ARMY TM 9-2815-252-24
AIR FORCE TO 38G1-92-2
i. Lift off cylinder head (6, FIGURE 3-28) and gasket (7). Discard gasket.
a. Remove pushrod tubes (8, FIGURE 3-28), seals (9), washers (10) and tappets (11) from crankcase.
b. Remove seals (12) from cylinder head (6). Discard seals (12)
c. If necessary, remove capscrew (13) and washer (14).
d. Position head upright on bench and place a suitable block of wood under head of valve (15 or 16).
Do not stand in front of valve springs while compressing them. Failure to follow this warning
could result in personal Injury.
If valves are to be reused, tag them with cylinder number from which they were removed.
Manufacturer recommends that all valves and springs be replaced during a major overhaul.
e. Using standard valve spring compressor tool remove each valve as follows:
(1) Push down on tool until collets (17) can be removed.
(2) Gently release tool. Remove carrier (18), spring (19), seal (20), and plate (21). Discard seal.
(3) Turn cylinder head (6) over and remove valve (15 or 6)
f. Insert hex key (allen wrench) into breather tube (23) to support bore of tube. Using pliers, remove breather
FIGURE 3-29. Valve Guide Tool and Depth Stop
3-27.3. Inspect and Measure.
a. Using appropriate measuring devices, check components listed in TABLE 3-4 for wear. Replace components
that exceed maximum clearance.