Mitsubishi Montero (1991+). Manual - part 310

 

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Mitsubishi Montero (1991+). Manual - part 310

 

 

axle backlash. If backlash is one inch or less, drive axle is not the

source of clunk noise.

         Bearing Whine

         Bearing whine is a high-pitched sound similar to a whistle.

It is usually caused by malfunctioning pinion bearings. Pinion

bearings operate at drive shaft speed. Roller wheel bearings may whine

in a similar manner if they run completely dry of lubricant. Bearing

noise will occur at all driving speeds. This distinguishes it from

gear whine, which usually comes and goes as speed changes.

         Bearing Rumble

         Bearing rumble sounds like marbles being tumbled. It is

usually caused by a malfunctioning wheel bearing. The lower pitch is

because the wheel bearing turns at only about 1/3 of drive shaft

speed.

         Chatter On Turns

         This is a condition where the entire front or rear of vehicle

vibrates when vehicle is moving. The vibration is plainly felt as well

as heard. Extra differential thrust washers installed during axle

repair can cause a condition of partial lock-up that creates this

chatter.

         Axle Shaft Noise

         Axle shaft noise is similar to gear noise and pinion bearing

whine. Axle shaft bearing noise will normally distinguish itself from

gear noise by occurring in all driving modes (Drive, cruise, coast and

float), and will persist with transmission in Neutral while vehicle is

moving at problem speed.

         If vehicle displays this noise condition, remove suspect

axle shafts, replace wheel seals and install a new set of bearings.

Re-evaluate vehicle for noise before removing any internal components.

         Vibration

         Vibration is a high-frequency trembling, shaking or grinding

condition (felt or heard) that may be constant or variable in level

and can occur during the total operating speed range of the vehicle.

         The types of vibrations that can be felt in the vehicle can

be divided into 3 main groups:

      *  Vibrations of various unbalanced rotating parts of the

         vehicle.

      *  Resonance vibrations of the body and frame structures caused

         by rotating of unbalanced parts.

      *  Tip-in moans of resonance vibrations from stressed engine or

         exhaust system mounts or driveline flexing modes.

         DRIVE AXLE - RWD TROUBLE SHOOTING

NOTE:    This is GENERAL information.  This article is not intended

         to be specific to any unique situation or individual vehicle

         configuration.  The purpose of this Trouble Shooting

         information is to provide a list of common causes to

         problem symptoms.  For model-specific Trouble Shooting,

         refer to SUBJECT, DIAGNOSTIC, or TESTING articles available

         in the section(s) you are accessing. For definitions

         of listed noises or sounds, see DRIVE AXLE - NOISE DIAGNOSIS

         under POWERTRAIN.

DRIVE AXLE (RWD) TROUBLE SHOOTING



CONDITION         POSSIBLE CAUSE               CORRECTION



Knocking or Clunking

                  Differential Side Gear

                  Clearance                    Check Clearance

                  Worn Pinion Shaft            Replace Pinion Shaft

                  Axle Shaft End Play          Check End Play

                  Missing Gear Teeth           Check Differential/

                                               Replace Gear

                  Wrong Axle Backlash          Check Backlash

                  Misaligned Driveline         Realign Driveline



Clinking During Engagement

                  Side Gear Clearance          Check Clearance

                  Ring and Pinion Backlash     Check Backlash

                  Worn/Loose Pinion Shaft      Replace Shaft/Bearing

                  Bad "U" Joint                Replace "U" Joint

                  Sticking Slip Yoke           Lube Slip Yoke

                  Broken Rear Axle Mount       Replace Mount

                  Loose Drive Shaft Flange     Check Flange



Click/Chatter On Turns

                  Differential Side Gear

                  Clearance                    Check Clearance

                  Wrong Turn On Plates (1)     Replace Clutch Plates

                  Wrong Differential

                  Lubricant (1)                Change Lubricant



Knock Or Click    Flat Spot on Rear

                  Wheel Bearing                Replace Wheel Bearing



Low Vibration At All Speeds

                  Faulty Wheel Bearing         Replace Wheel Bearing

                  Faulty "U" Joint             Replace "U" Joint

                  Faulty Drive Shaft           Balance Drive Shaft

                  Faulty Companion Flange      Replace Flange

                  Faulty Slip Yoke Flange      Replace Flange

(1) - Limited slip differential only.



         FWD AXLE SHAFTS & CV JOINTS TROUBLE SHOOTING

NOTE:    This is GENERAL information.  This article is not intended

         to be specific to any unique situation or individual vehicle

         configuration.  The purpose of this Trouble Shooting

         information is to provide a list of common causes to

         problem symptoms.  For model-specific Trouble Shooting,

         refer to SUBJECT, DIAGNOSTIC, or TESTING articles available

         in the section(s) you are accessing.

BASIC FWD AXLE SHAFTS & CV JOINTS TROUBLE SHOOTING CHART



CONDITION                          POSSIBLE CAUSE



Grease Leaks                       CV boot torn or cracked



Clicking Noise on Cornering        Damaged outer CV



Clunk Noise on Acceleration        Damaged inner CV



Vibration or Shudder               Sticking, damaged or worn CV

 on Acceleration                   Misalignment or spring height



         STEERING & SUSPENSION

         MANUAL STEERING GEAR TROUBLE SHOOTING

NOTE:    This is GENERAL information.  This article is not intended

         to be specific to any unique situation or individual vehicle

         configuration.  The purpose of this Trouble Shooting

         information is to provide a list of common causes to

         problem symptoms.  For model-specific Trouble Shooting,

         refer to SUBJECT, DIAGNOSTIC, or TESTING articles available

         in the section(s) you are accessing.

BASIC MANUAL STEERING GEAR TROUBLE SHOOTING CHART



CONDITION         POSSIBLE CAUSE                CORRECTION



Rattle or         Rack and pinion mounting      Tighten all mounting

Chucking Noise    bracket loose                 bolts

in Rack and

Pinion            Lack of/or incorrect          Correct as necessary

                  lubricant

                  Steering gear mounting        Tighten all mounting

                  bolts loose                   bolts



Excessive Play    Front wheel bearing           See FRONT SUSPENSION

                  improperly adjusted           article

                  Loose or worn steering        See STEERING LINKAGE

                  linkage                       article

                  Loose or worn steering        See MANUAL STEERING

                  gear shift                    GEAR article

                  Steering arm loose on         See MANUAL STEERING

                  gear shaft                    GEAR article

                  Steering gear housing         Tighten all mounting

                  bolts loose                   bolts

                  Steering gear adjustment      See MANUAL STEERING

                  too loose                     GEAR article

                  Steering arms loose on        Tighten and check

                  knuckles                      steering linkage

                  Rack and pinion mounting      Tighten all mounting

                  loose                         bolts

                  Rack and pinion out of        See adjustment in

                  adjustment                    STEERING article

                  Tie rod end loose             Tighten and check

                                                steering linkage

                  Excessive Pitman shaft-to-    Repair as necessary

                  ball nut lash



Poor              Lack of lubricant in ball     Lubricate and service

Returnability     joint or linkage              systems

                  Binding in linkage or ball    See STEERING LINKAGE

                  joints                        and SUSPENSION article

                  Improper front end alignment  See WHEEL ALIGNMENT

                                                article

                  Improper tire pressure        Inflate to proper

                                                pressure

                  Tie rod binding               Inflate to proper

                                                pressure

                  Shaft seal rubbing shaft      See STEERING COLUMN

                                                article



Excessive         Improper tire pressure        Inflate to proper

Vertical Motion                                 pressure

                  Tires, wheels or rotors       Balance tires then

                  out of balance                check wheels and

                                                rotors

                  Worn or faulty shock          Check and replace if

                  absorbers                     necessary

                  Loose tie rod ends or         Tighten or replace if

                  steering                      necessary

                  Loose or worn wheel           See SUSPENSION article

                  bearings



Steering Pulls    Improper tire pressure        Inflate to proper

to One Side                                     pressure

                  Front tires are different     Rotate or replace if

                  sizes                         necessary

                  Wheel bearings not            See FRONT SUSPENSION

                                                article

                  adjusted properly

                  Bent or broken suspension     See FRONT SUSPENSION

                  components                    article

                  Improper wheel alignment      See WHEEL ALIGNMENT

                                                article

 

 

 

 

 

 

 

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