PRODUCT SUPPORT PROGRAM FOR REPLACING THE MAIN CONTROL VALVE CENTERING SPRING ON CERTAIN 814K WHEEL DOZERS, 815K SOIL COMPACTORS, AND 816K LANDFILL COMPACTORS
Usage:
TEBE7778-00
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| 04Jul2018 |
U-375
A-279
D-328
O-338
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| After Failure Only | PRODUCT SUPPORT PROGRAM FOR REPLACING THE MAIN CONTROL VALVE CENTERING SPRING ON CERTAIN 814K WHEEL DOZERS, 815K SOIL COMPACTORS, AND 816K LANDFILL COMPACTORS |
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| 5051 | PS53791 |
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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 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 "PS53791" 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. |
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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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TERMINATION DATE |
| 31Jul2020 |
PROBLEM
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| The existing centering springs in the main control valve may fail on certain 814K Wheel Dozers, 815K Soil Compactors, and 816K Landfill Compactors. |
AFFECTED PRODUCT
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| Model | Identification Number |
| 814K | WCM00100 |
| 815K | MBB00202-00203, 301-324 WCS00100, 201-207 |
| 816K | WCL00100-00105 WNB00101-00103, 201-224 |
PARTS NEEDED
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Qty |
Part Number | Description |
| 1 | 5297729 | SPRING-SPOOL |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 2% 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 M0090627, Disassembly and Assembly, 814K Wheel Dozer Machine Systems, "Main Control Valve - Disassemble" and "Main Control Valve - Assemble". Refer to M0068544, Disassembly and Assembly, 815K, 816K Soil Compactor Machine Systems, "Main Control Valve - Disassemble" and "Main Control Valve - Assemble". Refer to the table in Image1 for the main control valve part numbers. Refer to Image2 for an example of a typical main control valve cross-section. If the existing centering spring fails, replace the failed spring with a new 529-7729 Spool Spring. 1. Access the main control valve and clean the area. Do NOT remove the main control valve from the machine. 2. Remove the cap from the main control valve. 3. Remove the directional stem from the main control valve. NOTE: Use a clean, lint-free, towel to handle the directional stem assembly. Do NOT damage the directional stem running surfaces. 4. Disassemble the directional stem. Replace the broken spring with a new 529-7729 Spool Spring. 5. Assemble the directional stem assembly. Tighten to 8 +/- 0.5 N.m (5.9 +/- 0.4 lb. ft). 6. Clean the directional stem assembly as needed and install in the main control valve. 7. Install the end cap on the main control valve. Tighten the bolts to a specified torque of to 8 +/- 0.5 N.m (5.9 +/- 0.4 lb. ft). NOTE: Ensure proper orientation and alignment of the directional stem assembly and end cap. Refer to Image2. |
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| Image1 |
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| Image2 |
SERVICE CLAIM ALLOWANCES
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0-36 mo |
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37-48 mo |
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| NOTE: This is a 4.0-hour job
If there has been a previous repair, part age/hours will apply. Retain a copy of the previous repair invoice in the dealer's records for audit purposes, and specify repair date and machine hours in the "Additional Comments" section of the warranty claim. |
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| Note: Up to $100 US Dollars is allowed for lost oil. |
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PARTS DISPOSITION
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| Handle the parts in accordance with your Warranty Bulletin on warranty parts handling. |
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