F 550 4WD Super Duty V8-6.4L DSL Turbo (2008)
Camshaft: Testing and Inspection
Camshaft Lobe Lift
Camshaft Lobe Lift
1. To check the intake and exhaust lobes, measure across diagonally (A-C) and across horizontally (B-D). Subtract (B-D) from (A-C). This will give
cam lobe lift. Install a new camshaft when cam lobe lift wear exceeds specifications.
2. Inspect the thrust plate for wear, cracks or distortion.
3. Inspect the camshaft drive gear for worn or damaged teeth.
4. Wash the camshaft in cleaning solvent with a soft brush. Dry with filtered, compressed air.
