2-54 ROCKER LEVER ADJUST (CONT).
ROCKER LEVER VALVE ADJUSTMENT:
With A valve set mark aligned with pointer on gear cover and both valves closed on cylinder No. 5. loosen locknuts
on intake and exhaust valve adjusting screws.
Select a feeler gauge for the correct valve lash specification (intake valve 0.011-inch or 0.028 mm, exhaust valve
0.023-inch or 0.058 mm).
Insert feeler gauge (1) between top of crosshead (2) and rocker lever pad (3).
Tighten adjusting screw until a slight drag is felt on feeler gauge.
Hold adjusting screw In this position. The adjusting screw must not
turn when locknut is tightened. Tighten locknut
to 45 ft-lbs (60 N.m) torque.
After tightening locknut to the correct torque value, check to make sure the
feeler gauge will slide backward and forward between the crosshead and the
rocker lever with only a slight drag.
Continue adjustment until all rocker lever valves have been adjusted.
Install rocker lever cover assembly in accordance with paragraph 2-53.
CARBON MONOXIDE (EXHAUST GAS) CAN KILL YOU
Exposure to exhaust gases produces symptoms of headache, dizziness, loss of
muscular control, drowsiness, or coma. Brain damage or death can result from severe
Fumes from engine become concentrated with poor ventilation. Operate engine in a
ventilated area only.
While running engine, be alert for fumes. If someone is overcome, expose to fresh air;
keep warm and still; give artificial respiration if needed. Seek medical attention.
Administer oxygen, if available.
GOOD VENTILATION IS THE BEST DEFENSE AGAINST EXHAUST POISONING.
Start engine in accordance with TM 10-4320-307-10.
Observe newly adjusted components for proper operation.