Page 1713 of 5267

INSTALLATION
CAUTION: To prevent severe damage to the Crank-
shaft, Damper or Special Tool 8512–A, thoroughly
clean the damper bore and the crankshaft nose
before installing Damper.
1. Align crankshaft damper slot with key in crankshaft.
Slide damper onto crankshaft slightly.
CAUTION: Special Tool 8512–A, is assembled in a
specific sequence. Failure to assemble this tool in
this sequence can result in tool failure and severe
damage to either the tool or the crankshaft.
2. Assemble Special Tool 8512–A as follows, The nut
(2) is threaded onto the shaft first. Then the roller
bearing (1) is placed onto the threaded rod (3)
(The hardened bearing surface of the bearing (1)
MUSTface the nut (2). Then the hardened washer (5) slides onto the threaded rod.Once assembled coat the
threaded rod’s threads with Mopar
Nickel Anti-Seize or equivalent.
3. Using Special Tool 8512–A, press damper onto
crankshaft (1).
4. Install then tighten crankshaft damper bolt to 175
Nꞏm (130 ft. lbs.).
5. Install fan blade assembly (Refer to 7 - COOLING/
ENGINE/FAN DRIVE VISCOUS CLUTCH -
INSTALLATION).
6. Install radiator upper shroud and tighten fasteners
to 11 Nꞏm (95 in. lbs.).
7. Connect electrical connector for shroud fan.
8. Install radiator upper hose.
9. Install accessory drive belt (Refer to 7 - COOLING/
ACCESSORY DRIVE/DRIVE BELTS - INSTALLA-
TION).
10. Refill cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
11. Connect negative cable to battery.
Page 1714 of 5267

COVER - STRUCTURAL
DESCRIPTION
The structural dust cover is made of die cast aluminum and joins the lower half of the transmission bell housing to
the engine bedplate.
OPERATION
The structural cover provides additional powertrain stiffness and reduces noise and vibration.
REMOVAL
1. Raise vehicle on hoist.
2. Remove the left hand exhaust pipe from exhaust
manifold.
3. Loosen the right hand exhaust manifold-to-exhaust
pipe retaining bolts.
4. Remove the eight bolts (1,2,3) retaining structural
cover in the sequence shown.
5. Pivot the exhaust pipe downward and remove the
structural cover.
INSTALLATION
CAUTION: The structural cover must be installed
as described in the following steps. Failure to do
so will cause severe damage to the cover.
1. Position the structural cover in the vehicle.
2. Install all four bolts (1,2,3)retaining the cover-to-en-
gine . DO NOT tighten the bolts at this time.
3. Install the four cover-to-transmission bolts (1,2,3).
Do NOT tighten at this time.
CAUTION: The structural cover must be held
tightly against both the engine and the transmis-
sion bell housing during tightening sequence. Fail-
ure to do so may cause damage to the cover.
4. Starting with the two rearcover-to-engine bolts,
tighten bolts (1) to 54 Nꞏm (40 ft. lbs.), then tighten bolts (2) and (3) to 54Nꞏm ( 40 ft. lbs.) in the sequence
shown.
5. Install the exhaust pipe on left hand exhaust manifold.
6. Tighten exhaust manifold-to-exhaust pipe retaining bolts to 20–26 Nꞏm(15–20 ft. lbs.).
Page 1715 of 5267

MOUNT - FRONT
REMOVAL
2WD
1. Disconnect the negative cable from the battery.
CAUTION: Remove the viscous fan before raising engine. Failure to do so maycause damage to the fan
blade, fan clutch and fan shroud.
2. Remove the viscous fan (Refer to 7 - COOLING/ENGINE/FAN DRIVE VISCOUS CLUTCH - REMOVAL).
3. Raise the vehicle.
4. Remove the engine oil filter.
5. Remove the oil drain trough.
6. Support the engine with a suitable jack and a block of wood across the fullwidth of the engine oil pan.
7. Support the front axle with a suitable jack.
8. Remove the (4) bolts that attach the engine mounts to the front axle.
9. Remove the (3) bolts that attach the front axle to the left engine bracket.
10. Lower the front axle.
11. Remove the through bolts
12. Raise the engine far enough to be able to remove the left and right enginemounts.
13. Remove the (8) mount to engine attaching bolts
14. Remove the engine mounts.
4WD
1. Disconnect the negative cable from the battery.
2. Remove the viscous fan.
3. Raise the vehicle.
4. Removetheskidplate.
Page 1716 of 5267
5. Remove the front crossmember.
6. Remove the engine oil filter.
7. Remove the oil drain trough.
8. Support the engine with a suitable jack and a block of wood across the fullwidth of the engine oil pan.
9. Support the front axle with a suitable jack.
10. Remove the 4 bolts that attach the engine mounts to the front axle (6).
11. Remove the 3 bolts (3) that attach the front axle to the left engine bracket.
12. Lower the front axle.
13. Remove the through bolts
14. Raise the engine far enough to be able to remove the left and right enginemounts.
15. Remove the engine mounts (4,8).
Page 1717 of 5267
16. Remove the engine mount brackets (2).
INSTALLATION
2WD
NOTE: For mount to engine block and left engine bracket to front axle bolts,apply MoparLock and Seal
Adhesive, Medium Strength Threadlocker.
1. Install the right and left side engine mounts to the engine block with (8)bolts. Torque bolts to 54 Nꞏm (40 ft. lbs.).
2. Insert the (2) through bolts into the right and left side engine mounts and loose assemble the two nuts onto the
through bolts.
3. Lower the engine until the through bolts rest onto the slots in the frame brackets.
4. Tighten the through bolt nuts to 94 Nꞏm (70 ft. lbs.).
5. Install the oil drain trough.
6. Install the engine oil filter.
7. Lower the vehicle.
8. Install the viscous fan (Refer to 7 - COOLING/ENGINE/FAN DRIVE VISCOUS CLUTCH - REMOVAL).
9. Reconnect the negative battery cable.
Page 1718 of 5267

4WD
NOTE: For mount to engine block and left engine bracket to front axle bolts,apply MoparLock and Seal
Adhesive, Medium Strength Threadlocker.
1. Install the right and left side engine mounts (4,8) to the front axle (6).Torquenutsto94Nꞏm(70ft.lbs.).
2. Raise the front axle into the frame and install the left and right side through bolts. Torque nuts to 94 Nꞏm (70 ft.
lbs.).
3. Insert the two upper through bolts into the right and left side engine mounts and loose assemble the two nuts
onto the through bolts.
4. Lower the engine until the left and right side engine brackets rest on thethrough bolts, and the lower engine
bracket through holes align with the engine mounts, and the left engine bracket holes align with the front axle
slots.
5. Loose assemble the (3) bolts that attach the front axle to the left enginebracket.
6. Loose assemble the lower through bolts.
7. Torque the nuts for the (4) through bolts to 101 Nꞏm (75 ft. lbs.).
8. Torque the (3) bolts that attach the front axle to the left engine bracketto 101 Nꞏm (75 ft. lbs.).
9. Install the oil drain trough.
10. Install the engine oil filter.
11. Install the front crossmember.
12. Install the skid plate.
13. Lower the vehicle.
14. Install the viscous fan (Refer to 7 - COOLING/ENGINE/FAN DRIVE VISCOUSCLUTCH - REMOVAL).
15. Reconnect the negative battery cable.
Page 1719 of 5267
MOUNT - REAR
REMOVAL
1. Raise the vehicle on a hoist.
2. Using a suitable jack, support transmission.
3. Remove the nuts from the transmission mount (1).
4. Remove the two bolts that attach the transmission
mount to the engine bracket.
5. Raise the transmission enough to remove the
mount from the crossmember (2).
6. Remove the mount (1).
INSTALLATION
NOTE: Threadlocking compound must be applied to the bolts before installation.
1. Install the two bolts that attach the transmission mount to the transmission bracket.
2. Torque the bolts to 61Nꞏm (45 ft.lbs.) torque.
3. Lower the transmission so the transmission mount rests on the crossmember, and the studs of the transmission
mount are aligned in the slots in the crossmember.
4. Install the nuts onto the transmission mount studs through the crossmember access slot.
5. Torque the nuts to 54Nꞏm (40 ft. lbs.).
Page 1720 of 5267

LUBRICATION
DESCRIPTION
The lubrication system is a full flow filtration pressure feed type.
OPERATION
Oil from the oil pan is pumped by a gerotor type oil pump directly mounted to the crankshaft nose. Oil pressure is
controlled by a relief valve mounted inside the oil pump housing.
The camshaft exhaust valve lobes and rocker arms are lubricated through a small hole in the rocker arm; oil flows
through the lash adjuster then through the rocker arm and onto the camshaftlobe. Due to the orentation of the
rocker arm, the camshaft intake lobes are not lubed in the same manner as theexhaust lobes. The intake lobes are
lubed through internal passages in the camshaft. Oil flows through a bore in the number 3 camshaft bearing bore,
and as the camshaft turns, a hole in the camshaft aligns with the hole in the camshaft bore allowing engine oil to
enter the camshaft tube. The oil then exits through 1.6mm (0.063 in.) holesdrilled into the intake lobes, lubricating
the lobes and the rocker arms.