- Put the camshaft in V–blocks and have a dial indicator contact the
inside face of the cam gear. If run-out exceeds 0.0098 in. (0.24892mm), replace
the gear.
- Using a dial micrometer and a set of V–blocks, measure the camshaft
bearing wear and the camshaft bend; the bend limit is 0.002 in. (0.0508mm)
- Measure the cam gear-to-crankshaft backlash. Mount a dial indicator with
its stem resting on a tooth of the camshaft gear. Rotate the gear until all
slack is removed, and zero the indicator. Rotate the gear in the opposite
direction until slack is removed, and record gear backlash. Mount the indicator
with its stem resting on the edge of the camshaft gear, parallel to the axis
of the camshaft. Zero the indicator., and turn the camshaft gear one full
turn, recording the runout. If either backlash or runout exceeds specifications,
replace the worn gear(s).
