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 TM 55-1905-221-14-2
5-14.
ROCKER ARMS, CAM FOLLOWERS AND PUSHRODS (Continued).
LOCATION/ITEM
ACTION
REMARKS
ADJUSTMENTS (Cont)
27. Exhaust
a.
General. The correct exhaust
Valve
valve clearance at normal
Clearance
operating temperature is important
Adjustment
for smooth, efficient operation of the
engine. Whenever the cylinder head is
overhauled, the exhaust valves
are reconditioned or replaced, or if the
valve operating mechanism is replaced
or disturbed in any way, the valve
clearance must be adjusted to the cold
setting to allow for normal expansion of
the engine parts during the engine
warm-up period. This will insure a valve
setting that is close enough to the specified
clearance to prevent damage to the valves
when the engine is started.
b.
Exhaust Valve Clearance
Adjustment (Cold Engine).
1.
Place governor throttle
control lever in the NO-FUEL
position. Pull engine stop
control out.
2.
Remove rocker arm cover.
3.
Rotate crankshaft until the
injector follower is fully
depressed on the cylinder
to be adjusted.
4.
Loosen the pushrod locknut.
5.
Place a 0.013 inch feeler
gage, tool J9708, between
the valve stem and the
rocker arm. Adjust the
pushrod to obtain a smooth
"pull" on the feeler gage.
5-332
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