Valve Timing - Jeep 1987 Wrangler Workshop Manual

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ENGINES
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2.46 LITER (150 CID) FOUR-CYLINDER ENGINE
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Install a dial indicator (1) with a piece of rubber
tubing (2) between the dial indicator plunger and
the push rod (3). Use Dial Indicator Set J-8520
or equivalent.
Rotate the crankshaft until the heel of the cam
lobe (push rod in the down position) is under the
valve tappet. Set the dial indicator pointer at
zero.
Rotate the crankshaft until the push rod is at its
maximum upward position.
Note the travel distance on the dial indicator.
Refer to the Specifications chart for the correct
cam lobe lift.
Repeat the procedure for each remaining cam
lobe.
Install the rocker arms and bridge and pivot
assemblies. Alternately tighten the capscrews
at each bridge, one turn at a time, to avoid
damaging the bridges.
Install the spark plugs and connect the wire
connectors.
Install the cylinder head cover. Refer to the
installation procedure.
Waive Timing
Disconnect the spark plug wire connectors and
remove the spark plugs.
Remove the cylinder head cover. Refer to
C y l i n d e r H e a d C o v e r R e m o v a l for the
procedure.
Remove the bridge and pivot assembly and
rocker arms from above the No. 1 cylinder.
Rotate the crankshaft until No. 4 piston is at top
dead center (TDC) on the compression stroke.
Rotate the crankshaft counterclockwise (viewed
from the front of the engine) 90 degrees.
Install Dial Indicator Set J-8520 (or equivalent)
on the end of the No. 1 cylinder intake valve
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