Replacement Adjustable Rocker Arm Stud

Rocker Arms:

Adjusting Valve Lash:

CAUTION: The following adjustment procedure should be used when reconditioning a valve seat, and a new replacement (adjustable) rocker arm stud has been installed.


ADJUST
Valves when lifter is on base circle of camshaft lobe:

a. The engine should be in the #1 firing position. This may be determined by placing fingers on the #1 rocker arms as the engine assembly alignment mark on the front face of the torsional damper aligns with the arrow on the front cover. If the valves are not moving, the engine is in the #1 firing position. If the valves move the engine is in #4 firing position and should be rotated one revolution to reach the #1 position.

b. With the engine in the #1 firing position, the

following valves may be adjusted:

Exhaust 1, 2, 3
Intake - 1, 5, 6

c. Back out adjusting nut until lash is felt at the pushrod, then turn in adjusting nut until all lash is removed.

(This can be determined by rotating pushrod while turning adjusting nut.) When lash has been removed, turn adjusting nut in 1-1/2 additional turns (to center lifter plunger).

d. Crank the engine one revolution. This is the #4 firing position. With the engine in this position, the following valves may be adjusted:

Exhaust - 4, 5, 6
Intake - 2, 3, 4