INSTALLATION AR 3440797 - Caterpillar

Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.Problem
Reports have been received that the compensator assembly spring may loosen in the control valve group on the machines listed above. This failure may be due to spring operating at higher temperature during the continuous loading cycle.Solution
Illustration 1 g06219161
Control valve group
(A) 309-3915 Compensator AsIn the event of failure, replace with the same part number.Create a Service Information Management System (SIMS) entry for the failed component to generate a "Send-It-Back""(SIB) request. An SIB request will be issued to you through the SIB process after the SIMS entry is created. Submit the failed component along with any other available information to SIMS referencing the CPI number 394894.