K 1500 Truck 4WD V8-5.7L VIN R (1997)
Camshaft: Testing and Inspection
Out-of-Round & Runout
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Tools Required
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J 7872 Magnetic Base Indicator Set, or equivalent.
1. Measure the camshaft journals with a micrometer.
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If journals are more than 0.025 mm (0.0010 inch) out-of-round, replace the camshaft.
2. Measure camshaft runout using J 7872.
a. Mount the camshaft in V-blocks between centers.
b. Use the J 7872 in order to check the intermediate camshaft journal.
3. If runout exceeds 0.065 mm (0.0026 inch), camshaft is excessively bent and should be replaced.
