TM 5-3810-300-24&P-3
14.1
EXHAUST VALVE CLEARANCE ADJUSTMENT
The correct exhaust valve clearance at normal engine
Whenever the cylinder head is overhauled, the exhaust
operating temperature is important for smooth, efficient
valves are reconditioned or replaced, or the valve
operation of the engine.
operating mechanism is replaced or disturbed in any
way, the valve clearance must first be adjusted to the
Insufficient valve clearance can result in loss of
cold setting to allow for normal expansion of the engine
compression, misfiring cylinders and, eventually, burned
parts during the engine warm-up period. This will ensure
valve seats and valve seat inserts. Excessive valve
a valve setting that is close enough to the specified
clearance will result in noisy operation, especially in the
clearance to prevent damage to the valves when the
low speed range.
engine is started.
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