(7) Insert the quick-connect fitting to the compo-
nent being serviced and into the plastic retainer.
When a connection is made, a click will be heard.
(8) Verify a locked condition by firmly pulling on
fuel tube and fitting (15-30 lbs.).
(9) Connect negative cable to battery.
(10) Start engine and check for leaks.
PLASTIC RETAINER RING TYPE FITTING
This type of fitting can be identified by the use of a
full-round plastic retainer ring (Fig. 19) usually black
in color.
CAUTION: The interior components (O-rings, spac-
ers, retainers) of this type of quick-connect fitting
are not serviced separately. Do not attempt to repair
damaged fittings or fuel lines/tubes. If repair is nec-
essary, replace the complete fuel tube assembly.WARNING: THE FUEL SYSTEM IS UNDER A CON-
STANT PRESSURE (EVEN WITH THE ENGINE OFF).
BEFORE SERVICING ANY FUEL SYSTEM HOSES,
FITTINGS OR LINES, THE FUEL SYSTEM PRES-
SURE MUST BE RELEASED. REFER TO THE FUEL
PRESSURE RELEASE PROCEDURE IN THIS
GROUP.
DISCONNECTION/CONNECTION
(1) Disconnect negative battery cable from the bat-
tery.
(2) Perform the fuel pressure release procedure.
Refer to the Fuel Pressure Release Procedure in this
section.
(3) Clean the fitting of any foreign material before
disassembly.
(4) To release the fuel system component from the
quick-connect fitting, firmly push the fitting towards
the component being serviced while firmly pushing
the plastic retainer ring into the fitting (Fig. 19).
With the plastic ring depressed, pull the fitting from
the component.The plastic retainer ring must be
pressed squarely into the fitting body. If this re-
tainer is cocked during removal, it may be dif-
ficult to disconnect fitting. Use an open-end
wrench on the shoulder of the plastic retainer
ring to aid in disconnection.
After disconnection, the plastic retainer ring will
remain with the quick-connect fitting connector body.
(5) Inspect fitting connector body, plastic retainer
ring and fuel system component for damage. Replace
as necessary.
(6) Prior to connecting the quick-connect fitting to
component being serviced, check condition of fitting
and component. Clean the parts with a lint-free
cloth. Lubricate them with clean engine oil.
(7) Insert the quick-connect fitting into the compo-
nent being serviced until a click is felt.
(8) Verify a locked condition by firmly pulling on
fuel tube and fitting (15-30 lbs.).
(9) Connect negative battery cable to battery.
(10) Start engine and check for leaks.
Fig. 19 Plastic Retainer Ring Type Fitting
14 - 12 FUEL DELIVERY SYSTEMJ
(2) Remove the fuel filler cap. Using an approved por-
table gasoline siphon/storage tank, drain fuel tank.
(3) Raise and support vehicle.
(4) Disconnect fuel fill hose and fill vent hose from
filler neck (Fig. 1).
(5) Disconnect fuel pump module wire connector.
Remove tie straps securing connector harness to fuel
supply and return tubes.
WARNING: WRAP SHOP TOWELS AROUND FUEL
HOSES TO ABSORB ANY FUEL SPILLAGE DURING
FUEL TANK REMOVAL.
(6) Disconnect fuel tank vent hose from vent tube.
(7) Disconnect fuel supply and return hoses from
tubes.
(8) If equipped, remove skid plate (Fig. 2).
(9) Remove fuel tank shield (Fig. 3).
(10) Center a transmission jack under the fuel tank.
(11) Remove support strap nuts. Move straps away
from tank (Fig. 3).
(12) Lower fuel tank on transmission jack.
INSTALLATIONÐXJ MODELS
(1) Raise fuel tank into position. Connect fuel fill
hose and vent hose to filler neck and tighten clamps.
(2) Wrap support straps around tank and over studs.
Tighten strap nuts to 11.3 Nzm (100 in. lbs.) torque.
(3) Remove transmission jack.
(4) Install tank shield.
(5) If equipped, install tank skid plate.
(6) Connect vent hose to vent tube.
(7) Connect fuel supply hose to supply tube and
fuel return hose to return tube. Tighten hose clamps.(8) Connect fuel pump module wire connector to
harness connector. Secure fuel pump module wire
harness to fuel tubes with tie straps.
(9) Lower vehicle.
(10) Fill fuel tank. Install filler cap.
(11) Connect negative battery cable to battery.
(12) Start vehicle and inspect for leaks.REMOVALÐYJ MODELS
WARNING: EXTINGUISH ALL TOBACCO SMOKING
PRODUCTS BEFORE SERVICING THE FUEL SYS-
TEM. KEEP OPEN FLAME AWAY FROM FUEL SYS-
TEM COMPONENTS.
Fig. 1 Filler Neck HosesÐXJ Models
Fig. 2 Skid PlateÐXJ Models
Fig. 3 Fuel Tank Remove/InstallÐXJ Models
14 - 14 FUEL TANKSJ
(1) Disconnect negative battery cable.
(2) Remove the fuel filler cap. Using an approved
portable gasoline siphon/storage tank, drain fuel
tank.
(3) Raise and support vehicle.
(4) Using a small straight blade screwdriver, pull
back the stems of the push clips that secure the fuel
filler neck shroud (located at bottom of left rear
wheel well) in place (Fig. 4). This unlocks the push
clip allowing them to be removed by pulling assembly
out of shroud. Remove shroud.
(5) Disconnect fuel fill hose and fill vent hose from
filler neck (Fig. 5).
WARNING: WRAP SHOP TOWELS AROUND FUEL
HOSES TO ABSORB ANY FUEL SPILLAGE DURING
FUEL TANK REMOVAL.
(6) Disconnect fuel tank vent hose from vent tube.
Disconnect fuel supply and return hoses from tubes
(Fig. 6).
The fuel tank and skid plate are removed as an as-
sembly.(7) Centrally position a transmission jack under
skid plate/fuel tank assembly.
(8) Remove skid plate/fuel tank assembly mounting
nuts (Fig. 7).Do not loosen tank strap nuts.
(9) Lower the skid plate/fuel tank assembly
slightly and disconnect the gauge sender wire con-
nector.
(10) Lower the fuel tank on transmission jack.
(11) Remove tank strap nuts to remove tank from
skid plate.
INSTALLATIONÐYJ MODELS
(1) Place tank into skid plate. Wrap straps around
tank with strap bolts inserted through holes in skid
plate. Tighten strap nuts to 7.3 Nzm (65 in. lbs.)
torque.
Fig. 4 Fuel Filler Neck ShroudÐYJ Models
Fig. 5 Filler Neck HosesÐYJ Models
Fig. 6 Fuel Tank HosesÐYJ Models
Fig. 7 Fuel TankÐRemove/InstallÐYJ Models
JFUEL TANKS 14 - 15
(2) Place a small container or shop towel beneath
the switch to collect any excess fluid.
(3) Remove the switch.
INSTALLATION
(1) Install the power steering switch.
(2) Connect the electrical connector to the switch.
(3) Check power steering fluid and add as neces-
sary.
(4) Start the engine and again check power steer-
ing fluid. Add fluid if necessary.
POWERTRAIN CONTROL MODULE (PCM)
On XJ models, the PCM is located in the engine
compartment next to the air cleaner (Fig. 19). On YJ
models, the PCM is located in the engine compart-
ment behind the windshield washer fluid reservoir
(Fig. 20).
REMOVAL
(1) Disconnect the negative battery cable at the
battery.(2) YJ Models Only: Remove the windshield
washer fluid tank.
(3) Loosen the 60-Way connector mounting bolt
(Figs. 19 or 20).
(4) Remove the electrical connector by pulling
straight back.
(5) Remove the three PCM mounting bolts.
(6) Remove PCM.
INSTALLATION
(1) After the PCM electrical connector has been
separated from the PCM, inspect the pins for corro-
sion, being spread apart, bent or misaligned. Also in-
spect the pin heights in the connector. If the pin
heights are different, this would indicate a pin has
separated from the connector. Repair as necessary.
(2) Install PCM. Tighten three mounting bolts to 1
Nzm (9 in. lbs.) torque.
(3) Engage 60-way connector into PCM. Tighten
connector mounting bolt to 4 Nzm (35 in. lbs.) torque.
(4) YJ Models: Install windshield washer fluid
tank.
(5) Connect negative cable to battery.
QUICK-CONNECT FITTINGS
Refer to the Fuel Delivery System section of this
group for removal/installation procedures.
THROTTLE BODY
REMOVAL
(1) Disconnect the negative battery cable.
(2) Disconnect air cleaner hose from throttle body.
(3) Disconnect idle air control motor and throttle
position sensor wire connectors.
(4) Disconnect accelerator cable, throttle cable (au-
tomatic transmission) and speed control cable (if
equipped) from throttle arm (Fig. 21).
(5) Remove throttle body mounting bolts (Fig. 22),
throttle body and gasket. Discard old gasket.
Fig. 18 Power Steering Pressure SwitchÐXJ Models
Fig. 19 PCM LocationÐXJ Models
Fig. 20 PCM LocationÐYJ Models
14 - 64 FUEL SYSTEM COMPONENT REMOVAL/INSTALLATIONJ
(2) Remove fitting from pump housing (Fig. 10).
Prevent flow control valve and spring from
sliding out of housing bore.
(3) Remove and discard O-ring seal.
INSTALLATION
(1) If necessary, clean and install flow control valve
and spring in pump housing bore.Be sure the hex
nut end of the valve is facing in toward pump.
(2) Install O-ring seal onto fitting (Fig. 10).
(3) Install flow control valve in pump housing and
tighten to 75 Nzm (55 ft. lbs.) torque.
(4) Install pressure hose to valve.
POWER STEERING PUMPÐINITIAL OPERATION
CAUTION: The fluid level should be checked with
engine off to prevent injury from moving compo-
nents. Use only Mopar Power Steering Fluid. Do not
use automatic transmission fluid. Do not overfill.
Wipe filler cap clean, then check the fluid level.
The dipstick should indicate FULL COLD when the
fluid is at normal temperature 21ÉC to 27ÉC (70ÉF to
80ÉF).
(1) Fill the pump fluid reservoir to the proper level
and let the fluid settle for at least two (2) minutes.
(2) Start the engine and let run for a few seconds.
Then turn the engine off.
(3) Add fluid if necessary. Repeat the above proce-
dure until the fluid level remains constant after run-
ning the engine.
(4) Raise the front wheels off the ground.
(5) Start the engine. Slowly turn the steering
wheel right and left, lightly contacting the wheel
stops.
(6) Add power steering fluid if necessary.
(7) Lower the vehicle and turn the steering wheel
slowly from lock to lock.
(8) Stop the engine. Check the fluid level and refill
as required.
(9) If the fluid is extremely foamy, allow the vehi-
cle to stand a few minutes and repeat the above pro-
cedure.
Fig. 10 Flow Control Valve Fitting
JSTEERING 19 - 15
replaced, remove them with a hammer and punch.
Discard the bearings and races after removal. They
are not reusable.
(37) Remove the steering shaft from the upper end
of the steering column.
(38) Separate the steering shaft by folding it 90 de-
grees at the flexible joint. Detach the upper and the
lower shaft halves (Fig. 16).
(39) Remove the attaching bolts and the steering
column support (Fig. 17).(40) Remove the retaining screws and shift gate
from the steering column support.
(41) Remove the retainer and the bearing from the
lower end of the steering column.
(42) Remove the shift tube retaining ring and the
thrust washer.
(43) Remove the shift tube from the steering col-
umn jacket with Shift Tube Remover C-4120 (Fig.
18).
(44) Tilt the upper end of the retainer plate toward
the lower end of the column, turn the plate counter-
clockwise and remove it (Fig. 19).
Fig. 16 Steering Shaft Separation
Fig. 17 Steering Column Support Removal
Fig. 18 Shift Tube Removal
Fig. 19 Retainer Plate Removal
19 - 70 STEERINGJ
(36) If equipped, install the cruise control wire har-
ness. Install the turn signal stalk by pushing it
straight into the column.
(37) Insert the hazard warning knob in the hazard
warning switch and press it inward. Align and install
the turn signal switch retaining screws. Ensure that
the turn signal switch is properly seated before tight-
ening the screws. Tighten the screws to 4 Nzm (33 in.
lbs.) torque. Thread the hazard warning switch knob
into the switch and pull the knob outward.
(38) Install and seat the upper bearing race in the
key/lock cylinder housing.
(39) Install the upper bearing preload spring, the
canceling cam and the lockplate.
(40) Install a replacement lockplate retaining snap
ring on the sleeve of the Lock Plate Compressor
C-4156. Install the tool on the steering shaft (Fig.
24).
(41) Compress the lockplate with the compressor
tool and position the retaining snap ring in the steer-
ing shaft groove.
(42) Remove the compressor tool. Ensure that the
retaining ring is completely seated in the groove be-
fore removing the tool.
(43) Position the wire harness protectors if
equipped, over the harnesses and snap in place on
steering column.
(44) Install the lockplate cover.
(45) Install the gear selector lever and the retain-
ing pin.
(46) Install the steering wheel. Refer to the instal-
lation procedure.
(47) Insert the ignition key in the key/lock cylin-
der; turn the cylinder to the OFF-UNLOCK position ;
move the ignition switch downward to eliminate any
switch-to-remote rod lash; and tighten the ignition
switch attaching screws to 4 Nzm (35 in. lbs.) torque.(48) Depress the dimmer switch slightly and insert
a 3/32-inch drill bit into the adjustment hole.
(49) Loosen the retaining screws and move the
dimmer switch toward the steering wheel. Tighten
the dimmer switch retaining screws to 4 Nzm (35 in.
lbs.) torque.
(50) Remove the drill bit and test operation by
moving the dimmer switch stalk. Test the dimmer
switch operation in the full-up, down and center
steering wheel positions.
(51) Install the steering column, if applicable. Re-
fer to the installation procedure.
Fig. 24 Lockplate Retaining Ring Installation
JSTEERING 19 - 73
TRANSMISSION AND TRANSFER CASE
CONTENTS
page page
30RH/32RH AUTOMATIC TRANSMISSION.... 67
AW 4 AUTOMATIC TRANSMISSION........ 165
AX 15 MANUAL TRANSMISSION........... 33
AX 4/5 MANUAL TRANSMISSION............ 1NP231 TRANSFER CASE................. 283
NP242 TRANSFER CASE................. 306
TRANSMISSION/TRANSFER CASE
SPECIFICATIONS..................... 333
AX 4/5 MANUAL TRANSMISSION
INDEX
page page
Cleaning and Inspection.................... 13
Gear Ratios.............................. 2
General Information........................ 1
Recommended Lubricant.................... 2
Service Diagnosis.......................... 2
Shift Pattern.............................. 2Transmission Assembly and Adjustment......... 16
Transmission Disassembly and Overhaul......... 5
Transmission Identification................... 2
Transmission Installation..................... 5
Transmission Removal...................... 3
GENERAL INFORMATION
The AX 4 is a four speed manual transmission. The
AX 5 is a five speed manual transmission. Fifth gear
in the AX 5 is an overdrive range. The shift mecha-
nism in both models is integral and mounted in theshift tower portion of the adapter housing (Fig. 1).
The AX 4/5 is used for 2.5L engine applications.
Fig. 1 AX 4/5 Manual Transmission
JTRANSMISSION AND TRANSFER CASE 21 - 1