oil MITSUBISHI MONTERO 1998 Workshop Manual
[x] Cancel search | Manufacturer: MITSUBISHI, Model Year: 1998, Model line: MONTERO, Model: MITSUBISHI MONTERO 1998Pages: 1501, PDF Size: 25.81 MB
Page 363 of 1501
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
Page 364 of 1501
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
\
\
\
\
\
\
\
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.
\
\
\
\
\
\
\
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.
Page 366 of 1501
![MITSUBISHI MONTERO 1998 Workshop Manual races are fully seated. Install Pinion Height Gauge (MB990901-01) with\
pinion bearings. See Fig. 6. DO NOT install oil seal.
2) Using INCH-lb. torque wrench, measure pinion rotating
torque.](/img/19/57333/w960_57333-365.png "MITSUBISHI MONTERO 1998 Workshop Manual races are fully seated. Install Pinion Height Gauge (MB990901-01) with\
pinion bearings. See Fig. 6. DO NOT install oil seal.
2) Using INCH-lb. torque wrench, measure pinion rotating
torque.")
races are fully seated. Install Pinion Height Gauge (MB990901-01) with\
pinion bearings. See Fig. 6. DO NOT install oil seal.
2) Using INCH-lb. torque wrench, measure pinion rotating
torque. Gradually tighten pinion height gauge to increase rotating
torque to proper specification. See
PINION ROTATING TORQUE SPECIFICATIONS table. Install Cylinder Gauge
(MB990903-01). Ensure flat areas are aligned and that gauge contacts
carrier bearing bores firmly. See Fig. 6.
3) Select adjusting shim with same thickness as gap between
cylinder gauge and pinion height gauge. Use minimum amount of
adjusting shims. Install selected adjusting shims between drive pinion
gear and rear drive pinion bearing. Using Bearing Installer (MB990802-
01), install rear pinion bearing.
PINION ROTATING TORQUE SPECIFICATIONS
\
\
\
\
\
\
\
Application INCH Lbs. (N.m)\
Oil Seal Not Installed
With Lubrication ............................... 1.3-2.2 (.15-.25)\
Without Lubrication ............................ 2.6-4.3 (.30-.50)\
Oil Seal Installed
With Lubrication ............................... 3.1-3.9 (.35-.45)\
Without Lubrication ............................ 4.3-6.1 (.50-.70)\
\
\
\
\
\
\
\
Fig. 6: Setting Drive Pinion Depth
Courtesy of Mitsubishi Motor Sales of America.
Drive Pinion Preload
1) Install drive pinion in differential carrier. Install
Page 367 of 1501
spacer, pinion front shim(s) and front pinion bearing. DO NOT install
oil seal at this time. Install pinion companion flange, washer and
retaining nut. Tighten nut to 137 ft. lbs. (190 N.m).
2) Using INCH-lb. torque wrench, check pinion rotating torque
without pinion oil seal. See PINION ROTATING TORQUE SPECIFICATIONS
table. Adjust rotating torque by replacing drive pinion front shims or
spacer. Once correct rotating torque is obtained, install oil seal.
Coat seal lip with grease.
3) Install pinion flange so alignment marks are correct.
Apply light coat of grease to flange washer contact area. Install NEW
retaining nut. Check pinion rotating torque with pinion oil seal
installed. Rotating torque must be within specification. See
PINION ROTATING TORQUE SPECIFICATIONS table.
Side Bearing Installation
1) Using Bearing Installer (MB990802-01), install bearings o\
n
differential case. Select 2 side bearing adjusting shims thinner than
those removed. Shims must be equal in thickness on both sides. Install
shims on each side of case assembly. Install case assembly in
differential carrier housing.
2) Push case assembly fully to one side of carrier. Using 2
feeler gauges (feeler gauges 180 degrees opposed), measure clearance
between carrier and side bearing. Remove shims from one side of
differential carrier.
3) Measure thickness of shims removed. Add .002" (.05 mm) to\
50% of measured clearance and then add thickness measurement of
removed shim. This is thickness of new shim that should be installed
on each side of case. Install equal thickness shims on each side of
case assembly.
NOTE: Ensure zero clearance exists between gear carrier and
adjusting shim.
4) Install side bearing shims and differential case assembly
in differential carrier. Using brass drift, tap shims to fit them to
side bearing outer race. Install bearing caps. Tighten bolts to
specification. See TORQUE SPECIFICATIONS . Check ring gear backlash.
Ring Gear Backlash
1) Lock drive pinion in place. Using dial indicator, check
ring gear backlash at heel of ring gear tooth. Measure at 4 locations
of ring gear. Gear backlash should be .004-.006" (.10-.15 mm).
2) If backlash is not within specification, change side
bearing adjusting shims and recheck backlash. See
GEAR TOOTH CONTACT PATTERNS article in GENERAL INFORMATION. Check gear
tooth contact using Prussian Blue.
CAUTION: When changing shims, total thickness of all shims must
remain constant to ensure correct bearing preload.
Ring Gear Runout
Using dial indicator, measure runout at back side of ring
gear. Runout should not exceed .002" (.05 mm). If runout is excessive,\
change ring gear-to-differential case mounting position. Ensure ring
gear mounting bolts are tightened to correct specification. Recheck
runout. Install cover and gasket.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS \
\
\
\
\
\
\
Application Ft. Lbs. (N.m)\
Page 369 of 1501
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.
Page 372 of 1501
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
Page 373 of 1501
into left side axle housing. Install left axle shaft assembly into
axle housing, and tighten nuts to specification. See
TORQUE SPECIFICATIONS.
2) Install right axle shaft assembly into axle housing
without shim or "O" ring. Temporarily tighten nuts in diagonal
sequence to 51.6 INCH lbs. (5.8 N.m) in 2 stages. Measure clearance
between bearing case of right axle and rear axle housing end with
feeler gauge.
3) Select shims equal to sum of measured clearance plus .002-
.008" (.05-.20 mm). Remove right axle shaft, and install selected
shim(s) and "O" ring into right axle housing end. Install right axle
shaft assembly into rear axle housing. Tighten nuts in diagonal
sequence to specification. See TORQUE SPECIFICATIONS.
4) Using dial indicator, check end play of axle shaft. End
play should be .002-.008" (.05-.20 mm). If end play is not within
specification, change shim(s) to obtain correct end play. Reverse
removal procedure to install remaining components. Adjust parking
brake, and bleed brake system.
CARRIER ASSEMBLY
Removal
Raise and support vehicle. Drain gear oil. Mark drive shaft
flange-to-pinion flange position. Remove drive shaft. Remove axle
shafts. See AXLE SHAFT R & I . Support differential carrier with jack.
Remove differential carrier retaining nuts. Remove differential
carrier.
Inspection
Check for leaks at vent plug, differential carrier companion
flange and where carrier joins axle housing.
Installation
Apply sealant to axle housing surface. To install, reverse
removal procedure. Align marks on drive shaft and pinion flange.
DRIVE SHAFT
Removal
Make match marks on drive shaft yoke flange and pinion
flange. Remove bolts and drive shaft from vehicle.
Installation
To install, reverse removal procedure. Ensure match marks are
aligned. Tighten bolts to specification. See TORQUE SPECIFICATIONS.
OVERHAUL
AXLE SHAFT OVERHAUL
Removal
1) Secure axle shaft assembly in a vise, and remove one
retainer bolt from backing plate. Push bearing case completely to side
of dust cover. Place adhesive tape around edge of bearing case at
retainer bolt hole to prevent damage.
CAUTION: DO NOT damage bearing case or axle shaft when grinding or
chiseling retainer ring.
2) Secure axle shaft, and grind retainer ring until retainer
ring wall thickness is .04-.06" (1.0-1.5 mm) on axle shaft side and .
08" (2.0 mm) on bearing side. See Fig. 4.
Page 374 of 1501
![MITSUBISHI MONTERO 1998 Workshop Manual 3) Change angle of grind, and remove remaining .08" (2.0 mm)\
of retainer ring wall on bearing side. Using a chisel, cut retainer
ring. Remove ring. DO NOT damage axle shaft.
4) Ins](/img/19/57333/w960_57333-373.png "MITSUBISHI MONTERO 1998 Workshop Manual 3) Change angle of grind, and remove remaining .08\" (2.0 mm)\
of retainer ring wall on bearing side. Using a chisel, cut retainer
ring. Remove ring. DO NOT damage axle shaft.
4) Ins")
3) Change angle of grind, and remove remaining .08" (2.0 mm)\
of retainer ring wall on bearing side. Using a chisel, cut retainer
ring. Remove ring. DO NOT damage axle shaft.
4) Install Puller (MB990787-01) to remove bearing case from
axle shaft. See Fig. 5. Rotate nuts with equal force to remove wheel
bearing. Remove bearing outer race using a hammer and drift. Remove
oil seal from axle housing using a slide hammer and hook.
Fig. 4: Grinding Bearing Retainer Ring
Courtesy of Mitsubishi Motor Sales of America.
Page 375 of 1501
Fig. 5: Removing Bearing Case From Axle Shaft
Courtesy of Mitsubishi Motor Sales of America.
Inspection
Inspect bearings for roughness, pitting or damage. Inspect
axle shaft for damaged splines or flange. Inspect bearing case for
cracks or damage.
Installation
1) Apply Multipurpose Grease (SAE J310) to oil seal, oil sea\
l
cavity and contact surfaces. Install oil seal using seal driver. Press
new oil seal into bearing case until it is flush with face of bearing
case. Install backing plate and bearing case.
2) Apply grease to external surfaces of bearing outer race.
Press bearing outer race into bearing case. Install bearing on axle
shaft. Install rear brake assembly with bearing case onto axle.
Install inner bearing on axle. Install NEW retainer ring. Do not
exceed 22,046 lbs. (100,00 N) when pressing on retainer ring. Install
NEW snap ring.
3) Using a feeler gauge, measure clearance between snap ring
and NEW retainer ring. Clearance should be less than .007" (.17 mm).
If clearance exceeds specification, install correct snap ring. See
SNAP RING THICKNESS SPECIFICATION table.
SNAP RING THICKNESS SPECIFICATION
\
\
\
\
\
\
\
Thickness: In. (mm) Color\
Page 378 of 1501
assembly and drive pinion installation.
Carrier Assembly & Drive Pinion Removal
1) Remove differential carrier from axle housing. Remove lock
plates. Mark location of side bearing nuts for reassembly. Remove side
bearing nuts. See Fig. 9. Mark location of bearing caps for
reassembly. Remove bearing caps. Remove differential carrier assembly
from differential housing.
Fig. 9: Exploded View Of Conventional Rear Differential (Typical)
Courtesy of Mitsubishi Motor Sales of America.
2) Secure drive pinion companion flange from turning. Remove
companion flange retaining nut. Scribe alignment marks on drive pinion
and companion flange for reassembly. Using soft-face hammer, drive
pinion out of housing. Remove front adjusting shim and spacer from
pinion.
3) Using bearing splitter and press, remove rear bearing from
pinion. Remove rear adjusting shim from drive pinion. Remove oil seal
and bearing races from differential housing.
Disassembly (Carrier Assembly)
1) Using bearing splitter and press, remove differential case
side bearings. Place alignment marks on ring gear and differential
case for reassembly. Loosen ring gear bolts in diagonal sequence.
Remove ring gear.
2) Remove pinion shaft lock pin from differential carrier.
Remove differential pinion shaft and thrust block (if equipped).
Remove pinion gears and washers. Remove side gears and thrust spacers.
Mark components for reassembly reference.
Inspection
Wash parts in clean solvent and dry with compressed air.
Inspect bearings for discoloration and/or flaking. Check all gears for
irregular wear or damage. Ring gear and drive pinion must be replaced