PRODUCT SUPPORT PROGRAM FOR INSTALLING THE SOFT UNLOADER VALVE ON CERTAIN 797B OFF-HIGHWAY TRUCKS
Usage:
TEBE5544-04
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| 06Feb2017 |
| (Revised 06Mar2018) |
N030
N184
N18C
R120
T030
T035
Z800
Z850
N184
N18C
R120
T030
T035
Z800
Z850
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| Before/After (Limited distribution) | PRODUCT SUPPORT PROGRAM FOR INSTALLING THE SOFT UNLOADER VALVE ON CERTAIN 797B OFF-HIGHWAY TRUCKS |
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| 4251 5056 5057 4257 | PS45382 |
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| 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. |
| 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 "PS45382" 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. |
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| 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. |
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| NOTE: | This Revised Service Letter replaces the 06Feb2017 (Revised 05Dec2017) Service Letter. Changes have been made to the Parts Needed. |
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TERMINATION DATE |
| 28Feb2019 |
PROBLEM
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| The existing 3779933/">377-9933 Tube Assembly or 322-6458 Hose Assembly can fail due to surging within the hydraulic system on certain 797B Off-Highway Trucks. If the existing tube assembly fails it will cause increased brake temperatures. If the existing 322-6458 hose assembly fails, it will cause a leak. |
AFFECTED PRODUCT
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| Model | Identification Number |
| *******Group 1******* | |
| 797B | JSM00124, 134, 165-175, 177-178, 180-190, 232-234, 240, 245, 247-250, 257, 292-295, 297, 299-301, 318-319, 354-357, 366-368, 383-384, 391-392, 396-397, 403, 410-411, 414, 416-417, 419-421, 423, 425, 427, 429, 431, 433, 442, 444-445, 452, 454-455, 458-460, 463-471, 473-475 |
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| *******Group 2******* | |
| 797B | JSM00123, 127-128, 130-131, 135-136, 139-142, 144-149, 151-164, 191-194, 206-212, 216-217, 219-228, 236-238, 244, 246, 256, 259-261, 265-267, 274, 276-286, 296, 298, 302-303, 308, 311-317, 320-332, 338-353, 364-365, 369-382, 386-389, 393-395, 398-402, 404-409, 412-413, 415, 418, 422, 424, 426, 428, 430, 432, 434-439, 446-451, 453, 456-457, 461-462, 472, 476-488 |
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| *******Group 3******* | |
| 797 | 5YW00197-00201, 203-209, 213-218, 221-222, 240, 244-250, 254-257, 260-269 |
PARTS NEEDED
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Qty |
Part Number | Description |
| *******Group 1******* | ||
| 1 | 6V0852 | CAP-DUST |
| 1 | 6V3965 | ADAPTER-STR |
| 1 | 6V8076 | ADAPTER-ELBOW |
| 1 | 6V8723 | ADAPTER-ELBOW |
| 1 | 6V8724 | ADAPTER-ELBOW 90 |
| 1 | 6V9008 | ADAPTER-ELBOW |
| 1 | 7X2459 | ADAPTER-TEE |
| 1 | 8C3364 | ADAPTER-ELBOW |
| 2 | 8C6515 | ADAPTER-TEE |
| 1 | 8T1905 | ADAPTER-ELBOW |
| 2 | 8T4121 | WASHER-HARD |
| 2 | 8T4172 | BOLT-HEX HEAD |
| 4 | 8T4183 | BOLT-HEX HEAD |
| 1 | 1023437 | ADAPTER-ELBOW |
| 1 | 1508686 | FLANGE |
| 5 | 2147568 | SEAL-O-RING-STOR |
| 5 | 2287089 | SEAL-O-RING-ORFS |
| 4 | 2287093 | SEAL-O-RING-ORFS |
| 1 | 2287094 | SEAL-O-RING-ORFS |
| 2 | 2287095 | SEAL-O-RING-ORFS |
| 1 | 2343544 | SEAL-O-RING |
| 1 | 2385080 | SEAL-O-RING-STOR |
| 4 | 2385084 | SEAL-O-RING-STOR |
| 1 | 2501457 | ADAPTER-TEE |
| 1 | 2633890 | PLUG-CAVITY |
| 1 | 3779933 | TUBE AS (After Failure Only) |
| 1 | 3978133 | VALVE GP-CHECK-E |
| 1 | 4218059 | PLATE |
| 1 | 4434565 | HOSE AS |
| 1 | 5021274 | HOSE AS |
| 1 | 5092738 | HOSE AS |
| 1 | 5211017 | HOSE AS |
| 1 | 5211020 | HOSE AS |
| 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. |
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| *******Group 2******* | ||
| 1 | 6V0852 | CAP-DUST |
| 1 | 6V3965 | ADAPTER-STR |
| 1 | 6V8076 | ADAPTER-ELBOW |
| 1 | 6V8723 | ADAPTER-ELBOW |
| 1 | 6V8724 | ADAPTER-ELBOW 90 |
| 1 | 6V9008 | ADAPTER-ELBOW |
| 1 | 7X2459 | ADAPTER-TEE |
| 1 | 8C3364 | ADAPTER-ELBOW |
| 2 | 8C6515 | ADAPTER-TEE |
| 1 | 8T1905 | ADAPTER-ELBOW |
| 2 | 8T4121 | WASHER-HARD |
| 2 | 8T4172 | BOLT-HEX HEAD |
| 4 | 8T4183 | BOLT-HEX HEAD |
| 1 | 1023437 | ADAPTER-ELBOW |
| 1 | 1508686 | FLANGE |
| 5 | 2147568 | SEAL-O-RING-STOR |
| 5 | 2287089 | SEAL-O-RING-ORFS |
| 4 | 2287093 | SEAL-O-RING-ORFS |
| 1 | 2287094 | SEAL-O-RING-ORFS |
| 2 | 2287095 | SEAL-O-RING-ORFS |
| 1 | 2343544 | SEAL-O-RING |
| 1 | 2385080 | SEAL-O-RING-STOR |
| 4 | 2385084 | SEAL-O-RING-STOR |
| 1 | 2501457 | ADAPTER-TEE |
| 1 | 2633890 | PLUG-CAVITY |
| 1 | 3779933 | TUBE AS (After Failure Only) |
| 1 | 3978133 | VALVE GP-CHECK-E |
| 1 | 4218059 | PLATE |
| 1 | 4434565 | HOSE AS |
| 1 | 5021274 | HOSE AS |
| 1 | 5092738 | HOSE AS |
| 1 | 5211017 | HOSE AS |
| 1 | 5211020 | HOSE AS |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 16% 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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| *******Group 3******* | ||
| 1 | 6V0852 | CAP-DUST |
| 1 | 6V3965 | ADAPTER-STR |
| 1 | 6V8076 | ADAPTER-ELBOW |
| 1 | 6V8723 | ADAPTER-ELBOW |
| 1 | 6V8724 | ADAPTER-ELBOW 90 |
| 1 | 6V9008 | ADAPTER-ELBOW |
| 1 | 7X2459 | ADAPTER-TEE |
| 1 | 8C3364 | ADAPTER-ELBOW |
| 2 | 8C6515 | ADAPTER-TEE |
| 1 | 8T1905 | ADAPTER-ELBOW |
| 2 | 8T4121 | WASHER-HARD |
| 2 | 8T4172 | BOLT-HEX HEAD |
| 4 | 8T4183 | BOLT-HEX HEAD |
| 1 | 1023437 | ADAPTER-ELBOW |
| 1 | 1508686 | FLANGE |
| 5 | 2147568 | SEAL-O-RING-STOR |
| 5 | 2287089 | SEAL-O-RING-ORFS |
| 4 | 2287093 | SEAL-O-RING-ORFS |
| 1 | 2287094 | SEAL-O-RING-ORFS |
| 2 | 2287095 | SEAL-O-RING-ORFS |
| 1 | 2343544 | SEAL-O-RING |
| 1 | 2385080 | SEAL-O-RING-STOR |
| 4 | 2385084 | SEAL-O-RING-STOR |
| 1 | 2501457 | ADAPTER-TEE |
| 1 | 2633890 | PLUG-CAVITY |
| 1 | 3978133 | VALVE GP-CHECK-E |
| 1 | 4218059 | PLATE |
| 1 | 4398426 | TUBE AS (After Failure Only) |
| 1 | 4434565 | HOSE AS |
| 1 | 5021274 | HOSE AS |
| 1 | 5092738 | HOSE AS |
| 1 | 5211017 | HOSE AS |
| 1 | 5211020 | HOSE AS |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 15% 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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ACTION REQUIRED
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| Refer to the OM&M as necessary prior to performing repairs. Verify brake accumulators have been properly discharged before starting repairs. Reference SEBU7651 - System Pressure Release. Update the hydraulic system per M0077324. If: M0077499, "Procedure to Install the Improved Power Controls Inlet Lines and Brake Control Lines Group on Certain 797B Off-Highway Trucks" and Special Instruction and M0077494, "Procedure to Improve the Brake Oil Return Lines and Brake Oil Filter Manifold on Certain 797 Off-Highway Trucks". have not been applied to the machine, clipping of the hoses may not match what is described in M0077324. Note within the service claim any additional parts that are required to properly secure the hoses in order to claim to this program. ***Note: The 3779933/">377-9933 tube assembly replaced the former 212-6156 tube assembly (reference M0074789). If the machine is still equipped with the former tube assembly, this program may be used to upgrade the hydraulic tank to the 3779933/">377-9933 tube assembly. **Note: This program does not cover the parts or labor required to upgrade and/or repair the 378-3447 Tube Assembly, 439-8429 Tube Assembly, 174-3653 Tube Assembly or the 212-6155 Tube Assembly. ***Note: Planned repair coordinated with a hydraulic oil change will minimize the amount of labor required. |
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SERVICE CLAIM ALLOWANCES
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