Before/After
| PRODUCT SUPPORT PROGRAM FOR INSTALLING A NEW HYDRAULIC TANK COVER ON CERTAIN 770, 770 OEM, 772, 773F, AND 775F OFF HIGHWAY TRUCKS |
5056 |
PS42814 |
NOTE: |
This Program must be administered either before or after failure.
In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS42814" as the Part Number
and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code.
If administered after failure, use "96" as the Warranty Claim Description Code, and "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. |
|
NOTE: |
This Revised Service Letter replaces the 23Oct2008 (Revised 21Nov2008) Service Letter. Changes have been made to rework instructions to include the removal components installed on the old tank cover that should be reinstalled on the new tank cover. |
The existing sight gauge on certain 770, 770 OEM, 772, 773F, and 775F Off Highway Trucks was positioned incorrectly. A new tank design (Type 2) was introduced with the sight gauge in the correct location. In order to fill the original tank (Type 1) properly, the machine must be allowed to cool down to ambient temperature and then filled to the hot level indicator instead of the cold level indicator. The hydraulic system will function properly with a Type 1 tank filled using this procedure.
Type 1 and Type 2 tanks can be differentiated by comparing the upper sight gauge and fill neck locations. The upper sight gauges and fill neck have been raised on the Type 2 tank to be as illustrated in Image 1 in the Action Required. |
Qty |
Part Number |
Description |
*******Group 1*******
|
1 |
4J8251 |
GROMMET |
6 |
5H6005 |
SEAL-O RING |
1 |
6J1080 |
GROMMET |
1 |
2381825 |
GASKET |
1 |
2814551 |
COVER AS. |
1 |
S_B_7837 |
OPERATION AND MAINTENANCE MANUAL (SEE NOTE BELOW) |
NOTE: When ordering Operation and Maintenance Manual S_B_7837, verify that it is version -06 or later.
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 23% 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*******
|
1 |
4J8251 |
GROMMET |
6 |
5H6005 |
SEAL-O RING |
1 |
6J1080 |
GROMMET |
1 |
2381825 |
GASKET |
1 |
2814551 |
COVER AS. |
1 |
S_B_7837 |
OPERATION AND MAINTENANCE MANUAL (SEE NOTE BELOW) |
NOTE: When ordering Operation and Maintenance Manual S_B_7837, verify that it is version -06 or later.
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 23% 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*******
|
1 |
4J8251 |
GROMMET |
6 |
5H6005 |
SEAL-O RING |
1 |
6J1080 |
GROMMET |
1 |
2381825 |
GASKET |
1 |
2814551 |
COVER AS. |
1 |
S_B_7794 |
OPERATION AND MAINTENANCE MANUAL (SEE NOTE BELOW) |
NOTE: When ordering Operation and Maintenance Manual S_B_7794, verify that it is version -05 or later.
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 23% 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. |
A new cover has been released with a repositioned sight gauge. The existing tank cover should be removed and replaced with the new tank cover with the sight gauge correctly positioned.
Install a new Operation and Maintenance Manual containing the correct maintenance requirements for the Type 2 tank in the customers machine.
This is the Permanent Corrective Action for this issue. This service letter program supersedes the previous Interim Corrective Action service letter program, PI31472. |