clock JEEP CHEROKEE 1994 Service Manual PDF

mm (1.976 in.). Inside diameter is 28.9 mm (1.138 in.).
(16) Install clutch on planetary gear.
(17) Verify one-way clutch operation. Hold drum
and turn planetary shaft clockwise and counterclock-wise. Shaft should turn clockwise freely but lock
when turned counterclockwise.
OVERDRIVE SUPPORT OVERHAUL
SUPPORT DISASSEMBLY
(1) Check brake piston operation. Mount support
on clutch (Fig. 2).
(2) Apply compressed air through support feed hole
and observe brake piston movement (Fig. 2). Piston
Fig. 1 Overdrive Support Components
Fig. 26 Installing Retainer And Snap Ring
Fig. 27 Installing Clutch Drum Bearing And Race
Assembly
21 - 216 AW-4 TRANSMISSION OVERHAULJ

(4) Turn planetary over and install race thrust
race (Fig. 3).
(5) Install front race and bearing and forward race
in ring gear (Fig. 4).
(6) Set planetary gear assembly aside for final as-
sembly.
SUN GEAR AND NO. 1 ONE-WAY CLUTCH
OVERHAUL
SUN GEAR AND CLUTCH DISASSEMBLY
(1) Hold sun gear and turn second brake hub
clockwise and counterclockwise (Fig. 2). Hub should
rotate freely clockwise but lock when turned counter-clockwise. Replace one-way clutch and hub if they do
not operate properly.
(2) Remove one-way clutch/second brake hub as-
sembly from drum (Fig. 3).
(3) Remove thrust washer from drum (Fig. 4).
(4) Remove two seal rings from sun gear (Fig. 5).
Fig. 1 Sun Gear And One-Way Clutch Components
Fig. 3 Installing Front Planetary Thrust Race
Fig. 4 Installing Front Planetary Front Bearing And
Races
JAW-4 TRANSMISSION OVERHAUL 21 - 229

(5) Support sun gear on wood block (Fig. 6). Then
remove first sun gear snap ring and separate drum
from gear.
(6) Remove remaining snap ring from sun gear
(Fig. 7).
(7) Measure inside diameter of sun gear bushings
with bore gauge or inside micrometer (Fig. 8). Maxi-
mum allowable diameter is 27.08 mm (1.0661 in.).
Replace sun gear if bushing inside diameter is
greater than specified.
SUN GEAR AND CLUTCH ASSEMBLY
(1) Install first snap ring on sun gear.
(2) Install sun gear in drum and install remaining
snap ring.(3) Coat replacement seal rings with petroleum
jelly and install them on sun gear.Be sure seal
ring ends are interlocked.
(4) Install thrust washer. Be sure washer tabs are
seated in drum slots.
(5) Install one-way clutch/second brake hub assem-
bly on sun gear. Deep side of hub flange faces up-
ward (Fig. 9).
(6) Check one-way clutch operation again (Fig. 2).
Hold sun gear and turn second brake hub clockwise
and counterclockwise. Hub should turn clockwise
freely, but lock when turned counterclockwise.
Fig. 2 Checking One-Way Clutch Operation
Fig. 3 Removing/Installing Brake Hub And Clutch
Assembly
Fig. 4 Removing/Installing Thrust Washer
Fig. 5 Removing/Installing Sun Gear Seal Rings
21 - 230 AW-4 TRANSMISSION OVERHAULJ

REAR PLANETARY, NO. 2 ONE-WAY CLUTCH AND
OUTPUT SHAFT OVERHAUL
PLANETARY/BRAKE PACK/OUTPUT SHAFT
DISASSEMBLY
(1) Remove output shaft from gear assembly (Fig.
2).
(2) Remove and discard shaft seal ring (Fig. 4).
(3) Remove brake pack from planetary gear (Fig.
4).
(4) Measure thickness of each brake pack disc.
Minimum thickness is 1.51 mm (0.0594 in.). Replace
all discs if any disc is thinner than specified.
(5) Remove planetary gear from ring gear (Fig. 5).
(6) Check No. 2 one-way clutch. Hold planetary
gear and turn clutch inner race in both directions.Race should turn freely counterclockwise, but lock
when turned clockwise. Replace one-way clutch if
necessary.
Fig. 1 Rear Planetary, Brake Pack, Clutch And Output Shaft Components
Fig. 2 Removing/Installing Output Shaft
21 - 234 AW-4 TRANSMISSION OVERHAULJ

ASSEMBLING REAR PLANETARY, BRAKE
PACK, CLUTCH AND SHAFT
(1) Install hub and snap ring in ring gear (Fig. 11)
(2) Identify ring gear thrust bearing and races by
following dimensions (Fig. 10):
²Outer diameter of bottom race is 44.8 mm (1.764
in.) and inner diameter is 27.6 mm (1.087 in.).
²Outer diameter of bearing is 44.7 mm (1.760 in.)
and inner diameter is 30.1 mm (1.185 in.).
²Outer diameter of upper race is 44.8 mm (1.764
in.) and inner diameter is 28.8 mm (1.134 in.).
(3) Lubricate ring gear thrust bearing and races
with petroleum jelly and install them in ring gear
(Fig. 10).
(4) Coat planetary thrust washers with petroleum
jelly and install them in gear (Fig. 9).
(5) Install No. 2 one-way clutch in planetary gear.
Be sure flanged side of clutch faces upward (Fig. 12).(6) Install clutch retaining snap ring and install
clutch inner race (Fig. 7). Turn race counterclockwise
to ease installation.
(7) Verify one-way clutch operation. Hold gear and
turn inner race in both directions. Race should turn
freely counterclockwise, but lock when turned clock-
wise.
(8) Install planetary gear in ring gear.
(9) Assemble clutch discs and clutch plates (Fig. 4).
Sequence is disc first, then a plate. Use seven discs
and plates in a 6-cyl. transmission.
Fig. 8 Removing.Installing One-Way Clutch
Fig. 9 Removing/Installing Rear Planetary Thrust
Washers
Fig. 10 Removing/Installing Ring Gear Thrust
Bearing And Races
21 - 236 AW-4 TRANSMISSION OVERHAULJ

(11) Adjust transfer case shift linkage.
(12) Lower vehicle.
TRANSFER CASE DISASSEMBLY AND OVERHAUL
Two versions of the NP231 are used in current
models. One version retains the synchronizer
components used in previous years. A newly intro-
duced version does not have synchro components.
The non-synchro version does not have a synchro
gear, struts, spring and stop ring. During over-
haul, note which version is being serviced and or-
der needed parts accordingly.
(1) Remove fill and drain plugs.
(2) Remove front yoke. Discard yoke seal washer
and nut. They should not be reused.
(3) Move transfer case range lever rearward to 4L
position.
(4) Remove extension housing attaching bolts.
(5) Tap extension housing in clockwise direction to
break sealer bead and remove housing (Fig. 1).
CAUTION: To avoid damaging the sealing surfaces
of the extension housing and rear retainer, do not
pry or wedge the housing off the retainer.
(6) Remove rear bearing snap ring (Fig. 2).
(7) Remove rear retainer attaching bolts.
(8) Remove rear retainer. Position screwdriver un-
der each tab on retainer housing (Fig. 3). Then care-
fully pry retainer upward and off rear case.
CAUTION: Do not pry against the sealing surfaces of
the retainer or rear case. The surfaces could be dam-
aged.
(9) Remove bolts attaching rear case to front case.
Retain bolts and washers.
(10) Separate rear case from front case (Fig. 4) Insert
screwdrivers into slots cast in case ends. Then gently
pry upward to break sealer bead and loosen rear case.
CAUTION: Do not pry against the sealing surfaces
of the retainer or rear case. The surfaces could be
damaged.
Fig. 1 Extension Housing Removal
Fig. 2 Rear Bearing Snap Ring Removal
Fig. 3 Rear Retainer Removal
Fig. 4 Loosening Rear Case
JNP231 TRANSFER CASE 21 - 277

TRANSFER CASE DISASSEMBLY AND OVERHAUL
(1) Remove fill and drain plugs.
(2) Remove front yoke. Discard yoke seal washer
and nut.
(3) Move range lever rearward to 4L position.
(4) Remove extension housing attaching bolts.
(5) Tap extension housing in a clockwise direction
to break sealer bead and remove housing (Fig. 6).
CAUTION: To avoid damaging the sealing surfaces of
the extension housing and rear retainer, do not at-
tempt to pry or wedge the housing off the retainer.
(6) Remove rear bearing snap ring from mainshaft
(Fig. 7). Discard snap ring.(7) Remove rear retainer attaching bolts.
(8) Loosen rear retainer (Fig. 8). Position long
screwdriver under each tab at ends of retainer hous-
ing and pry retainer upward.
CAUTION: Do not pry against the sealing surfaces
of the retainer or rear case. The surfaces could be
damaged.
(9) Lift rear retainer up and off case and main-
shaft (Fig. 9).
Fig. 7 Removing Rear Bearing Snap Ring
Fig. 6 Extension Housing Removal
Fig. 8 Loosening Rear Retainer
Fig. 9 Remove Rear retainer
JNP242 TRANSFER CASE 21 - 297

(23) Remove front output shaft (Fig. 18).
(24) Remove transfer case shift lever nut and lever.
(25) Remove shift detent plug, spring and pin (Fig.
19).(26) Remove seal plug from low range fork lockpin
access hole. Then move shift sector to align low range
fork lockpin with access hole (Fig. 20).
(27) Remove range fork lockpin with size number
one easy-out tool. Grip easy-out tool with locking pli-
ers and remove pin with counterclockwise, twist and
pull motion (Fig. 20).
(28) Remove shift rail by pulling it straight up and
out of fork (Fig. 21).
Fig. 18 Removing Front Output Shaft
Fig. 19 Removing Detent Components
Fig. 20 Removing Low Range Fork Lockpin
Fig. 21 Removing Shift Rail
21 - 300 NP242 TRANSFER CASEJ

INSTALLATION
(1) Position weatherstrip seal in the opening with
the left end of the seal at the opening centerline. In-
stall the seal in a clockwise direction.
(2) Move to the left and mate the seal with the
bottom-left flange (Fig. 122).
(3) Move upward and mate the seal with the left-
side flange.
(4) Move to the right and mate the seal with the
top-left roof flange.(5) Seat the installed part of the seal with a roller.
Move the roller from the left-bottom end of seal to
the top-left half of the seal.
(6) Move to the right and mate the seal with the
top-right roof flange.
(7) Move downward and mate the seal with the
right-side flange.
(8) Move to the left and mate the seal with the
bottom-right flange.
(9) Center and butt seal the ends together at the
centerline.
(10) Seat the remaining part of the seal with a
roller. Move the roller the from top-left half of the
seal to the right-bottom end of the seal.
Fig. 130 Liftgate Adjustment Shims
Fig. 131 Stop Bumper Screw Anchors
Fig. 132 Liftgate Opening Weatherstrip Seal
Removal/Installation
Fig. 133 Liftgate Opening Weatherstrip Seal
JBODY COMPONENTSÐXJ VEHICLES 23 - 71

(5) Insert the key and cylinder into the lock and
turn clockwise. Release the lock latch and remove
the key.
(6) Insert the assembled lock in the console cover
hole (Fig. 28) and install the retainer with the at-
taching screw.
CARPET/FLOOR MATS
SERVICE INFORMATION
FRONT FLOOR REAR CARPET
The front floor rear carpet (Fig. 30) is retained in
place by the:
²front seats,
²floor console,
²shoulder belt buckle anchors, and
²door sill carpets.To remove and then install a front floor rear carpet
(Fig. 30), it is necessary to remove and then install
the front seats and the floor console.
FRONT FLOOR FRONT CARPET
The front floor front carpet (Fig. 30) is retained in
place by the:
²transmission/transfer case shift lever boots (Fig.
31),
²rear carpet, and
²Velcro strips.
Fig. 28 Console Cover and Seal
Fig. 29 Console Cover Lock Removal/Installation
Fig. 30 Floor Carpets
Fig. 31 Shift Lever Boots
23 - 198 BODY COMPONENTSÐXJ VEHICLESJ