TM 5-3825-229-14&P
4-47. VALVE ADJUSTMENT (cont)
NOTE
Replace any rocker arm locknut that cannot hold a minimum wet torque of 30 Ib-in (3.4 Nm) (wet). New,
well-oiled rocker arm locknuts should have a minimum initial torque of 55 Ib-in (6.2 Nm) (wet).
d.
With piston of number one cylinder at TDC, check and adjust the intake and exhaust valves marked with an "X"
in Valve Lash Adjustment Table #1.
e.
To check valve lash, insert the correct size feeler gauge between the rocker arm and the valve stem. If the feeler
gauge cannot be inserted, loosen rocker arm locknut slightly. Intake Valve Lash: 0.008 in. (0.2 mm) (cold).
Exhaust Valve Lash: 0.012 in. (0.3 mm) (cold).
f.
Tighten rocker arm locknut until feeler gauge can be inserted and withdrawn with a slight drag.
g.
Turn engine 360° (one complete revolution) in a clockwise direction (as viewed from front of engine) and adjust
the intake and exhaust valves marked with an "X" in Valve Lash Adjustment Table #2.
h
After valve adjustment is complete, install rocker arm cover (2) with new gasket (3). Install cap nuts and gaskets
(1) and torque to 13 Ib-ft (18 Nm) (wet).
i.
Install cap plug (4) in flywheel housing.
j.
Install engine housing (para. 4-56).
4-101
