After Failure Only
| PRODUCT SUPPORT PROGRAM FOR REPLACING CYLINDER HEADS OR VALVE SPRINGS, KEEPERS, AND ROTATORS ON CERTAIN 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, AND 3516C MARINE ENGINES |
| 1100 1108 1101 |
PS51650 |
| NOTE: |
This Program can only be administered after a failure occurs.
The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS51650" as the Part Number
and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code. |
| NOTE: |
The information supplied in this service letter may not be valid after the termination date of this program.
Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst. |
| The existing outer valve spring can fail on various 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, and 3516C marine engines. |
Qty |
Part Number |
Description |
|
*******Group 1*******
|
| 32 |
2A4429 |
LOCK-RETAINER |
| 32 |
1977055 |
LOCK-RETAINER |
| 32 |
3165976 |
SPRING |
| 32 |
3165977 |
SPRING-VALVE |
| 16 |
3165978 |
ROTOCOIL AS |
| 16 |
3165979 |
ROTOCOIL AS |
| 16 |
3165980 |
SEAL |
| 16 |
3165981 |
WASHER |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 3% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer. |
|
*******Group 2*******
|
| 8 |
10R2003 |
HEAD GP-CYL BSC |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 3% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer. |
|
*******Group 3*******
|
| 8 |
10R7765 |
HEAD GP-CYL |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 3% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer. |
|
*******Group 4*******
|
| 48 |
2A4429 |
LOCK-RETAINER |
| 48 |
1977055 |
LOCK-RETAINER |
| 48 |
3165976 |
SPRING |
| 48 |
3165977 |
SPRING-VALVE |
| 24 |
3165978 |
ROTOCOIL AS |
| 24 |
3165979 |
ROTOCOIL AS |
| 24 |
3165980 |
SEAL |
| 24 |
3165981 |
WASHER |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 3% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer. |
|
*******Group 5*******
|
| 12 |
10R2003 |
HEAD GP-CYL BSC |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 3% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer. |
|
*******Group 6*******
|
| 12 |
10R7765 |
HEAD GP-CYL |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 3% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer. |
|
*******Group 7*******
|
| 64 |
2A4429 |
LOCK-RETAINER |
| 64 |
1977055 |
LOCK-RETAINER |
| 64 |
3165976 |
SPRING |
| 64 |
3165977 |
SPRING-VALVE |
| 32 |
3165978 |
ROTOCOIL AS |
| 32 |
3165979 |
ROTOCOIL AS |
| 32 |
3165980 |
SEAL |
| 32 |
3165981 |
WASHER |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 3% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer. |
|
*******Group 8*******
|
| 16 |
10R2003 |
HEAD GP-CYL BSC |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 3% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer. |
|
*******Group 9*******
|
| 16 |
10R7765 |
HEAD GP-CYL |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 1% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer. |
Refer to the appropriate service manual as necessary.
There are two different repair actions in this program depending if there is a remanufactured cylinder head available for the engine. The Affected Product and Associated Parts Needed have been divided into groups specific to the repair.
No Remanufactured Cylinder Heads Available:
If a broken outer valve spring is found, all of the valve spring packs on the engine should be replaced. New inner and outer springs, rotators, exhaust valve spring washers, and inlet valve stem seals and keepers should be used when reassembling.
Refer to the appropriate Service Manual as necessary for on-engine valve spring replacement procedure.
Remanufactured Cylinder Head Available:
For engines with a remanufactured cylinder head available, replace the existing cylinder head on each cylinder with a remanufactured cylinder head. This work should be completed only after inspecting the top end and determining no other engine damage has occurred.
NOTE: If the valve has made piston contact the cylinder pack and cylinder head should be replaced. |