HEEL AS 4185564 - Caterpillar

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.
This Program can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS8322" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.
Several other programs are being released concurrently with this to correct other deficiencies on the early machines. It might be advisable for the customers benefit to consolidate several of the reworks at one time. If you have not received the additional rework information, please contact Product Support at Gosselies for this information.
Termination Date
March 31, 1996Problem
The return lines from the tank are subjected to frequent high pressure surges which cause the differential valve drain hoses to jump violently. The current clamps (see Illustration 1) may fail to do this after some length of time. This modification improves the clamping capability.
Affected Product
Model & Identification Number
375 (6NK58-92)
375L (9WL36-55, 9WL60-81, 9WL84-84, 9WL86-89)
5080 (6XK78-78, 6XK79-79, 6XK86-86, 6XK90-90, 6XK91-91 )
Parts Needed
4 - 1087242 Rubber2 - 1087250 ClampAction Required
Rework the 2 - 1087250 Clamps by spot welding the fabricated plate per Illustration 2.
Service Claim Allowances
This is a 2 hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Illustration 1
Illustration 2