Camshaft and Bearings Cleaning and Inspection

WARNING: This page is about a different car, the 2002 GMC Sonoma and 2002 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 7872 Magnetic Dial Indicator Set

Measure the camshaft journals with a micrometer. If journals are more than 0.025 mm (0.0010 in) out-of-round, replace the camshaft.

Fig 1: Measuring Camshaft Journals Using Micrometer
Courtesy of GENERAL MOTORS CORP.
Measure camshaft runout using J 7872 .
1. 2.1. Mount the camshaft in V-blocks between centers.
2. 2.2. Use the J 7872 in order to check the intermediate camshaft journal.
If runout exceeds 0.05 mm (0.002 in), camshaft is excessively bent and should be replaced.

Fig 2: Measuring Camshaft Runout Using J 7872
Courtesy of GENERAL MOTORS CORP.