Before/After
| PRODUCT SUPPORT PROGRAM FOR REWORKING THE BRAKE MANIFOLD BRACKET ASSEMBLY MOUNTING ON CERTAIN 794 AC OFF-HIGHWAY TRUCKS |
7755 5057 4257 1380 1374
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PS46050 |
NOTE: |
Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.
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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 "PS46050" 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. |
The existing 442-3363 Brake Manifold Bracket Assembly mounting can fail on certain 794 AC Off-Highway Trucks. |
Qty |
Part Number |
Description |
4 |
8T4956 |
BOLT-HEX HEAD |
4 |
9R3572 |
BOSS |
4 |
1984778 |
WASHER-HARD |
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 22% 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.
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1. Inspect and replace the 442-3363 Bracket Assembly mounting. Refer to the Disassembly and Assembly for your machine. Disassemble/assemble the brake oil cooling lines group components as required to complete Steps 2 and 3.
2. Replace the four 442-3363 Bracket Assembly mounting bosses on the front axle with four new 9R-3572 Bosses (1). Use the bracket assembly as a template to help locate new 9R-3572 Bosses (1). Weld the four bosses all around with 5mm (0.20in) fillet weld.
3. Secure the 442-3363 Bracket Assembly to four 9R-3572 Bosses (1) using four new 8T-4956 Bolts and four new 198-4778 Washers. Tighten the bolts to a specified torque of 100 +/- 20 N.m (74 +/- 15 lb. ft).
Note: The slots on the bracket assembly must be enlarged to accept the new bolts. |
Product smu/age whichever comes first |
Caterpillar |
Dealer Suggested |
Customer Suggested |
Parts % |
Labor Hrs% |
Parts % |
Labor Hrs% |
Parts % |
Labor Hrs% |
0-40000 hrs, 0-72 mo |
100.0% |
100.0% |
0.0% |
0.0% |
0.0% |
0.0% |
NOTE: This is a 3.0-hour job
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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling. |
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