PRODUCT SUPPORT PROGRAM FOR REPLACING THE PLUGS ON THE CONTROL VALVE ON CERTAIN 320C AND 320C L EXCAVATORS
Usage:
SEBE8024
June 20, 2002
AU-101
S-101
H-100
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PRODUCT SUPPORT PROGRAM FOR REPLACING THE PLUGS IN THE CONTROL VALVE ON CERTAIN 320C AND 320C L EXCAVATORS |
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| 5051 |
PS90103
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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.
Termination Date
June 30, 2003PROBLEM
The plugs in the control valve need to be replaced on certain 320C and 320C L Excavators. The plugs on the left side of the 1588202 Control Valve may loosen and leak. These plugs need to be cleaned up and resealed or replaced.AFFECTED PRODUCT
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| Model | Identification Number |
| 320C |
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| 320C L |
BRX216-423, 425-426, 433-472 |
PARTS NEEDED
1 - 3D2824 Seal - O-Ring2 - 4K1388 Seal - O-Ring
1 - 7M8485 Seal - O-Ring
1 - 1535294 Plug (on Stick re-generation valve)
1 - 1588140 Plug (on Stick I valve)
1 - 2019261 Plug (parts manual shows 6E5730 on swing valve)
1 - 2019262 Plug (parts manual shows 6E5644 on Boom II valve)
ACTION REQUIRED
See the attached Rework Procedure.SERVICE CLAIM ALLOWANCES
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PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.Attach. (1-Rework Procedure)
Rework Procedure
- Remove the following four plugs with seals showing on the drawing:
- Clean thoroughly the threads of both plugs and mating control valve bores and make sure no spatters or burr is present
- Replace the plugs using the new seals if necessary and retighten to specs:
6E5730 (4K1388): Swing port
6E5644 (4K1388): Boom 2 port
1588140 (7M8485): Stick 1 port
1535294 (3D2824): Stick re-generation port
285 +/- 30 N.m for 1588140
175 +/- 15 N.m for 1535294
235 +/- 25 N.m for 2019261 and 2019262.
Caterpillar Information System:
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