ARMY TM 9-2815-252-24
AIR FORCE TO 38G1-92-2
(2) Roll pushrod along surface plate checking for curvature with a feeler gage. Normal reading should be
0.008 in. (0.2 mm) or less.
(3) Inspect both ends of pushrod for excessive wear or damage. If excessive wear or damage is found,
b. Inspect rocker lever valve stem contact surface for step wear and scoring. If contact surfaces have light step
wear or scoring, they may be honed with an oil stone. If step wear or scoring is severe, rocker lever must
Ensure that no piston Is at TDC when Installing pushrods. Failure to follow this caution could
a. Lightly oil pushrod (9, FIGURE 327) with engine lubricating oil (MIL-L-2104) and install it in cylinder head.
Ensure pushrod does not interfere with cylinder head clearance hole.
b. Lightly oil rocker lever (6) and install it on cylinder head bolt (7). Secure with nut (5) finger tight.
c. Gradually tighten nut (5) until heel of rocker lever (6) makes contact with ball end of pushrod (9). Ensure
rocker lever is centered over valve stem.
d. Tighten nut (5) to 25 ft-lbs (33.9 Nm).
e. Repeat above steps a thru d, for remaining pushrods and rocker levers.
f. Wait for up to 90 seconds on a new tappet or up to 45 minutes on a used engine for the hydraulic tappet to
Do not force crankshaft to rotate If rotation is not free easy movement. This will prevent engine
damage if a piston comes in contact with valve.
Check for bleed down by rotating pushrods. If a pushrod rotates after the respective valve has
closed, that hydraulic tappet has bled down.
g. Manually turn the crankshaft very slowly, checking that all pushrods will rotate after their respective valve has
3-27. CYLINDER HEAD ASSEMBLY.
a. Remove intake manifold, refer to paragraph 36.1.
b. Remove exhaust manifold, refer to paragraph 3-7.1.
Cap all fuel line connections that have been opened to prevent contamination of fuel system.
c. Remove fuel injector pipes, refer to paragraph 3-18.1.
d. Remove fuel injectors, refer to paragraph 3-17.1.
e. Remove two nuts (1, FIGURE 3-28) securing lifting eye (2); remove lifting eye (2).