1998 MITSUBISHI MONTERO Service Manual

POWER BRAKE BOOSTER
System Check
1) Run engine for 1-2 minutes. Shut engine off, and depress
brake pedal several times with normal pressure. If pedal height
gradually becomes higher with successive applications, power brake
booster is okay. If pedal height remains steady, power brake booster
is not operating properly, go to next step.
2) With engine stopped, depress brake pedal repeatedly until
pedal height no longer falls. Hold brake pedal down, and start engine.
If pedal moves downward slightly, power brake booster is okay. If
pedal height does not change, power brake booster is not operating
properly, go to next step.
3) With engine running, press and hold brake pedal. Shut off
engine. Hold brake pedal for 30 seconds. Brake pedal height should not
change. If pedal rises, power brake booster is not operating properly,
go to next step.
4) If brake booster operation is not as specified in each
step, disconnect vacuum hose at brake booster and check for sufficient
vacuum with engine running. Also check brake booster check valve
operation. Repair or replace as necessary.
Check Valve Inspection
Remove vacuum hose from power brake booster. Do not remove
check valve from hose. Check valve should hold vacuum in one direction
and allow air to pass in other direction.
LOAD-SENSING PROPORTIONING VALVE (LSPV)
Montero
1) Before diagnosing Load-Sensing Proportioning Valve (LSPV)\
,
ensure all other brake components are operating properly. When all
other brake system components are determined to be okay, ensure LSPV
spring length is within specification. See Fig. 1. See LOAD-SENSING
PROPORTIONING VALVE (LSPV) under ADJUSTMENTS.
2) After spring length is determined to be within
specification, connect pressure gauges to input and output ports of
LSPV. See Fig. 7. Bleed brake system. See BLEEDING BRAKE SYSTEM.
Fig. 7: Connecting Pressure Gauges To LSPV (Montero)
Courtesy of Mitsubishi Motor Sales of America.
3) With vehicle unloaded at correct ride height and LSPV
spring correctly adjusted to 8.9" (227 mm), slowly depress brake pedal\

and check fluid input and output pressures at LSPV. See
LSPV PRESSURE SPECIFICATIONS table.
4) Disconnect spring at support and pull spring and lever
toward support until spring length is 10.1" (257 mm). See Fig. 1.
Slowly depress brake pedal and check input and output pressures at
LSPV. See LSPV PRESSURE SPECIFICATIONS table. If fluid input pressure
is okay and output pressure is not within specification, replace LSPV
assembly. Remove gauges and bleed brake system.
LSPV PRESSURE SPECIFICATIONS









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LSPV Spring Inlet Pressure Outlet Pressure
Length psi (kg/cm) psi (kg/cm)
8.9" (227 mm) ............. 1422 (100) .......... 873-1002 (61-\
70)
8.9" (227 mm) ............. 2560 (180) ......... 1129-1314 (79-\
92)
10.1" (257 mm) ............ 2560 (180) ....... 1863-2148 (131-1\
51)









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NON-LOAD-SENSING PROPORTIONING VALVE
Pressure Test (Except Montero)
1) Connect pressure gauges to input and output ports of
proportioning valve. See Fig. 8. Bleed brake system. See
BLEEDING BRAKE SYSTEM .
Fig. 8: Connecting Pressure Gauges To Proportioning Valve (Typical)
Courtesy of Mitsubishi Motor Sales of America.
2) Slowly depress brake pedal. Check readings on pressure
gauges. Ensure output pressure begins to drop relative to input

pressure at specified pressure range (split point). See
SPLIT POINT PRESSURE SPECIFICATIONS table.
SPLIT POINT PRESSURE SPECIFICATIONS









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Application psi (kg/cm)
Diamante .......................................... 312-383 (22-27)\
Eclipse
Without ABS ...................................... 320-391 (22-27)\
With ABS ......................................... 320-391 (22-27)\
Galant ............................................. 462-533 (33-38)\
Mirage
2-Door ........................................... 320-392 (22-26)\
4-Door ........................................... 391-463 (27-32)\
Montero Sport .................................................. ( 1)
( 1) - Information not available from manufacturer.









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3) Continue depressing brake pedal, and check readings on
pressure gauges. See PROPORTIONING VALVE PRESSURE SPECIFICATIONS
table. If fluid pressures or split point are not within specification,
replace proportioning valve.
PROPORTIONING VALVE PRESSURE SPECIFICATIONS









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Application/ Inlet Pressure (1) Outlet Pressure
Model psi (kg/cm) psi (kg/cm)
Diamante ................... 1138 (80) ........... 676-747 (48-53\
)
Eclipse
With ABS ................. 996 (69) ............ 569-640 (39-44\
)
Without ABS .............. 925 (61) ............ 462-533 (32-37\
)
Galant ..................... 996 (69) ................... 604 (43\
)
Mirage
2-Door ................... 1422 (98) ........... 566-680 (39-47\
)
4-Door ................... 1422 (98) ........... 619-733 (43-51\
)
3000GT
Hatchback ................ 906 (64) ............ 651-723 (46-51\
)
Convertible .............. 1117 (79) ........... 846-917 (60-65\
)
Montero Sport ................. ( 1) .......................... ( 1)
( 1) - Information is not available from manufacturer.









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REMOVAL & INSTALLATION
FRONT DISC BRAKE PADS
CAUTION: DO NOT remove or contaminate special grease coating on lock
pins.
Removal & Installation (Except 3000GT AWD)
1) Raise and support vehicle. Remove front wheels. Remove
lower lock pin or sleeve bolt. See Figs. 13-15. Lift caliper body
upward. Support caliper aside. Remove shims and pads from support
mounting. Remove pad clips.
2) If installing new pads, compress piston to bottom of bore.
Install retaining clips, pads and shims. Start engine and depress
brake pedal several times to expand caliper piston. Check brake fluid
level.

Removal & Installation (3000GT AWD)
1) Raise and support vehicle. Remove front wheels. Remove
clip, brake pad retaining pins and spring. See Fig. 17. Remove shims
and pads from caliper. Keep track of location of shims for reassembly.
2) Compress caliper pistons fully in bores. Install shims on
brake pads. Install brake pads. Install spring clip, pad retaining
pins and clip. Start engine and depress brake pedal several times to
expand caliper piston. Check brake fluid level.
FRONT BRAKE CALIPER
Removal
Raise and support vehicle. Remove front wheels. Remove hose
clip from brake hose mount (if equipped). Disconnect brake hose from
caliper. Remove upper and lower caliper-to-steering knuckle bolts.
Lift caliper body upward. Remove caliper.
Installation
To install, reverse removal procedure. Tighten bolts to
specification. See TORQUE SPECIFICATIONS . Bleed brake system. See
BLEEDING BRAKE SYSTEM .
FRONT BRAKE ROTOR
Removal & Installation (Except Montero & Montero Sport)
Raise vehicle, and remove wheel(s). Remove caliper. See
FRONT BRAKE CALIPER . Slide rotor off hub. To install, reverse removal
procedure.
Removal (Montero & Montero Sport)
Raise and support vehicle. Remove brake caliper. See
FRONT BRAKE CALIPER . On 4WD, remove Remove bearing grease cap, snap
ring, shim, 6 bolts and drive flange from axle shaft. On 2WD remove 6
bolts and hub cover. Remove screw(s) from lock washer. Remove lock
washer. Remove lock nut using Lock Nut Wrench (MB990954). Remove hub
assembly. Place match marks on rotor and hub. Remove rotor from front
hub.
Installation
1) Install rotor on hub. Service wheel bearings and seals as
necessary. Install front hub assembly. Install lock nut, and tighten
it to 119 ft. lbs. (165 N.m). Loosen lock nut, and retighten it to 18
ft. lbs. (24 N.m). Loosen lock nut 30-40 degrees. Install lock washer
and screw(s).
2) On 2WD, reverse removal procedure for remaining
components. On 4WD, install drive flange, shim and snap ring. Using
feeler gauge, check axle shaft-to-hub clearance. Clearance should be
0.016-0.028" (0.41-0.71 mm). Use appropriate shim to obtain correct
clearance. Shim is located behind snap ring on end of axle shaft.
Recheck clearance if necessary. Install remaining components.
PARKING BRAKE SHOES
Removal & Installation (Diamante)
1) Raise and support vehicle. Remove rear wheels. Remove rear
disc brake caliper and rotor. If rotor removal is difficult, rotate
rotor until hole in rotor is upward. Back-off brake shoe adjustment
with a flat blade screwdriver through hole in rotor.
2) Disconnect rear speed sensor. See Fig. 9. Remove 4 bolts
and hub. Remove screw and shoe hold-down spring. Remove shoe. To
install, reverse removal procedure. Adjust brake shoe by turning
adjuster star wheel.

Removal (Eclipse, Montero & Montero Sport)
1) Raise and support vehicle. Remove rear wheels. Disconnect
rear speed sensor (if equipped). Remove rear disc brake calipers and
rotors. See REAR BRAKE CALIPER .
2) Remove adjuster spring. Remove shoe hold-down cup, spring
and pin. See Fig. 10. Note how shoe-to-anchor spring is installed, and
then remove adjuster and shoe-to-anchor spring. Remove strut and
return spring. Remove clip and shoe and lining assembly.
Fig. 9: Exploded View Of Parking Brake Assembly (Diamante)
Courtesy of Mitsubishi Motor Sales of America.

Fig. 10: Exploded View Of Parking Brake Assembly (Typical With Rear
Disc Brakes - Except Diamante)
Courtesy of Mitsubishi Motor Sales of America.
CAUTION: Shoe-to-anchor spring must be installed correctly for proper
functioning of parking brakes.
Installation
1) To install, reverse removal procedure. When installing
shoe-to-anchor spring, ensure spring is installed correctly. When
installing adjuster, install left adjuster with adjusting bolt facing
vehicle front and right adjuster with adjusting bolt facing vehicle
rear.
2) On models with ABS, ensure gap between rotor teeth and
speed sensor pole piece is 0.008-0.039" (0.20-1.00 mm).
Removal (3000GT)
1) Raise and support vehicle. Remove rear wheel(s).
Disconnect rear speed sensor. Remove rear disc brake calipers and

rotors. See REAR BRAKE CALIPER .
2) On FWD models, remove grease cap, hub nut and hub. On AWD
models, disconnect rear axle from companion flange at hub. Remove axle
hub nut. Using slide hammer and Hub Adapter (MB991354), remove axle
from knuckle.
3) On all models, remove adjusting wheel spring. Remove shoe
hold-down cup, spring and pin. Note how shoe-to-anchor spring is
installed, and then remove adjuster and shoe-to-anchor spring. Remove
strut and return spring. Remove clip and shoe and lining assembly.
CAUTION: Shoe-to-anchor spring must be installed correctly for proper
functioning of parking brakes.
Installation
To install, reverse removal procedure. When installing shoe-
to-anchor spring, ensure spring is installed correctly. When
installing adjuster, install left adjuster with adjusting bolt facing
vehicle front and right adjuster with adjusting bolt facing vehicle
rear. On AWD, tighten companion flange nut to 188-217 ft. lbs. (260-
300 N.m).
REAR DISC BRAKE PADS
NOTE: Replace inner and outer pads at same time.
Removal
Raise and support vehicle. Remove rear wheels, and disconnect
parking brake cable. Remove lower lock pin bolt. Lift caliper body
upward. Using a wire, support caliper aside. Remove inner shims, anti-
squeak shim and pad assembly from support mounting. Remove pad clips.
Installation
Rotate piston to align notches in piston projection on back
of pads (if equipped). Install retaining clips, pad assembly, inner
shims and anti-squeak shim onto support mounting. Lower caliper body,
and install lock pin.
REAR BRAKE CALIPER
Removal
Raise and support vehicle. Remove rear wheels. Disconnect
brake hose from caliper. Cap end of brake line to prevent spillage.
Remove upper and lower caliper mounting bolts. Lift caliper body
upward. Remove caliper.
Installation
To install, reverse removal procedure. Tighten bolts to
specification. See TORQUE SPECIFICATIONS . Bleed brake system. See
BLEEDING BRAKE SYSTEM .
REAR BRAKE ROTOR
Removal & Installation
Raise and support vehicle. Remove rear caliper. See
REAR BRAKE CALIPER . Remove rotor. To install, reverse removal
procedure.
REAR BRAKE DRUM & SHOES
Removal
1) Raise and support vehicle. Remove wheels. Remove brake
drum from hub. If drum is difficult to remove, back-off shoe adjuster

and remove drum. Remove shoe return springs and shoe hold-down
springs. See Fig. 11.
2) Disconnect parking brake cable from lever. Remove brake
shoes and adjuster assembly. Remove parking brake lever snap ring, and
disengage lever from brake shoe.
Fig. 11: Exploded View Of Rear Drum Brake Assembly (Montero Sport
Shown, Others Similar)
Courtesy of Mitsubishi Motor Sales of America.
Installation
1) To install, reverse removal procedure. Apply Lubriplate to
shoe-to-backing plate bosses, adjuster assembly threads and parking
brake lever pin.
2) Adjust shoes to lightly contact brake drum. See REAR BRAKE
SHOES under ADJUSTMENTS. Depress brake pedal to center shoes, and
check pedal travel. Rotate brake drum to ensure free movement.