1998 ISUZU TROOPER Service Repair Manual

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Page 873 of 3573

ISUZU TROOPER 1998 Service Repair Manual 5B±1 ANTI±LOCK BRAKE SYSTEM
BRAKES
ANTI-LOCK BRAKE SYSTEM
CONTENTS
Service Precaution 5B±1. . . . . . . . . . . . . . . . . . . . . .
Electronic Hydraulic Control Unit 5B±2. . . . . . . . . .
El

5B±1 ANTI±LOCK BRAKE SYSTEM
BRAKES
ANTI-LOCK BRAKE SYSTEM
CONTENTS
Service Precaution 5B±1. . . . . . . . . . . . . . . . . . . . . .
Electronic Hydraulic Control Unit 5B±2. . . . . . . . . .
Electronic Hydraulic Control Unit and
Associated Parts 5B±2. . . . . . . . . . . . . . . . . . . . . .
Removal 5B±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5B±2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
G-Sensor 5B±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 5B±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 5B±3. . . . . . . . . . . . . . . . . .
Installation 5B±3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Wheel Speed Sensor 5B±4. . . . . . . . . . . . . . . Front Wheel Speed Sensor and
Associated Parts 5B±4. . . . . . . . . . . . . . . . . . . . . .
Removal 5B±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 5B±5. . . . . . . . . . . . . . . . . .
Installation 5B±5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Wheel Speed Sensor 5B±6. . . . . . . . . . . . . . .
Rear Wheel Speed Sensor and
Associated Parts 5B±6. . . . . . . . . . . . . . . . . . . . . .
Removal 5B±6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 5B±6. . . . . . . . . . . . . . . . . .
Installation 5B±6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: I F S O E Q U IPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM(SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING SERVICE
ON OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.CAUTION: Re place all components included in
repair kits used to service this system. Lubricate
rubber parts with clean, fresh brake fluid to ease
assembly. Do not use shop air with in±line
lubricators on brake parts, as damage to rubber
components may result. If any hydraulic component
is removed or brake line disconnected, it may be
necessary to bleed part or all of the brake system.
NOTE: The use of rubber hoses or parts other than those
furnished specifically for the Anti±lock Brake System may
lead to functional problems requiring major overhaul.

Page 874 of 3573

ISUZU TROOPER 1998 Service Repair Manual 5B±2ANTI±LOCK BRAKE SYSTEM
Electronic Hydraulic Control Unit
Electronic Hydraulic Control Unit and Associated Parts
350RW013
Legend
(1) Connector
(2) Hydraulic Unit ASM(3) Bolts
(4) Nut
(5) Bolt
Rem

Page 875 of 3573

ISUZU TROOPER 1998 Service Repair Manual 5B±3 ANTI±LOCK BRAKE SYSTEM
G-Sensor
Removal
350RX001
1. Remove center console.
Refer to Consoles in Body and Accessories
section.
2. Remove clip from G-sensor connector (1), then
disconnect connec

Page 876 of 3573

ISUZU TROOPER 1998 Service Repair Manual 5B±4ANTI±LOCK BRAKE SYSTEM
Front Wheel Speed Sensor
Front Wheel Speed Sensor and Associated Parts
350RW012
Legend
(1) Speed Sensor Connector
(2) Sensor Cable Fixing Bolt (Upper side)(3) Sensor Cable

Page 877 of 3573

ISUZU TROOPER 1998 Service Repair Manual 5B±5 ANTI±LOCK BRAKE SYSTEM
Inspection and Repair
1. Check the speed sensor pole piece for presence of
foreign materials; remove any dirt, etc.
2. Check the pole piece for damage; replace speed
sens

Page 878 of 3573

ISUZU TROOPER 1998 Service Repair Manual 5B±6ANTI±LOCK BRAKE SYSTEM
Rear Wheel Speed Sensor
Rear Wheel Speed Sensor and Associated Parts
350RW008
Legend
(1) Speed Sensor Connector
(2) Sensor Cable Fixing Bolt(3) Clip (11 pieces)
(4) Speed

Page 879 of 3573

ISUZU TROOPER 1998 Service Repair Manual POWER ASSISTED BRAKE SYSTEM 5C – 1
SECTION 5C
POWER ASSISTED BRAKE SYSTEM
CONTENTS
PAGE
Service Precaution ..........................................................................................

POWER ASSISTED BRAKE SYSTEM 5C – 1
SECTION 5C
POWER ASSISTED BRAKE SYSTEM
CONTENTS
PAGE
Service Precaution .............................................................................................................5C- 2
Brake System Diagnosis .................................................................................................... 5C- 3
Troubleshooting ................................................................................................................. 5C- 5
Main Data and Specifications ........................................................................................... 5C- 7
Service Standard ................................................................................................................ 5C- 8
Servicing ............................................................................................................................. 5C- 9
Fixing Torque ...................................................................................................................... 5C-18
Special Tools ....................................................................................................................... 5C-21
General Description ........................................................................................................... 5C-22
Master Cylinder .............................................................................................................. 5C-22
Vacuum Booster ..............................................................................................................5C-23
Disc Brakes ..................................................................................................................... 5C-24
On-Vehicle Service .............................................................................................................5C-25
Brake Hose Replacement .............................................................................................. 5C-25
Brake Pipe Replacement ............................................................................................... 5C-27
P & B Valve ..................................................................................................................... 5C-28
P & B Valve Replacement .............................................................................................. 5C-29
Load Sensing Proportioning Valve (LSPV) .................................................................. 5C-30
Brake Pedal Replacement ............................................................................................. 5C-34
Stoplight Switch Replacement..................................................................................... 5C-36
Fluid Reservoir Tank ...................................................................................................... 5C-38
Master Cylinder Assembly ............................................................................................ 5C-39
Vacuum Booster Assembly ........................................................................................... 5C-41
Exterior Components .................................................................................................... 5C-44

Page 880 of 3573

ISUZU TROOPER 1998 Service Repair Manual 5C – 2 POWER ASSISTED BRAKE SYSTEM
Front Disc Brakes ........................................................................................................... 5C-47
Brake Pads Replacement ........

5C – 2 POWER ASSISTED BRAKE SYSTEM
Front Disc Brakes ........................................................................................................... 5C-47
Brake Pads Replacement .......................................................................................... 5C-47
Caliper Replacement ................................................................................................. 5C-50
Rebuilding the Caliper ............................................................................................... 5C-53
Rear Disc Brakes ............................................................................................................ 5C-56
Brake Pads Replacement .......................................................................................... 5C-56
Caliper Replacement ................................................................................................. 5C-59
Rebuilding the Caliper ............................................................................................... 5C-62
Unit Repair .......................................................................................................................... 5C-65
Master Cylinder .............................................................................................................. 5C-65
Vacuum Booster ............................................................................................................. 5C-67
SERVICE PRECAUTION
WARNING:
IF SO EQUIPPED WITH A SUPPLEMENTAL RESTRAINT SYSTEM (SRS), REFER TO THE SRS COMPONENT
AND WIRING LOCATION VIEW IN ORDER TO DETERMINE WHETHER YOU ARE PERFORMING SERVICE ON
OR NEAR THE SRS COMPONENTS OR THE SRS WIRING. WHEN YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS WIRING, REFER TO THE SRS SERVICE INFORMATION.
FAILURE TO FOLLOW WARNINGS COULD RESULT IN POSSIBLE AIR BAG DEPLOYMENT, PERSONAL
INJURY, OR OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION:
Always use the correct fastener in the proper location. When you replace a fastener, use ONLY the exact
part number for that application. ISUZU will call out those fasteners that require a replacement after
removal. ISUZU will also call out the fasteners that require thread lockers or thread sealant. UNLESS
OTHERWISE SPECIFIED, do not use supplemental coatings (Paints, greases, or other corrosion inhibitors)
on threaded fasteners or fastener joint interfaces. Generally, such coatings adversely affect the fastener
torque and the joint clamping force, and may damage the fastener. When you install fasteners, use the
correct tightening sequence and specification. Following these instructions can help you avoid damage to
parts and systems.

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