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 must be administered as soon as possible. When reporting the repair, use "PI3753" as the Part Number, "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description Code. Exception: If the repair is done after failure, use "PI3753" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
Completion Date
July 31, 1995Termination Date
February 29, 1996Problem
The existing orifice in the vibration pump override valve may cause increased heat in the hydraulic system resulting in excessive loading of the engine during the vibration start-up period in certain CB534B and CB634 Compactors.
Affected Product
Model & Identification Number
CB534B (4JL40-155)
CB634 (5CL29-125)
Parts Needed
Dealers will need to order parts for this Program.
- 1 - 1G7417 Orifice
Action Required
See the attached rework procedure.
Owner Notification
U.S. and Canadian owners will receive the attached Owner Notification.
Service Claim Allowances
NOTE: This is a 1-hour job.
NOTE: U.S. and Canadian Dealers Only - Eligible dealers may enter a Type 2 SIMS Report.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
NOTE: MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
Attach.
- (1-Owner Notification)
- (2-Rework Procedure)
Copy Of Owner Notification For U.S. And Canadian Owners
Rework Procedure
Remove the existing 9T3928 Plug and 8T7876 Seal from the 1193135 Vibration Pump as shown in the Illustration below. Remove the 1209495 Orifice from the housing and replace with a new 1G7417 Orifice. Install the 8T7876 Seal and 9T3938 Plug.
