Express 1/2 Ton Van V8-5.7L VIN R (1999)
5. Turn the crankshaft clockwise 1 revolution until the alignment mark on the crankshaft balancer is aligned with the notch in the engine front cover
tab.
6. With the engine in the number 6 firing position, adjust the exhaust valves for cylinders number 2, 5, 6, and 7 and the intake valves for cylinders
number 3, 4, 6, and 8.
6.1.
Turn the valve rocker arm nut counter clockwise until the valve lash is felt in the valve pushrod.
6.2.
Turn the valve rocker arm nut clockwise until all the valve lash is removed (zero valve lash).
Zero valve lash can be felt by moving the valve pushrod up and down between your thumb and forefinger until there is no more up and
down movement of the valve push rod.
6.3.
When all the valve lash is removed, then turn the valve rocker arm nut clockwise 1 additional turn (360°).
