Mitsubishi Montero (1998+). Manual - part 93

 

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Mitsubishi Montero (1998+). Manual - part 93

 

 

DIFFERENTIAL & AXLE SHAFTS REAR 

1998 Mitsubishi Montero

         1997-98 DRIVE AXLES

         Mitsubishi Differentials & Axle Shafts - Rear Non-Integral

         Montero, Montero Sport

         DESCRIPTION

         Rear axle features a rigid banjo-type housing with semi-

floating axle shafts. Differential consists of hypoid reduction gears

and straight bevel differential gears. Limited Slip Differential (LSD)

is available on some models. Locking rear differential is available on

1997-98 Montero and 1998 Montero Sport. See DIFFERENTIAL LOCK - REAR

article.

         AXLE RATIO & IDENTIFICATION

         Ratio is determined by dividing number of ring gear teeth by

number of drive pinion teeth.

AXLE RATIO SPECIFICATIONS



Application                                                      Ratio

Montero  .....................................................  4.27:1

Montero Sport

  With Wide Fender

    2WD  .....................................................  4.22:1

    4WD  .....................................................  4.27:1

  Without Wide Fender  .......................................  4.64:1



         LUBRICATION

         CAPACITY

REAR AXLE GEAR OIL CAPACITY



Application                                                   Pts. (L)

Montero  ..................................................  6.8 (3.2)

Montero Sport

  Conventional & Locking  .................................  3.2 (1.5)

  Limited Slip  ...........................................  5.5 (2.6)



         FLUID TYPE

         Conventional differentials use SAE 80W or SAE 90W API GL-5.

Limited slip differentials use Mitsubishi Gear Oil (8149630 EX), or

Mopar Gear Oil (4318058) and Mopar Friction Modifier (4318060).

         TROUBLE SHOOTING

NOTE:    See TROUBLE SHOOTING - BASIC PROCEDURES article in the

         GENERAL TROUBLE SHOOTING section.

         TESTING & INSPECTION

         AXLE SHAFT END PLAY

         Montero & Montero Sport

         Using dial indicator, check axle shaft end play. End play

should be .010" (.25 mm). If end play is not within specification,

replace axle bearing. See AXLE SHAFT OVERHAUL under OVERHAUL.

         AXLE TOTAL BACKLASH

         1) Raise and support rear axle. Place transmission in

Neutral. Apply parking brake. Rotate drive shaft clockwise. Place

reference marks on pinion dust cover and differential housing.

         2) Rotate drive shaft counterclockwise, and measure distance

between reference marks. Differential must be removed and backlash

adjusted if distance exceeds 0.2" (5 mm). See RING GEAR BACK-LASH

procedure under DIFFERENTIAL ASSEMBLY (LIMITED SLIP) under OVERHAUL.

         LIMITED SLIP DIFFERENTIAL PRELOAD

         1) Place transmission in Neutral. Block front wheels. Raise

one rear wheel off ground and remove wheel. Release parking brake.

         2) Using torque wrench and axle puller adapter, measure

starting torque while rotating wheel in forward direction. See  Fig. 1.

Differential must be repaired if torque is less than 18 ft. lbs. (25

N.m).

Fig. 1:  Testing Limited Slip Differential Preload

Courtesy of Mitsubishi Motor Sales of America.

         LOCKING DIFFERENTIAL (MONTERO)

         Air Pump

         Connect air pressure gauge in-line to air hose from air pump.

Air pump is located in right storage area, under rear seat. Connect

battery voltage to air pump (positive lead to Red wire). The air pump

is operating correctly when the following sequences occur;

      *  Pump should operate for no more than 5 seconds.

      *  Pressure should be 4-6 psi (.28-.41 kg/cm



) within 10-20

         seconds after pump has stopped.

      *  After air pump has stopped operating, it should not restart

         operating for 5 minutes.

         Center Differential Lock Operation Switch

         See ANTI-LOCK BRAKE SYSTEM article in BRAKES.

         Differential Lock Switch

         Remove switch from center console. To test switch operation,

see Fig. 2. Replace switch as needed.

         Differential Lock Control Unit

         See ANTI-LOCK BRAKE SYSTEM article in BRAKES.

         Lock Detection Switch

         1) Raise and support vehicle. Disconnect air hose connection

near rear differential. Connect air source with pressure regulator and

pressure gauge. Apply 4 psi (.28 kg/cm



) pressure. Disconnect lock

detection switch harness connector.

         2) Using ohmmeter, check if continuity exists with air

pressure applied. Continuity should exist with air pressure applied.

If continuity exists, ensure axle is locked by attempting to turn rear

wheels separately of each other.

         3) If continuity does not exist, go to step 4). If continuity

does exist but axles are not locked, see CARRIER ASSEMBLY under

REMOVAL & INSTALLATION and inspect locking assembly.

         4) Remove detection switch from housing. Using ohmmeter,

check continuity of switch. Continuity should exist with switch

plunger extended. With plunger in neutral position, continuity should

not exist. Replace switch as needed.

Fig. 2:  Checking Differential Lock Switch Continuity

Courtesy of Mitsubishi Motor Sales of America.

         REMOVAL & INSTALLATION

         AXLE SHAFT R & I

         Removal (Montero & Montero Sport)

         Block front wheels. Raise and support rear axle housing.

Remove brake caliper and rotor. See Fig. 3. Remove parking brake cable

attaching bolts. Remove connection for parking brake cable end from

rear brake assembly. Remove ABS speed sensor (if equipped). Unbolt

backing plate with bearing housing from rear axle housing. Using

Puller (MB990241) and Slide Hammer (MB990211), remove axle assembly.

DO NOT damage oil seal. Remove "O" ring. Replace if necessary.

         Installation

         Install NEW oil seal in axle housing as needed. To install

axle assembly, reverse removal procedure.

Fig. 3:  Exploded View Of Typical Axle Shaft

Courtesy of Mitsubishi Motor Sales of America.

         Installation

         1) Insert new "O" ring and shim of .04" (1.0 mm) thickness

 

 

 

 

 

 

 

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