Fig. 7: Checking Vertical Alignment Of 2-Piece Drive Shaft
Courtesy of Chrysler Corp.
ADJUSTING VERTICAL ANGLE
If front angle minus rear angle is greater than one degree
positive (+1 degree), rear angle is too small and must be increased.
If front angle minus rear angle is greater than one degree negative (-
1 degree), rear angle is too large and must be decreased.
1) Raise and support rear of vehicle. Position a jack under
differential housing. Remove rear wheel assemblies. Loosen rear spring
"U" bolt nuts. Insert tapered shim between spring and axle spring pad.
If increasing angle, insert shim with taper facing front of vehicle.
If decreasing angle, insert shim with taper facing rear of vehicle.
NOTE: If encountering difficulty in making drive shaft vertical
adjustments on one-piece drive shafts, drive shaft may be out
of horizontal alignment. See CHECKING HORIZONTAL ALIGNMENT.
NOTE: On 2-piece drive shafts, center angle is adjusted by use of
shims between center support mounting bracket and frame
crossmember. Center angle may need adjusting if rear angle is
changed.
2) Tighten spring "U" bolt nuts to specification. See TORQUE
SPECIFICATIONS table. Recheck drive shaft angle measurements. See
CHECKING VERTICAL ANGLE.
CHECKING HORIZONTAL ALIGNMENT
1) Drive shaft horizontal alignment should be checked if
frame damage is suspected or when major components have been replaced.
See Fig. 8 .
2) Clamp a long straightedge (12" longer than width of rear
wheel track) at 90 degrees to frame side rails. See Fig. 9. Use large
framing squares to align straightedge with side rails.
link yoke enough to grasp bearing cap with vise jaws. Remove grease
fittings that interfere with removal.
4) Grasp protruding bearing in vise jaws. Tap link yoke with
mallet and drift to dislodge bearing cap from yoke.
5) Flip assembly and repeat steps 3 and 4 to remove opposite
bearing cap. Remove cross centering kit assembly and spring.
6) Press remaining bearing caps out other end of link yoke to
complete disassembly.
Reassembly & Installation
1) Clean dirt and rust from all contact areas. Apply
multipurpose lubricant (NLGI grade 2 EP) to yoke bores and into needle\
bearings of each bearing cap. Lube center socket yoke and needle
bearings. See Fig. 12.
2) Position spider in drive shaft yoke bore. Reassemble
components in reverse order of disassembly, ensuring reference marks
align. Install drive shaft in vehicle, and tighten flange bolts to
specification. See TORQUE SPECIFICATIONS table.
Installation
1) Before installing drive shaft, clean mating flange, and
inspect machined surface for scratches, nicks and burrs. Support drive
shaft during installation to prevent bending shaft at sharp angle to
CV joint and causing damage to "U" joints.
2) Aligning reference marks, install CV joint flange to
transfer case flange first, then install shaft to pinion flange.
Attach 2 clamps to pinion flange, and tighten attaching bolts to
specification. Install and tighten 4 bolts to CV joint at transfer
case flange.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS\
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Application Ft. Lbs. (N.m)\
Center Bearing Support Bracket-To-Upper Bracket Bolts ...... 50 (68)\
Center Bearing Upper Bracket-To-Frame Bolts ................ 50 (68)\
Spring "U" Bolt Nuts
Dakota
2WD ..................................................... 65 (88)\
4WD ................................................... 110 (149)\
Ram Pickup ............................................. 110 (149)\
Ram Van/Wagon
B150 & B250 ............................................. 45 (61)\
B350 .................................................. 110 (149)\
Transfer Case Flange-To-CV Joint Flange Bolts
Dakota ................................................... 20 (27)\
Ram Pickup ............................................... 65 (88)\
"U" Joint Clamp-To-Pinion Flange Bolts
1/4" ..................................................... 14 (19)\
5/16" .................................................... 25 (34)\
Wheel Lug Nuts
Dakota .......................................... 85-115 (115-156)\
Ram Pickup
5-Lug .................................................. 95 (129)\
8-Lug (Single Wheel) .................................. 135 (183\
)
8-Lug (Dual Wheel) .................................... 145 (196\
)
Ram Van/Wagon
5-Lug .......................................... 80-110 (108-149)\
8-Lug ......................................... 120-150 (163-203)\
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components, reverse removal procedure.
Removal (Dakota 4WD & Durango 4WD)
1) Disconnect negative battery cable. Remove oil dipstick.
Drain engine oil. Remove exhaust pipe crossover and lower transmission
cover.
2) Remove front drive axle for access to oil pan. For front
drive axle removal, loosen wheel lug nuts. Remove cotter pin, lock nut
and spring washer. Loosen axle shaft nut with vehicle on floor and
brakes applied. Raise and support vehicle.
CAUTION: DO NOT pull on rubber boot during axle shaft removal. Pull on
outer CV joint only.
3) Remove wheels and skid plate. Remove axle shaft nut.
Remove axle shaft-to-differential flange bolts at front drive axle.
Support axle shaft, and separate axle splines from wheel hub by
pulling inward at outer CV joint.
4) Remove remaining axle shaft. Mark front drive shaft and
transfer case yoke for installation reference. Remove front drive
shaft from transfer case. Disconnect vacuum hoses from shift motor and
electrical connections at shift indicator switch.
5) Support front drive axle using a floor jack. Remove front
drive axle and shift motor bolts. Lower floor jack, and remove front
drive axle with drive shaft. Remove transmission lower cover. Remove
bolts, oil pan and gasket.
Installation
1) To install, reverse removal procedure. Before installing
oil pan, apply RTV sealant where front cover contacts cylinder block,
oil pan side gaskets meet end seals and end seals contact cylinder
block. See Fig. 14.
2) To facilitate oil pan installation, fabricate 4 alignment
dowels from 1 1/2" x 5/16" bolts. See Fig. 15. Tighten bolts to
specification. See TORQUE SPECIFICATIONS table.
3) To install remaining components, reverse removal
procedure. When installing front drive axle, loosely install all bolts
before tightening to specification. Tighten axle shaft nut to
specification with vehicle on ground. See TORQUE SPECIFICATIONS table.
Ensure reference marks on transfer case yoke and front drive shaft are
aligned.
Removal (Ram Pickup & Ram Van/Wagon - 3.9L)
1) Disconnect negative battery cable. Remove oil dipstick. On
Ram Van/Wagon, remove engine cover. On all models, remove air cleaner
and engine controller. Raise and support vehicle. Drain engine oil.
2) Remove left engine-to-transmission strut. Loosen exhaust
pipe support bracket. Disconnect exhaust pipe. On Ram Pickup, remove
oil pan and gasket.
3) On Ram Van/Wagon, remove starter, transmission dust
shield, oxygen sensor and air injection tube. On all models, remove
right engine mount nut. Loosen, but DO NOT remove, left engine mount
nut.
4) Support right side of engine using jackstand. Remove
transmission mount through-bolt, and support transmission using
jackstand. Raise engine and transmission enough for oil pan removal.
Remove bolts, oil pan and gasket.
Installation
1) To install, reverse removal procedure. Before installing
oil pan, apply RTV sealant where front cover contacts cylinder block,
oil pan side gaskets meet end seals and end seals contact cylinder
block. See Fig. 14.
Engine Mount Through-Bolt
Dakota 2WD & Durango 2WD ................................. 50 (68)\
Dakota 4WD, Durango 4WD & Ram Pickup .................... 75 (102)\
Grand Cherokee ............................................. 60 (81)\
Engine Mount-To-Cylinder Block Bolt
Dakota & Durango ......................................... 30 (41)\
Ram Pickup ............................................... 60 (81)\
Ram Van/Wagon & Grand Cherokee ............................. 65 (88)\
Engine Mount-To-Frame Bracket Bolt/Nut
Ram Pickup & Ram Van/Wagon .............................. 75 (102)\
Exhaust Manifold Bolt & Nut
Durango .................................................. 18 (24)\
All Others ................................................. 25 (34)\
Flywheel/Flexplate-To-Crankshaft Bolt ...................... 55 (75)\
Front Cover Bolt ........................................... 30 (41)\
Heat Shield Bolts .......................................... 30 (41)\
Main Bearing Cap Bolt ..................................... 85 (115)\
Oil Drain Plug ............................................. 25 (34)\
Oil Filter Adapter Stud .................................... 50 (68)\
Oil Pan Bolt ............................................... 18 (24)\
Oil Pump Bolt .............................................. 30 (41)\
Rocker Arm Bolt ............................................ 21 (28)\
Shift Motor Bolt
Dakota 4WD & Durango 4WD ................................. 65 (88)\
Spark Plug ................................................. 30 (41)\
Starter Bolts .............................................. 50 (68)\
Throttle Body Bolt ......................................... 17 (23)\
Transfer Case Yoke Bolt
Dakota 4WD & Durango 4WD ................................. 20 (27)\
Vibration Damper Bolt .................................... 135 (183)\
Water Pump Bolt ............................................ 30 (41)\
INCH Lbs. (N.m)
Intake Manifold Bolt ( 4)
Step 1 .................................................. 24 (2.7)\
Step 2 .................................................. 48 (5.4)\
Step 3 .................................................. 84 (9.5)\
Step 4 (Verify Torque All Bolts) ........................ 84 (9.5\
)
Intake Manifold Plenum Pan Bolt
Step 1 .................................................. 24 (2.7)\
Step 2 .................................................. 48 (5.4)\
Step 3 .................................................. 84 (9.5)\
Step 4 (Verify Torque) .................................. 84 (9.5\
)
Oil Pump Cover Bolt ........................................ 97 (11)\
Valve Cover Bolts .......................................... 95 (11)\
( 1) - Bolts through clutch housing into cylinder block.
( 2) - Bolts through cylinder block into clutch housing.
( 3) - Tighten bolts in sequence. See 7.
( 4) - Tighten bolts in sequence. See 5 and 6.
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ENGINE SPECIFICATIONS
GENERAL SPECIFICATIONS (3.9L) \
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Application Specification
Displacement .................................... 239 Cu. In. (3.9L)\
Bore ............................................... 3.91" (99.3 mm)\
Stroke ............................................. 3.31" (84.1 mm)\
and hoses are clear and not pinched. Adjusting temperature control
cable. See TEMPERATURE CONTROL CABLE ADJUSTMENT . Tighten bolts and
nuts to specification. See TORQUE SPECIFICATIONS. Enable air bag
system. See AIR BAG SYSTEM SAFETY article.
Removal & Installation (Ram Pickup)
1) Disconnect negative battery cable. Ensure front wheels are
in a straight-ahead position and steering wheel is in LOCKED position.
Disable air bag system. See AIR BAG SYSTEM SAFETY article. Remove Air
Bag Control Module (ACM) and bracket from floor panel transmission
tunnel. Drain cooling system.
2) Remove left and right cowl side inner trim panels. Remove
knee bolster/steering column cover. Remove hood release and parking
brake release handle bolts from lower instrument panel support.
3) Disconnect driver's side air bag connector at lower left
corner of instrument panel. If equipped, disconnect overdrive lock-out
switch wiring harness connector from instrument panel wire harness
near instrument panel lower reinforcement.
4) Pull PRNDL cable and twist to remove from position arm.
Push tab on bottom of cable retainer upward, then squeeze sides to
remove retainer from column. If equipped, remove tilt lever. Remove
both upper and lower shrouds from column. Remove lower fixed column
shroud. Loosen multifunction switch connector screw. Screw will remain
in connector.
5) Ensure steering wheel is in LOCKED position. Remove
remaining steering column electrical connectors. Remove air bag wiring
harness from steering column wiring trough. Remove wiring trough from
steering column. Remove steering column as an assembly from vehicle.
6) From driver's side of instrument panel, disengage parking
brake release linkage rod from parking brake mechanism. Disconnect
instrument panel wiring harness from parking brake mechanism.
Disconnect 3 wiring harness bulkhead connectors located closest to
dash panel.
7) Disconnect instrument panel left side wiring harness
connectors. Remove screw from center of headlight and dash-to-
instrument panel (bulkhead) connector, and disconnect connector.
Disconnect instrument panel-to-door wiring harness. Disconnect
instrument panel to stoplight switch connector. Disconnect vacuum
harness for heater system.
8) If equipped with an Infinity sound system, disconnect
Infinity wiring harness connector from instrument panel harness
connector that is secured to bulkhead connector.
9) From passenger's side of instrument panel, disconnect
radio antenna coaxial cable connector. Loosen right and left
instrument panel roll-down bracket bolts about .50" (13 mm). Removing
center screw last, remove 5 bolts holding top of instrument panel to
top of dash panel.
10) Roll instrument panel downward and install a temporary
support hook to center hole of dash panel. Support hook should support
instrument panel in rolled-down position, about 18" (457 mm) away from\
dash panel. Disconnect remaining wiring harness connectors. With the
aid of an assistant, remove temporary hook and lift instrument panel
from vehicle.
11) To install, reverse removal procedure. Ensure all wiring
and hoses are clear and not pinched. Tighten bolts and nuts to
specification. See TORQUE SPECIFICATIONS . Enable air bag system. See
AIR BAG SYSTEM SAFETY article.
TEMPERATURE CONTROL CABLE R & I
Removal (Dakota & Durango)
Disconnect negative battery cable. Disconnect but DO NOT
remove instrument panel. See INSTRUMENT PANEL. Disconnect temperature
CAUTION: If turbocharger failure exists, intercooler must be cleaned.
See INTERCOOLER under AIR INDUCTION SYSTEMS.
Removal
1) Disconnect negative battery cables. Disconnect air inlet
tube and exhaust pipe from turbocharger. Disconnect intercooler inlet
duct from turbocharger. See Fig. 2.
2) Disconnect and plug turbocharger oil supply line and
turbocharger oil drain line at turbocharger. Remove turbocharger
retaining nuts, turbocharger and gasket from exhaust manifold. Plug
all air intake openings.
Installation
1) Apply anti-seize compound on turbocharger mounting studs.
Using NEW gasket, install turbocharger. Install and tighten
turbocharger retaining nuts to specification. See TORQUE
SPECIFICATIONS.
2) Using NEW gasket, install turbocharger oil drain line on
turbocharger. Install and tighten turbocharger oil drain line bolts to
specification. See TORQUE SPECIFICATIONS.
CAUTION: Turbocharger must be pre-lubricated by pouring clean engine
oil in turbocharger oil supply line fitting on turbocharger
before starting the engine.
WARNING: DO NOT rotate turbine wheel in turbocharger with your finger,
as sharp edges may exist.
3) Pour 3 ozs. (60 cc) of clean engine oil into turbocharger\
oil supply line fitting on turbocharger while using soft object to
rotate turbine wheel in turbocharger. This must be done to pre-
lubricate the turbocharger.
4) Install turbocharger oil supply line on turbocharger and
tighten nut to specification. See TORQUE SPECIFICATIONS. To install
remaining components, reverse removal procedure. Tighten bolts/nuts to
specification. See TORQUE SPECIFICATIONS.
TURBOCHARGER WASTEGATE ADJUSTMENT
NOTE: For turbocharger wastegate adjustment, see CONTROL ROD
ADJUSTMENT under TURBOCHARGER WASTEGATE in ON-VEHICLE
ADJUSTMENTS - DIESEL article.
ENGINE SENSORS & SWITCHES
ENGINE COOLANT TEMPERATURE SENSOR
Removal & Installation
1) Engine coolant temperature sensor is located at front of
cylinder head near thermostat. See Fig. 3.
2) Partially drain cooling system until coolant level is
below the cylinder head. Disconnect ECT sensor electrical connector.
Remove ECT sensor from cylinder head. Discard "O" ring. To install,
reverse removal procedure. Use new "O" ring.
CRANKSHAFT POSITION SENSOR (CKP)
NOTE: Crankshaft Position (CKP) sensor may be referred to as engine\
speed sensor.
Removal & Installation
1) CKP sensor is located on left rear side of engine block
FUEL HEATER RELAY
Removal & Installation
Fuel heater relay is located in Power Distribution Center
(PDC). Check label under PDC cover for relay location. To install,
reverse removal procedure.
INTAKE MANIFOLD AIR HEATER RELAYS
Removal & Installation
1) Intake manifold air heater relays are mounted on inner
wheelwell, below driver's side battery. See Fig. 5. Disconnect
negative battery cables.
2) Note location of wiring on intake manifold air heater
relays for installation reference. Disconnect electrical connectors at
intake manifold air heater relays.
3) Remove retaining bolts and intake manifold air heater
relay assembly. Both relays and mounting bracket are replaced as an
assembly. To install, reverse removal procedure. Tighten bolts to
specification. See TORQUE SPECIFICATIONS.
Fig. 5: Locating Intake Manifold Air Heater Relays
Courtesy of Chrysler Corp.
FUEL SYSTEM
Removal & Installation (Dakota 2.5L)
1) Crankshaft position sensor is located on driver's side of
engine at transmission bellhousing. See Fig. 18. Remove air inlet duct
between throttle body and air cleaner assembly.
2) Disconnect electrical connector for crankshaft position
sensor. Remove crankshaft position sensor retaining bolts and
crankshaft position sensor.
CAUTION: Retaining bolts for crankshaft position sensor are specially
machined bolts to provide correct clearance between
crankshaft position sensor and the flywheel. DO NOT use any
other type retaining bolts.
3) To install, reverse removal procedure. Tighten crankshaft
position sensor retaining bolts to specification. See TORQUE
SPECIFICATIONS.
Removal & Installation (Dakota 3.9L, 5.2L & 5.9L, & Durango)
1) Crankshaft position sensor is located on passenger side of
engine at transmission bellhousing, just behind the cylinder head. See
Fig. 19 . Passenger's side front fender wheelwell must be removed for
access to crankshaft position sensor.
2) Raise and support vehicle. Remove passenger side front
wheel. Remove wheel opening molding. Remove plastic rivets attaching
wheelwell to front fender. Remove wheelwell.
3) Disconnect electrical connector for crankshaft position
sensor. Remove crankshaft position sensor retaining bolts and
crankshaft position sensor.
4) To install, reverse removal procedure. Tighten crankshaft
position sensor retaining bolts and wheel lug nuts to specification.
See TORQUE SPECIFICATIONS.
Removal & Installation (Ram Pickup 3.9L, 5.2L & 5.9L, Ram Van
& Ram Wagon)
1) Crankshaft position sensor is located on passenger side of
engine at transmission bellhousing, just behind the cylinder head. See
Fig. 19 .
2) On Ram Van and Ram Wagon, remove engine cover. On Ram
Pickup, remove air inlet duct for access to crankshaft position
sensor.
3) On all models, disconnect electrical connector for
crankshaft position sensor. Remove crankshaft position sensor
retaining bolts and crankshaft position sensor.
4) To install, reverse removal procedure. Tighten crankshaft
position sensor retaining bolts to specification. See TORQUE
SPECIFICATIONS.
Removal (Ram Pickup 8.0L)
1) Crankshaft position sensor is located on passenger's side
of cylinder block, just above the oil pan. See Fig. 20.
2) Raise and support vehicle. Disconnect electrical connector
for crankshaft position sensor. Remove plastic tie strap securing
wiring harness to side of cylinder block.
3) Remove crankshaft position sensor retaining bolt. Using 2
small screwdrivers, carefully pry crankshaft position sensor with "O"
ring from cylinder block by rocking crankshaft position sensor back
and forth.
Installation
1) Apply light coat of engine oil on crankshaft position
sensor "O" ring. Install crankshaft position sensor in cylinder block
by rocking crankshaft position sensor back and forth. DO NOT twist
crankshaft position sensor during installation, or "O" ring may be