JEEP XJ 1995 Service And Repair Manual

(4) Press the bearing assembly partially from the
outboard side of the center yoke, enough to grasp by
vise jaws (Fig. 8). Be sure to remove any lube fittings
that may interfere with removal.
(5) Grasp the protruding bearing by vise jaws. Tap
the tube yoke with a mallet and drift to dislodge
from the yoke (Fig. 9).(6) Flip assembly and repeat steps 4 and 5 for removing
the opposite side bearing. This will then allow removal
of the cross centering kit assembly and spring (Fig. 10).
(7) Press the remaining bearing assemblies out the
other cross as described above to complete the disassem-
bly.
CLEANING AND INSPECTION
(1) Clean all the U-joint yoke bores with cleaning
solvent and a wire brush.
(2) Inspect the yokes for distortion, cracks and
worn bearing assembly bores.
ASSEMBLY/INSTALLATION
During installation, ensure that the spiders
and yokes are aligned to the reference marks.
(1) Fit a cross into the tube yoke (Fig. 11).
Fig. 8 Press Out Bearing
Fig. 9 Remove Bearing From Yoke
Fig. 10 Remove Centering Kit
Fig. 11 Install Cross In Yoke
16 - 12 PROPELLER SHAFTSJ

(2) Place a bearing assembly in a tube yoke hole
and over a trunnion. Keep the needle bearings up-
right in the bearing assembly (Fig. 12). A needle
roller lying at the bottom will prevent proper assem-
bly. Be sure to remove any lube fittings that may in-
terfere with removal.
(3) Press the bearing assembly in place and install
a snap ring (Fig. 13).(4) Flip the tube yoke and bearing assembly instal-
lation on the opposite trunnion. Install a snap ring
(Fig. 14).
(5) Fit the center yoke on the remaining two trun-
nions and press bearing assemblies in place, both
sides (Fig. 15). Install a snap ring.
Fig. 12 Install Bearing Assembly
Fig. 13 Press In Bearing Assembly
Fig. 14 Press In Bearing Assembly
Fig. 15 Install Center Yoke
JPROPELLER SHAFTS 16 - 13

(6) Install the centering kit assembly inside the
center yoke making sure the spring is in place (Fig.
16).
(7) Place two bearing assemblies on the remaining
cross (opposite sides). Fit the open trunnions into the
center yoke holes and the bearing assemblies into the
centering kit (Fig. 17).(8) Press the remaining two bearing assemblies
into place and install snap rings (Fig. 18).
(9) Tap the snap rings to allow them to seat into
the grooves (Fig. 19).
Fig. 16 Install Centering Kit
Fig. 17 Install Remaining Cross
Fig. 18 Press In Bearing Assembly
Fig. 19 Seat Snap Rings In Groove
16 - 14 PROPELLER SHAFTSJ

(10) Check for proper assembly. Flex the CV joint
beyond center, it should snap over-center in both di-
rections when correctly assembled (Fig. 20).(11) Install the propeller shaft. Refer to Propeller
Shaft Replacement in this Group.
TORQUE SPECIFICATIONS
PROPELLER SHAFTS AND U-JOINTS
DESCRIPTION ................................................TORQUE
Front Shaft
Transfer Case Yoke Bolts ...........27 Nzm (20 ft. lbs.)Axle Yoke Bolts ...........................19 Nzm (14 ft. lbs.)
Rear Shaft
Axle Yoke Bolts ...........................19 Nzm (14 ft. lbs.)
Fig. 20 Check Assembly
JPROPELLER SHAFTS 16 - 15

STEERING
CONTENTS
page page
GENERAL INFORMATION.................. 1
GENERAL INFORMATION................. 48
MANUAL STEERING GEAR................ 37
POWER STEERING PUMP................. 11
POWER STEERING SYSTEM DIAGNOSIS...... 3
RECIRCULATING BALL POWER STEERING
GEAR............................... 21STEERING COLUMN GENERAL SERVICEÐXJ . 47
STEERING COLUMNÐYJ................. 58
STEERING LINKAGEÐXJ................. 16
STEERING LINKAGEÐYJ................. 19
STEERING RHD......................... 74
TORQUE SPECIFICATIONS................ 78
GENERAL INFORMATION
STEERING SYSTEM COMPONENTS
Jeep vehicles can have either a manual or power
steering system (Fig. 1). A recirculating-ball type
steering gear is used for both systems.
Power steering systems use;
²Steering gear
²Pressure and return fluid hoses and fittings
²Belt driven steering pump
²Integral or remote body mounted pump reservoir
POWER STEERING GEAR
The steering gear is mounted on the left frame rail.
The gear is joined to the intermediate shaft by a uni-
versal joint coupling. The coupling helps isolate noise
and road shock from the interior.
The major internal components of the gear are the:
²Rotary valve assembly
²Steering worm shaft
²Rack piston assembly
²Pitman shaftThe movement of these parts, while turning or
parking, is aided by hydraulic pressure and flow sup-
plied by the pump. Manual steering is always avail-
able at times when the engine is not running or in
the event of pump or belt failure. Steering effort is
higher under such conditions.
The steering stub shaft, rotary valve, worm shaft,
and rack piston assembly are all in line. The oil pas-
sages are internal within the gear housing except for
pressure and return hoses between the gear and
pump.
The power steering gear has a recirculating ball
system. This acts as a rolling thread between the
worm shaft and rack piston. The worm shaft is sup-
ported by a thrust bearing at the lower end and a
bearing assembly at the upper end. When the worm
shaft is turned right, the rack piston moves up in
gear. Turning the worm shaft left moves the rack pis-
ton down in gear. The rack piston teeth mesh with
the sector, which is part of the pitman shaft. Turning
the worm shaft turns the pitman shaft, which turns
the wheels through the steering linkage.
The control valve in the steering gear directs the
power steering fluid to either side of the rack piston.
The rack piston is assisted by hydraulic pressure. If
the steering system loses hydraulic pressure, the ve-
hicle can be controlled manually, but with higher
steering effort.
An identification code located on the side cover des-
ignates the gear ratio (Fig. 2).
²Code BH designates 14:1 ratio used in XJ vehicles
²Code BF designates 13-16:1 ratio used in YJ vehi-
cles
A recirculating-ball steering gear is used with the
power (assisted) steering system (Fig. 1). The power
steering gear can be adjusted and internally serviced.
Fig. 1 Steering Gears
JSTEERING 19 - 1

POWER STEERING PUMP
Hydraulic pressure is provided for operation of the
power steering gear by a belt driven power steering
pump. The power steering pump is a constant flow
rate and displacement, vane-type pump. The internal
parts in the housing operate submerged in fluid. The
flow control orifice is part of the high pressure line
fitting. The pressure relief valve inside the flow con-
trol valve limits the pump pressure.
Power steering pumps have different pres-
sure rates and are not interchangeable with
other pumps.
The power steering pump is connected to the steer-
ing gear via high pressure and return hose. The
pump shaft has a pressed-on drive pulley that is belt
driven by the crankshaft pulley (Fig. 3).
XJ vehicles with 2.5L engines and all YJ vehicles:
The reservoir is mounted at the front left side of the
engine compartment. XJ vehicles equipped with a
4.0L engine have the reservoir attached to the pump
body with spring clips.
STEERING COLUMNS
Two general types of steering columns are installed
on Jeep vehicles: a fixed, non-tilt column and a tilt
column (Fig. 4).
The ignition key/lock cylinder is located in the
steering column. When the key/lock cylinder is
turned to the LOCK position, the ignition switch and
steering shaft cannot be operated. For vehicles withan automatic transmission, the lock mechanism also
prevents operation of the gear shift mechanism.
The center, slip-type intermediate shaft is attached
to the steering gear and steering column shaft with
universal joints.
Both types of steering columns have anti-theft pro-
visions. They are energy-absorbing.
Fig. 2 Ratio Code Location
Fig. 3 TC Series Pump With Integral Reservoir
Fig. 4 Steering Columns
19 - 2 STEERINGJ

POWER STEERING SYSTEM DIAGNOSIS
PUMP PRESSURE TEST
(1) Check belt tension and adjust as necessary.
(2) Disconnect high pressure hose at gear or pump.
Use a container for dripping fluid.
(3) Connect Gauge 7617 to both hoses using
adapter fitting (Fig. 1). Connect spare pressure hose
to gear or pump.
(4) Open the test valve completely.
(5) Start engine and let idle.
(6) Check fluid level, add fluid as necessary.
(7) Gauge should read below 862 kPa (125 psi), if
above, inspect the hoses for restrictions and repair as
necessary. The initial pressure should be in the range
of 345-552 kPa (50-80 psi).CAUTION: The following test procedure involves
testing maximum pump pressure output and flow
control valve operation. Do not leave valve closed
for more than 5 seconds as the pump could be
damaged.
(8) Close valve fully three times and record highest
pressure indicated each time.All three readings
must be above specifications and within 345
kPa (50 psi) of each other.
²Pressures above specifications but not within 345
kPa (50 psi) of each other, replace pump.
²Pressures within 345 kPa (50 psi) of each other
but below specifications, replace pump.
CAUTION: Do not force the pump to operate against
the stops for more than 2 to 4 seconds at a time.
Pump damage will result.
(9) Open the test valve, turn steering wheel ex-
treme left and right positions against the stops.
Record the highest indicated pressure at each posi-
tion. Compare readings to specifications. If highest
output pressures are not the same against either
stop, the gear is leaking internally and must be re-
paired.
Fig. 1 Pressure Test Gauge
PUMP OPERATING SPECIFICATIONS
JSTEERING 19 - 3

POWER STEERING SYSTEM DIAGNOSIS
19 - 4 STEERINGJ

POWER STEERING SYSTEM DIAGNOSIS
JSTEERING 19 - 5

POWER STEERING SYSTEM DIAGNOSIS
19 - 6 STEERINGJ