Usage:
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.
NOTE: 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 "PS4047" 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
May 31, 1998Problem
When using the front suspension of the machine, hydraulic oil may leak throught the tank breather on certain PF-300B and PS-300B Compactors
Affected Product
Model & Identification Number
PS-300B (4PN78-156)
PF-300B (6HM1-95, 6HM98-99)
Parts Needed
Action Required
Drain the hydraulic tank.
Remove the existing Adapter 8T7915 and Connector 6V8633 from the bottom port of the hydraulic tank.
Install the Nozzle 141-9973 on the tank using the Seal 6V0408.
Reinstall the existing tee on the nozzle using the Seal-O-Ring 6V8398.
Fill the tank with hydraulic oil.
Location of Parts
Service Claim Allowances
NOTE: This is a 1.5-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.