differential MITSUBISHI MONTERO 1998 User Guide

Montero .............................. 10.0 Qts. (9.5L)
Montero Sport
2.4L
With Rear Heater .................. 9.5 Qts. (9.0L)
Without Rear Heater ............... 8.5 Qts. (8.0L)
3.0L
With Rear Heater ................ 10.6 Qts. (10.0L)
Without Rear Heater ............... 9.5 Qts. (9.0L)
3000GT ................................ 8.5 Qts. (8.0L)
Crankcase (Includes Filter)
Diamante ............................... 4.5 Qts. (4.3L)
Eclipse
Non-Turbo ............................ 4.5 Qts. (4.3L)
2.0L Turbo ........................... 4.6 Qts. (4.4L)
Galant ................................. 4.5 Qts. (4.3L)
Mirage
1.5L ................................. 3.5 Qts. (3.3L)
1.8L ................................. 4.0 Qts. (3.8L)
Montero ............................ (1) 5.0 Qts. (4.8L)
Montero Sport
2.4L ................................. 4.5 Qts. (4.3L)
3.0L ................................. 5.2 Qts. (4.9L)
3000GT
Non-Turbo ............................ 4.5 Qts. (4.3L)
Turbo ................................ 5.0 Qts. (4.6L)
Differential (SAE 80W-90/API GL-5)
Eclipse ................................... .9 Qt. (.8L)
Montero
Front ................................ 1.3 Qts. (1.2L)
Rear ................................. 3.3 Qts. (3.2L)
Montero Sport
Front ................................ 1.2 Qts. (1.1L)
Rear
2.4L ............................... 1.6 Qts. (1.5L)
3.0L ............................... 2.7 Qts. (2.6L)
3000GT ................................. 1.2 Qts. (1.1L)
Manual Transaxle (SAE 75W-85/API GL-4)
Eclipse
Non-Turbo ( 2) ........................ 2.1 Qts. (2.0L)
Turbo
AWD ................................ 2.4 Qts. (2.3L)
FWD ................................ 2.1 Qts. (2.0L)
Galant ................................. 2.3 Qts. (2.2L)
Mirage
1.5L ................................. 2.2 Qts. (2.1L)
1.8L ................................. 2.3 Qts. (2.2L)
3000GT
AWD .................................. 2.5 Qts. (2.4L)
FWD .................................. 2.4 Qts. (2.3L)
Manual Transmission (SAE 75W-85/API GL-4)
Montero ................................ 3.3 Qts. (3.2L)
Montero Sport .......................... 2.4 Qts. (2.3L)
Power Steering (Dexron-II)
3000GT W/4-Wheel Steering .............. 3.2 Pts. (1.5L)
Montero ................................ 2.2 Pts. (1.1L)
All Others .............................. 1.9 Pts. (.9L)
Transfer Case (SAE 75W-85/API GL-4)
Eclipse (AWD) ........................... 1.1 Pts. (.5L)
Montero ................................ 5.0 Pts. (2.5L)
Montero Sport .......................... 4.6 Pts. (2.3L)
3000GT .................................... .7 Pt. (.3L)
( 1) - Add .5 qt. (.3L) if oil cooler is drained.

Oil ................................................. 7500
Oil Filter .................................... (3) 15,000
Spark Plugs ....................................... 30,000
Spark Plug Wires .................................. 60,000
Timing & Balance Shaft Belts ...................... 60,000
( 1) - Inspect fluid every 15,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 2) - Inspect fluid every 30,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 3) - Replace oil filter at oil change if annual mileage is
less than 7500 miles.









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REPLACEMENT INTERVALS TABLE (MIRAGE)








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Component Miles
Air Filter ........................................ 30,000
Automatic Transaxle Fluid ............................ ( 1)
Coolant .............................................. ( 2)
Oil ................................................. 7500
Oil Filter .................................... ( 3) 15,000
Spark Plugs ....................................... 30,000
Spark Plug Wires .................................. 60,000
Timing Belt ....................................... 60,000
( 1) - Inspect fluid every 15,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 2) - Inspect fluid every 30,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 3) - Replace oil filter at oil change if annual mileage is
less than 7500 miles.









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REPLACEMENT INTERVALS TABLE (MONTERO)








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Component Miles
Air Filter ........................................ 30,000
Automatic Transmission Fluid ......................... ( 1)
Coolant ........................................... 30,000
Front & Rear Axle Fluid ( 2) ....................... 30,000
Oil ................................................. 7500
Oil Filter .................................... ( 3) 15,000
Manual Transmission .................................. ( 4)
Spark Plugs ( 5) ................................... 60,000
Spark Plug Wires .................................. 60,000
Timing Belt ....................................... 60,000
( 1) - Inspect fluid every 15,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 2) - Limited-slip differential.
( 3) - Replace oil filter at oil change if annual mileage is
less than 7500 miles.
( 4) - Inspect fluid every 30,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.

(5) - Use Platinum spark plugs only.








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REPLACEMENT INTERVALS TABLE (MONTERO SPORT)








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Component Miles
Air Filter ........................................ 30,000
Automatic Transmission
Except 4WD ......................................... ( 1)
4WD ............................................. 30,000
Axle Fluid ( 2) .................................... 30,000
Coolant ........................................... 30,000
Oil ................................................. 7500
Oil Filter .................................... ( 3) 15,000
Spark Plugs ( 4) ................................... 60,000
Spark Plug Wires .................................. 60,000
Timing Belt ....................................... 60,000
( 1) - Inspect fluid every 15,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 2) - Limited-slip differential.
( 3) - Replace oil filter at oil change if annual mileage is
less than 7500 miles.
( 4) - Use Platinum spark plugs only.









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REPLACEMENT INTERVALS TABLE (3000GT)








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Component Miles
Air Filter ........................................ 30,000
Automatic Transaxle Fluid ............................ ( 1)
Coolant ........................................... 30,000
Oil
Non-Turbo ......................................... 7500
Turbo ............................................. 5000
Oil Filter
Non-Turbo ....................................... 15,000
Turbo ........................................... 10,000
Spark Plugs
Except Platinum ................................. 30,000
Platinum ........................................ 60,000
Spark Plug Wires ( 2) .............................. 60,000
Timing Belt ....................................... 60,000
( 1) - Inspect fluid every 15,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 2) - Except vehicles equipped with Federal Emissions.









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BELT ADJUSTMENT TABLE








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( 1) Deflection ( 1) Deflection
Application New Belt - In. (mm) Used Belt - In. (mm\
)
Diamante
Generator & A/C .... .24-.28 (6.0-7.2) ....... .32-.37 (8.2-9.3\
)
P/S ................ .33-.37 (8.4-9.3) ..... .46-.52 (11.7-13.4\
)
Eclipse
2.0L Non-Turbo

release bearing with solvent. Apply a light coat of multipurpose
grease to release bearing sliding surface. Apply a very light coating
of grease to input shaft splines. DO NOT allow grease or dirt on
clutch disc or pressure plate surfaces.
3) To install remaining components, reverse removal
procedure. Refill all fluids to proper levels. Adjust all control
cables, clutch pedal height and free play. See CLUTCH PEDAL HEIGHT and
CLUTCH PEDAL FREE PLAY under ADJUSTMENTS. See Fig. 1.
Removal (4WD Models)
1) Remove switch panel from rear console. Remove suspension
control switch or hole cover. Disconnect rear console harness
connector. Remove side panel. Remove rear console assembly. Remove
shift lever knob(s). Remove floor console harness connector. Remove
front console assembly.
2) Move transmission lever to Neutral position and transfer
lever to 4H (4WD high range) position. Remove control lever boot
retainer and boot. Remove transmission and transfer control lever
assemblies. Remove control lever bushing (transmission), gaskets and
stopper plates.
3) Raise and support vehicle. Remove skid plate and front
exhaust pipe. Drain transmission and transfer case fluid. Index mark
front and rear drive shaft flanges. Remove front and rear drive
shafts.
4) Remove drive shaft dust seals. Disconnect HI/LO and
2WD/4WD detection switch connectors. Disconnect back-up light switch
connector. Disconnect center differential lock detection switch
connector. Disconnect center differential lock operation switch
connector. Disconnect 4WD operation detection switch.
5) Disconnect speedometer cable. Remove clutch slave cylinder
heat shield. Remove clutch slave cylinder (without disconnecting
hydraulic line) and wire aside. Remove starter and starter cover.
Remove heat shield, both transmission stays and bellhousing lower
cover.
6) Support transmission with transmission jack. Remove
transfer case roll stopper and bracket. Remove crossmember and engine
mounting rear insulator. Remove transfer case protector bracket and
mass damper. Remove remaining bellhousing bolts. Pull toward rear of
vehicle to free transmission input shaft from clutch. Lower
transmission/transfer assembly from vehicle.
7) If reusing pressure plate, mark pressure plate to flywheel
for installation reference. Insert a clutch alignment tool to prevent
pressure plate and clutch disc from dropping. Loosen pressure plate
bolts gradually in a crisscross pattern to avoid warping pressure
plate flange during removal. Remove pressure plate and clutch disc.
See Fig. 3 .
Fig. 3: Removing & Installing Clutch On Flywheel (Typical)
Courtesy of Mitsubishi Motor Sales of America.
Inspection
1) Check release bearing and release fork for damage or wear.

DIFFERENTIAL & AXLE SHAFTS - FRONT
1998 Mitsubishi Montero
1997-98 DRIVE AXLES
Mitsubishi Differentials & Axle Shafts - Front
Montero, Montero Sport
DESCRIPTION & OPERATION
Front axle assembly consists of a differential carrier,
housing tube, inner shaft and drive axles. See Figs. 1 and 2. A full-
floating axle design is used. Drive axles are flexible assemblies made
up of a shaft and an inner Birfield Joint (BJ) and an outer Double
Offset Joint (DOJ).
Fig. 1: Exploded View Of Front Differential Assembly & Suspension
Components (Typical)
Courtesy of Mitsubishi Motor Sales of America.

AXLE RATIO SPECIFICATIONS








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Application Ratio
Montero ..................................................... 4.27:1
Montero Sport .................................................. (1)
( 1) - On vehicles equipped with wide fender, ratio is 4.64:1. On
vehicles with narrow fender, ratio is 4.27:1.









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LUBRICATION
CAPACITY
DIFFERENTIAL FLUID CAPACITY








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Application Specification
Montero & Montero Sport ............................ 2.4 Pts. (1.1L)\









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FLUID TYPE
All models use fluid type SAE 80W-90/API GL-5.
TROUBLE SHOOTING
NOTE: See TROUBLE SHOOTING - BASIC PROCEDURES article in the
GENERAL TROUBLE SHOOTING section.
REMOVAL & INSTALLATION
AXLE SHAFTS R & I
Removal
1) Raise and support vehicle. Remove wheels and undercover.
Ensure hub is in free-wheeling position. Place transfer case in 2H
position. Remove drive hub cover, snap ring and shim from axle shaft.
See Fig. 3 . Remove brake calipers and support aside.
2) Disconnect tie rod assembly. Support lower control arm
with jack. Separate ball joints from knuckle. Remove knuckle and front
hub assembly. Using flat-blade pry bar, carefully remove left axle
shaft from differential carrier. DO NOT damage oil seal. On right axle
shaft, remove axle shaft-to-inner shaft flange retaining bolts. Remove
right axle shaft.
CAUTION: Replace circlips on BJ/DOJ splined shaft end.
Installation
1) Install right axle shaft on inner shaft flange. Install
new circlip on DOJ side of left axle shaft. Carefully install left
axle shaft into differential. DO NOT damage oil seal.
2) Reinstall knuckle with front hub assembly. To complete
installation, reverse removal procedure. Install shim and snap ring.
Check axle end play. See Fig. 4. End play should be .016-.028" (.4-.7
mm). If end play is not within specification, install correct shim.

Fig. 3: Exploded View Of Auto-Locking Hub Assembly (Typical)
Courtesy of Mitsubishi Motor Sales of America.
Fig. 4: Measuring Axle Shaft End Play
Courtesy of Mitsubishi Motor Sales of America.
DIFFERENTIAL CARRIER ASSEMBLY

Removal
1) Raise and support vehicle. Drain gear oil. Support
differential carrier. Remove axle shafts and inner shaft. See
AXLE SHAFTS R & I and
INNER SHAFT & BEARING . Place alignment mark on drive shaft and pinion
companion flange for reassembly reference.
2) Remove drive shaft. Remove differential mounting brackets
at differential and frame. See Fig. 1. Disconnect front crossmember
from frame. Remove differential carrier assembly and front
crossmember. Remove differential carrier from front crossmember.
Installation
To install, reverse removal procedure. Align marks on drive
shaft and pinion companion flange.
INNER SHAFT & BEARING
Removal
Remove right axle shaft. See AXLE SHAFTS R & I. Using slide
hammer, remove inner shaft from differential carrier. See Fig. 1. If
dust seal replacement is required, pry dust seal from housing tube
assembly using a screwdriver. To remove bearing, bend outer area of
dust cover inward on inner shaft. Press shaft out of bearing. Remove
dust cover from shaft.
Inspection
Inspect inner shaft for damaged splines or threads. Inspect
bearing for roughness or damage.
Installation
1) Install housing tube. Using Seal Installer (MB990955) and\
Handle (C-4171), install NEW dust seal in housing tube. Dust seal must\
be even with housing tube. Coat seal lip with grease.
2) Using a pipe with O.D. of 2.00" (75.0 mm), wall thickness\
of .16" (4.0 mm) and overall length of 2.00" (50.0 mm), install dust\
cover on shaft. Coat inside of dust cover with grease. Press bearing
on shaft. Install new circlip on inner shaft. Carefully drive inner
shaft into differential. DO NOT damage oil seal. To complete
installation, reverse removal procedure.
OVERHAUL
AXLE SHAFTS & BEARINGS
NOTE: References to BJ and DOJ refer to Birfield Joint and Double
Offset Joint, respectively.
Disassembly
1) Remove boot bands. Remove circlip from DOJ outer race.
Separate axle shaft from DOJ outer race. Remove balls from DOJ cage.
Remove DOJ cage from DOJ inner race in direction of BJ. See Fig. 2.
2) Remove snap ring from axle shaft shaft. Remove DOJ inner
race from shaft. Remove circlip from shaft. Wrap tape around splines
of shaft to prevent boot damage during removal. Remove DOJ boot. Note
size of boot. Remove dust cover from shaft. Move boot protector toward
BJ side of shaft and remove. Remove BJ boot.
CAUTION: Axle shaft and BJ are serviced as a unit. DO NOT attempt to
disassemble BJ and axle shaft.
Reassembly
1) Coat shaft with light coat of grease. Wrap splines with

tape. Install BJ boot, bands and DOJ boot on shaft. Ensure correct
size boot is installed in proper location.
2) Pack proper amount of grease in BJ and BJ boot. See
CV JOINT GREASE CAPACITY table. Boot bands must be installed so lever
is pulled toward rear of vehicle when band is tightened.
3) Place DOJ cage on shaft with smaller diameter installed
first. Install circlip, DOJ inner race and snap ring on shaft. Apply
grease to DOJ inner race and cage. Install balls into cage. Apply
proper amount of grease to outer DOJ race. See
CV JOINT GREASE CAPACITY table. Install shaft into DOJ outer race.
Install circlip.
4) Place DOJ boot over DOJ outer race. Install boot bands so
lever is pulled toward rear of vehicle when band is tightened. Adjust
DOJ boot bands to have proper distance between center line of boot
bands. Distance should be 3.03-3.27" (76.9-83.0 mm). This distance is
necessary to control air in DOJ boot. Tighten boot bands. Install boot
protector and band. Install dust cover on shaft.
CV JOINT GREASE CAPACITY









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Application ( 1) Ozs. (g)
BJ Boot & Joint
Montero ................................................ 4.6 (130)\
Montero Sport .......................................... 4.2 (120)\
DOJ Boot & Joint
Montero ................................................ 3.5 (100)\
Montero Sport .......................................... 4.9 (140)\
( 1) - Apply 1/2 of the amount of grease specified to joint, the other
half to inside of CV boot.









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DIFFERENTIAL ASSEMBLY
Disassembly
1) Remove differential carrier from vehicle. See
DIFFERENTIAL CARRIER ASSEMBLY under REMOVAL & INSTALLATION. Remove
cover. Mark bearing caps for reassembly reference. Remove bearing
caps. Remove differential case assembly from carrier.
CAUTION: Ensure adjusting spacers, bearing caps, gears and side
bearings are marked for reassembly reference. Components
must be installed in original location.
2) Using bearing puller, remove differential case side
bearings. Loosen ring gear retaining bolts in diagonal sequence.
Remove ring gear. Remove drive pinion shaft lock pin from ring gear
side. Remove pinion shaft and pinion gears. Remove side gears and
thrust spacers.
Drive Pinion Removal
Remove pinion flange nut. Scribe alignment mark on pinion
companion flange and drive pinion. Remove flange. Using soft-faced
hammer, drive out pinion. Remove rear bearing and oil seal from
carrier. Remove rear adjusting shim from pinion. See Fig. 1. Press
front bearing from pinion. Remove front adjusting shim and spacer from
pinion.
Cleaning & Inspection
Use cleaning solvent to rinse gears and components. Check
bearings for wear or discoloration. Check gear carrier for cracks or
damage. Check pinion, side gear and flange splines for excessive wear.

Check ring gear, pinion and side gears for wear or damage. Replace
components as necessary.
Reassembly & Adjustments
1) Place side gear thrust spacers behind side gears, in
original position. Assemble side gears in differential case. Install
pinion gears and washers. Rotate pinion gears to mesh with side gears.
2) Install pinion shaft without lock pin. Check pinion and
side gear backlash. Install wooden wedge to lock side gears. Using
dial indicator, measure gear backlash. See Fig. 5.
3) Backlash must be within specification. See
PINION & SIDE GEAR BACKLASH SPECIFICATIONS table. Adjust backlash by
using different side gear spacers. Ensure both sides are equally
shimmed. If backlash cannot be adjusted within specifications, replace
side and pinion gears as matched set.
4) Install pinion shaft lock pin. Using a punch, securely
stake lock pin in 2 places. Ensure adhesive is removed from ring gear
mounting bolts and gear mounting surface. Clean internal threads with
tap.
5) Install ring gear on differential case. Ensure alignment
marks on differential case and ring gear are aligned. Apply Loctite
271 to bolts and install bolts. Tighten bolts alternately in diagonal
sequence to specification. See TORQUE SPECIFICATIONS.
PINION & SIDE GEAR BACKLASH SPECIFICATIONS









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Application In. (mm)\
Standard ................................................ .003 (.08)\
Wear Limit .............................................. .008 (.20)\









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Fig. 5: Checking Pinion & Side Gear Backlash
Courtesy of Mitsubishi Motor Sales of America.
Drive Pinion Depth
1) Install pinion bearing races in carrier housing. Ensure