C8.7 Marine Engines Caterpillar


Crankshaft

Usage:

C8.7 CS7



Illustration 1g03753978

Table 1
Specification for 431-4143 Crankshaft    
Item     Qty     Parts     Specification Description    
Refer to Specifications, "Connecting Rod Bearing Journal" and Specifications, "Main Bearing Journal" for more information about the crankshaft journals.    
For the correct procedure on measuring for a bent crankshaft, refer to the Guideline for Reusable Parts and Salvage Operations, SEBF8054, "Procedure to Measure and Straighten Bent Crankshafts".    
1     1     430-8915 Dowel     Protrusion of the dowel from the surface of the crankshaft is
3.0 ± 0.5 mm (0.12 ± 0.02 inch).    
2     4     431-7706 Bearings     Thrust plates to be used only on rear main bearing.
End play of the crankshaft is
0.11 to 0.23 mm (0.004 to 0.009 inch).
The maximum permissible end play with used bearings is
0.11 to 0.23 mm (0.004 to 0.009 inch).
Thickness is
3.38 mm (0.133 inch) to
3.43 mm (0.135 inch).    

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