RETAINER-SEAL 5K5501 - 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
There have been reports of rocker arm inserts failing on certain C9.3 machine engines.Solution
Caterpillar is aware of this problem, but a permanent repair has not been identified. As an interim solution follow the repair instruction given below.If the rocker arm insert has failed, replace the failed rocker arm assembly.Table 1 contains the intake and exhaust rocker arm assembly part numbers.Note: Only replace the failed rocker arm assembly.
Table 1
Part Number Part Name Description
263-0034 Rocker Arm As Intake
347-8748 Rocker Arm As Exhaust During replacement of the failed rocker arm assembly, submit a Dealer Solution Network (DSN) ticket to the North American Engine tier 2. This process is done for information gathering and to initiate a send it back request.