TM 9-2815-202-34
4-38. CYLINDER HEAD REPAIR (Cont)
CAUTION
Do not use fuel oil to clean cam followers. Lubricating oil will be washed away and
cause scoring of cam roller bushing at startup.
(b) Wash cam followers with engine oil and wipe dry. Examine cam follower rollers for
pitting, scoring, and flat spots. Rollers (88) must turn freely on their pins (89).
(c) Using a dial indicator and holding fixture, measure total diametric clearance on cam
follower roller. Secure cam follower assembly in a vise or other holding device and
place dial indicator needle against outside diameter of roller. Obtain total clearance by
moving roller in crosswise direction. Maximum clearance is 0.010 inch.
(d) Using a feeler gage, measure side clearance on cam follower. Insert gage between end
of roller and leg of cam follower body. Side clearance must be 0.015 to 0.023 inch.
(e) If necessary, install new cam follower rollers and pins as follows:
1, Clamp cam follower holding fixture (90) in a vise and place cam follower in groove
at top of assembly with cam follower pin resting on top of small plunger in holding
assembly.
4-198
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