ENGINE MECHANICAL
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 3A-73
Installation
ESTABLISHING TOP DEAD CENTER (TDC)
NOTE: Screw plugs in glow plug holes or glow plugs, if equipped, may be removed to
release compression when turning crankshaft.
Rocker arm assemblies should be installed when each cylinder is at TDC to avoid damaging
the valve train components. If the position of the crankshaft has moved since parts were
removed, it may be necessary to establish TDC, if not already known, BEFORE installing
the rocker arm assemblies.
1. Remove 3 opposing retaining bolts from the vibration damper (balancer).
2. Using balancer bolts or suitable, attach crankshaft tool 91-814827 to crankshaft
balancer.
70485
a
a-Crankshaft Tool
3. Align crankshaft and timing mark as follows:
a. Temporarily insert a push rod into both cylinder number 1 lifters.
b. Slowly rotate the crankshaft CLOCKWISE while watching the first valve push rod
(front-most is cylinder number 1 intake valve). Continue to rotate the engine until
after the intake valve has opened (valve push rod moved up) and then CLOSED
(valve push rod moved down).
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