Jeep 1996 Grand Cherokee Service Manual page 976

ZJ
REMOVAL AND INSTALLATION (Continued)
the number of chain pins between the timing marks
of both sprockets. There must be 15 pins.
Fig. 44 Verify Crankshaft—Camshaft Installation—
(6) Install the crankshaft oil slinger.
(7) Tighten the camshaft sprocket preload bolt to
108 N·m (80 ft. lbs.) torque.
(8) Check the valve timing.
(9) Lubricate the tension spring, the thrust pin
and the pin bore in the preload bolt with Mopar
Engine Oil Supplement, or equivalent. Install the
spring and thrust pin in the preload bolt head.
(10) Coat both sides of the replacement timing
case cover gasket with gasket sealer. Apply a 3 mm
(1/8 inch) bead of Mopar Silicone Rubber Adhesive
Sealant, or equivalent to the joint formed at the oil
pan and cylinder block.
(11) Position the timing case cover on the oil pan
gasket and the cylinder block.
(12) Place Timing Case Cover Alignment and Seal
Installation Tool 6139 in the crankshaft opening in
the cover (Fig. 45).
(13) Install the timing case cover-to-cylinder block
bolts. Install the oil pan-to-timing case cover bolts.
(14) Tighten the 1/4 inch cover-to-block bolts to 7
N·m (60 in. lbs.) torque. Tighten the 5/16 inch front
cover-to-block bolts to 22 N·m (192 in. lbs.) torque.
Tighten the oil pan-to-cover 1/4 inch bolts to 14 N·m
(120 in. lbs.) torque. Tighten the oil pan-to-cover 5/16
inch bolts to 18 N·m (156 in. lbs.) torque.
(15) Remove the cover alignment tool and install a
replacement oil seal into the cover.
(16) Install the vibration damper on the crank-
shaft.
Typical
Fig. 45 Timing Case Cover Alignment and Seal
Installation Tool 6139
(17) Lubricate and tighten the damper bolt to 108
N·m (80 ft. lbs.) torque.
(18) If equipped with air conditioning:
(a) Install the A/C compressor serpentine drive
belt idler pulley.
(b) Install the generator.
(c) Install the A/C condenser and receiver/drier
assembly.
(19) Install the serpentine drive belt on the pulleys
and tighten (refer to Group 7, Cooling System for the
specifications and procedures).
(20) Install the radiator. Connect the radiator
hoses and automatic transmission fluid cooler pipes,
if equipped. Fill the cooling system.
(21) Install the fan and shroud.
(22) Connect negative cable to battery.
CRANKSHAFT MAIN BEARINGS
REMOVAL
(1) Disconnect negative cable from battery.
(2) Remove the spark plugs.
(3) Raise the vehicle.
(4) Remove the oil pan and oil pump.
(5) Remove only one main bearing cap and lower
insert at a time (Fig. 46).
(6) Remove the lower insert from the bearing cap.
(7) Remove the upper insert by LOOSENING (DO
NOT REMOVE) all of the other bearing caps. Now
insert a small cotter pin tool in the crankshaft jour-
nal oil hole. Bend the cotter pin as illustrated to fab-
ricate the tool (Fig. 47). With the cotter pin tool in
place, rotate the crankshaft so that the upper bear-
ing insert will rotate in the direction of its locking
tab. Because there is no hole in the No.3 main jour-
nal, use a tongue depressor or similar soft-faced tool
to remove the bearing insert (Fig. 47). After moving
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