2003 JEEP GRAND CHEROKEE stall

GEAR
TABLE OF CONTENTS
page page
GEAR
DESCRIPTION.........................16
OPERATION...........................16
REMOVAL.............................16
INSTALLATION.........................16
ADJUSTMENTS
STEERING GEAR.....................18
SPECIFICATIONS
POWER STEERING GEAR..............18
SPECIAL TOOLS
POWER STEERING GEAR..............19
PITMAN SHAFT
REMOVAL.............................20INSTALLATION.........................20
PITMAN SHAFT BEARING
REMOVAL.............................22
INSTALLATION.........................22
PITMAN SHAFT SEAL
REMOVAL.............................22
INSTALLATION.........................23
RACK PISTON/VALVE ASSEMBLY
REMOVAL.............................23
INSTALLATION.........................25
STUB SHAFT HOUSING
REMOVAL.............................25
INSTALLATION.........................25
GEAR
DESCRIPTION
The power steering gear is a recirculating ball type
gear (Fig. 1) .
The following gear components can be serviced:
²Pitman Shaft and Cover
²Pitman Shaft Bearings
²Pitman Shaft Oil Seal/Dust Seal
²Stud Shaft Housing with Seal
²O-Rings and Teflon Rings
NOTE: If rack piston assembly is damaged the gear
must be replaced.
OPERATION
The gear 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 the rack piston moves. The rack pis-
ton teeth mesh with the pitman shaft. Turning the
worm shaft turns the pitman shaft, which turns the
steering linkage.
REMOVAL
(1) Place the front wheels in the straight ahead
position with the steering wheel centered and locked.
(2) Remove the air cleaner housing,(Refer to 9 -
ENGINE/AIR INTAKE SYSTEM/AIR CLEANER
HOUSING - REMOVAL).
(3) Drain or siphon the power steering system.(4) Remove the pressure and return lines (Fig.
2)from the steering gear. Refer to hose removal in
this section.
(5) Remove the column coupler shaft bolt (Fig.
2)and remove the shaft from the gear.
(6) Raise and support the vehicle.
(7) Remove the left front wheel and tire assembly.
(8) Remove the pitman arm from gear with Puller
C-4150A.
(9) Remove the windshield washer reservoir,(Refer
to 8 - ELECTRICAL/WIPERS/WASHERS/WASHER
RESERVOIR - REMOVAL).
(10) Remove the steering gear mounting bolts.
Remove the steering gear out of the engine compart-
ment (Fig. 3).
INSTALLATION
(1) Position the steering gear on the frame rail and
install the bolts. Tighten the bolts to 108 N´m (80 ft.
lbs.) torque.
(2) Install the pitman arm and tighten nut to 251
N´m (185 ft. lbs.).
(3) Install windshield washer reservoir,(Refer to 8 -
ELECTRICAL/WIPERS/WASHERS/WASHER RES-
ERVOIR - INSTALLATION).
(4) Install the wheel and tire assembly.
(5) Remove the support and lower the vehicle.
(6) Install the pressure and return hoses to the
steering gear and tighten to 20-38 N´m (14-28 ft.
lbs.).
(7) Install the column coupler shaft.
(8) Install the air cleaner housing,(Refer to 9 -
ENGINE/AIR INTAKE SYSTEM/AIR CLEANER
HOUSING - INSTALLATION).
19 - 16 GEARWJ

PITMAN SHAFT
REMOVAL
(1) Clean exposed end of pitman shaft and housing
with a wire brush.
(2) Rotate the stub shaft with a wrench (Fig.
5)from stop to stop and count the number of turns.
(3) Center the stub shaft by rotating it from the
stop 1/2 of the total amount of turns.
NOTE: The pitman shaft will not clear the housing if
it is not centered.
(4) Remove pitman shaft cover bolts and remove
the shaft assembly (Fig. 6).
(5) Remove pitman shaft cover o-ring.
(6) Remove pitman shaft dust seal from the hous-
ing with a Puller 7794-A and Slide Hammer C-637
(Fig. 7).
(7) Remove the pitman shaft oil seal retaining ring
with snap ring pliers (Fig. 8).
(8) Remove oil seal metal backup washer then
plastic backup washer from the housing.
(9) Remove pitman shaft oil seal from the housing
with a Puller 7794-A and Slide Hammer C-637 (Fig.
7).
(10) Drop Driver 8277 through the top bearing and
align the driver up with the lower bearing. (Fig. 9).
Install Handle C-4171 into the driver and remove the
lower bearing.
(11) Turn the gear over and remover the upper
bearing with Driver 8277 and Handle C-4171.
INSTALLATION
(1) Install upper pitman shaft bearing, with Driver
8294 and Handle C-4171 (Fig. 10). Drive bearing into
housing until the driver bottoms out.
NOTE: Install upper pitman shaft bearing with the
part number/letters facing the driver.
Fig. 5 Center Stub
1 - WRENCH
2 - STUB SHAFT
Fig. 6 Cover and Pitman Shaft
1 - ADJUSTER NUT
2 - PITMAN SHAFT COVER
3 - O-RING
4 - GEAR HOUSING
5 - PITMAN SHAFT
Fig. 7 Oil Seal Removal
1 - PULLER
2 - STEERING GEAR
19 - 20 GEARWJ

(2) Install lower pitman shaft bearing with the
other side Driver 8294 and Handle C-4171 (Fig. 11).
Drive bearing into housing until the bearing shoulder
is seated against the housing.
(3) Coat the oil seal and backup washers withspe-
cial greasesupplied with the new seal.
(4) Install the oil seal with Driver 8294 and Han-
dle C-4171.
(5) Install plastic backup washer.
NOTE: The plastic backup washer has a lip on the
inside diameter that faces down towards the oil
seal.
(6) Install metal backup washer.
(7) Install the retainer ring with snap ring pliers.(8) Coat the dust seal withspecial greasesup-
plied with the new seal.
(9) Install dust seal with Driver 8294 and Handle
C-4171.
(10) Install new pitman shaft cover o-ring.
(11) Install pitman shaft assembly into the hous-
ing.
(12) Install cover bolts and tighten to 62 N´m (46
ft. lbs.).
(13) Perform over-center rotation torque adjust-
ment.
Fig. 8 Oil Seal Retaining Ring
1 - SNAP RING PLIERS
2 - RETAINING RING
Fig. 9 Bearing Driver
1 - UPPER BEARING
2 - LOWER BEARING
3 - DRIVER
Fig. 10 Upper Pitman Shaft Bearing
1 - DRIVER
2 - UPPER BEARING
Fig. 11 Lower Pitman Shaft Bearing
1 - STEERING GEAR
2 - BEARING SHOULDER
3 - DRIVER
4 - LOWER BEARING
WJGEAR 19 - 21
PITMAN SHAFT (Continued)

PITMAN SHAFT BEARING
REMOVAL
(1) Clean exposed end of pitman shaft and housing
with a wire brush.
(2) Rotate the stub shaft with a wrench (Fig.
5)from stop to stop and count the number of turns.
(3) Center the stub shaft by rotating it from the
stop 1/2 of the total amount of turns.
NOTE: The pitman shaft will not clear the housing if
it is not centered.
(4) Remove pitman shaft cover bolts and remove
the shaft assembly (Fig. 6).
(5) Remove pitman shaft cover o-ring.
(6) Remove pitman shaft dust seal from the hous-
ing with a Puller 7794-A and Slide Hammer C-637
(Fig. 7).
(7) Remove the pitman shaft oil seal retaining ring
with snap ring pliers (Fig. 8).
(8) Remove oil seal metal backup washer then
plastic backup washer from the housing (Fig. 12).
(9)
Remove pitman shaft oil seal from the housing
with a Puller 7794-A and Slide Hammer C-637 (Fig. 7).
(10) Drop Driver 8277 through the top bearing and
align the driver up with the lower bearing. (Fig. 9).
Install Handle C-4171 into the driver and remove the
lower bearing.
(11) Turn the gear over and remover the upper
bearing with Driver 8277 and Handle C-4171.
INSTALLATION
(1) Install upper pitman shaft bearing, with Driver
8294 and Handle C-4171 (Fig. 10). Drive bearing into
housing until the driver bottoms out.NOTE: Install upper pitman shaft bearing with the
part number/letters facing the driver.
(2) Install lower pitman shaft bearing with the
other side Driver 8294 and Handle C-4171 (Fig. 11).
Drive bearing into housing until the bearing shoulder
is seated against the housing.
(3) Coat the oil seal and backup washers withspe-
cial greasesupplied with the new seal.
(4) Install the oil seal with Driver 8294 and Han-
dle C-4171.
(5) Install plastic backup washer.
NOTE: The plastic backup washer has a lip on the
inside diameter that faces down towards the oil
seal.
(6) Install metal backup washer.
(7) Install the retainer ring with snap ring pliers.
(8) Coat the dust seal withspecial greasesup-
plied with the new seal.
(9) Install dust seal with Driver 8294 and Handle
C-4171.
(10) Install new pitman shaft cover o-ring.
(11) Install pitman shaft assembly into the hous-
ing.
(12) Install cover bolts and tighten to 62 N´m (46
ft. lbs.).
(13) Perform over-center rotation torque adjust-
ment.
PITMAN SHAFT SEAL
REMOVAL
(1) Clean exposed end of pitman shaft and housing
with a wire brush.
(2) Rotate the stub shaft with a wrench (Fig.
5)from stop to stop and count the number of turns.
(3) Center the stub shaft by rotating it from the
stop 1/2 of the total amount of turns.
NOTE: The pitman shaft will not clear the housing if
it is not centered.
(4) Remove pitman shaft cover bolts and remove
the shaft assembly (Fig. 6).
(5) Remove pitman shaft cover o-ring.
(6) Remove pitman shaft dust seal from the hous-
ing with a Puller 7794-A and Slide Hammer C-637
(Fig. 7).
(7) Remove the pitman shaft oil seal retaining ring
with snap ring pliers (Fig. 8).
(8) Remove oil seal metal backup washer then
plastic backup washer from the housing (Fig. 12).
Fig. 12 Backup Washers
1 - METAL BACK UP WASHER
2 - PLASTIC BACK UP WASHER
19 - 22 GEARWJ

(9) Remove pitman shaft oil seal from the housing
with a Puller 7794-A and Slide Hammer C-637 (Fig.
7).
(10) Drop Driver 8277 through the top bearing and
align the driver up with the lower bearing. (Fig. 9).
Install Handle C-4171 into the driver and remove the
lower bearing.
(11) Turn the gear over and remover the upper
bearing with Driver 8277 and Handle C-4171.
INSTALLATION
(1) Install upper pitman shaft bearing, with Driver
8294 and Handle C-4171 (Fig. 10). Drive bearing into
housing until the driver bottoms out.
NOTE: Install upper pitman shaft bearing with the
part number/letters facing the driver.
(2) Install lower pitman shaft bearing with the
other side Driver 8294 and Handle C-4171 (Fig. 11).
Drive bearing into housing until the bearing shoulder
is seated against the housing.
(3) Coat the oil seal and backup washers withspe-
cial greasesupplied with the new seal.
(4) Install the oil seal with Driver 8294 and Han-
dle C-4171.
(5) Install plastic backup washer.
NOTE: The plastic backup washer has a lip on the
inside diameter that faces down towards the oil
seal.
(6) Install metal backup washer.
(7) Install the retainer ring with snap ring pliers.
(8) Coat the dust seal withspecial greasesup-
plied with the new seal.
(9) Install dust seal with Driver 8294 and Handle
C-4171.
(10) Install new pitman shaft cover o-ring.
(11) Install pitman shaft assembly into the hous-
ing.
(12) Install cover bolts and tighten to 62 N´m (46
ft. lbs.).
(13) Perform over-center rotation torque adjust-
ment.
RACK PISTON/VALVE
ASSEMBLY
REMOVAL
(1) Remove the steering gear (Refer to 19 -
STEERING/GEAR - REMOVAL).
(2) Clean exposed end of pitman shaft and housing
with a wire brush.
(3) Rotate the stub shaft with a wrench (Fig.
5)from stop to stop and count the number of turns.(4) Center the stub shaft by rotating it from the
stop 1/2 of the total amount of turns.
NOTE: The pitman shaft will not clear the housing if
it is not centered.
(5) Remove pitman shaft cover bolts and remove
the shaft assembly (Fig. 6).
(6) Remove the pitman shaft cover o-ring.
(7) Remove stub shaft housing bolts (Fig. 13).
(8) Remove the housing from the stub shaft (Fig.
14).
Fig. 13 Stub Shaft Housing
1 - STUB SHAFT HOUSING
2 - BOLTS
3 - STUB SHAFT
Fig. 14 Housing Removal
1 - STEERING GEAR
2 - STUB SHAFT HOUSING
WJGEAR 19 - 23
PITMAN SHAFT SEAL (Continued)

INSTALLATION
(1) Lubricate new o-ring and teflon rings with
power steering fluid and install on the rack piston/
valve assembly.
(2) Lubricate the rack piston/valve assembly with
power steering fluid.
(3) Slide the assembly into the gear housing.
(4) Install new stub shaft housing o-rings and
install the housing. Tighten the housing bolts to 62
N´m (46 ft. lbs.).
(5) Install new o-ring on the pitman shaft cover.
(6) Install the pitman shaft into the gear housing.
(7) Install the pitman shaft cover bolts and tighten
to 62 N´m (46 ft. lbs.).
(8) Perform over-center rotation torque adjustment
(Refer to 19 - STEERING/GEAR - ADJUSTMENTS)..
(9) Install the steering gear (Refer to 19 - STEER-
ING/GEAR - INSTALLATION).
(10) Fill the power steering pump (Refer to 19 -
STEERING/PUMP - STANDARD PROCEDURE).
STUB SHAFT HOUSING
REMOVAL
NOTE: If stub shaft housing, seal or bearing is dam-
aged the housing must be replaced.
(1) Remove the steering gear (Refer to 19 -
STEERING/GEAR - REMOVAL).
(2) Remove stub shaft housing bolts (Fig. 19).
(3) Remove housing from the steering gear (Fig.
20).
(4) Remove stub shaft housing o-rings (Fig. 15).
INSTALLATION
NOTE: If stub shaft housing, seal or bearing is dam-
aged the housing must be replaced.
(1) Grease stub shaft seal withspecial grease-
supplied with new stub shaft housing.
(2) Install new stub shaft housing o-rings.
(3) Install housing on the steering gear.
(4) Install the housing bolts and tighten to 62 N´m
( 46 ft. lbs.).
(5) Install the steering gear (Refer to 19 - STEER-
ING/GEAR - INSTALLATION).
(6) Fill the power steering pump (Refer to 19 -
STEERING/PUMP - STANDARD PROCEDURE).
Fig. 19 Stub Shaft Housing
1 - STUB SHAFT HOUSING
2 - BOLTS
3 - STUB SHAFT
Fig. 20 Housing Removal
1 - STEERING GEAR
2 - HOUSING
WJGEAR 19 - 25
RACK PISTON/VALVE ASSEMBLY (Continued)

LINKAGE
TABLE OF CONTENTS
page page
LINKAGE
DESCRIPTION
STEERING LINKAGE ± RIGHT HAND DRIVE
(RHD) VEHICLES......................26
DESCRIPTION........................26
SPECIFICATIONS
TORQUE CHART......................28
SPECIAL TOOLS
STEERING LINKAGE...................28
DAMPER
DESCRIPTION.........................28
OPERATION...........................28
REMOVAL.............................28
INSTALLATION.........................29
DRAG LINK
DESCRIPTION.........................29OPERATION...........................29
REMOVAL.............................29
INSTALLATION.........................29
PITMAN ARM
DESCRIPTION.........................29
OPERATION...........................29
REMOVAL.............................29
INSTALLATION.........................30
TIE ROD END
DESCRIPTION.........................30
OPERATION...........................30
REMOVAL.............................30
INSTALLATION.........................30
LINKAGE
DESCRIPTION
STEERING LINKAGE ± RIGHT HAND DRIVE
(RHD) VEHICLES
Vehicles equipped with right hand drive (RHD)
steering utilize the same components of left hand
drive vehicles. The RHD Steering linkage is designed
as a mirror image of left hand drive linkage with the
exception of the steering damper (Fig. 1), which is
mounted on the same side of the vehicle weather
RHD or LHD. See figure below for reference. All
specifications are the same as LHD. Refer to Group
19, Steering of the gasoline engine service manual for
additional information.
DESCRIPTION
The steering linkage consists of a pitman arm,
drag link, tie rod, and steering dampener (Fig. 2) .
An adjustment sleeve on the tie rod is used to set
wheel toe position. The sleeve on the drag link is
used for steering wheel centering.
CAUTION: If any steering components are replaced
or serviced an alignment must be performed, to
ensure the vehicle meets all alignment specifica-
tions.
CAUTION: Components attached with a nut and cot-
ter pin must be torqued to specification. Then if the
slot in the nut does not line up with the cotter pin
hole, tighten nut until it is aligned. Never loosen the
nut to align the cotter pin hole.
19 - 26 LINKAGEWJ

INSTALLATION
(1) Install the steering damper to the axle bracket
and tie rod.
(2) Install the steering damper bolt in the axle
bracket and tighten bolt to 88 N´m (65 ft. lbs.).
(3) Install the nut at the tie rod and tighten to 41
N´m (30 ft. lbs.).
DRAG LINK
DESCRIPTION
The drag link and ends are comprised of two forged
ends connected by a steel adjusting tube. The drag
link connects the steering gear pitman arm to the
steering knuckle. The larger offset end is attached to
the pitman arm.
OPERATION
The sleeve is used for steering wheel centering.
REMOVAL
(1) Raise and support the vehicle.
(2) Remove right wheel and tire assembly.
(3) Remove the cotter pins and nuts at the right
steering knuckle and pitman arm (Fig. 4) .
(4) Remove the drag link from the steering
knuckle and pitman arm Puller C-3894-A.
(5) Loosen adjustment sleeve clamp bolts and
unscrew the tie rod ends from the adjustment sleeve.
INSTALLATION
(1) Screw the tie rod ends into the adjustment
sleeve.
(2) Install the drag link onto the right steering
knuckle and pitman arm.(3) Tighten the nut at the steering knuckle to 47
N´m (35 ft. lbs.). Tighten the pitman nut to 88 N´m
(65 ft. lbs.). Install new cotter pins.
(4) Position clamp bolts to their original position
and tighten to 41 N´m (30 ft. lbs.).
(5) Install right wheel and tire assembly.
(6) Remove support and lower the vehicle.
(7) Center the steering wheel.
PITMAN ARM
DESCRIPTION
The pitman arm is attached at one end of the
steering gear's sector shaft. The other end is con-
nected to the drag link.
OPERATION
The pitman arm transfers rotary motion into side
to side motion.
REMOVAL
(1) Remove the cotter pin and nut from the drag
link at the pitman arm (Fig. 5) .
(2) Remove the drag link ball stud from the pit-
man arm with a puller.
(3) Remove the nut and washer from the steering
gear shaft. Mark the pitman shaft and pitman arm
for installation reference. Remove the pitman arm
from steering gear with Puller C-4150A.
Fig. 3 Steering Damper
1 - DAMPER
2 - TIE ROD
Fig. 4 Drag Link
1 - STEERING GEAR
2 - PITMAN ARM
3 - CLAMP
4 - DRAG LINK
5 - CLAMP
WJLINKAGE 19 - 29
DAMPER (Continued)