SOFTWARE GP- 3904602 - Caterpillar

Introduction
Introduction The problem that is identified below does not have a known solution. Until a permanent solution is known, use the recommendations below.Problem
Connecting rod bearing failures have occurred in both factory new and dealer rebuilt engines. These failures resulted in connecting rod seizure. The bearing failures have been traced back to a lead-tin overlay delamination large enough that the oil film is disrupted leading to bearing adhesive failure.
Table 1
3500 Affected Bearings
Part Numbers Description
107-7330 Connecting Rod Bearing
107-7331 Connecting Rod Bearing
107-7332 Connecting Rod Bearing
107-7333 Connecting Rod Bearing
107-7334 Connecting Rod Bearing
107-7335 Connecting Rod Bearing
230-2520 Connecting Rod Bearing
283-2579 Connecting Rod Bearing
283-2580 Connecting Rod Bearing
283-2581 Connecting Rod Bearing
283-2582 Connecting Rod Bearing
283-2584 Connecting Rod Bearing
149-6031 Main Bearing As
149-6032 Main Bearing
149-6033 Main Bearing
149-6034 Main Bearing
149-6035 Main Bearing
Table 2
G3600 Affected Bearings
Part Numbers Description
192-7870 Connecting Rod Bearing
7E-2614 Connecting Rod Bearing
7E-2615 Connecting Rod Bearing The root cause has been identified as interruptions in the electrical current during the plating process. This results in poor lead-tin overlay adhesion and eventual lead-tin overlay de-bonding.The affected date code range the supplier identified is:
Plating Year 2008 with plating month codes: UG, UH, UI, UJ, UK and UL
Plating Year 2009 with plating month codes: UASolution
If you have an engine that has suffered a bearing failure, inspect the remaining connecting rods and main bearings in the engine. Also, submit a DSN entry including the following key points in order to expedite processing of your claim:
Engine or Machine Serial Number
Bearings Lot Number (formatted as 5#### #### U#)
Part picture (if possible) or Dealer report
Engine Hours
Parts Hours