Page 1707 of 5267

INSPECTION
Check the connecting rod journal for excessive wear, taper and scoring (Refer to 9 - ENGINE/ENGINE BLOCK/
CONNECTING ROD BEARINGS - STANDARD PROCEDURE).
Check the connecting rod for signs of twist or bending.
Check the piston for taper and elliptical shape before it is fitted into thecylinder bore (Refer to 9 - ENGINE/ENGINE
BLOCK/PISTON & CONNECTING ROD - STANDARD PROCEDURE).
Check the piston for scoring, or scraping marks in the piston skirts. Checkthe ring lands for cracks and/or deteri-
oration.
INSTALLATION
1. Before installing piston and connecting rod assem-
blies into the bore, install the piston rings.
2. Immerse the piston head and rings in clean engine
oil. Position a ring compressor (3) over the piston
and rings. Tighten ring compressor.Ensure posi-
tion of rings do not change during this opera-
tion.
3. Position bearing onto connecting rod. Ensure that
hole in bearing shell aligns with hole in connecting
rod. Lubricate bearing surface with clean engine
oil.
4. Install Special Tool 8507 Connecting Rod Guides
(4) into connecting rod bolt threads.
Page 1708 of 5267

5. The pistons are marked on the piston pin bore sur-
face with an raised “F” indicating installation posi-
tion (1). This mark must be pointing toward the
front of engine on both cylinder banks. The con-
necting rod oil slinger slot faces the front of the
engine.
6. Wipe cylinder bore clean and lubricate with engine
oil.
7. Rotate crankshaft until connecting rod journal is on
the center of cylinder bore. Insert rod and piston
into cylinder bore and carefully position connecting
rod guides over crankshaft journal.
8. Tap piston down in cylinder bore using a hammer
handle. While at the same time, guide connecting
rodintopositiononrodjournal.
CAUTION: Connecting Rod Bolts are Torque to
Yield Bolts and Must Not Be Reused. Always
replace the Rod Bolts whenever they are loosened
or removed.
9. Lubricate rod bolts and bearing surfaces with
engine oil. Install connecting rod cap and bearing. Tighten bolts to 27 Nꞏm(20 ft. lbs.) plus 90°.
10. Install the following components:
Cylinder head(s). (Refer to 9 - ENGINE/CYLINDER HEAD - INSTALLATION).
Timing chain and cover. (Refer to 9 - ENGINE/VALVE TIMING/TIMING BELT / CHAIN COVER(S) - INSTAL-
LATION).
Cylinderheadcovers(Referto9-ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - INSTALLA-
TION).
Oil pan and gasket/windage tray. (Refer to 9 - ENGINE/LUBRICATION/OIL PAN- INSTALLATION).
11. Fill crankcase with proper engine oil to correct level.
12. Connect negative cable to battery.
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.