PULLEY-FAN DRIVE 7W5109 - 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 only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS5240" 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.
Termination Date
February 28, 1999Problem
Some 834B Wheel Tractors and 836 Compactors lift cylinder rods may fail in certain high-stress applications.
Affected Product
Model & Identification Number
834B (92Z453)
836 (3RL26-111 7FR215-244 )
Parts Needed
4 - 4J0522 Seal-O-Ring16 - 8T5360 Washer16 - 8T8916 Bolt 1 - 1326835 Cylinder Group 1 - 1327890 Hose Assembly 1 - 1327891 Hose AssemblyAction Required
See the attached rework procedure.
Service Claim Allowances
This is a 6-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Attach.(1-Rework Procedure)Rework Procedure
1. Insure compactor blade is resting firmly on the ground, parking brake is set, and all pressure in the hydraulic system has been relieved prior to disconnecting the hydraulic lines.2. Remove parts from 4T1541 Lines Group as indicated in Illustration 1.3. Remove 6J1272 Cylinder Group. Once the cylinder group is removed, rework the 8V4631 Plate as indicated in Illustration 2.4. Prime and paint the reworked plate.5. Install the mounting group so that it is assembled as shown in the 1053377 Mounting Group (Illustration 3). The parts consist of the mounting group does not change.6. Once the mounting group has been assembled, install the new 1326835 Cylinder Group.7. After the cylinder has been installed, assemble the new hoses and seals as indicated in the 1327889 Lines Group (Illustration 4).8. Check the hydraulic fluid level, add if necessary. Operate the machine to fully warm hydraulic oil and check for leaks.
Illustration 1
Illustration 2
Illustration 3
Illustration 4