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7L4914 SHAFT GROUP-LOWER 7251 MARINE TRANSMISSION


MARINE TRANSMISSION
TRANSMISSION GP-MARINE
BASIC ENGINE
COUPLING GP
MARINE TRANSMISSION
TRANSMISSION GP-MARINE
BASIC ENGINE
CLUTCH GP
MARINE TRANSMISSION
TRANSMISSION GP-MARINE
ELECTRICAL AND STARTING SYSTEM
VALVE GP

MARINE TRANSMISSION 7251 MARINE TRANSMISSION 4GB
 7251 MARINE TRANSMISSION 4GB00001-UP SEBP1464 7251 4GB   (1986)

MARINE TRANSMISSION

TRANSMISSION GP-MARINE
HOUSING GP-MARINE TRANSMISSION
3T-4974 HOUSING GP-MARINE TRANSMISSION
SHAFT GP-MAIN
4L-4319 SHAFT GP-MAIN
SHAFT GP-LOWER
7L-4914 SHAFT GP-LOWER
SHAFT GP-LOWER
9G-6768 SHAFT GP-LOWER
PLANETARY GP
2N-2772 PLANETARY GP
PLANETARY GP
9G-7913 PLANETARY GP
 

#SEBP14640020
 

7L-4914: SHAFT GP-LOWER

7L4914 SHAFT GROUP-LOWER
c309961 SEBP1464
7L4914 SHAFT GP-LOWER Parts scheme
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Parts for your 7251 MARINE TRANSMISSION:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5D-0353 [8] BOLT-SELF LOCKING  
2. 5L-3321 [1] RING-RETAINER  
3. 4L-4356 [1] KEY  
4. 3T-6712 [1] SPACER  
5. 5L-3327 [1] RACE-ROLLER BEARING (INNER)  
6. 5L-3328 [1] RACE & ROLLER AS (OUTER)  
7. 5L-3324 [1] SPACER  
8. 3T-3446 [1] SPACER  
9. 7L-5244 [1] KEY  
10. 6L-5437 [1] BEARING AS-ROLLER  
11. 9G-9220 [1] PLATE  
12. 5K-7143 [10] BOLT  
13. 4L-1307 [1] SHAFT-LOWER DRIVE  
14. 5K-9237 [1] ELBOW  
15. 6T-1642 [1] TUBE AS  
16. 5P-8245 [2] WASHER  
17. 5D-9844 C [2] BOLT-SELF LOCKING  
18. 8L-8540 C [1] BRACKET-INLET  
  C   CHANGE FROM PREVIOUS TYPE
 

#SEBP14640021
 

9G-6768: SHAFT GP-LOWER

9G6768 SHAFT GROUP-LOWER
c176132 SEBP1464
9G6768 SHAFT GP-LOWER Parts scheme
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Parts for your 7251 MARINE TRANSMISSION:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5D-0353 [8] BOLT  
2. 5L-3321 [1] RING  
3. 4L-4356 [1] KEY  
4. 4L-1307 [1] SHAFT  
5. 5L-3327 [1] RACE (inner)  
6. 5L-3328 [1] RACE & ROLLER ASSEM. (outer)  
7. 5L-3324 [1] SPACER  
8. 5L-3316 [1] SPACER  
9. 7L-5244 [1] KEY  
10. 6L-5437 [1] BEARING ASSEM.  
11. 8L-8538 [1] PLATE  
12. 5K-7143 [8] BOLT  
 

#SEBP14640022
 

3N-7064: SHAFT GP-OUTPUT

3N7064 OUTPUT SHAFT GROUP
c315030 SEBP1464
3N7064 SHAFT GP-OUTPUT Parts scheme
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Parts for your 7251 MARINE TRANSMISSION:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3L-3321 [1] KEY  
2. 5H-4894 [2] SEAL-LIP TYPE  
3. 3B-8489 [1] FITTING-GREASE  
4. 0S-1587 [16] BOLT  
  3B-4508 [16] LOCKWASHER  
5. 6L-6075 [1] RETAINER-BEARING  
6. 6L-6076 [1] RETAINER AS  
7. 4L-1301 [1] RETAINER-BEARING  
8. 4L-4344 [1] GASKET-RADIUS COVER  
9. 8H-8257 [1] SEAL-O-RING  
10. 0T-0703 [1] BOLT  
  0L-0364 [1] LOCK  
11. 3N-6500 [1] SHAFT-OUTPUT  
12. 5L-2891 [1] NUT  
13. 6L-5437 [1] BEARING AS-ROLLER  
14. 3T-6686 [1] COVER AS  
15. 4B-9784 [1] BALL  
 

#SEBP14640023
 

2N-2772: PLANETARY GP

2N2772 PLANETARY GROUP-5.11:1 RATIO
c164548 SEBP1464
2N2772 PLANETARY GP Parts scheme
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Parts for your 7251 MARINE TRANSMISSION:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7L-6967 [1] CARRIER ASSEM.  
    (Includes)
  6F-0984 [3] DOWEL  
2. 5D-0353 C [4] BOLT  
3. 5L-8938 [1] PLATE  
4. 3N-1213 [3] SHAFT ASSEM.  
5. 4L-8290 [6] WASHER  
6. 2N-2832 [1] GEAR (111 teeth)  
7. 8L-6233 [3] GEAR (42 teeth)  
8. 6L-5256 [3] BEARING ASSEM.  
9. 5L-8932 [1] SPACER  
10. 2N-6402 [1] SHAFT ASSEM.  
    (Includes)
11. 4K-8603 [1] PLUG  
12. 2N-2983 [1] TUBE  
13. 2N-6407 [1] GEAR (27 teeth)  
14. 5K-9107 C [9] BOLT  
15. 2N-4642 [3] PLATE  
  C   INDICATES CHANGE
 

#SEBP14640024
 

9G-7913: PLANETARY GP

9G7913 PLANETARY GROUP-4.00:1 RATIO
c232478 SEBP1464
9G7913 PLANETARY GP Parts scheme
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Parts for your 7251 MARINE TRANSMISSION:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4L-8300 [6] WASHER  
2. 6L-6180 [3] BEARING  
3. 9G-7915 [3] GEAR (36 teeth)  
4. 2N-6402 [1] SHAFT ASSEM.  
  4K-8603 [1] PLUG  
5. 2N-2983 [1] TUBE  
6. 9G-7916 [1] GEAR (36 teeth)  
7. 5L-8932 [1] SPACER  
8. 9G-7914 [1] GEAR  
9. 5K-9107 [9] BOLT  
10. 2N-4642 [3] PLATE  
11. 7L-6969 [1] CARRIER ASSEM.  
  6F-0984 [3] DOWEL  
12. 5D-0353 [4] BOLT  
  5L-8938 [1] PLATE  
13. 3N-1211 [3] SHAFT ASSEM.  
14. 2D-6642 [2] BALL  
 

#SEBP14640025
 

6T-0978: PLANETARY GP

6T978 PLANETARY GROUP-3.25:1 RATIO
c309901 SEBP1464
6T0978 PLANETARY GP Parts scheme
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Parts for your 7251 MARINE TRANSMISSION:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4L-8300 [6] WASHER-RETAINING  
2. 6L-6180 [3] BEARING AS-ROLLER  
3. 6T-0969 [3] GEAR-PLANETARY (30 TEETH)  
4. 3T-5938 [1] SHAFT AS-GEAR SUN  
  4K-8603 [1] PLUG-CUP  
5. 2N-2983 [1] TUBE-OIL TRANSFER  
6. 6T-0968 [1] GEAR-SUN (48 TEETH)  
7. 5L-8932 [1] SPACER  
8. 9G-7914 [1] GEAR-RING (108 TEETH)  
9. 5K-9107 [9] BOLT-SELF LOCKING  
10. 2N-4642 [3] PLATE-RETAINING  
11. 7L-6970 [1] CARRIER AS  
  6F-0984 [3] DOWEL  
12. 5D-0353 [4] BOLT-SELF LOCKING  
  5L-8938 [1] PLATE-THRUST  
13. 3N-1211 [3] SHAFT AS-PLANETARY  
14. 2D-6642 [2] BALL  
 

#SEBP14640026
 

6T-3458: CLUTCH GP

6T3458 CLUTCH GROUP
c314737 SEBP1464
6T3458 CLUTCH GP Parts scheme
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Parts for your 7251 MARINE TRANSMISSION:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6T-2705 [1] SHAFT AS  
2. 7M-7410 [1] PLUG  
3. 2N-6272 [1] DOWEL  
4. 5L-9168 [1] PLUG  
5. 5L-7132 [1] TUBE AS-CLUTCH PRESSURE  
  5L-7135 [1] SLEEVE  
6. 5L-7135 [1] SLEEVE  
7. 2K-9092 [6] RING-METAL SEAL  
8. 3B-1915 [4] BOLT  
  5M-2894 [4] WASHER  
9. 5L-6896 [1] RETAINER-BEARING  
10. 1H-7005 [1] BALL BEARING  
11. 6T-3821 [1] PLATE-PRESSURE  
12. 4L-4345 [18] STUD-TAPERLOCK  
13. 3T-9848 [2] RING (72 TEETH)  
14. 2J-6356 [12] RING-RETAINING  
15. 3B-9363 [12] WASHER  
16. 5L-6063 [12] SPRING-CLUTCH PISTON  
17. 1M-0552 [2] RING-METAL SEAL  
  5S-7834 A [2] RING  
    .38MM(.015IN.) OVERSIZE
  6P-8259 A [2] RING  
    .76MM(.030IN.) OVERSIZE
18. 6T-3470 [2] PISTON AS  
    (EACH INCLUDES)
19. 5L-6064 [6] PIN-PISTON GUIDE  
20. 2S-6443 [2] RING-SEALING  
  6P-8268 A [2] RING  
    .38MM(.015IN.) OVERSIZE
  9P-2946 A [2] RING  
    .76MM(.030IN.) OVERSIZE
21. 1D-4719 [18] NUT  
  5P-8245 [18] WASHER  
22. 1L-7205 [1] BALL BEARING  
23. 5L-3325 [1] SPACER-BEARING  
24. 8M-4987 [2] SEAL-O-RING  
25. 6T-2707 [1] GASKET  
26. 4L-1337 [1] RETAINER-SHAFT  
27. 6T-3469 [1] SPIDER AS  
28. 5B-7652 [2] DOWEL  
29. 5N-3343 [8] DISC-FRICTION  
30. 1N-7607 [6] PLATE  
31. 6T-3471 [1] CYLINDER AS-CLUTCH  
  1H-0974 [2] DOWEL  
    12.7MM(.5IN.)LONG
32. 5B-7652 [2] DOWEL  
    15.875MM(.625IN.)LONG
33. 3K-5762 [1] PLUG  
34. 2D-1523 [2] RING-RETAINING  
35. 5L-5143 [2] PLUNGER-VALVE  
36. 5L-5144 [2] BODY-DUMP VALVE  
37. 2N-4620 [42] BLOCK-RUBBER  
38. 5P-0076 [2] BOLT-12 POINT HEAD  
  3V-2431 [2] WASHER  
39. 2N-6272 [1] DOWEL  
40. 3T-9335 [1] SLEEVE  
  A   NOT PART OF THIS GROUP
 

#SEBP14640027
 

5N-5156: GEAR GP-TRANSFER

5N5156 TRANSFER GEAR GROUP
c172833 SEBP1464
5N5156 GEAR GP-TRANSFER Parts scheme
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Parts for your 7251 MARINE TRANSMISSION:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1N-8609 [1] GEAR (48 teeth)  
2. 4L-1256 [1] GEAR (64 teeth)  
3. 4L-1257 [1] GEAR (64 teeth)  
4. 1N-8610 [1] GEAR (48 teeth)  
5. 1N-9091 [1] GEAR (46 teeth)  
 

#SEBP14640028
 

5N-5155: GEAR GP-TRANSFER

5N5155 TRANSFER GEAR GROUP
c171858 SEBP1464
5N5155 GEAR GP-TRANSFER Parts scheme
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Parts for your 7251 MARINE TRANSMISSION:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1N-8609 [1] GEAR (48 teeth)  
2. 6L-7516 [1] GEAR (67 teeth)  
3. 6L-7520 [1] GEAR (61 teeth)  
4. 1N-8610 [1] GEAR (48 teeth)  
5. 1N-9091 [1] GEAR (46 teeth)  
 

#SEBP14640029
 

7T-0673: VALVE GP-CONTROL

7T673 VALVE GROUP-CONTROL
7T672 VALVE PARTS ARE SHOWN ON PAGE 26
c314775 SEBP1464
7T0673 VALVE GP-CONTROL Parts scheme
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Parts for your 7251 MARINE TRANSMISSION:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5L-7366 [1] STUD-BALL  
2. 1A-8285 C [1] NUT-JAM  
3. 1J-1971 C [1] PIN-CLEVIS  
4. 3B-4617 [1] COTTER  
5. 7T-0672 [1] VALVE GP-CONTROL  
6. 5F-4899 [5] BOLT  
  5M-2894 [5] WASHER  
7. 1N-8581 Y [1] GASKET-VALVE  
8. 2F-7743 [1] SPRING  
9. 6T-6545 [1] LEVER AS  
10. 4B-9880 [2] BALL  
11. 5M-6213 [2] PLUG  
12. 3L-6521 [1] TEE-SERVICE  
  C   CHANGE FROM PREVIOUS TYPE
  Y   SEPARATE ILLUSTRATION
 

Information:

Engine News
Drive Block Retainer Plates Are No Longer Used
1984/01/18
Two New High Speed Marine Transmissions Can Be Used With 3500 Series Engines
1984/08/22
New Transmission Control Valve And Pressure Relief Valve Are Used With High Flow Oil Pump
1985/03/01
New Main Shaft Bearing Assembly Has Reduced End Play
1985/04/01
Improved Clutch Disc And Cooling Oil Flow
1986/01/01
New Oil Viscosity Recommendations For All 7200 Series Marine Transmissions
1986/02/01
2N4620 Rubber Drive Block Reinstated For Parts Service
1990/03/01
Service Magazine
Two New High Speed Marine Transmissions Can Be Used With 3500 Series Engines{3302,3306,3351}
1984/08/20
New Transmission Control Valve And Pressure Relief Valve Are Used With High Flow Oil Pump{3313,3310}
1985/02/18
New Main Shaft Bearing Assembly Has Reduced End Play{3306}
1985/03/25
Improved Clutch Disc And Cooling Oil Flow{3300,3302,3303,3306}
1985/12/16
New Oil Viscosity Recommendations For All 7200 Series Marine Transmissions{3351}
1986/02/03
New Oil Pump Used As Service Replacement{3310}
1992/11/30

Caterpillar Parts SIS Catalog 7251 :

SHAFT GP-MAIN
4L-4319 SHAFT GP-MAIN
HOUSING GP-MARINE TRANSMISSION
3T-4974 HOUSING GP-MARINE TRANSMISSION
HOUSING GP-MARINE TRANSMISSION
9G-6767 HOUSING GP-MARINE TRANSMISSION
HOUSING GP-MARINE TRANSMISSION
9G-6767 HOUSING GP-MARINE TRANSMISSION
HOUSING GP-MARINE TRANSMISSION
9G-6767 HOUSING GP-MARINE TRANSMISSION
HOUSING GP-MARINE TRANSMISSION
9G-6767 HOUSING GP-MARINE TRANSMISSION
HOUSING GP-OUTPUT
4L-4314 HOUSING GP-OUTPUT
HOUSING GP-OUTPUT
4L-4314 HOUSING GP-OUTPUT
SHAFT GP-LOWER
9G-6768 SHAFT GP-LOWER
SHAFT GP-OUTPUT
3N-7064 SHAFT GP-OUTPUT
PLANETARY GP
2N-2772 PLANETARY GP
PLANETARY GP
9G-7913 PLANETARY GP
PLANETARY GP
6T-0978 PLANETARY GP
CLUTCH GP
6T-3458 CLUTCH GP
GEAR GP-TRANSFER
5N-5156 GEAR GP-TRANSFER
GEAR GP-TRANSFER
5N-5155 GEAR GP-TRANSFER

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