KIT-RETAINER 4393452 - 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 has been a significant proportion of returned parts with the following part numbers :
Table 1
Part Number Description
424-6821 Alternator
321-8929 Alternator
321-8932 Alternator
321-8927 Alternator These parts have been returned analyzed and are performing to specification.Solution
Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.
Refer to Special Instruction, M0091321, Battery and Charging System Troubleshooting on certain C4.4, C6.4, C6.6 and C7.1 Machine Engines and use the advanced troubleshooting guide within, prior to any decision to replace the alternator.Caterpillar is aware of this problem, but an interim repair has not been defined. If the troubleshooting guide indicates a fault with the alternator, replace with the same part.