Jeep Liberty KJ. Manual — part 921
SEAL-CRANKSHAFT OIL - REAR
DESCRIPTION
The rear crankshaft seal consists of two parts that
reside in a third part, the rear support assembly. The
rear seal is inserted into the rear cup. These pieces
should be assembled WITH OUT removing one from
the other. The rear support assembly, once assem-
bled, should not be separated as well, to reduced pos-
sibility of damage to the internal rear seal lip.
REMOVAL
This must be done with either the engine or transmis-
sion removed from vehicle.
1. Remove flywheel assembly.
2. Paint mark or scribe a witness mark on the engine
block to be used for alignment purposes during
assembly.
3. Pry out old crankshaft oil seal.
INSTALLATION
CAUTION: To prevent potential oil leaks, DO NOT touch or separate the rear crankshaft inner seal from the
seal cup. When replacing the rear crankshaft carrier, DO NOT touch or separate the seal cup from the rear
oil seal. Always handle the components as an assembly and from their outer diameter.
1. Using special tool VM.1050, install rear crankshaft oil seal in rear main bearing support.
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ENGINE - 2.8L DIESEL
KJ
2. Install engine or transmission in vehicle.
KJ
ENGINE - 2.8L DIESEL
9 - 1643
FLEX PLATE-2.8L
REMOVAL
1. Remove the transmission (Refer to 21 - TRANS-
MISSION/TRANSAXLE/AUTOMATIC
-
42RLE
-
REMOVAL),
(Refer
to
21
-
TRANSMISSION/
TRANSAXLE/AUTOMATIC
-
45RFE/545RFE
-
REMOVAL).
2. Paint mark the flex plate hub to flex plate relation.
3. Remove the 40 mm flex plate bolts (1) and flex
plate (2).
4. Inspect flex plate (2) for damage.
INSTALLATION
NOTE: Do Not lubracate new bolts as they are already coated with an anti-scuff treatment.Align the flex
plate to hub paint marks, where applicable.
1. Install the flex plate hub and hand tighten the fasteners.
2. Tighten each flex plate hub fastener to 50 N·m (37 lbs. ft.) in a clockwise cross sequence.
3. At this point, loosen one flex plate adaptor fastener, and with a torque wrench and angle gauge, tighten the
fastener to 25 N·m (19 lbs. ft.), plus 60 degrees.
4. Perform the above procedure for the remaining flex plate adaptor bolts in a clockwise cross sequence.
5. Install the flex plate locating pin.
6. Install the flex plate to the hub and install the fasteners. Tighten the flex plate fasteners in a cross sequence to
44 N·m (32.5 ft. lbs.).
7. Install the transmission (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 42RLE - INSTALLATION),
(Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - INSTALLATION).
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ENGINE - 2.8L DIESEL
KJ
LINERS-CYLINDER
DESCRIPTION
Each cylinder wall liner used on this engine is of the wet design. Coolant is in direct contact with the liner. Three
O-rings are used to seal the liner to the engine block. The top O-rings (black) are water seals and the lower (brown)
seal is an oil seal. The applicable metal shim is used for cylinder liner protrusion. If the liner is to be reused, match
mark the liner and block. Anytime that the liners are removed, replace the O-rings and the shim. If one or more
liners have been replaced the liner protrusion must be measured to determine the proper head gasket selection. If
the liners are not removed, used the same thickness head gasket that was removed.
REMOVAL
CAUTION: To prevent damage to the oil jets,
remove the oil jets before removing the pistons or
liners.
1. Remove engine from vehicle.
2. With engine completely disassembled, use special
tool VM.1001 (1) to remove cylinder liner (2).
3. Tighten bolt on VM.1001 (1) to remove cylinder
liner (2) from engine block (3).
4. Remove shim(s) from cylinder liner (2) or cylinder
block recess. Keep shim(s) with each cylinder liner
(2) until cylinder liner (2) protrusion measurement.
INSPECTION
The cylinder walls should be checked for out-of-round
and taper with a dial bore gauge. The cylinder bore
out-of-round is 0.100 mm (.0039 in.) maximum and
cylinder bore taper is 0.100 mm (.0039 in.) maximum.
If the cylinder walls are badly scuffed or scored, new
liners should be installed and honed, and new pistons
and rings fitted.
Measure the cylinder bore at three levels in directions
A and B. Top measurement should be 10 mm (3/8 in.)
down and bottom measurement should be 10 mm (3/8
in.) up from the bottom bore.
KJ
ENGINE - 2.8L DIESEL
9 - 1645
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