Mitsubishi Montero (1991+). Manual - part 294

TRANSMISSION SERVICING - A/T 



1991 Mitsubishi Montero

         1991 TRANSMISSION SERVICING

         Automatic Transmission

         Mitsubishi:  Eclipse, Galant, Mirage,

           Montero, Pickup, Precis, 3000GT

         IDENTIFICATION

MITSUBISHI AUTOMATIC TRANSMISSION APPLICATIONS

Model                                    Transmission/Transaxle

Eclipse

 1.8 & 2.0L  ...........................  Model F4A22 Transaxle

 2.0L Turbo  ...........................  Model F4A33 Transaxle

 All-Wheel Drive (AWD)  ................  Model W4A33 Transaxle

Galant

 AWD  ..................................  Model W4A32 Transaxle

 DOHC  .................................  Model F4A22 Transaxle

 SOHC  ........................  Model KM175 or F4A22 Transaxle

Mirage

 1.5L  .................................  Model F3A21 Transaxle

 1.6L  .................................  Model F4A21 Transaxle

Montero  ............................  Model V4AW2 Transmission

Pickup  .............................  Model R4AC1 Transmission

Precis  ................................  Model KM176 Transaxle

3000GT  ................................  Model F4A33 Transaxle

         LUBRICATION

         TRANSAXLE/TRANSMISSION SERVICE INTERVALS

         Check fluid level every 12 months or 15,000 miles. Change

fluid and filter every 30,000 miles. If vehicle is operated under

severe condition, change fluid more often. If severe darkening of

fluid and strong odor are noted, bands should also be adjusted (if

equipped).

         TRANSFER CASE SERVICE INTERVALS

         On 4WD and AWD models, change transfer case fluid every 30,

000 miles.

         CHECKING FLUID LEVEL

         TRANSAXLE/TRANSMISSION

         1) Park vehicle on level area. Ensure oil is at normal

operating temperature, parking brake is engaged, and engine is at

idle. Move gear selector through each position, stopping briefly in

each position.

         2) Place gear selector in Neutral, and clean area around

dipstick tube. Ensure fluid level is between lower and upper marks,

but never over upper mark, in HOT range. Add or drain fluid if

necessary.

CAUTION:  If severe darkening of fluid and strong odor are noted,

          change fluid and filter, and adjust bands.

         TRANSFER CASE (3000GT)

         Lubricant level should be approximately .5" (13 mm) below

fill hole on side of transfer case.

         TRANSFER CASE (ALL OTHERS)

         Lubricant level should be to bottom of fill hole on side of

transfer case.

         RECOMMENDED FLUID

         TRANSAXLE/TRANSMISSION

         Use Chrysler Plus/Mitsubishi Plus ATF, Dexron and Dexron-II

ATF.

         TRANSFER CASES

         Use SAE 75W-85 gear oil with API GL-4 rating or higher.

         FLUID CAPACITY

TRANSAXLE/TRANSMISSION REFILL CAPACITIES

                                Refill                        Dry Fill

Application                     Qts. (L)                      Qts. (L)

Mirage  .....................  4.8 (4.5)  ...............  13.0 (12.2)

Eclipse

  F4A22  ....................  4.2 (4.0)  .................  6.4 (6.1)

  F4A33 & W4A33  ............  6.4 (6.1)  .................  8.0 (7.6)

Galant

  2WD  ......................  4.8 (4.5)  .................  6.4 (6.1)

  AWD  ......................  4.8 (4.5)  .................  6.9 (6.5)

Montero  ....................  5.8 (5.5)  .................  7.4 (7.0)

Pickup  ...................  2.0 (1.9)(1)  ...............  10.2 (9.7)

Precis  .....................  4.8 (4.5)  .................  6.4 (6.1)

3000GT  .....................  4.8 (4.5)  .................  7.9 (7.5)

(1) - Idle engine in Neutral, then add fluid to bring level between

      notches at "H" mark.

TRANSFER CASE REFILL CAPACITIES

Application                                      Pts. (L)

Eclipse & Galant  ............................  1.3 (0.6)

Mirage  ............................................  N/A

Montero & Pickup  ............................  4.6 (2.2)

3000GT  ........................................  .6 (.3)

         DRAINING & REFILLING

NOTE:    Although manufacturer recommends changing only fluid, the

         oil filter/screen may also require replacement. If replacing

         oil filter/screen, note length and location of all bolts.

         TRANSAXLE (EXCEPT MONTERO, PICKUP & RAM-50)

         1) Remove drain plug(s), and drain fluid. See  Fig. 1. Some

applications may contain a drain plug located in housing below drive

axle shaft, in oil pan. Remove oil pan. Remove oil filter/screen if

necessary.

         2) If oil filter/screen is replaced, tighten bolts to

specification. See TORQUE SPECIFICATIONS table at end of article.

Clean oil pan, replace gasket, and install oil pan. Tighten oil pan

bolts and drain plug to specification. See TORQUE SPECIFICATIONS

table. Ensure dipstick hole area is clean, and pour approximately 4.2

qts. (4.0L) of Dexron-II fluid into dipstick hole.

         3) Operate engine at idle for 2 minutes. Shift transaxle to

each position, ending in Neutral. Add sufficient fluid to reach lower

mark. After reaching normal operating temperature, fluid should be

between upper and lower marks of HOT range on dipstick.

Fig. 1:  Locating Drain Plugs

Courtesy of Mitsubishi Motor Sales of America.

         TRANSMISSION (MONTERO & PICKUP)

         1) Remove drain plug (if equipped) from transmission pan, and

allow fluid to drain. On models without drain plug, remove oil pan

must to drain fluid. Remove oil filter/screen if necessary.

         2) If oil filter/screen is replaced, tighten bolts to

specification. See TORQUE SPECIFICATIONS table at end of article.

Clean oil pan, replace gasket, and install oil pan. Tighten oil pan

bolts and drain plug to specification. See TORQUE SPECIFICATIONS

table. Fill transmission, through filler tube, with 5.3 qts. (5.0L) of

Dexron-II ATF on Montero, or 2.0 qts. (1.9L) on all others. Start

engine, and allow to idle for 2 minutes.

         3) Shift transmission into each position, ending in Neutral.

Check fluid level with engine running at idle, and add sufficient

fluid to bring level to lower mark of dipstick if necessary. Recheck

fluid level after transmission is at normal operating temperature.

         TRANSFER CASE

         Drain plug is located on bottom of transfer case. Change

drain plug gasket whenever fluid is changed. On 3000GT, lubricant

level should be approximately .5" (13 mm) below fill hole on side of

transfer case. On all others models, lubricant level should be to

bottom of fill hole on side of transfer case.

         HYDRAULIC CONTROL PRESSURE ADJUSTMENTS

         LINE PRESSURE CHECK (EXCEPT MONTERO & PICKUP)

         1) Set parking brake. Place shift lever in Neutral position.

Attach engine tachometer. Remove line pressure port plug located above

front transaxle shaft, forward of governor pressure port plug. On

Precis, line pressure port is located below bell housing, at front of

transaxle oil pan. Using appropriate adapter, attach pressure gauge.

         2) Start engine, and bring to operating temperature. With

gear selector in Drive position, bring engine speed to 2500 RPM. Pull

throttle control cable (if equipped) wide open at transaxle side.

         3) Line pressure should be 98-100 psi (6.9-7.0 kg/cm



) on

Mirage, or 124-127 psi (8.7-8.9 kg/cm



) on all others. If line

pressure is not to specification, proceed to LINE PRESSURE ADJUSTMENT.

         LINE PRESSURE ADJUSTMENT (EXCEPT MONTERO & PICKUP)

         1) Drain transaxle fluid. Remove oil pan. Disconnect throttle

control cable from throttle cam. Remove oil temperature sensor (if

equipped). Disconnect solenoid connector. On some models, it may be

necessary to push solenoid wire harness connector and grommet into

transaxle case.

         2) Remove oil filter screen and plate. Noting location and

length of bolts, remove valve body. DO NOT drop internal parts. Adjust

line pressure by turning regulator valve adjusting screw.

         3) Turn adjusting screw counterclockwise to increase pressure

or clockwise to decrease pressure. One complete turn of adjusting

screw changes line pressure as follows.

      *  3.7 psi (.26 kg/cm



) on Mirage with F3A21 Transaxle

      *  5.4 psi (.39 kg/cm



) on Precis

      *  54 psi (3.8 kg/cm



) on all others

         4) After adjustment, reverse removal procedure to install.

Refill transaxle.

         LINE PRESSURE (MONTERO)

         1) Remove plug from line pressure take-off port located

behind transmission shift control lever. Install Hydraulic Pressure

Meter (MD998330) with Adapter (MD998206).

         2) Place vehicle on dynamometer. Apply parking brake and

start engine. With brake applied, place transmission in Drive. Note

pressure at idle. Pressure should be 74-85 psi (5.2-6.0 kg/cm



).

         3) Raise engine RPM to stall speed (2100-2400 RPM). Note line

pressure. Pressure should be 156-185 psi (11.0-13.0 kg/cm



).

         4) Shift transmission into Reverse with brake applied. At

idle, pressure should be 112-130 psi (7.9-9.1 kg/cm



). Raise engine

RPM to stall speed (2100-2400 RPM). Note line pressure. Pressure

should be 227-285 psi (16.0-20.0 kg/cm



). If readings are not to