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.
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.
DIAGNOSIS AND TESTING - ENGINE OIL LEAK
Begin with a thorough visual inspection of the engine, particularly at thearea of the suspected leak. If an oil leak
source is not readily identifiable, thefollowingstepsshouldbefollowed:
1. Do not clean or degrease the engine at this time because some solvents maycause rubber to swell, temporarily
stopping the leak.
2. Add an oil soluble dye (use as recommended by manufacturer). Start the engine and let idle for approximately 15
minutes. Check the oil dipstick to make sure the dye is thoroughly mixed as indicated with a bright yellow color
under a black light.
3. Using a black light, inspect the entire engine for fluorescent dye, particularly at the suspected area of oil leak. If
the oil leak is found and identified, repair per service manual instructions.
4. If dye is not observed, drive the vehicle at various speeds for approximately 24 km (15 miles), and repeat inspec-
tion.If the oil leak source is not positively identified at this time, proceed with the air leak detection test method.
Air Leak Detection Test Method
1. Disconnect the breather cap to air cleaner hose at the breather cap end. Cap or plug breather cap nipple.
2. Remove the PCV valve from the cylinder head cover. Cap or plug the PCV valvegrommet.
3. Attach an air hose with pressure gauge and regulator to the dipstick tube.
CAUTION: Do not subject the engine assembly to more than 20.6 kPa (3 PSI) of test pressure.
4. Gradually apply air pressure from 1 psi to 2.5 psi maximum while applyingsoapy water at the suspected source.
Adjust the regulator to the suitable test pressure that provide the best bubbles which will pinpoint the leak
source. If the oil leak is detected and identified, repair per service manual procedures.
5. If the leakage occurs at the rear oil seal area, refer to the section, Inspection for Rear Seal Area Leak.
6. If no leaks are detected, turn off the air supply and remove the air hose and all plugs and caps. Install the PCV
valve and breather cap hose.
7. Clean the oil off the suspect oil leak area using a suitable solvent. Drive the vehicle at various speeds approx-
imately 24 km (15 miles). Inspect the engine for signs of an oil leak by usinga black light.
INSPECTION FOR REAR SEAL AREA LEAKS
Since it is sometimes difficult to determine the source of an oil leak in therear seal area of the engine, a more
involved inspection is necessary. The following steps should be followedto help pinpoint the source of the leak.
If the leakage occurs at the crankshaft rear oil seal area:
1. Disconnect the battery.
2. Raise the vehicle.
3. Remove torque converter or clutch housing cover and inspect rear of block for evidence of oil. Use a black light
to check for the oil leak:
a. Circular spray pattern generally indicates seal leakage or crankshaftdamage.
b. Where leakage tends to run straight down, possible causes are a porous block, oil galley pipe plugs, oil filter
runoff, and main bearing cap to cylinder block mating surfaces.
4. If no leaks are detected, pressurize the crankcase as outlined in the, Inspection (Engine oil Leaks in general)
CAUTION: Do not exceed 20.6 kPa (3 psi).
5. If the leak is not detected, very slowly turn the crankshaft and watch forleakage. If a leak is detected between
the crankshaft and seal while slowly turning the crankshaft, it is possible the crankshaft seal surface is damaged.
The seal area on the crankshaft could have minor nicks or scratches that canbe polished out with emery cloth.
CAUTION: Use extreme caution when crankshaft polishing is necessary to remove minor nicks and
scratches. The crankshaft seal flange is especially machined to complement the function of the rear oil seal.
6. For bubbles that remain steady with shaft rotation, no further inspection can be done until disassembled.
INSTALLATION
NOTE: Do not use air tools to install engine lift fix-
ture (2) special tool # 8984.
1. Install engine lift fixture (2), special tool # 8984.Do
not use adapter (4).
2. Position the engine in the engine compartment.
3. Lower engine into compartment and align engine
with transmission:
Manual Transmission: Align clutch disc assembly
(if disturbed). Install transmission input shaft into
clutch disc while mating engine and transmission
surfaces. Install two transmission to engine block
mounting bolts finger tight.
Automatic Transmission: Mate engine and trans-
mission and install two transmission to engine
block mounting bolts finger tight.
4. Position the thru-bolt into the support cushion
brackets.
5. Lower engine assembly until engine mount through
bolts rest in mount perches.
6. Install remaining transmission to engine block
mounting bolts (2) and tighten.
SEAL - CRANKSHAFT OIL - REAR
DIAGNOSIS AND TESTING - REAR SEAL AREA LEAKS
Since it is sometimes difficult to determine the source of an oil leak in therear seal area of the engine, a more
involved inspection is necessary. The following steps should be followedto help pinpoint the source of the leak.
If the leakage occurs at the crankshaft rear oil seal area:
1. Disconnect the battery.
2. Raise the vehicle.
3. Remove torque converter or clutch housing cover and inspect rear of block for evidence of oil. Use a black light
to check for the oil leak:
a. Circular spray pattern generally indicates seal leakage or crankshaftdamage.
b. Where leakage tends to run straight down, possible causes are a porous block, camshaft bore cup plugs, oil
galley pipe plugs, oil filter runoff, and main bearing cap to cylinder block mating surfaces. See Engine, for
proper repair procedures of these items.
4. If no leaks are detected, pressurized the crankcase as outlined in the section, Inspection (Engine oil Leaks in
general)
CAUTION: Do not exceed 20.6 kPa (3 psi).
5. If the leak is not detected, very slowly turn the crankshaft and watch forleakage. If a leak is detected between
the crankshaft and seal while slowly turning the crankshaft, it is possible the crankshaft seal surface is damaged.
The seal area on the crankshaft could have minor nicks or scratches that canbe polished out with emery cloth.
CAUTION: Use extreme caution when crankshaft polishing is necessary to remove minor nicks or
scratches. The crankshaft seal flange is specially machined to complement the function of the rear oil seal.
6. For bubbles that remain steady with shaft rotation, no further inspection can be done until disassembled. (Refer
to 9 - ENGINE - DIAGNOSIS AND TESTING), under the Oil Leak row, for components inspections on possible
causes and corrections.
7. After the oil leak root cause and appropriate corrective action have been identified, (Refer to 9 - ENGINE/EN-
GINE BLOCK/CRANKSHAFT OIL SEAL - REAR - REMOVAL).
REMOVAL
NOTE: This procedure can be performed in vehi-
cle.
1. If being performed in vehicle, remove the transmis-
sion.
2. Remove the flexplate (Refer to 9 - ENGINE/EN-
GINE BLOCK/FLEX PLATE - REMOVAL).
NOTE: The crankshaft oil seal CAN NOT be reused
after removal.
NOTE: The crankshaft rear oil seal remover Spe-
cial Tool 8506 must be installed deeply into the
seal. Continue to tighten the removal tool into the
seal until the tool can not be turned farther. Fail-
ure to install tool correctly the first time will cause
tool to pull free of seal without removing seal from
engine.
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.
OPERATION
The structural cover provides additional powertrain stiffness and reduces noise and vibration.
REMOVAL
1. Raise vehicle on hoist.
CAUTION: On manual transmission vehicles, the
7/16 inch engine block to clutch housing bolts
must be loosened before removal of the structural
dust cover (1). Clutch housing distortion will occur
if this procedure is not followed.
2. Remove the bolts retaining structural cover (1,2).
3. Remove the structural cover.
INSTALLATION
AUTOMATIC TRANSMISSION
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 retaining the cover-to-engine. DO NOT tighten the bolts at this time.
3. Install the four cover-to-transmission bolts. Do NOT tighten at this time.
CAUTION: The structural cover must be held tightly against both the engineand the transmission bell hous-
ing during tightening sequence. Failure to do so may cause damage to the cover.
4. Torque the (4) structural dust cover bolts that go
intothetransmissionto6-11Nꞏm(50-100in.lbs.).
5. Torque the (4) structural dust cover bolts that go
into the engine block to 6-11 Nꞏm (50-100 in.lbs.).
6. Starting with the two rearcover-to-engine bolts,
tighten bolts (1) to 54 Nꞏm (40 ft. lbs.), then tighten
bolts(2)and(3)to54Nꞏm(40ft.lbs.)inthe
sequence shown.
7. Install the exhaust pipe on left hand exhaust manifold.
8. Tighten exhaust manifold-to-exhaust pipe retaining bolts to 20–26 Nꞏm(15–20 ft. lbs.).
MANUAL TRANSMISSION
CAUTION: The 7/16 inch engine block to clutch housing bolts must be loosened before removal/installation
of the structural dust cover. Clutch housing distortion will occur if thisprocedure is not followed.
1. Position the structural cover in the vehicle.
CAUTION: The structural cover must be installed as described in the following steps. Failure to do so will
cause severe damage to the cover, and engine noise.
2. Install all bolts retaining the cover-to-engine. DO
NOT tighten the bolts at this time.
3. Install the cover-to-transmission bolts. Do NOT
tighten at this time.
CAUTION: The structural cover must be held
tightly against the corner formed by the engine
and the transmission clutch housing during tight-
ening sequence. Failure to do so may cause dam-
age to the cover and engine noise.
4. Torque the (2) structural dust cover bolts that go
into the clutch housing to 6-11 Nꞏm (50-100 in.lbs.).
5. Torque the (4) structural dust cover bolts that go
into the engine block to 6-11 Nꞏm (50-100 in.lbs.).
6. Torque the structural cover bolt that is closest to
the rear face of block on the passenger side of
blockto54Nꞏm(40ft.lbs.).
7. Torque the structural cover bolt that is closest to
the front face of block on the drivers side to 54
Nꞏm (40 ft. lbs.).
8. Torque the remaining (2) structural cover bolts that
go into theblockin an “X” pattern to 54 Nꞏm (40 ft.
lbs.).
9. Torque the structural cover bolts that go into theclutch housingto 54 Nꞏm (40 ft. lbs.).
10. Torque the 7/16 inch engine block to clutch housing bolts to 68 Nꞏm (50 ft.lbs.).