C27 and C32 Generator Set Engines Caterpillar

Illustration 1	g01398108
(1) Exhaust lobe (2) Injector lobe (3) Inlet lobe

Note: The end of the camshaft that is marked "F" must be placed at the front of the engine. Lubricate the camshaft bearings, the journals, and the lobes with a 50/50 mixture of 8T-2998 Lubricant and clean engine oil.

(A) Diameter of camshaft journal ... 84.85 ± 0.02 mm (3.341 ± 0.001 inch)

Illustration 2	g01398109

Use the following procedure to find the actual lobe lift:

1. Measure the camshaft lobe height (C).

2. Measure the base circle (D).

3. Subtract the base circle measurement in Step 2 from the camshaft lobe height in Step 1. The difference is the actual lobe lift.

(B) Specified camshaft lobe lift

Exhaust lobe ... 8.51520 mm (0.335243 inch)

Injector lobe (right bank) ... 10.33685 mm (0.406961 inch)

Injector lobe (left bank) ... 10.34660 mm (0.407345 inch)

Inlet lobe ... 9.61850 mm (0.378680 inch)

The maximum permissible difference between the actual lobe lift in Step 3 and the specified camshaft lobe lift is 0.13 mm (0.005 inch).