
INSTALLATION
(1) Install the rear bracket to engine. Install
screws finger tight.
(2) Tighten front screws to 48 Nzm (35 ft. lbs.)
torque. Tighten side screw to 48 Nzm (35 ft. lbs.)
torque. It is important to torque the front screws
FIRST and the side screw LAST. This will prevent
the bracket from twisting or distorting.
(3) Install fan to pulley and hub. Tighten the nuts
to 27 Nzm (20 ft. lbs.) torque.
(4) Install air conditioning bracket and compressor
to engine. Refer to Group 24, Heating and Air Condi-
tioning for installation procedures.(5) Loose assemble screws through front bracket,
pump and into rear bracket.
(6) Install screws that attach the front bracket to
the rear bracket (Fig. 8). Tighten the screws to 27
Nzm (20 ft. lbs.) torque (Fig. 7).
(7) Install belt, turn tensioner clockwise and slip
belt onto pulley (Fig. 6).
(8) Install pressure and return lines to pump. Re-
fer to Pressure and Return Line Replacement in this
section.
(9) After installation, add power steering fluid, in-
spect and test for fluid leaks. Refer to Power Steering
PumpÐInitial Operation.
Fig. 11 Rear Bracket (Side View)Fig. 10 Rear Bracket (Front View)
JSTEERING 19 - 77

(7) Disconnect transfer case shift linkage at trans-
fer case.
(8) Disconnect vehicle speed sensor wires and
transfer case vent hose.
(9) Remove slave cylinder from clutch housing.
(10) Disconnect transmission shift lever as follows:
(a) Lower transmission-transfer case assembly
approximately 7-8 cm (3 in.) for access to shift le-
ver.
(b) Reach up and around transmission case and
unseat shift lever dust boot from transmission shift
tower (Fig. 6). Move boot upward on shift lever for
access to retainer that secures lever in shift tower.
(c) Reach up and around transmission case and
press shift lever retainer downward with your fin-
gers. Turn retainer counterclockwise to release it.
(d) Lift lever and retainer out of shift tower (Fig.
6).Do not remove the shift lever from the
floorpan boots. Leave the lever in place for
later transmission installation.
(11) Mark front and rear propeller shafts for in-
stallation alignment (Fig. 7). Then remove both
shafts.
(12) Remove crankshaft position position sensor
(Figs. 8, 9).
CAUTION: It is important that the crankshaft posi-
tion sensor be removed prior to transmission re-
moval. The sensor can easily be damaged if left in
place during removal operations.
(13) Unclip wire harnesses from transmission and
transfer case.
(14) Remove slave cylinder from clutch housing.
(15) Support transmission with transmission jack.
(16) Remove nuts attaching transfer case to trans-
mission and remove transfer case.
(17) Secure transmission to jack with safety
chains.
(18) Remove clutch housing brace rod.(19) Remove clutch housing-to-engine bolts.
(20) Pull transmission jack rearward until input
shaft clears clutch. Then slide transmission out from
under vehicle.
Fig. 6 Removing/Installing Shift Lever
Fig. 7 Marking Propeller Shaft And Axle Yokes
Fig. 8 Crankshaft Position Sensor (2.5L)
Fig. 9 Crankshaft Position Sensor (4.0L)
21 - 4 AX 4/5 MANUAL TRANSMISSIONJ

(21) Remove clutch release bearing, release fork
and retainer clip.
(22) Remove clutch housing from transmission.
TRANSMISSION INSTALLATION
(1) Install clutch housing on transmission. Tighten
housing bolts to 37 Nzm (27 ft. lbs.) torque.
(2) Lubricate contact surfaces of release fork pivot
ball stud and release fork with high temp grease.
Then install release bearing, fork and retainer clip.
(3) Mount transmission on transmission jack.
(4) Lightly lubricate pilot bearing and transmis-
sion input shaft splines with Mopar high temp
grease.
(5) Align transmission input shaft, release bearing,
and clutch disc splines. Then slide transmission into
place.
(6) Install and tighten clutch housing-to-engine
bolts to 38 Nzm (28 ft. lbs.) torque.Be sure the
housing is properly seated on engine block be-
fore tightening bolts.
(7) Lower transmission approximately 7-8 cm (3
in.) for access to shift tower. Be sure transmission is
in first or third gear.
(8) Reach up and around transmission and insert
shift lever in shift tower. Press lever retainer down-
ward and turn it clockwise to lock it in place. Then
install lever dust boot on shift tower.
(9) Install slave cylinder in clutch housing.
(10) Align and install transfer case on and trans-
mission. Tighten transfer case-to-transmission nuts
to 35 Nzm (26 ft. lbs.) torque.
(11) Connect transfer case vent hose and shift link-
age. Check and adjust linkage if necessary.
(12) Connect transfer case vent hose.
(13) Secure wire harnesses in clips/tie straps on
transmission and transfer case.
(14) Connect backup light switch wires.
(15) Connect vehicle speed sensor wires.
(16) Install and connect crankshaft position sensor.
(17) Install rear crossmember (Fig. 5). On XJ,
tighten crossmember-to-frame bolts to 41 Nzm (31 ft.
lbs.) torque. Then tighten transmission-to-rear sup-
port bolts/nuts to 45 Nzm (33 ft. lbs.) torque. On YJ,
tighten bolts/nuts to indicated torque (Fig. 5).
(18) Remove jack stand.
(19) Align and install front/rear propeller shafts.
Tighten shaft U-joint clamp bolts to 19 Nzm (170 in.
lbs.) torque.
(20) Install skid plate, if equipped. Tighten bolts to
42 Nzm (31 ft. lbs.) torque. Tighten stud nuts to 17
Nzm (150 in. lbs.) torque.
(21) Top off transmission and transfer case lubri-
cant levels.
(22) Lower vehicle.
TRANSMISSION DISASSEMBLY AND OVERHAUL
ADAPTER HOUSING AND FRONT BEARING
RETAINER REMOVAL
(1) Drain transmission lubricant.
(2) Remove release bearing and lever.
(3) Remove clutch housing bolts and remove hous-
ing.
(4) On 2-wheel drive models, remove vehicle speed
sensor, speedometer adapter and speedometer driven
gear. Then remove extension housing seal (Fig. 1).
(5) Remove detent spring and ball. Remove detent
plug (Fig. 2) and remove detent spring and ball with
pencil magnet.
Fig. 1 Removing 2-Wheel Drive Extension Housing
Seal
Fig. 2 Detent Ball Plug Location
JAX 4/5 MANUAL TRANSMISSION 21 - 5

(6) On XJ, remove rear crossmember. On YJ, re-
move skid plate (Fig. 1).
(7) Disconnect transmission shift linkage, speed-
ometer cable, transfer case vacuum lines and clutch
hydraulic lines.
(8) Lower transmission-transfer case assembly no
more than 7.6 cm (3 in.) for access to shift lever.
(9) Reach up and around transmission case and
unseat shift lever dust boot from transmission shift
tower (Fig. 2). Move boot upward on shift lever for
access to lever retainer.
(10) Disengage shift lever as follows:
(a) Reach up and around transmission case and
press shift lever retainer downward with your fin-
gers.
(b) Turn retainer counterclockwise to release it.
(c) Lift lever and retainer out of shift tower (Fig.
2).It is not necessary to remove shift lever
from floorpan boot. Simply leave lever in
place for later installation.(11) Mark front and rear propeller shafts for in-
stallation alignment (Fig. 2). Then remove both
shafts.
(12) Remove crankshaft position sensor (Fig. 4).
(13) Disconnect transmission and transfer case
vent hoses.
(14) Remove slave cylinder from clutch housing.
(15) Remove wire harnesses from clips/tie straps
on transmission and transfer case.
(16) Support transmission-transfer case assembly
with transmission jack. Secure assembly to jack with
safety chains.
(17) Reposition adjustable jack stand under engine.
Be sure to place wood block between jack and oil
pan.
(18) Remove clutch housing brace rod.
(19) Remove clutch housing-to-engine bolts and re-
move transmission-transfer case assembly.
(20) Remove bolts attaching transmission to trans-
fer case and separate components.
(21) Remove release bearing, fork and retainer
clip.
(22) Remove clutch housing from transmission.
TRANSMISSION INSTALLATION
(1) Install clutch housing on transmission. Tighten
housing bolts to 37 Nzm (27 ft-lbs) torque.
(2) Lubricate contact surfaces of release fork, lever
and pivot ball stud. Then install bearing, fork and
clip in clutch housing.
(3) Mount transmission on transmission jack. Se-
cure transmission with safety chains.
(4) Lightly lubricate pilot bearing and transmis-
sion input shaft splines with Mopar high tempera-
ture grease.
(5) Align transmission input shaft and clutch disc
splines and install transmission.
Fig. 2 Removing/Installing Shift Lever
Fig. 3 Marking Propeller Shaft And Axle Yoke
Fig. 4 Crankshaft Position Sensor Location
21 - 36 AX 15 MANUAL TRANSMISSIONJ

(6) Install and tighten clutch housing-to-engine
bolts to 38 Nzm (28 ft. lbs.) torque.Be sure housing
is properly seated on engine before tightening
bolts.
(7) Lower transmission no more than 7.6 cm (3 in.)
for access to the shift tower.
(8) Reach up and around the transmission and in-
sert shift lever in shift tower. Press lever retainer
downward and turn it clockwise to lock it in place.
Then install lever dust boot on shift tower.
(9) Install and connect crankshaft position sensor.
(10) Align and install transfer case on transmis-
sion. Tighten transfer case attaching nuts to 35 Nzm
(26 ft. lbs.) torque.
(11) Connect transfer case vacuum and vent hoses.
(12) Install and connect transfer case shift linkage.
Check and adjust linkage if necessary.
(13) Secure wire harnesses to clips/tie straps on
transmission and transfer case.
(14) Connect backup light switch wires.
(15) Install clutch slave cylinder.
(16) Connect vehicle speed sensor wires.
(17) On XJ, install rear crossmember and attach
cushion and bracket. Tighten crossmember-to-frame
bolts to 41 Nzm (30 ft. lbs.) torque. Tighten transmis-
sion-to-rear cushion and bracket bolts/nuts to 45 Nzm
(33 ft. lbs.) torque.
(18) On YJ, install rear cushion and bracket and
skid plate. Tighten attaching bolts/nuts to indicated
torque (Fig. 1).
(19) Align and install front/rear propeller shafts.
Tighten shaft U-joint clamp bolts to 19 Nzm (170 in.
lbs.) torque.
(20) On XJ, install skid plate if removed. Tighten
bolts to 42 Nzm (31 ft. lbs.) torque. Tighten stud nuts
to 17 Nzm (150 in. lbs.) torque.
(21) Top off transmission and transfer lubricant
levels.
(22) Remove supports and lower vehicle.
TRANSMISSION DISASSEMBLY AND OVERHAUL
ADAPTER HOUSING REMOVAL
(1) Remove release bearing, release lever and re-
lease fork from clutch housing. Then remove clutch
housing from transmission.
(2) Remove backup light switch. Then remove
drain plug (Fig. 1) and drain transmission lubricant
into pan.
(3) Remove shift tower bolts and remove tower
from adapter or extension housing (Fig. 2).
(4) Remove gasket from shift tower (Fig. 3).
Fig. 1 Drain Plug And Backup Light Switch Location
Fig. 2 Shift Tower Removal/Installation
Fig. 3 Shift Tower Gasket Removal/Installation
JAX 15 MANUAL TRANSMISSION 21 - 37

speed sensor and metal adapter (Fig. 25). Service
procedures for both styles are described in the follow-
ing procedures.
SPEEDOMETER ASSEMBLY REMOVAL (WITH
UNIT STYLE SENSOR)
(1) Raise vehicle.
(2) Disconnect wires from vehicle speed sensor.
(3) Remove adapter clamp and screw (Fig. 24).
(4) Remove speed sensor and speedometer adapter
as assembly.
(5) Remove speed sensor retaining screw and re-
move sensor from adapter.
(6) Remove speedometer pinion from adapter.
(7) Inspect sensor and adapter O-rings (Fig. 24).
Remove and discard O-rings if worn or damaged.
(8) Inspect terminal pins in vehicle speed sensor.
Clean pins with Mopar electrical spray cleaner if
dirty or oxidized. Replace sensor if faulty, or pins are
loose, severely corroded, or damaged.
SPEEDOMETER INSTALLATION AND
INDEXING (UNIT STYLE)
(1) Thoroughly clean adapter flange and adapter
mounting surface in housing. Surfaces must be clean
for proper adapter alignment and speedometer oper-
ation.
(2) Install new O-rings on speed sensor and speed-
ometer adapter if necessary (Fig. 25).
(3) Lubricate sensor and adapter O-rings with
transmission fluid.
(4) Install vehicle speed sensor in speedometer
adapter. Tighten sensor attaching screw to 2-3 Nzm
(15-27 in. lbs.) torque.(5) Install speedometer pinion in adapter.
(6) Count number of teeth on speedometer pinion.
Do this before installing assembly in housing. Then
lubricate pinion teeth with transmission fluid.
(7) Note index numbers on adapter body (Fig. 25).
These numbers will correspond to number of teeth on
pinion.
(8) Install speedometer assembly in housing.
(9) Rotate adapter until requiredrange numbers
are at 6 o-clock position. Be sure range index
numbers correspond to number of teeth on pin-
ion gear.
(10) Install speedometer adapter clamp and retain-
ing screw. Tighten clamp screw to 10-12 Nzm (90-110
in. lbs.) torque.
(11) Connect wires to vehicle speed sensor.
(12) Lower vehicle and top off transmission fluid
level if necessary.
SPEEDOMETER COMPONENT REMOVAL
(TWO-PIECE SENSOR)
(1) Raise vehicle.
(2) Disconnect speed sensor wires.
(3) Remove bolt attaching vehicle speed sensor to
sensor adapter. Then slide sensor out of adapter.
(4) Inspect speed sensor mounting area in sensor
adapter. If transmission fluid is found in this area,
oil seal in metal speedometer adapter is leaking and
will have to be replaced.
(5) Remove speedometer adapter clamp bolt and
remove clamp (Fig. 26).
(6) Remove speedometer adapter, sensor adapter
and speedometer pinion as assembly.
Fig. 24 Speedometer Components (With Unit Style Sensor)
21 - 110 30RH/32RH IN-VEHICLE SERVICEJ

SPEEDOMETER COMPONENT INSTALLATION
AND INDEXING (TWO-PIECE SENSOR)
(1) Replace speedometer O-ring if cut, torn, or
worn.
(2) If oil seal in metal speedometer adapter needs
replacement, remove old seal with pointed tool. Then
install new seal with Special Tool C-4004. Push seal
into place with tool until tool bottoms (Fig. 27).
(3) Clean speedometer adapter mounting surface of
transmission, or transfer case thoroughly.
(4) Lubricate adapter seals with transmission
fluid.
(5) Count number of teeth on speedometer pinion.
Do this before installing pinion and adapter.(6) Note range numbers on face of speedometer
adapter (Fig. 27). These numbers correspond to num-
ber of teeth on speedometer pinion.
(7) Install pinion in adapter and install assembled
pinion and adapter in transmission or transfer case.
(8) Rotate speedometer adapter until required
range numbers are at 6 o'clock position (Fig. 28).
Verify that range numbers correspond to num-
ber of teeth on pinion.
(9) Push speedometer adapter into place until
seated.
(10) Install speedometer adapter clamp and bolt.
Tighten bolt to 11 Nzm (100 in. lbs.) torque.
(11) Install sensor adapter on speedometer
adapter. Tighten sensor adapter coupling nut to 17
Nzm (150 in. lbs.) torque.
(12) Carefully align and insert vehicle speed sensor
into sensor adapter.
(13) Install bolt that attaches speed sensor to
adapter. Tighten bolt to 5-8 Nzm (48-72 in. lbs.)
(14) Connect wires to speed sensor.
(15) Lower vehicle.
(16) Check top off transmission fluid level if neces-
sary.
TRANSMISSION COOLER LINE AND FITTING
SERVICE
The transmission cooler lines are attached with
quick connect fittings. Two types of fitting will be
used.
Fig. 25 Location Of Index Numbers On Speedometer
Adapter (Unit Style Sensor)
Fig. 26 Speedometer Components (With Two-Piece
Sensor)
Fig. 27 Installing Speedometer Adapter Seal (With
Two-Piece Sensor And Metal Adapter)
Fig. 28 Indexing Speedometer Adapter (With
Two-Piece Sensor)
J30RH/32RH IN-VEHICLE SERVICE 21 - 111

Replace the low-reverse drum if the clutch race,
roller surface or inside diameter is scored, worn or
damaged.Do not remove the clutch race from
the low-reverse drum under any circumstances.
Replace the drum and race as an assembly if ei-
ther component is damaged.
Examine the rear support carefully for wear,
cracks, scoring or other damage. Be sure the support
hub is a snug fit in the case and drum. Replace the
support if worn or damaged.
ASSEMBLING OVERRUNNING CLUTCH/LOW-
REVERSE DRUM
(1) Assemble clutch rollers and springs in retainer
if necessary (Fig. 31).
(2) Install overrunning clutch roller, spring and re-
tainer assembly in clutch cam (Fig. 32).
(3) Temporarily assemble and check overrunning
clutch operation as follows:
(a) Assemble cam and clutch.(b) Install clutch assembly on low-reverse drum
with twisting motion (Fig. 33).
(c) Install drum-clutch assembly in case and in-
stall clutch cam bolts.
(d) Install rear support and support attaching
bolts.
(e) Check low-reverse drum rotation.Drum
should rotate freely in clockwise direction
and lock when turned in counterclockwise di-
rection (as viewed from front of case).
(4) Note component position for assembly refer-
ence. Bolt holes in clutch cam are countersunk on
one side, Be sure this side of cam will face rearward
when installed (Fig. 34).
Fig. 30 Removing Overrunning Clutch From
Low-Reverse Drum
Fig. 31 Overrunning Clutch Rollers, Springs,
Retainer
Fig. 32 Assembling Overrunning Clutch And Cam
Fig. 33 Temporary Assembly Of Clutch And Drum
To Check Operation
21 - 126 30RH/32RH TRANSMISSION OVERHAULJ