OPERATOR AR 3467404 - 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
In some engines, interference between the camshaft drive gears and mounting bolts for the flywheel housing has been found. This condition caused binding, even though the bolts for the gears were torqued properly. The binding increases wear on the engine side of the camshafts thrust plates.Solution
If interference is found between a camshaft gear and mounting bolts for the flywheel housing, replace the camshaft drive gear with a new gear of the same part number.
Table 1
Camshaft Drive Gears for 3500 and G3500 Engines    
101-0242    
101-1369    
156-9744    
175-5201    
175-5202    
261-3140    
7E-3897