VPA 7748089 English 09-2007 59
Engine — 5.0 & 5.7 Litre
Install Rocker Arm Assemblies
2. Install the following components:
• Install the valve rocker arms (3)
• Install the rocker arm balls (2)
• Install the valve rocker arm nuts (1)
Valve Lash Adjustment
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 posi-
tion, the engine is in the number 6 firing position. If this hap-
pens, turn the crankshaft clockwise one revolution in order to
reach the number 1 firing position.
4. With the engine in the number 1 cylinder firing position, adjust
the exhaust valves for cylinder numbers 1, 3, 4, and 8 and the
intake valves for cylinder numbers 1, 2, 5, and 7 using the fol-
lowing process:
• Turn the valve rocker arm nut counterclockwise until the
valve lash is felt in the valve pushrod.
• 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 pushrod up and down between you thumb and
forefinger until there is no more up and down movement of
the pushrod.
• When all the valve lash is removed, then turn the valve
rocker arm nut clockwise 1 additional turn (360°)
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