Camshaft

Camshaft Journal Diameter





1. Measure each camshaft journal diameter in 2 directions.
^ If out of specification, install new components as necessary.

Camshaft End Play - OHC Engines

Special Tool(s):

1. Use a Dial Indicator Gauge with Holding Fixture to measure camshaft end play.
2. Position the camshaft to the rear of the cylinder head.
3. Zero the indicator.





4. Move the camshaft to the front of the cylinder head. Note and record the camshaft end play.
^ If camshaft end play exceeds specifications, install new camshaft and recheck end play.
^ If camshaft end play exceeds specification after camshaft installation, install a new cylinder head.

Camshaft Surface Inspection





1. Inspect camshaft lobes for pitting or damage in the contact area. Minor pitting is acceptable outside the contact area.
^ If excessive pitting or damage is present, install new components as necessary.

Camshaft Lobe Lift

Special Tool(s):

1. Use a Dial Indicator Gauge with Holding Fixture to measure camshaft intake/exhaust lobe lift.
^ Rotate the camshaft and subtract the lowest indicator reading from the highest indicator reading to figure the camshaft lobe lift.
^ If out of specification, install new components as necessary.

Camshaft Runout

Special Tool(s):

1. NOTE: Camshaft journals must be within specifications before checking runout.





Use a Dial Indicator Gauge with Holding Fixture to measure the camshaft runout.
^ Rotate the camshaft and subtract the lowest indicator reading from the highest indicator reading.
^ If out of specification, install new components as necessary.