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TORQUE SPECIFICATIONS
11 - 10 EXHAUST SYSTEM AND INTAKE MANIFOLDJ
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FRAME AND BUMPERS
CONTENTS
page page
BUMPERS.............................. 5
BUMPERS............................. 16FRAME................................. 1
FRAME................................ 10
FRAME
INDEX
page page
Frame Dimensions......................... 1
Front Skid Plate........................... 1
Fuel Filler Hose Splash ShieldÐXJ Vehicles...... 4
Fuel Tank Skid Plate........................ 3Fuel Tank Support Strap..................... 4
General Information........................ 1
Transfer Case Skid Plate.................... 3
GENERAL INFORMATION
Jeep XJ Vehicles (Fig. 1) and the cab section of
Jeep are constructed as a unitized body and frame.
Jeep XJ unibodies are constructed from special
high-strength steel and coated metals. These types of
metals reduce weight and provide strength.
A vehicle constructed as a unibody reacts differ-
ently to the impact of a collision. While the damage
at the immediate point of impact is easily recogniz-
able, the damage must be diagnosed to expose it.
With unibody construction, there are five logical ar-
eas to examine to expose damage:
²Damage at the immediate point of impactÐpri-
mary damage.²The other (lessor) body damageÐsecondary dam-
age.
²Damage to the exterior trim and other surface-at-
tached components.
²Damage to the mechanical components.
²The interior trim and accessory damage.
When there is damage to a vehicle, the alignment
points must be returned too specifications.
FRAME DIMENSIONS
Frame dimensions are listed in millimeter scale.
All dimensions are from center to center of Principal
Locating Point (PLP), or from center to center of PLP
and fastener location (Fig. 2).
FRONT SKID PLATE
REMOVAL
(1) Remove the screws that attach skid plate to
side sills (Fig. 3).
(2) Remove the nuts that attach the skid plate to
the crossmember (Fig. 3).
(3) Remove the skid plate from the vehicle (Fig. 3).
INSTALLATION
(1) Position the skid plate at front crossmember
and side sills (Fig. 3).
(2) Install the nuts to attach the skid plate to
crossmember.
(3) Install the screws to attach skid plate to side
sills.
Fig. 1 JeepÐXJ
JFRAME AND BUMPERS 13 - 1
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Fig. 2 Frame Alignment Reference DimensionsÐXJ Vehicles
13 - 2 XJÐFRAMEJ
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TRANSFER CASE SKID PLATE
REMOVAL
(1) Support the skid plate.
(2) Remove the bolts that attach the skid plate to
the transmission support crossmember and frame sill
(Fig. 4).
(3) Remove the support and skid plate from the ve-
hicle.
INSTALLATION
(1) Position and support the skid plate at the
frame sill and transmission support crossmember
(Fig. 4).(2) Attach the skid plate to the frame sill and
crossmember with bolts. Tighten bolts to 22 Nzm (16
ft. lbs.) torque.
FUEL TANK SKID PLATE
REMOVAL
(1) Position a support under skid plate.
(2) Remove the bolts that attach skid plate to un-
derbody side rails (Fig. 5 and 6).
(3) Remove the support and the skid plate from
the vehicle.
INSTALLATION
(1) Position and support skid plate under fuel
tank.
(2) Install bolts to attach the skid plate to under-
body rails. Tighten the bolts to 50 Nzm (37 ft. lbs.)
torque.
(3) Remove the support from under skid plate.
Fig. 3 Front Skid Plate Removal/Installation
Fig. 4 Transfer Case Skid Plate
Fig. 5 Fuel Tank Skid Plate W/O Trailer Hitch Or Tow
Hook
Fig. 6 Fuel Tank Skid Plate With Trailer Hitch Or
Tow Hook
JXJÐFRAME 13 - 3
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FUEL FILLER HOSE SPLASH SHIELDÐXJ
VEHICLES
REMOVAL
(1) Remove the screws that attach fuel filler hose
splash shield to wheelhouse panel and frame rail
(Fig. 7).
(2) Remove the hose splash shield from wheel-
house panel and frame rail (Fig. 7).
INSTALLATION
(1) Position fuel filler hose splash shield at wheel-
house panel and frame rail.
(2) Install screws to attach splash shield to wheel-
house panel and frame rail.
FUEL TANK SUPPORT STRAP
SERVICE INFORMATION
XJ fuel tank support straps are attached to the un-
derside of the vehicle via T-slots and hole-slots in the
frame members.
REMOVAL
(1) If equipped, position a support under skid
plate.
(2) If equipped, remove the bolts that attach skid
plate to underbody side rails.
(3) If applicable, remove the support and skid plate
from fuel tank.
(4) Support fuel tank.
(5) Loosen nut from fuel tank support strap bolt to
allow bolt head to be removed from hole-slot in frame
member (Fig. 8).
(6) Remove the strap T-end from frame member T-
slot (Fig. 9).
(7) Separate support strap from fuel tank and re-
move it from vehicle.
INSTALLATION
(1) Position support strap around fuel tank.
(2) Insert strap T-end in frame member T-slot.
(3) Insert bolt in hole-slot in frame member.
Tighten nut on the bolt until bolt-head and T-end are
seat and strap is tight against the bottom of fuel
tank.
(4) Remove the support from the fuel tank.
(5) If removed, position and support and the fuel
tank skid plate under the fuel tank.
(6) If applicable, install the bolts that attach the
skid plate to the underbody side rails. Tighten the
bolts to 50 Nzm (37 ft. lbs.) torque.
(7) Remove the support from under the skid plate.
Fig. 7 Fuel Filler Hose Splash ShieldÐXJ Vehicles
Fig. 8 Fuel Tank Support StrapÐXJ Vehicles
Fig. 9 Fuel Tank Support StrapsÐXJ Vehicles
13 - 4 XJÐFRAMEJ
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BUMPERS
INDEX
page page
Front Bumper............................. 5
Front Tow Hooks........................... 7Rear Bumper............................. 8
Rear Tow Hook............................ 9
FRONT BUMPER
REMOVAL/DISASSEMBLY
(1) The bumper guards, end caps and tow hooks can
be removed from XJ front bumpers with the bumper at-
tached to the vehicle. Do not remove the bumper from
the vehicle if only these components require service.
If equipped with a brush guard, refer to the Brush
Guard Removal within Group 23, Body Components.(2) Disconnect the fog lamp wire harness connec-
tors, if equipped (Fig. 1).
(3) Disconnect the vacuum reservoir tube harness
connectors (Fig. 2 and 3).
(4) Remove the locknuts and Torx-head bolts that
attach the tow hook straps (Fig. 4) to the underbody
sillmember.
Fig. 1 Fog Lamp Wire Harness Connector
Fig. 2 Vacuum ReservoirÐLeft Side
Fig. 3 Vacuum ReservoirÐRight Side With Speed
Control Only
Fig. 4 Tow Hook & StrapÐXJ Vehicles
JXJÐBUMPERS 13 - 5
Page 1391 of 2158
The retaining screws and the steering gear
skid plate must be removed before the left
strap can be removed from the sillmember.
(5) Detach the tow hook straps from the sillmem-
ber.
(6) Support the bumper.
(7) Remove the bolts that attach the bumper sup-
port brackets to the right and left sillmembers (Fig.
5).
(8) Remove the support and the bumper from the
vehicle (Fig. 5).
(9) Remove the nuts and bolts that attach the tow
hooks to the bumper support brackets.
(10) Remove the support brackets (Fig. 6), bumper
guards (Fig. 7) and caps (Fig. 8) from the bumper
rail.(11) Remove the license plate bracket (Fig. 9), if
equipped, from the bumper rail.
Fig. 5 Front Bumper Removal/Installation
Fig. 6 Bumper Support Bracket Removal/Installation
Fig. 7 Bumper Guard Removal/Installation
Fig. 8 Bumper End Cap Removal/Installation
Fig. 9 Bumper License Plate Bracket Removal/
Installation
13 - 6 XJÐBUMPERSJ
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(12) Remove the fog lamps (Fig. 10) from the
bumper rail.
(13) If necessary, remove the vacuum reservoir(s)
from the bumper rail.
(14) If necessary, remove the sill crossmember re-
inforcement brackets from the sillmembers.
ASSEMBLY/INSTALLATION
(1) If removed, install the sill crossmember rein-
forcement brackets on the sillmembers (Fig. 11).
Tighten bolts to 56 Nzm (41 ft. lbs.) torque.
(2) If equipped, install the bumper support brack-
ets and bumper guards on the bumper rail. Tighten
hardware in the sequence indicated in (Fig. 6).
Tighten the locknuts with 20 Nzm (15 ft. lbs.) torque.
Tighten bolts to 56 Nzm (41 ft. lbs.) torque.
(3) If not equipped with bumper guards, install the
bumper support brackets on the bumper rail. Tighten
bolts to 56 Nzm (41 ft. lbs.) torque.
(4) Install tow hooks. Tighten nuts with 100 Nzm
(74 ft. lbs.) torque.
(5) Install the bumper end caps on the bumper
rail. Tighten nuts with 8 Nzm (72 in. lbs.) torque.(6) Install the license plate bracket on the bumper
rail. Tighten the nuts securely.
(7) Install the fog lamps on the bumper rail.
Tighten the nuts to 20 Nzm (15 ft. lbs.) torque.
(8) If removed, install the vacuum reservoir(s) on
the bumper rail. Tighten the retaining screws and
bolts to 8 Nzm (72 in. lbs.) torque.
(9) Position and support the bumper at the front of
the vehicle.
(10) Attach the bumper support brackets to the
right and left sillmembers and reinforcement brack-
ets. Tighten screws and bolts to 56 Nzm (41 ft. lbs.)
torque.
(11) Install the Torx-head bolts and locknuts that
attach the tow hook straps to the underbody sillmem-
ber. Tighten locknuts with 30 Nzm (22 ft. lbs.) torque.
Install the steering gear skid plate and screws
after the left tow hook strap has been installed.
(12) Connect the fog lamp wire harness connectors.
(13) Connect the vacuum reservoir tube harness
connectors.
(14) Remove the bumper support.
FRONT TOW HOOKS
If a tow hook must be replaced or removed only for
service access, remove the nuts and bolts that attach
it to the bumper support bracket. When installing a
tow hook, tighten nuts with 100 Nzm (74 ft. lbs.)
torque.
If a tow hook/bumper support bracket must be re-
placed, refer to the following removal and installation
procedures.
REMOVAL
If equipped with a brush guard, refer to the Brush
Guard Removal within Group 23, Body Components.
(1) Disconnect the fog lamp wire harness connec-
tors, if equipped.
(2) Disconnect the vacuum reservoir tube harness
connectors.
(3) Support the bumper.
(4) Remove the bolts that attach the bumper sup-
port brackets to the right and left sillmembers.
(5) Remove the locknuts and Torx-head bolts that
attach the tow hook straps to the underbody sillmem-
ber.
The retaining screws and the steering gear
skid plate must be removed before the left
strap can be removed from the sillmember.
(6) Detach the tow hook straps from the sillmem-
ber.
(7) Remove the support and the bumper from the
vehicle.
(8) Remove the nuts and bolts that attach the tow
hooks to the bumper support brackets.
(9) Remove the tow hook from the bumper support
bracket.
Fig. 10 Fog Lamp
Fig. 11 Reinforcement Brackets
JXJÐBUMPERS 13 - 7