PRODUCT SUPPORT PROGRAM FOR REWORKING ALL INNER BOLTS MAINTAINING THE SWING GEAR BEARING ON THE CARBODY ON CERTAIN 385C FS, 390D, AND 390F EXCAVATORS
Usage:
TEBE0721-00
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| 17Apr2014 |
U-206
A-154
D-187
O-177
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| After Failure Only | PRODUCT SUPPORT PROGRAM FOR REWORKING ALL INNER BOLTS MAINTAINING THE SWING GEAR BEARING ON THE CARBODY ON CERTAIN 385C FS, 390D, AND 390F EXCAVATORS |
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| 7063 | PS52646 |
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| 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 "PS52646" 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 |
| 30Apr2015 |
PROBLEM
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| The existing inner swing gear bolts do not have a correct clamping load on certain 385C, 390D, and 390F Excavators. |
AFFECTED PRODUCT
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| Model | Identification Number |
| 385C FS | EAM00325-00332 MMA00294-00303 |
| 390D | BYP00128-00139 KCZ00168-00180 |
| 390D L | WAG00199-00252 WAP00377-00582 WBT00212-00301 |
| 390D L OEM | M1M00107-00110 |
| 390F L | MGF00151-00155 |
PARTS NEEDED
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Qty |
Part Number | Description |
| 74 | 1994502 | BOLT-HEX HEAD |
| 74 | 4531667 | SPACER |
| In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 1% 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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| The inner swing gear bolts need to be inspected, and if needed, replaced. Refer to TEBE0708 service letter "PRODUCT IMPROVEMENT PROGRAM FOR REWORKING ALL INNER BOLTS MAINTAINING THE SWING GEAR BEARING ON THE CARBODY ON CERTAIN 390D EXCAVATORS", before proceeding with this rework procedure . After inspection of the potential swing gear bearing movement on the carbody and if a movement between both components is found, continue with the following Rework Procedure. |
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SERVICE CLAIM ALLOWANCES
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0-36 mo |
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| NOTE: This is a 44.0-hour job | ||||||
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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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| 1. Remove the swing bearing. Refer to KENR6408, Disassembly and Assembly, "Swing Gear and Bearing - Remove", for additional instructions. Note: When re-installing the swing bearing you must follow the instructions below for the assembly. Refer to KENR6408, Disassembly and assembly, "Swing Gear and Bearing - Install", for additional instructions. |
| 2. After removing the swing bearing, check the mating surface and threads of the carbody, if they are all ok, continue the procedure. 3. Degrease the swing bearing face receiving the spacers with a suitable solvent or degreaser. |
| 4. Only the new 199-4502 Bolts and 453-1667 Spacers must be used. Refer to Image1.3.1 to identify the two types of bolts allowed for this rework. Before installation of the new components, degreasing of the components could be needed to clean bolts and spacers. Use a suitable solvent or degreaser. |
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| Image1.3.1 |
| 5. Once dry, apply 5P-3931 Antiseize on the bolt threads. 6. Tighten the bolts to a specified pre-torque of 450 N.m +/- 50 plus an angle of 90 degrees +/- 5. |
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