ENGINE AR-COMPLETE 4176073 - Caterpillar

Illustration 1 g03146238
Front view of engine
Illustration 2 g03146239
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.
1 1 421-0087 Camshaft The end of the camshaft that is marked "F" must be placed at the front of the engine.
2 1 421-0097 Camshaft The end of the camshaft that is marked "F" must be placed at the front of the engine.
A - - Diameter of camshaft journal is 84.85 0.02 mm (3.341 0.001 inch).
Illustration 3 g03146256
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 9.6185 mm (0.37868 inch).
Exhaust lobe is 8.5152 mm (0.33524 inch).
Injector lobe (right blank) is 10.3372 mm (0.40698 inch).
Injector lobe (left blank) is 10.3381 mm (0.40701 inch).