7-34. Camshaft and Tappets
engine maintenance stand.
Remove crankshaft gear retaining washer (8,
by removing retaining ring(7)
on the crankshaft.
When removing camshaft be careful not to
Lay engine on side to avoid dropping tappets (27)
and remove camshaft assembly (14) as a group. If
necessary, pry it out with a screwdriver between camshaft
gear and crankcase. Remove retaining ring (15) and press
gear (16) off camshaft.
Remove the valve tappets (27). These can be
removed only from bottom of crankcase.
Camshaft Bearings. The camshaft bearings (24,
25, and 26, fig 7-31) should be replaced if clearance to
camshaft is greater than specified in table 7-2, or if
bearings show cracks, breaks, burrs, excessive wear, or
other defects. The camshaft-to-bearing clearance should
be 0.0012- to 0.0037-inch. To check rear bearing (24),
remove expansion plug (23) at rear of crankcase.