Valve Tappet Clearance Adjustment (cont).

TM 10-3930-638-24&P

3-5. ENGINE MAINTENANCE (cont)

a. Engine Tune-up (cont).

(2) Valve Tappet Clearance Adjustment (cont).

REMARKS

ITEM

ACTION

LOCATION

STEP

TAPPET ADJUSTMENT -- COLD SETTING

Repeat step a above to adjust intake and

b. Rocker arm adjusting

Adjust

exhaust valves as pointed out by arrows

screws

cont)

below

c. Engine flywheel

Rotate clockwise Rotate engine one complete revolution

until pointer in timing hole is in line with

TDC mark on flywheel (TDC position

for No. 4 cylinder)

Repeat step a above to adjust intake and

d. Rocker arm adjusting

Adjust

exhaust valves as pointed out by the

screws

arrows below

e. Valve stems

Lubricate

Squirt oil through valve springs to lubr-

icate stems before starting engine

3-30