Before/After
(Limited distribution)
| PRODUCT SUPPORT PROGRAM FOR REPLACING THE PISTONS ON CERTAIN 793F OFF-HIGHWAY TRUCKS |
1214
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PS46554 |
NOTE: |
AVSpare’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 AVSpare.
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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 "PS46554" 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 AVSpare product analyst. |
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NOTE: |
This Revised Service Letter replaces the 22Jan2020 (Revised 27Jan2020) Service Letter. Changes have been made to the Parts Needed. |
Pistons installed in certain C175-16 Engines may crack on certain 793F Off-Highway Trucks. |
Qty |
Part Number |
Description |
4 |
3P0656 |
SEAL-O-RING |
24 |
5H6733 |
SEAL-O-RING |
1 |
5P4057 |
SEAL-O RING |
4 |
6V1196 |
SEAL-O-RING |
1 |
6V3968 |
SEAL-O-RING |
16 |
8T0106 |
BOLT-HEX HEAD |
1 |
8T0372 |
BOLT |
8 |
20R2805 |
ROD GP-CONN |
8 |
20R2806 |
ROD GP-CONN |
1 |
1076280 |
SEAL-O-RING |
1 |
1776911 |
SEAL-O-RING |
16 |
2153198 |
SEAL-FUEL SYSTEM |
64 |
2287089 |
SEAL-O-RING-ORFS |
1 |
2300940 |
SEAL-PIP |
32 |
2531238 |
RETAINER-PIN |
32 |
2539950 |
SEAL-O-RING |
16 |
2542054 |
RING-PISTON-OIL |
16 |
2589925 |
GASKET-COMB |
16 |
2589926 |
GASKET |
4 |
2697885 |
SEAL-O-RING |
16 |
2868928 |
RING-PISTON |
4 |
3449285 |
RING |
16 |
3618205 |
SEAL-FUEL SYSTEM |
16 |
3618206 |
SEAL-FUEL SYSTEM |
16 |
3618207 |
SEAL-FUEL SYSTEM |
16 |
3708028 |
SEAL-INTEGRAL |
16 |
3766458 |
BEARING-CONN ROD |
16 |
3813969 |
SLEEVE |
1 |
3917216 |
SEAL-PIP |
1 |
3917217 |
SEAL-PIP |
16 |
3924608 |
PIN-PISTON |
32 |
4226176 |
SEAL-O-RING |
4 |
4435940 |
BELLOWS AS |
16 |
4714230 |
LINER-CYLINDER |
16 |
4772235 |
PISTON AS |
16 |
4772236 |
RING-PISTON |
8 |
4906439 |
CLAMP |
32 |
4983113 |
INSERT-BOLT |
2 |
5216093 |
ELEMENT-LUBE OIL |
28 |
5247818 |
SEAL-O-RING |
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 32% 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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Replace all of the 477-2237 Pistons and related components with 477-2235 Pistons.
Refer to Disassembly and Assembly, M0080117 for cylinder pack removal and installation. |
Product smu/age whichever comes first |
AVSpare |
Dealer Suggested |
Customer Suggested |
Parts % |
Labor Hrs% |
Parts % |
Labor Hrs% |
Parts % |
Labor Hrs% |
0-25000 hrs, 0-48 mo |
100.0% |
100.0% |
0.0% |
0.0% |
0.0% |
0.0% |
NOTE: This is a 240.0-hour job
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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling. |
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