\003* B RAK E S YSTE M U NIF O RM IN SPEC TIO N G UID ELIN ES *
1 991 M it s u bis h i M onte ro
GENERAL INFORMATION
Brake Systems - Motorist Assurance Program
Standards For Automotive Repair
All Makes & Models
CONTENTS
OVERVIEW OF MOTORIST ASSURANCE PROGRAM
OVERVIEW OF SERVICE REQUIREMENTS AND SUGGESTIONS
ACCELEROMETERS (G SENSOR OR LATERAL)
ACCUMULATORS
ANCHOR PINS
ANTI-LOCK BRAKE SYSTEMS
BACKING PLATES
BRAKE FLUID
BRAKE FRICTION MATERIAL
BRAKE PADS
BRAKE PEDALS
BRAKE SHOES
BRAKE SHOE HARDWARE
BRAKE STOPLIGHT SWITCHES
BULB SOCKETS
BULBS AND LEDS
CALIPER HARDWARE
CALIPERS
CONTROLLERS
DIGITAL RATIO AXLE CONTROLLERS AND BUFFERS (DRAC AND DRAB)
DISABLE SWITCHES
DRUMS
ELECTRICAL PUMPS AND MOTORS
ELECTRONIC CONTROLLERS
FLUID
FLUID LEVEL SENSOR SWITCHES
FOUR WHEEL DRIVE SWITCHES
FRICTION MATERIAL
G SENSORS
HOSES
HYDRAULIC MODULATORS
HYDRO-BOOSTERS
HYDRO-ELECTRIC BOOSTERS (POWERMASTER)
IGNITION DISABLE SWITCHES
LATERAL ACCELERATION SWITCHES
LEDS
LENSES
MASTER CYLINDERS
MODULATORS
MOTORS
PARKING BRAKE SWITCHES
PARKING BRAKE SYSTEMS
PADS
PEDAL TRAVEL SWITCHES
PEDALS
POWERMASTER
PUMPS
PRESSURE DIFFERENTIAL SWITCHES
PRESSURE SWITCHES
RELAYS
ROTORS
SELF-ADJUSTING SYSTEMS
missing ................ C .. Require replacement of missing
parts.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
missing) ............... A ............ Require replacement.
(1) - Inoperative includes intermittent operation.
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PADS
See FRICTION MATERIAL .
PEDAL TRAVEL SWITCHES
See SWITCHES.
PEDALS
See BRAKE PEDALS.
POWERMASTER
See HYDRO-BOOSTERS .
PUMPS
See ELECTRICAL PUMPS AND MOTORS .
PRESSURE DIFFERENTIAL SWITCHES
See SWITCHES.
PRESSURE SWITCHES
See SWITCHES.
RELAYS
NOTE: Copied from Electrical UIGs
RELAY INSPECTION
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Housing broken .......... A ............ Require replacement.
Housing cracked ......... 2 ............ Suggest replacement.
Inoperative ( 1) ......... A ............ Require replacement.
Missing ................. C ............ Require replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned,
affecting performance .. A ........... ( 2) Require repair or
replacement.
Inlet Pressure Outlet Pressure
Application psi (kg/cm) psi (kg/cm)
2.6L
Test 1 ............ 853 (59) ......... 473-526 (33-37)
Test 2 ........... 1280 (88) ......... 672-757 (46-52)
3.0L
2-Door Model
Test 1 .......... 853 (59) ......... 473-526 (33-37)
Test 2 ......... 1565 (108) ........ 768-865 (54-60)
4-Door Model
Test 1 .......... 597 (41) ......... 569-626 (39-43)
Test 2 ......... 1377 (95) ......... 843-928 (58-64)
( 1) - Maximum side-to-side pressure differential
is 57 psi (4kg/cm
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REMOVAL & INSTALLATION
FRONT BRAKE PADS
CAUTION: DO NOT remove or contaminate special grease coating on lock
pins.
Removal
1) Raise and support vehicle. Remove front wheel(s). Remove
lower lock pin or sleeve bolt. See Fig. 6. Lift caliper body upward.
2) Support caliper using wire. Remove shim(s), shim holder
(if equipped), anti-squeak shim and pad assembly from support
mounting. Remove pad clips.
Installation
If installing new pads, compress piston to bottom of bore.
Install retaining clips, pad assembly, shim(s), shim holder (if
equipped) and anti-squeak shim onto support mounting.
Fig. 6: Exploded View of Front Disc Brake Assembly (Typical)
Courtesy of Chrysler Motors.
FRONT BRAKE CALIPER
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DRIV E A XLE - F R O NT
1991 M it s u bis h i M onte ro
1990-92 DRIVE AXLES
Differentials & Axle Shafts - Front
Montero, Pickup 4WD
DESCRIPTION
Front axle assembly consists of differential carrier, housing
tube, inner shaft and drive axles. A full-floating axle design is
used. Drive axles are flexible assemblies made up of inner and outer
CV joints. Birfield Joints (BJ) and Double Offset Joints (DOJ) are
used at opposite ends of each drive axle.
AXLE RATIO & IDENTIFICATION
Ratio is determined by dividing number of ring gear teeth by
number of drive pinion teeth.
AXLE RATIO SPECIFICATIONS
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Application Ratio
Montero ............................ 4.63:1
Pickup ............................. 4.22:1
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NOTE: References to BJ refer to Birfield Joint and DOJ to Double
Offset Joint.
TESTING
TOTAL ASSEMBLY BACKLASH
Place transfer case in "4H" position. Raise and support
vehicle. Check total backlash at flange. If backlash at flange exceeds
.55" (14.0 mm), check assembly for wear and proper adjustment.
DRIVE AXLES R & I
REMOVAL
1) Remove undercover on Montero. Place hub in free-wheeling
position. Place transfer case in 2H position. Remove drive hub cover,
snap ring and shim from drive axle. Remove brake calipers and wire out
of way.
2) Using dial indicator, check drive axle end play. Rotate
drive axle forward and rearward until maximum end play is obtained.
End play must be adjusted during reassembly if not within .008-.020"
(.20-.50 mm). Disconnect tie rod assembly. Support lower control arm
with jack.
3) Separate ball joints from knuckle. Remove knuckle and
front hub assembly. Remove left drive axle from differential carrier.
Use care not to damage oil seal. On right drive axle, remove drive
axle-to-inner shaft retaining bolts. Remove right drive axle.
CAUTION: Support lower control arm during drive axle removal and
installation.
CAUTION: Always replace circlips on BJ splines of left drive axle
and splines of inner shaft.
INSTALLATION
1) Install right drive axle on inner shaft. Install new
circlip on BJ side of left drive axle. Drive left drive axle into
differential. Use care not to damage oil seal.
2) Reinstall knuckle with front hub assembly. If drive axle
end play requires adjustment, select proper shim to obtain proper end
play. Shim is located behind snap ring on end of drive axle. Install
shim and recheck axle end play. Install remaining components in
reverse of removal procedure.
DIFFERENTIAL CARRIER R & I
REMOVAL
1) Raise and support vehicle. Drain gear oil. Support
differential carrier. Remove drive axles and inner shaft. See DRIVE
AXLES R & I and INNER SHAFT & BEARING R & I in this article. Place
alignment mark on drive shaft and pinion 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 flange.
Fig. 1: Front Drive Axle & Suspension
Courtesy of Chrysler Motors.
INNER SHAFT & BEARING R & I
REMOVAL
1) Remove right drive axle. See DRIVE AXLES R & I in this
article. Remove inner shaft from differential carrier. Pry dust seal
from housing tube assembly using a screwdriver if replacement is
required. See Fig. 1.
2) If oil seal replacement is required, remove housing tube.
Using slide hammer, remove oil seals. Bend outer area of dust cover
inward on inner shaft. Press bearing from shaft. Remove dust cover
from shaft.
INSPECTION
Inspect inner shaft for damaged splines or threads. Inspect
bearing for roughness or damage. Measure shaft O.D. Replace shaft if
not within specification. See INNER SHAFT SPECIFICATIONS table.