Section VII. OIL PAN, OIL PUMP, AND FILLER BLOCKS

TM 10-3930-632-34

times, the clearance is insufficient.

(4) Hold valve lifter with an open end wrench while

using a second wrench to turn adjusting screw one-

quarter to one-half turn clockwise. Repeat clearance

check and adjustment until proper clearance is obtained.

The adjustable-type valve lifters have self-locking

adjusting screws that require no locknuts.

(5) If an 0.013-inch feeler gage moves freely when

valve is not being lifted, the clearance is too great. Hold

valve lifter with an open end wrench while using a

second wrench to turn valve lifter adjusting screw

counterclockwise one-quarter to one-half turn. Repeat

the clearance check and adjustment until proper

clearance is obtained.

(6) Repeat clearance check and adjustment for

remaining intake valves.

(7) Check exhaust valve clearance for proper

0.020-inch clearance by alternately passing an 0.019-

inch and an 0.02-inch flat feeler gage between the head

of the adjusting screw and the valve stem cap.

(8) If necessary, adjust the exhaust valve

clearance in the same manner as the intake valves

described in (1) through (5) above.

(9) Install the valve tappet cover using a new

Figure 9-12.1. Valve Adjustment

gasket. Secure with two cover nuts and gaskets.

all times, the clearance requires no adjustment.

(3) If an 0.011-inch feeler gage is gripped at all

Section VII. OIL PAN, OIL PUMP, AND FILLER BLOCKS

cylinder block to provide a sump for the engine oil as it

9-14. General

drains from the operating parts of the engine.

The oil pan is mounted at the bottom of the

Change 1 9-10