Visually inspect the valve and injector lobes for damage.
NOTE: Cummins Engine Company, Inc. does not recommend repairing camshafts by grinding the valve or injector
lobes.
If the camshaft is damaged, it must be replaced.
Visually inspect the camshaft gear for cracks, chipped, or broken teeth.
Use a feeler gauge to measure the clearance between the gear and the shoulder on the camshaft.
NOTE: The clearance must not exceed 0.13 mm [0.005-inch].
Measure the seven camshaft bushing journals.
Replace the camshaft if the journal dimensions do not meet specifications.
Measure the camshaft thrust washer.
Replace the thrust washer if it does not meet specifications.
In an assembled engine, the camshaft end clearance must be 0.20 mm to 0.33 mm [0.008-inch to 0.013-inch].
Refer to Engine Assembly in Procedure 00-02.
Refer to the Alternate Repair Manual, Bulletin No. 3379035, for procedures to magnetically check for cracks
in the camshaft and gear.
