C27 and C32 Engines for Caterpillar Built Machines Caterpillar


Camshaft

Usage:

992K 880


Illustration 1g03153160


Illustration 2g03153163

Table 1
Item  Qty  Part  Specification Description 
Before assembly, lubricate the camshaft bearings, the journals, and the lobes with a 50/50 mixture of green 8T-2998 Lubricant and clean engine oil. 
420-0455 Camshaft  The end of the camshaft that is marked "F" must be placed at the front of the engine. 
420-0456 Camshaft  The end of the camshaft that is marked "F" must be placed at the front of the engine. 
Diameter of camshaft journal is 84.85 ± 0.02 mm (3.341 ± 0.001 inch)


Illustration 3g03153179

Table 2
Item  Qty  Part  Specification Description 
Use the following procedure to determine the actual camshaft lobe lift:

1. Measure camshaft lobe height (C).
2. Measure the base circle (D).
3. Subtract the base circle (D) from the camshaft lobe height (C). The difference is the actual camshaft lobe lift (B). 
Specified camshaft lobe lift (B) for: 
Inlet lobe is 9.4311 mm (0.371300 inch) .
Exhaust lobe is 8.5152 mm (0.33524 inch).
Injector lobe (right blank) is 10.0817 mm (0.39692 inch).
Injector lobe (left blank) is 10.0764 mm (0.39671 inch).

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