front JEEP CHEROKEE 1994 Service Repair Manual

action should not be attempted until the vibration
type has been identified via a road test.
During the road test, drive the vehicle on a smooth
surface. If vibration exists, note and record the fol-
lowing information:
²Identify the vehicle speed range when the vibra-
tion occurs
²Identify the type of vibration
²Identify the vibration sensitivity
²Determine if the vibration is affected by changes
in vehicle speed, engine speed and engine torque.
When the vibration has been identified, refer to the
Vibration Diagnosis chart for causes. Consider cor-
recting only those causes coded in the chart that are
related to the vibration condition.
Refer to the following cause codes and descriptions
for explanations when referring to the chart.
TRRÐTire and Wheel Radial Runout:Vehicle
speed sensitive, mechanical vibration. The runout
will not cause vibration below 20 mph (32 km/h).
WHÐWheel Hop:Vehicle speed sensitive, me-
chanical vibration. The wheel hop generates rapid
up-down movement in the steering wheel. The vibra-
tion is most noticeable in the 20 - 40 mph (32 - 64
km/h) range. The wheel hop will not cause vibration
below 20 mph (32 km/h). Wheel hop is caused by a
tire/wheel that has a radial runout of more than
0.045 of-an-inch (1.14 mm). If wheel runout is accept-able and combined runout cannot be reduced by re-
positioning the tire on wheel, replace tire.
TBÐTire/Wheel Balance:Vehicle speed sensitive,
mechanical vibration. Static tire/wheel unbalance
will not cause vibration below 30 mph (46 km/h). Dy-
namic tire/wheel unbalance will not cause vibration
below 40 mph (64 km/h).
TLRÐTire/Wheel Lateral runout:Vehicle speed
sensitive, mechanical vibration. The runout will not
cause vibration below 50 - 55 mph (80 - 88 km/h).
Excessive lateral runout will also cause front-end
shimmy.
TWÐTire Wear:Vehicle speed sensitive, audible
vibration. Abnormal tire wear causes small vibration
in the 30 - 55 mph (88 km/h) range. This will pro-
duce a whine noise at high speed. The whine will
change to a growl noise when the speed is reduced.
WÐTire Waddle:Vehicle speed sensitive, mechan-
ical vibration. Irregular tire uniformity can cause
side-to-side motion during speeds up to 15 mph (24
km/h). If the motion is excessive, identify the defec-
tive tire and replace it.
UAJÐUniversal Joint (Drive Shaft) Angles:
Torque/vehicle speed sensitive, mechanical/audible
vibration. Incorrect drive shaft angles cause mechan-
ical vibration below 20 mph (32 km/h) and in the 70
VIBRATION DIAGNOSIS
22 - 10 WHEELS AND TIRESJ

KEY LOCK CYLINDERS
The ignition switch, glove box door, front doors and
liftgate all have key lock cylinders (Fig. 6). When
lock cylinder access or replacement is necessary, re-
fer to the applicable service information source:
²Ignition SwitchÐGroup 8D,
²Instrument Panel,
²Front Doors, and
²Liftgate.
Fig. 4 XJ VIN PlateFig. 5 XJ Jack Usage & Storage Instruction Labels
Fig. 6 Ignition Switch & Glove Box Door Key Lock
Cylinders
23 - 2 BODY COMPONENTSÐXJ VEHICLESJ

EXTERIOR COMPONENTS
BRUSH GUARD
REMOVAL
(1) Remove the bolts and washers that attach the
brush guard (Fig. 1) to the side sills.
(32 Remove the nuts and washers that the attach
brush guard to the bumper. Remove the brush guard
from the bumper.
INSTALLATION
(1) Position and support the brush guard on the
bumper. Install the attaching washers and nuts.
Do not tighten the nuts until the brush guard is
properly positioned on the vehicle and aligned.
(2) Install the bolts and washers to attach the
brush guard to side sills.
(3) Align the brush guard and tighten the bolts.
GRILLE AND GRILLE OPENING PANEL (GOP)
REMOVAL
(1) Remove the screws and grille (Fig. 2) from the
grille opening panel (GOP).
(2) Remove the screws, side marker lenses and the
headlamp bezels from the grille opening panel (GOP)
(Fig. 3).
(3) Remove the headlamps and park/turn signal
lamps from the GOP (Fig. 4).
(4) Open the hood.
(5) Remove the nuts that attach the grille opening
panel (GOP) to the bracket on radiator support cross-
member.
(6) Remove the nuts that attach the grille opening
panel (GOP) to the front fenders (Fig.5).
Fig. 2 Grille & GOP
Fig. 1 Brush Guard Removal/Installation
JBODY COMPONENTSÐXJ VEHICLES 23 - 3

(7) Remove the screws that attach the grille open-
ing panel (GOP) support bracket to the front sill
crossmember (Fig. 6).
(8) Pull the grille opening panel (GOP) forward
and disconnect the clips and all the front lamp har-
ness connectors (Fig. 7).(9) Remove the grille opening panel (GOP) from
the vehicle.
(10) If necessary, remove the air inlet baffles from
GOP (Fig. 8).
Fig. 3 Side Marker Lamp Removal/Installation
Fig. 4 Headlamp & Park/Turn Signal Lamp Removal/
Installation
Fig. 5 GOP Attaching Nuts At Front Fender
Fig. 6 Crossmember-to-GOP Support Bracket
Fig. 7 Front Lamp Wire Harness Connectors
Fig. 8 GOP Air Inlet Baffles
23 - 4 BODY COMPONENTSÐXJ VEHICLESJ

INSTALLATION
(1) Place the grille opening panel (GOP) on bumper
and connect all front lamp wire harness connectors.
(2) Position the grille opening panel (GOP) on the
vehicle and install the side and upper nuts. Tighten
nuts to 7 Nzm (58 in-lbs) torque.
(3) Install the screw to attach grille opening panel
(GOP) to the crossmember support bracket. Tighten
the screw to 1 Nzm (11 in-lbs) torque.
(4) Install headlamps and park/turn signal lamps
in GOP.(5) Install the headlamp bezels on the GOP.
Tighten the screws to 1 Nzm (13 in-lbs) torque.
(6) Install the side marker lenses and screws on
the grille opening panel (GOP). Tighten the screws to
1Nzm (13 in-lbs) torque.
(7) Install the grille on the GOP. Tighten screws to
1Nzm (13 in-lbs) torque.
(8) Adjust the headlamp aim, if necessary. Refer to
the headlamp beam adjustment procedure within
Group 8L.
RADIATOR SUPPORT CROSSMEMBER
REMOVAL
(1) Remove the grille opening panel (GOP) (Fig. 2).
(2) For 2.5L engines, remove the power steering
pump reservoir from the left filler panel (Fig. 9).
(3) Remove the radiator support crossmember and
radiator from the front of vehicle (Fig. 10).
(4) If additional disassembly is required, remove
the horns, baffle braces and the wire harnesses from
the baffles (Fig. 11).
INSTALLATION
(1) If removed, install the horns, baffle braces and
the wire harnesses on the baffles (Fig. 11).
(2) Position the radiator and the radiator support
Fig. 9 P/S Pump Reservoir Removal/Installation
Fig. 10 Radiator Support Crossmember & Modular Radiator
JBODY COMPONENTSÐXJ VEHICLES 23 - 5

crossmember at the front of vehicle (Fig. 10). Install
and tighten screws to 9 Nzm (76 in-lbs) torque.
(3) For 2.5L engines, install the power steering
pump reservoir on the left filler panel (Fig. 9).
(4) Install the grille opening panel (GOP).
HOOD
The hood service procedures included in this sec-
tion include:
²hood removal and installation;
²hood adjustment;
²hingeÐlatchÐstriker service; and
²latch release cable service.
Refer to Figures 12Ð16 for the hood component
reference.
Fig. 11 Horns, Baffle Braces & Wire Harnesses
23 - 6 BODY COMPONENTSÐXJ VEHICLESJ

FRONT FENDER
The following information includes procedures for
removal/installation of:
²a fender liner,
²a front fender flare and retainers, and
²a front fender.
REMOVAL
(1) Remove the front bumper.
(2) Right fender only:
²if equipped, remove the radio antenna mast, and
components from the fender (Figs. 34 and 35);
²remove the battery and tray from the fender inner
panel (Figs. 36, 37 and 38);
²remove windshield washer reservoir from fender
inner panel (Fig. 39);
²remove the hood ajar switch, if equipped, from
fender (Figs. 40 and 41);
²remove the Power Distribution Center (PDC), the
coolant recovery bottle and speed servo from fender
the inner panel.
Fig. 36 Battery, Speed Servo, PDC & Coolant
Recovery Bottle
Fig. 37 Battery Removal/Installation
Fig. 38 Battery Tray Removal/Installation
Fig. 34 Radio Antenna Removal/Installation
Fig. 35 Power Antenna Wire Harness & Cable
Connectors
23 - 14 BODY COMPONENTSÐXJ VEHICLESJ

²remove the vapor canister from the fender inner
panel (Figs. 42 and 45);
²remove the A/C Receiver/Drier from the fender in-
ner panel (Fig. 40); and
²if equipped, remove the Daytime Running Light
(DRL) module from the fender inner panel (Fig. 46).
²support the hood and remove the hood support rod
from the fender inner panel.
(3) Remove the hood bumper from the fender inner
panel (Fig. 47).
(4) Raise and support the vehicle.
(5) Remove the front wheel.
(6) Remove the fender liner, fender flare and re-
tainers (Fig. 48):
²remove the screws that attach the lower part of
Fig. 41 Hood Ajar Switch Removal/Installation
Fig. 42 Power Distribution Center and Vapor Canister
Fig. 43 Coolant Recovery Bottle
Fig. 39 Coolant Recovery Bottle, Windshield Washer
Fluid Reservoir & Hood Support Rod
Fig. 40 Hood Ajar Switch, Speed Servo & A/C
Receiver/Drier
JBODY COMPONENTSÐXJ VEHICLES 23 - 15

flare to the fender outer panel;
²remove the rivets that attach the flare to the air
deflector;
²remove the retainers that attach the fender liner
to the fender inner panel;
²remove the nuts that attach the fender liner to the
fender outer panel and flare retainers;
²remove the fender liner from between the fender
panels;
²remove the push-nuts that attach the retainers to
the fender outer panel; and
²remove the retainers and flare from the fender
outer panel.
(7) Remove the grille opening panel (GOP).
(8) Remove the air deflector.
(9) Remove the rocker panel moulding from the
fender.(10) Remove all the fender braces (Fig. 49).
(11) Remove the fender lower screws (Fig. 49).
(12) Remove the fender top, front and the rear
screws. Remove the fender from the inner fender
panel (Fig. 49).INSTALLATION
(1) Position the fender on the inner fender panel.
(2) Install all of the fender screws finger-tight.
(3) Install the fender braces.
(4) Align the fender with the body panels and
tighten the fender screws to 8.5 Nzm (76 in-lbs)
torque.
(5) Install the grille opening panel (GOP).
(6) Install the air deflector.
(7) Install the fender flare and retainers (Fig. 50).
Then install the fender liner.
²position the retainers and the flare on the fender;
²install the push-nuts to attach the retainers to the
fender;
²position the fender liner between the fender and
fender inner panel (Fig. 51);
Fig. 44 Speed Servo
Fig. 45 Vapor Canister
Fig. 46 Daytime Running Light (DRL) Module
Fig. 47 Hood Bumper
23 - 16 BODY COMPONENTSÐXJ VEHICLESJ

²install the nuts to attach the fender liner to the
fender and flare retainers (Fig. 48);
²install the retainers to attach the fender liner to
the fender inner panel;
²install the rivets to attach the flare to the air de-
flector (Figs. 48 and 50); and
²install the screws to attach the flare to the fender.
Tighten the screws to 1 Nzm (13 in-lbs) torque.
(8) Connect the front lamp wire harness connectors
to the engine wire harness connectors (Fig. 52).(9) Install the front lamps.
(10) Install the front bumper.
(11) Install the wheel, remove the support and
lower the vehicle.
(12) Right fender only: install the hood support rod
on the fender inner panel.
(13) Install the hood bumper on the fender inner
panel.
(14) Right fender only: install the Daytime Run-
ning Light (DRL) module on fender inner panel.
Fig. 48 Fender Flare & Liner Removal/Installation
Fig. 49 Fender Removal/Installation
JBODY COMPONENTSÐXJ VEHICLES 23 - 17