Jeep Cherokee 2000 Service Manual - page 1028
(2) Pry out the seal from around the crankshaft
flange, making sure not to scratch or nick the crank-
shaft. (Fig. 88).
INSTALLATION
(1) Wipe the seal surface area of the crankshaft
until it is clean.
(2) Coat the outer lip of the replacement rear main
bearing seal with engine oil.
(3) Carefully position the seal into place. Use rear
main Seal Installer Tool 6271A to install the seal
flush with the cylinder block.
CAUTION: The felt lip must be located inside the
flywheel mounting surface. If the lip is not posi-
tioned correctly the flywheel could tear the seal.
(4) Install the flywheel or converter drive plate.
New bolts MUST be used when installing the fly-
wheel or converter plate. Tighten the new bolts to 68
N·m (50 ft. lbs.) torque. Turn the bolts an additional
60°.
DISASSEMBLY AND ASSEMBLY
CYLINDER BLOCK
DISASSEMBLY
(1) Drain the engine oil. Remove and discard the
oil filter.
(2) Remove the water pump from the cylinder
block.
(3) Remove the distributor from the cylinder block.
(4) Remove the vibration damper.
(5) Remove the timing case cover and lay the cover
upside down.
(6) Position a drift punch into the slot in the back
of the cover and tap the old seal out.
(7) Remove the timing chain bumper.
(8) Remove the oil slinger from crankshaft.
(9) Remove
the
camshaft
retaining
bolt
and
remove the sprockets and chain as an assembly.
(10) Remove the camshaft.
(11) Remove the oil pan and gasket.
(12) Remove the timing chain tensioner.
(13) Remove the front and rear oil galley plugs.
(14) Remove the connecting rods and the pistons.
Remove the connecting rod and piston assemblies
through the top of the cylinder bores.
(15) Remove the crankshaft.
ASSEMBLY
(1) Install the crankshaft.
(2) Install the connecting rods and the pistons
through the top of the cylinder bores.
(3) Install the front and rear oil galley plugs.
(4) Install the timing chain tensioner.
(5) Install the camshaft.
(6) Install the sprockets and chain as an assembly.
(7) Install the oil slinger to the crankshaft.
(8) Install the timing chain bumper.
(9) Install the timing case cover seal.
(10) Install the timing case cover.
(11) Install the oil pan gasket and oil pan.
(12) Install the vibration damper.
(13) Install the water pump. Tighten the mounting
bolts to 31 N·m (270 in. lbs.) torque.
(14) Remove the distributor from the cylinder
block.
(15) Lubricate the oil filter seal with clean engine
oil. Tighten oil filter to 18 N·m (13 ft. lbs.) torque.
(16) Install the engine into the vehicle.
(17) Fill the engine with clean lubrication oil.
(18) Fill the cooling system.
CLEANING AND INSPECTION
ROCKER ARMS AND PUSH RODS
CLEANING
Clean all the components with cleaning solvent.
Use compressed air to blow out the oil passages in
the rocker arms and push rods.
INSPECTION
Inspect the pivot surface area of each rocker arm.
Replace any that are scuffed, pitted, cracked or
excessively worn.
Fig. 88 Replacement of Rear Crankshaft Oil Seal
1 – CRANKSHAFT
2 – CRANKSHAFT OIL SEAL
XJ
2.5L ENGINE
9 - 53
REMOVAL AND INSTALLATION (Continued)