Vibration Damper And Pulley Removal; Vibration Damper And Pulley Installation - Jeep 1987 Wrangler Workshop Manual

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ENGINES
2.46 LITER (150 CID) FOUR-CYLINDER ENGINE
push rod. Use rubber tubing to secure the stem
on the push rod.
Set the dial indicator pointer at zero.
Rotate the crankshaft clockwise (viewed from
the front of the engine) until the dial indicator
pointer indicates 0.305mm (0.012-in) travel
distance (lift).
The timing notch index on the vibration damper
should be aligned with the T D C mark on the
timing degree scale.
If the timing notch is more than 13mm (1/2-in)
away from the T D C mark in either direction, the
valve timing is incorrect.
If the valve timing is incorrect, the cause may be
a broken camshaft pin. It is not necessary to
replace the camshaft because of pin failure. A
spring pin is available for service replacement.
VIBRATION
DAMPER AND PULLEY REMOVAL
Remove the drive belt(s).
Remove the retaining bolts and separate the
vibration damper pulley from the vibration
damper.
Remove the vibration damper retaining bolt and
washer.
Use Vibration Damper Removal Tool J-21791-
01 to remove the damper from the crankshaft.
VilRATlON DAMPER A N D PULLEY
INSTALLATION
With the key in position, align the key slot in the
vibration damper hub with the crankshaft key
and tap the damper onto the end of the
crankshaft.
Install the vibration damper retaining bolt and
washer. Tighten the bolt with 108 N-m (80 ft-lbs)
torque.
NOTE: If the crankshaft turns before the damper
bolt tightening torque value is attained, the
crankshaft can be prevented from turning by
placing two 5 / 1 6 x 1
1
/
2
inch bolts into the damper
pulley holes and wedging a bar between them.
Rotate the bar until it contacts the frame
member to prevent the crankshaft from turning.
Install the damper pulley and retaining bolts.
Tighten the bolts with 27 N-m (20 ft-lbs) torque.
Install the drive belt(s) and tighten to the
specified tension. Refer to the Cooling Systems
section.
B-63