C2.2 Engine and C1.5 Generator Set Caterpillar


Main Bearing Journal

Usage:

C1.5 NCA

Table 1
Diameter of the Main Bearing Journals 
Journals  Diameter  Service limit 
Standard  67.957 to 67.970 mm (2.67550 to 2.67597 inch)   67.90 mm (2.6732 inch) 
Undersize 0.25 mm (0.010 inch)  67.707 to 67.720 mm (2.66563 to 2.66614 inch)  67.65 mm (2.6634 inch) 
Undersize 0.50 mm (0.020 inch)  67.457 to 67.470 mm (2.65579 to 2.65630 inch)  67.40 mm (2.6535 inch)(1) 
(1) If the diameter of the main bearing journal is less than the maximum undersize service limit, the crankshaft must be replaced.

Clearance between the main bearing and the main bearing journal

Standard clearance ... 0.044 to 0.102 mm (0.0017 to 0.0040 inch)
Service limit ... 0.20 mm (0.0079 inch)
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