C4.4 Engines for Caterpillar Built Machines Caterpillar


Crankshaft - Spheroidal Graphite Iron (SGI) Crankshaft

Usage:

CB-54B 463


Illustration 1g03435603
Typical Example

Table 1
Callout  Quantity  Part  Specification Description 
Connecting rod bearings  Refer to the Specifications Module, "Connecting Rod Bearing Journal" topic for information on the connecting rod bearings. 
Thrust washers  Standard thickness 2.26 to 2.31 mm (0.089 to 0.091 inch)
Oversize thickness 2.45 to 2.50 mm (0.097 to 0.098 inch) 
Main bearings  Refer to the Specifications Module, "Main Bearing Journal" topic for information on the Main bearings. 
Crankshaft gear  Maximum permissible temperature of the gear for installation on the crankshaft 180 °C (356 °F)
The timing mark is toward the outside of the crankshaft when the gear is installed on the crankshaft. 

Note: The SGI crankshaft cannot be reconditioned. If the crankshaft is worn or damaged, the crankshaft must be replaced

Table 2
Callout  Quantity  Part  Specification Description 
Crankshaft end play  End play of the crankshaft 0.05 to 0.38 mm (0.002 to 0.015 inch)

Maximum crankshaft end play 0.51 mm (0.020 inch) 
Connecting rod journal  Refer to the Specifications Module, "Connecting Rod Bearing Journal" topic for more information on the connecting rod bearing journals and connecting rod bearings. 
Main bearing journal  Refer to the Specifications Module, "Main Bearing Journal" topic for information on the main bearing journals and for information on the main bearings 

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