45. Camshafts Clean and Inspect

Camshafts Cleaning and Inspection

- Tools Required
- J 7872 Magnetic Base Dial Indicator Set





1. Clean the camshafts with cleaning solvent.
2. Inspect the camshafts for the following conditions:
- Scored camshaft journals
- Damaged camshaft lobes
- Damaged camshaft sprocket locator pins
- Damaged threads
3. Measure the camshaft lobes using a micrometer. The intake camshaft lobes should be a minimum of 41.5 mm (1.635 inch). The exhaust camshaft lobes should be a minimum of 41 mm (1.61 5 inch).





4. Use J 7872 to measure the camshaft runout.
4.1. Set the camshaft in V-blocks between the centers.
4.2. Measure the intermediate camshaft journal.
5. Use J 7872 to measure the camshaft lobe lift.
5.1. Lubricate the camshaft to V-block contact areas with engine oil.
5.2. Set the camshaft on V-blocks.
5.3. Measure the camshaft lobe lift.
6. If the runout or camshaft lobe lift is not within specifications, replace the camshaft.