MOTOR GP 0813307 - 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 "PS4267" 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.
Termination Date
April 30, 1999Problem
Dirt may ingress around the outer diameter of the rod wiper seal on rear suspension cylinders of certain D30D Articulated Trucks and cause the cylinders to leak.
Affected Product
Model & Identification Number
D30D (3AJ305-414)
Parts Needed
1 - 4C4032 Compound2 - 5H6734 Seal-O-Ring2 - 2J3961 Ring-Back-Up2 - 8T7538 Ring-Wear2 - 2U9113 Seal-Rod2 - 6U4154 Wear Ring2 - 6U5640 Back Up Ring2 - 6U9505 Seal2 - 1389740 Seal-lip Type2 - 1542333 Head Qty's are for two cylinders. If one cylinder is repaired, both cylinders must be done at the same time.
Action Required
See the attached procedure.
Service Claim Allowances
This is an 8-hour job to repair two cylinders. Both of the cylinders must be done at the same time.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Attach.(1-Rework Procedure)Rework Procedure
1. REMOVE THE REAR SUSPENSION CYLINDERS FROM THE TRUCK.2. USE PROCEDURE OUTLINED IN SERVICE MANUAL MODULE SENR8210 TO DISASSEMBLE THE CYLINDERS.3. CLEAN AND INSPECT ALL PARTS. REFER TO GUIDELINES FOR REUSEABLE PARTS ON HYDRAULIC CYLINDERS AND RODS DURING INSPECTION.4. INSTALL NEW SEALS IN 154-2333 HEAD AS PER Illustration. "APPLY COATING OF 4C4032 ADHESIVE TO THE OUTER CASING OF THE 138-9740 SEAL-WIPER BEFORE INSTALLATION INTO THE HEAD"5. REASSEMBLE CYLINDER USING NEW SEALS ON PISTON. REFER TO SPECIFICATIONS MANUAL SENR8194-02 FOR CORRECT ASSEMBLY TORQUE VALUES FOR HEAD AND PISTON.6. RE-INSTALL CYLINDERS ON TRUCK. IF ONE SUSPENSION CYLINDER LEAKS, THIS PROGRAMME SHOULD BE IMPLEMENTED ON BOTH CYLINDERS
Location of Parts