Service manual

Valve Lash Adjustment
SIE-ID = 194734
1. Turn the valve rocker arm nuts clockwise until all
of the valve lash is removed.
2. Turn the crankshaft clockwise until the alignment
mark on the crankshaft balancer is aligned with
the notch in the engine front cover tab.
3. Look at the number 1 cylinder valves as the
crankshaft balancer alignment mark approaches
the notch in the engine front cover tab. If a
valve moves as the alignment mark moves into
position, the engine is in the number 6 firing
position. If this happens, turn the crankshaft
clockwise 1 revolution in order to reach the
number 1 cylinder firing position.
4. With the engine in the number 1 firing position,
adjust the exhaust valves for cylinders
number 1, 3, 4, and 8 and the intake valves for
cylinders number 1, 2, 5, and 7.
4.1. Turn the valve rocker arm nut counter
clockwise until the valve lash is felt in the
valve pushrod.
4.2. Turn the valve rocker arm nut clockwise
until all the valve lash is removed.
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.
4.3. When all the valve lash is removed, then
turn the valve rocker arm nut clockwise
1 additional turn (360 degrees).
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.
195336
22759
195336
Engine Engine Mechanical - 5.0L and 5.7L 6-129
2002 - Unit Repair (May 25, 2001)