1993 Jeep Cherokee

TRANSMISSION SERVICING

Chrysler Corp. Automatic Transmission

Jeep; Cherokee, Grand Cherokee, Grand Wagoneer, Wrangler IDENTIFICATION

JEEP AUTOMATIC TRANSMISSION APPLICATIONS TABLE

Model Transmission

Except Wrangler Aisin Warner AW-4

Wrangler Chrysler 32RH (Formerly A-999)

LUBRICATION

SERVICE INTERVALS

Transmission

Check fluid level and condition of fluid at 7500 mile intervals. Change fluid, replace filter and adjust bands at 30,000 miles or 30 month intervals.

Transfer Case

Check transfer case fluid every 7500 miles and replace fluid every 30,000 miles or 30 month intervals.

CHECKING FLUID LEVEL

Transmission

Park vehicle on a level surface and apply parking brake. With engine idling at normal operating temperature, move transmission selector lever through all gears, ending in Neutral (Park for AW-4 transmission). Check fluid level. Fluid level should be between FULL and ADD mark on dipstick. Add fluid as needed. DO NOT overfill.

Transfer Case

Remove fill plug. Check oil level. If level is not up to bottom of fill plug opening, add lubricant.

RECOMMENDED FLUID

Transmission

Aisin Warner AW-4 transmissions and transfer cases use Mercon type ATF. Chrysler 32RH transmissions use Dexron-II type ATF.

Transfer Case

Transfer cases use same fluid as attached transmission.

FLUID CAPACITY

NOTE: Transmission and converter capacities are approximate.

Always determine fluid level by reading on dipstick, rather than amount of fluid added. See appropriate REFILL CAPACITIES table.

TRANSMISSION REFILL CAPACITIES TABLE

Application Qts. (L)

AW-4 8.5 (8.0)

32RH 8.0 (7.6)

TRANSFER CASE REFILL CAPACITIES TABLE

Application Pts. (L)

Model 231 3.3 (1.5)

Model 242 3.0 (1.4)

Model 249 3.0 (1.4)

DRAINING & REFILLING

Transmission

2. Position large drain pan under transmission. Loosen oil
   pan bolts, tap pan to break it loose and allow fluid to drain. Remove
   pan and oil filter. Install NEW filter on bottom of valve body and
   tighten retaining screws to 35 INCH lbs. (4 N.m). Clean oil pan and
   install with NEW gasket. Tighten bolts to 150 INCH lbs. (17 N.m).

3. Refill transmission with approximately 5 qts. (4.7L) of
   ATF. Start engine and allow to run at curb idle. With vehicle on level
   surface, engine idling and parking brake applied, move shift selector
   lever through all gear ranges, ending in Neutral (Park for AW-4
   transmission).

4. Recheck fluid level when transmission reaches normal
   operating temperature. Add fluid to FULL mark on dipstick.

Transfer Case

Remove drain plug from transfer case. Remove fill plug for easier draining. With fluid fully drained, reinstall drain plug. Fill transfer case and install fill plug. Tighten drain plug and fill plug to 20 ft. lbs. (27 N.m).

ADJUSTMENTS

NOTE: Bands on the AW-4 transmission are not adjustable. If slippage occurs, bands must be replaced.

KICKDOWN (FRONT) BAND

32RH

1) Locate kickdown band adjusting screw on left side of case
(near throttle lever shaft). See Fig. 1. Loosen adjusting screw lock

nut and back off 4-5 turns. Ensure adjusting screw turns freely in case.

2) Tighten adjusting screw to 72 INCH lbs. (8 N.m). If
Adapter Extension (J-24063) is used, tighten adjusting screw to 50
INCH lbs. (5 N.m). Back off adjusting screw 2 1/2 turns. Hold
adjusting screw and tighten lock nut to 30 ft. lbs. (41 N.m).

From Cooler

Fig. 2: Adjusting Low-Reverse (Rear) Band (Typical) Courtesy of Chrysler Corp.

THROTTLE CABLE

With ignition off, fully retract cable plunger. Press cable button down and push cable plunger inward. Rotate throttle lever to wide open throttle position. Cable will ratchet to correct position. Release throttle lever. Cable is now adjusted.

SHIFT LINKAGE

AW-4

2. Place gearshift lever in Park and raise vehicle. Using a
   small screwdriver, unlock shift control cable by releasing "U" shaped
   cable adjuster clamp. Remove cable from mounting bracket.

3. Move transmission shift lever rearward until fully seated
   into Park detent. Ensure that drive shaft cannot be rotated. Snap
   control cable into cable mounting bracket and replace "U" shaped cable
   adjuster clamp. Lower vehicle and verify engine starting. Engine
   should start only with shifter in Park or Neutral.

32RH

2. Loosen shift rod trunnion jam nuts at transmission lever.
   Remove shift rod-to-bellcrank lock pin. Disengage trunnion and shift
   rod. Place selector lever in Park and lock steering column. Move
   transmission shift lever to full rear Park position.

3. Adjust shift rod trunnion to obtain free pin fit in
   bellcrank arm. Tighten jam nuts. On vehicles with shift lever on

column, ensure linkage lash is eliminated by pulling down on shift rod and pushing up on outer bellcrank when tightening jam nuts.

3) Check steering column lock for ease of operation. Ensure engine starts in Neutral or Park only. If starter engages in any drive gear, or does not work in Neutral or Park, check for proper shift linkage adjustment or faulty neutral safety switch.

PARKING LOCK CABLE

AW-4

2. Shift transmission to Park. Turn ignition switch to lock
   position. Remove center console bezel to access cable adjustment.

3. Pull cable lock button up to release cable. See Fig. 3.
   Pull cable forward and release. Press lock button down until it snaps
   in place.

90B04353

Fig. 3: Adjusting Shift Cable Courtesy of Chrysler Corp.

2. Verify adjustment by trying to move shifter. Shifter
   button and/or shifter should not move.

3. Turn ignition on. Move shifter to Neutral. If ignition
   switch cannot be turned to Lock position, cable is adjusted. Repeat
   this step with shifter in Drive.

NEUTRAL SAFETY SWITCH

AW-4

2. With transmission linkage properly adjusted, switch allows
   starter operation in Park or Neutral only.

3. To test switch, remove wire connector. Using ohmmeter,
   ensure continuity exists between proper terminals with transmission at
   specified gear range. See Fig. 4. Replace switch if faulty.

4. To replace switch, disconnect wire connector. Bend switch
   washer lock tabs upward and remove switch retaining nut and adjusting
   bolt. Remove switch assembly.

   
   

   TESTING SWITCH

5. To install, disconnect shift linkage from transmission
   shift lever. Rotate shift lever all the way rearward and then forward
   2 detent positions. This is the Neutral position. Install switch
   assembly.

6. Install adjusting bolt finger tight only. Install lock
   washer and retaining nut. Tighten nut to 61 INCH lbs. (7 N.m). Rotate
   switch to align standard line with groove of manual valve shaft. See
   Fig. 4. Tighten adjusting bolt to 108 INCH lbs. (13 N.m). Bend over
   lock tabs and install remaining components.

Fig. 4: Testing & Adjusting Neutral Safety Switch Courtesy of Chrysler Corp.

32RH

1) With transmission linkage properly adjusted, switch should

allow starter operation in Park or Neutral only.

2. To test switch, remove wire harness and test for
   continuity between center pin of switch and transmission case.
   Continuity should only exist when transmission is in Park or Neutral.

3. Shift transmission into Reverse. Check for continuity
   between 2 outer switch terminals. Continuity should exist with
   transmission in Reverse only. With transmission in Reverse, check
   continuity between each outer switch terminal and transmission case.
   No continuity should exist between terminals and transmission case.

4. To replace switch, disconnect wire connector and unscrew
   switch from case. Move selector lever to Park and Neutral positions
   and ensure switch operating fingers are centered in switch opening.

5. Install switch and NEW seal in case. Tighten switch to 24
   ft. lbs. (33 N.m). Check fluid level and add as needed.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS TABLE

Application Ft. Lbs. (N.m)

Kickdown (Front) Band Lock Nut 30 (41)

Low-Reverse (Rear) Band Lock Nut 25 (34)

Neutral Safety Switch (32RH) 25 (34)

Oil Pan Bolts 13 (18)

Transfer Case Fill Plug 20 (27)

INCH Lbs. (N.m)

Filter

AW-4 84 (10)

32RH 35 (4)

Kickdown (Front) Band (1) 72 (8)

Low-Reverse (Rear) Band 72 (8)

Neutral Safety Switch (AW-4)

Retaining Nut 61 (7)

Adjusting Bolt 108 (13)

(1) - If adapter extension is used, tighten to 50 INCH lbs. (5 N.m). See text for complete adjusting procedure.