAL  
 

#SEBP12920054
 

8N-9756: DRIVE GP-AUXILIARY

8N9756 AUXILIARY DRIVE GROUP-REAR-TYPE 1
AN ATTACHMENT
c229841 SEBP1292
8N9756 DRIVE GP-AUXILIARY Parts scheme
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Parts for your 3512 VEHICULAR ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1B-5174 [2] PLUG  
2. 7N-3069 [1] HOUSING ASSEM.  
    (Includes)
3. 3F-6795 [6] DOWEL  
4. 7N-3011 [3] BEARING  
5. 7N-2990 [2] GEAR (83 teeth)  
6. 2D-8154 [12] STUD  
  1D-4719 [12] NUT  
  5P-8245 [12] WASHER  
7. 8N-2757 [3] ADAPTER ASSEM.  
    (Each Includes)
8. 7N-3011 [1] BEARING  
9. 3F-5792 [3] SEAL  
10. 0S-1588 [36] BOLT  
  5M-2894 [36] WASHER  
11. 9F-2247 [3] PLUG  
12. 7N-8525 [6] WASHER  
13. 7N-2991 [1] GEAR (83 teeth)  
14. 0L-1026 [3] PLUG  
15. 8M-5253 [3] SEAL  
16. 8N-2802 [3] COVER  
  1P-9270 [3] GASKET  
17. 7N-3007 [3] SHAFT ASSEM.  
    (Each Includes)
18. 2F-4547 [1] DOWEL  
19. 7N-3169 [1] GASKET  
 

#SEBP12920055
 

8N-9756: DRIVE GP-AUXILIARY

8N9756 AUXILIARY DRIVE GROUP-REAR-TYPE 2
AN ATTACHMENT
c334978 SEBP1292
8N9756 DRIVE GP-AUXILIARY Parts scheme
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Parts for your 3512 VEHICULAR ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1B-5174 [2] PLUG  
2. 7N-3069 [1] HOUSING AS.  
3. 3F-6795 [6] DOWEL  
4. 7N-3011 [3] BEARING  
5. 7N-2990 [2] GEAR (83 TEETH)  
6. 2D-8154 [12] STUD  
  1D-4719 [12] NUT  
  5P-8245 [12] WASHER  
7. 8N-2757 [3] ADAPTER AS.  
    (EACH INCLUDES)
8. 7N-3011 [1] BEARING  
9. 3F-5792 [3] SEAL  
10. 0S-1588 [36] BOLT  
  5M-2894 [36] WASHER  
11. 9F-2247 [3] PLUG  
12. 7N-8525 [6] WASHER  
13. 7N-2991 [1] GEAR (83 TEETH)  
14. 0L-1026 [3] PLUG  
15. 8M-5253 [3] SEAL  
16. 8N-2802 [3] COVER  
  1P-9270 [3] GASKET  
17. 7N-3007 [3] SHAFT AS.  
    (EACH INCLUDES)
18. 8T-2153 C [1] SETSCREW  
19. 1W-4736 C [1] GASKET  
  C   INDICATES CHANGE
 

#SEBP12920056
 

7W-0284: MOUNTING GP-HYD PUMP DRIVE

7W0284 HYDRAULIC PUMP DRIVE MOUNTING GROUP
1N3500-PAGE 26A
NOT FOR USE WITH DAMPER GROUP
AN ATTACHMENT
c335853 SEBP1292
7W0284 MOUNTING GP-HYD PUMP DRIVE Parts scheme
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Parts for your 3512 VEHICULAR ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7W-0287 [1] ADAPTER-DAMPER  
2. 5F-6932 [6] BOLT  
  5P-8250 [6] WASHER  
3. 0S-1587 [10] BOLT  
  5P-8245 [10] WASHER  
4. 1N-3500 Y [1] DAMPER GP  
5. 7W-0285 [1] ADAPTER AS  
6. 4N-0683 [2] DOWEL  
7. 2W-8014 [1] COUPLING-FRONT PTO  
  Y   SEPARATE ILLUSTRATION
 

#SEBP12920057
 

7W-0282: POWER TAKE-OFF GP-FRONT

7W0282 FRONT POWER TAKE-OFF GROUP-CLUTCH
3N4130-PAGE 25D, 1N3500-PAGE 26A
AN ATTACHMENT
c335856 SEBP1292
7W0282 POWER TAKE-OFF GP-FRONT Parts scheme
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Parts for your 3512 VEHICULAR ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3N-4130 Y [1] CLUTCH GP (BASIC)  
2. 2W-8014 [1] COUPLING-FRONT PTO  
3. 7W-0287 [1] ADAPTER-DAMPER  
4. 5F-6932 [6] BOLT  
  5P-8250 [6] WASHER  
5. 1N-3500 Y [1] DAMPER GP  
   
6. 7W-0285 [1] ADAPTER AS  
  4N-0683 [2] DOWEL  
7. 0S-1587 [10] BOLT  
  5P-8245 [10] WASHER  
8. 0T-0320 [12] BOLT  
9. 7F-8896 [1] KEY  
  Y   SEPARATE ILLUSTRATION
 

#SEBP12920058
 

3N-4130: CLUTCH GP

3N4130 CLUTCH GROUP-TYPE 1
3N4128-PAGE 25F
PART OF 7W0282 FRONT POWER TAKE-OFF
AN ATTACHMENT
c302919 SEBP1292
3N4130 CLUTCH GP Parts scheme
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Parts for your 3512 VEHICULAR ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6L-5151 [2] KEY  
2. 5L-9653 [1] NUT  
3. 5L-9654 [1] LOCK  
4. 3B-8489 [4] FITTING  
5. 9S-1354 [1] NUT  
  6F-0253 [1] LOCKWASHER  
6. 5N-8645 [1] HOUSING  
7. 5N-6955 [1] PLATE  
8. 0S-1594 [4] BOLT  
9. 5N-8644 [1] PLATE  
10. 3N-4128 J [1] CLUTCH ASSEM.  
11. 6B-3223 [2] CUP  
  4B-7270 [2] CONE  
12. 3B-8488 [1] FITTING  
13. 3H-6591 [1] BOLT  
  5B-2407 [1] LOCK  
14. 5L-9655 [1] RETAINER  
15. 5N-7743 [1] SHAFT  
16. 4H-0019 [1] RACE & ROLLER ASSEM.  
17. 5P-7592 [1] RACE (inner)  
18. 4B-4754 [1] SHAFT  
19. 1L-6931 [4] SCREW ASSEM.  
20. 4B-4810 [1] LEVER ASSEM.  
    (Includes)
  0S-1587 [1] BOLT  
21. 5B-2410 [1] HOSE ASSEM.  
22. 4B-4792 [1] YOKE ASSEM.  
    (Includes)
  0S-1591 [2] BOLT  
  3B-4506 [2] LOCKWASHER  
23. 7F-8897 [1] PLATE  
  J   SEPARATE ILLUSTRATION
 

#SEBP12920059
 

3N-4130: CLUTCH GP

3N4130 CLUTCH GROUP-TYPE 2
3N4128-PAGE 25F
PART OF 7W0282 FRONT POWER TAKE-OFF
AN ATTACHMENT
c602285 SEBP1292
3N4130 CLUTCH GP Parts scheme
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Parts for your 3512 VEHICULAR ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6L-5151 [2] KEY-WOODRUFF  
2. 5L-9653 [1] NUT  
3. 5L-9654 [1] LOCK  
4. 3B-8489 [4] FITTING-GREASE  
5. 9S-1354 [1] NUT  
  6F-0253 [1] LOCKWASHER  
6. 5N-8645 [1] HOUSING-CLUTCH  
7. 108-3561 [1] PLATE-INSTRUCTION  
8. 0S-1594 [4] BOLT  
9. 5N-8644 [1] PLATE-SEAL  
10. 3N-4128 Y [1] CLUTCH AS  
11. 6B-3223 [2] CUP-BEARING  
  4B-7270 [2] CONE-BEARING  
12. 3B-8488 [1] FITTING  
13. 3H-6591 [1] BOLT  
  5B-2407 [1] LOCK  
14. 5L-9655 [1] RETAINER-BEARING  
15. 5N-7743 [1] SHAFT-CLUTCH  
16. 4H-0019 [1] RACE & ROLLER AS  
17. 5P-7592 [1] RACE-ROLLER BEARING (INNER)  
18. 4B-4754 [1] SHAFT-GOVERNOR CONTROL  
19. 1L-6931 [4] SCREW AS-MACHINE  
20. 4B-4810 [1] LEVER AS-HAND  
  0S-1587 [1] BOLT  
21. 4W-8403 CI [1] HOSE AS  
22. 4B-4792 [1] YOKE AS  
  0S-1591 [2] BOLT  
  3B-4506 [2] LOCKWASHER  
23. 7F-8897 [1] PLATE  
24. 2N-1287 C [1] ELBOW-FLARED  
25. 4W-8404 C [1] FITTING  
26. [1] PLATE-WARNING  
  C   CHANGE FROM PREVIOUS TYPE
  I   SEE HOSE FABRICATION GUIDE
  Y   SEPARATE ILLUSTRATION
 

Information:

Engine News
Two Front Timing Gear Housings Available
1987/03/01
New Idler Shaft And Sealing Washers Used In Front Gears And Accessory Drives
1987/04/01
Front Idler And Accessory Drive Gears Improved
1989/05/01
Correct Torque Required For Bolts In Rear Gear Groups; Specification Omitted From Some Service Manuals
1990/04/01
Rear Gear (Cam Drive) Groups Improved
1991/05/01
Service Life of Crankshaft Gears Can Be Extended
1993/07/01
New Gears And Pipe Plugs In Auxiliary Drive Group {1150,1165}
1994/09/01
Correct Installation of Front Gear Train Idler Shaft{1237}
1994/11/01
New Sleeve Bearing Used In Camshaft Idler Gear Assembly In Rear Gear Groups{1206}
1995/11/20
New Camshaft Cover Seal, Crankshaft Cover Seal, And Valve Cover Seal Help Prevent Oil Leaks {1107,1150,1200}
1999/06/01
Front Gear Group Changed To Help Keep Oil Pump Adapter Assembly Bolts Tight{1206,1304}
1999/09/01
Replace the Gear when the Sleeve Bearing is Replaced {1212, 1234}
2005/04/18
A New Oil Pump Adapter Assembly is Used {1206, 1313}
2005/10/31
Procedure for Installing the Camshaft Drive Gear {1212}
2005/12/12
New O-Ring Seals Are Used on the Front Housings of 3500 Engines {1151, 1162, 1166, 1206, 1207}
2010/01/18
Special Instruction
Machining of Replacement Sleeve Bearings{1206, 1212, 1234}
Machining of Replacement Sleeve Bearings{1206, 1212, 1234}
Technical Information Bulletin
Interference between Camshaft Drive Gears and Bolts in the Flywheel Housing in Some 3500 and G3500 Engines{1204}
Interference between Camshaft Drive Gears and Bolts in the Flywheel Housing in Some 3500 and G3500 Engines{1204}
Specifications
Upper Front Gear Groups<BR> 7N4871 (Right Hand) (Standard Rotation) 8N9166 (Left Hand) (Standard Rotation)
3500 VEHICULAR ENGINES
Lower Front Gear Groups<BR> 8N7174 (Right Hand) (Standard Rotation) 7N7960 (Left Hand) (Standard Rotation)
3500 VEHICULAR ENGINES
Rear Gear Groups<BR> (3508)
3500 VEHICULAR ENGINES
Rear Gear Groups (3512 &amp; 3516)<BR> (Earlier Engines With Two Bolt Camshaft Drive Gears)
3500 VEHICULAR ENGINES
Rear Gear Groups (3512 &amp; 3516)<BR> (Later Engines With One Bolt Camshaft Drive Gears)
3500 VEHICULAR ENGINES
Reuse And Salvage Guidelines
Reuse and Salvage for Gear Train and Gear Shafts on Engines {0679, 1151, 1162, 1206}
Reuse and Salvage for Gear Train and Gear Shafts on Engines {0679, 1151, 1162, 1206}
Disassembly and Assembly
Rear Gear Group
3500 VEHICULAR ENGINES
Service Magazine
Engine Storage; Engine Start-Up After Storage{1000}
1982/02/22
Two Front Timing Gear Housings Available{1162,1150}
1987/02/23
New Idler Shaft And Sealing Washers Used In Front Gears And Accessory Drives{1206,1207}
1987/04/06
Front Idler And Accessory Drive Gears Improved {1206,1361}
1989/05/15
New Plug Used In Front Housing For Fuel Injection Control Group{1151,1298}
1990/03/05
Correct Torque Required For Bolts In Rear Gear Groups; Specification Omitted From Some Service Manuals{1204,1237,7568}
1990/04/02
Rear Gear (Cam Drive) Groups Improved{1206,1201,1212,7551,7552,7553}
1991/05/13
Service Life of Crankshaft Gears Can Be Extended{1204}
1993/07/26

Caterpillar Parts SIS Catalog 3512 :

GEAR GP-FRONT
8N-7174 GEAR GP-FRONT
COVER GP-FRONT HOUSING
8N-9642 COVER GP-FRONT HOUSING
COVER GP-FRONT HOUSING
8N-9642 COVER GP-FRONT HOUSING
HOUSING GP-FRONT
8N-8111 HOUSING GP-FRONT
HOUSING GP-FRONT
8N-8111 HOUSING GP-FRONT
TRUNNION GP-ENGINE
7N-1863 TRUNNION GP-ENGINE
MOUNTING GP-REFRIGERANT COMPR
8N-6427 MOUNTING GP-REFRIGERANT COMPR
COVER GP-VALVE MECHANISM
7N-1855 COVER GP-VALVE MECHANISM
DRIVE GP-ACCESSORY
7N-4871 DRIVE GP-ACCESSORY
DRIVE GP-ACCESSORY
7N-7959 DRIVE GP-ACCESSORY
DRIVE GP-ACCESSORY
7N-7960 DRIVE GP-ACCESSORY
DRIVE GP-AUXILIARY
8N-9756 DRIVE GP-AUXILIARY
DRIVE GP-AUXILIARY
8N-9756 DRIVE GP-AUXILIARY
MOUNTING GP-HYD PUMP DRIVE
7W-0284 MOUNTING GP-HYD PUMP DRIVE
POWER TAKE-OFF GP-FRONT
7W-0282 POWER TAKE-OFF GP-FRONT
CLUTCH GP
3N-4130 CLUTCH GP

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178,974 
Caterpillar 3512, mobile generator sets, Construction
- mobile generator sets
FINANZAUTO S.A.
Caterpillar 3512, mobile generator sets, Construction
178,974 
Caterpillar 3512, mobile generator sets, Construction
- mobile generator sets
FINANZAUTO S.A.
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