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PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK Caterpillar


PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK

Usage:

REBE4592-01

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11Nov2008
(Revised 12Nov2008)


U-569
A-473
D-485
O-524

 
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Parts stock action only
  
  

PRODUCT IMPROVEMENT PROGRAM FOR REMOVING 7Y-4945 AND 087-5550 BACK-UP RINGS FROM DEALER PARTS STOCK
5457 7750
PI70279
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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 11Nov2008 Service Letter. Changes have been made to kit part number in the Action Required.

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TERMINATION DATE
28Feb2009

PROBLEM

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Certain 7Y-4945 and 087-5550 Back-Up Rings need to be removed from dealer parts stock. These back-up rings in dealer parts stock that are white in color are more prone to failure in the field.

ACTION REQUIRED

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Inspect all 7Y-4945 and 087-5550 Back-Up Rings in dealer parts stock and all 7Y-4945 and 087-5550 Back-Up Rings that are in 225-4625 and 234-4442 Seal Kits in dealer parts stock to see if any of the back-up rings are white in color. White 7Y-4945 and 087-5550 Back-Up Rings need to be removed from dealer stock and from seal kits in dealer parts stock. These back-up rings should not be used. (See Image 1).
Black and dark gray back-up rings are good and should remain in dealer stock (See Image 2).
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Image1
Image2

SERVICE CLAIM ALLOWANCES

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Submit one claim for all parts removed from dealer parts stock.

PARTS DISPOSITION

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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
 
 
 

Caterpillar Information System:

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