SUPPORT 6T9808 - Caterpillar

Truck Engine:
3406B (S/N: 3ZJ1-UP; 4CK1-UP)
This article shows the steps that are taken before a warranty claim is submitted.During the rebuild of an engine, the crankshaft may not be able to rotate after the main bearing cap bolts are torqued. The person that is performing the rebuild might suspect that the crankshaft is not within the specification.Before returning the crankshaft, perform the following steps.
Check the alignment of the bores for the main bearing bore for misalignment.Refer to Reuse and Salvage Guidelines, SEBF9162, "Inspection and Reconditioning Procedures of Main Bearing Bores in Cylinder Blocks".
Check the crankshafts.Refer to Reuse and Salvage Guidelines, SEBF8054, "Procedure to Measure and Straighten Bent Crankshafts".Utilize the ninth revision of the document or a newer revision. Using the Service Information System (SIS) will ensure that the latest version is used. Do not use a lathe in order to check the straightness of the crankshaft. Checking the straightness of the crankshaft on a lathe does not provide accurate results.
Table 1
Effective Crankshaft Assemblies    
0R1207     0R1216    
0R2522     0R2529    
0R2812     0R3260    
0R3972     0R3973    
0R4805     0R4806    
0R9443     0R9906    
1W-7577     2W-7458    
4N-7693     4P-9857    
6I1453     261-9647    
261-9648