Jeep Cherokee 2000, Service Manual

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(6) Install the timing case cover-to-cylinder block
and the oil pan-to-timing case cover bolts.
(7) 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 bolts to 9.5 N·m (84 in.
lbs.) torque.
(8) Remove the cover alignment tool.
(9) Apply a light film of engine oil on the vibration
damper hub contact surface of the seal.
(10) Apply Mopar Silicone Rubber Adhesive Seal-
ant to the keyway in the crankshaft and insert the
key. With the key inserted in the keyway in the
crankshaft, install the vibration damper, washer and
bolt. Lubricate and tighten the bolt to 108 N·m (80 ft.
lbs.) torque.
(11) Install the A/C compressor (if equipped) and
generator bracket assembly.
(12) Install the engine fan and hub assembly and
shroud.
(13) Install the accessory drive belt and tighten to
obtain the specified tension.
(14) Connect negative cable to battery.
TIMING CHAIN AND SPROCKETS
The chain drive system ie equipped with a timing
chain tensioner which reduces noise and prolongs
timing chain life. In addition, it compensates for
wear and temperature changes on the valve train for
proper engine operation.
REMOVAL
(1) Disconnect negative cable from battery.
(2) Remove the fan and shroud.
(3) Remove the serpentine drive belt.
(4) Remove the crankshaft vibration damper.
(5) Remove the timing case cover.
(6) Rotate crankshaft until the “0” timing mark is
closest to and on the center line with camshaft
sprocket timing mark (Fig. 65).
(7) Remove the oil slinger from the crankshaft.
(8) Remove
the camshaft retaining bolt and
remove the sprockets and chain as an assembly (Fig.
66).
(9) To replace the timing chain tensioner, the oil
pan must be removed.
INSTALLATION
(1) Turn the tensioner lever to the unlocked (down)
position (Fig. 67).
(2) Pull the tensioner block toward the tensioner
lever to compress the spring. Hold the block and turn
the tensioner lever to the lock position (Fig. 67).
(3) Apply Mopar Silicone Rubber Adhesive Sealant
to the keyway in the crankshaft and insert the key.
With the key in the crankshaft keyway, install the
crankshaft, camshaft sprockets and timing chain.
Ensure the timing marks on the sprockets are prop-
erly aligned (Fig. 65).
(4) Install the camshaft sprocket retaining bolt
and washer. Tighten the bolt to 108 N·m (80 ft. lbs.)
torque.
(5) To verify correct installation of the timing
chain, turn the crankshaft to position the camshaft
sprocket timing mark as shown in (Fig. 68). Count
the number of chain pins between the timing marks
of both sprockets. There must be 20 pins.
(6) Turn the chain tensioner lever to the unlocked
(down) position (Fig. 67).
(7) Install the oil slinger.
(8) Replace the oil seal in the timing case cover.
(9) Install the timing case cover and gasket.
Fig. 65 Crankshaft—Camshaft Alignment
1 – TIMING MARKS
Fig. 66 Camshaft and Crankshaft Sprockets and
Chain
1 – CAMSHAFT SPROCKET
2 – CRANKSHAFT SPROCKET
3 – CHAIN
XJ
2.5L ENGINE 9 - 43
REMOVAL AND INSTALLATION (Continued)