parking brake ISUZU AXIOM 2002 Service Owner's Guide

5C±114
POWER±ASSISTED BRAKE SYSTEM
8. Install adjuster assembly (12).
9. Install hold-down pin (15) and hold-down spring and
cups (4).
10. Install lower return spring (5).

Use brake spring tool.
11. Install auto adjuster lever (10).
12. Install upper (outer) return spring (6).

Use brake spring tool.
13. Install brake drum (2).

Adjust the brakes, refer to the
Drum Brake
Adjustment
in this section.
14. Install wheel and tire assembly (1).

Refer to
Wheels and Tires in wheel and Tire System
section.
Drum Brake Adjustment (4y2 Model)
NOTE: All brakes are self-adjusting. Brakes are adjusted
by repeated stepping on the brake pedal. (After stepping
on the pedal and releasing it, the rear auto adjuster, in the
rear brake, produces a clicking sound.
The same operation should be repeated until the sound
disappears.)
Take the following steps after overhauling the rear brake
assembly.
1. Move the parking brake handle to its fully released
position.
2. Parking cable must be loosened sufficiently. (Loosen
the adjust nut and the lock nut.)
3. Repeat stepping on the brake pedal firmly, and
releasing it until the clicking sound can no longer be
heard.
If the difference between the brake drum inside
diameter and diameter of the brake shoes is adjusted
to be 0,5 mm, the number of times for depressing the
brake pedal can be reduced.
4. Remove the drum. Measure the brake drum inside
diameter and diameter of the brake shoes.
Shoe clearance: 0.25-0.4 mm (0.0098-0.0157 in)
If incorrect, check the brake auto-adjusting system.
5. Rotate the adjust nut until all slack disappears from
the cable. Set the adjust nut.
6. Applying about 30 kg (66 lb) of force, pull the parking
brake handle to its fully set position three or four
times.
7. If the parking brake is properly adjusted, the travel
between the fully disengaged position and the fully
engaged position will be between 9 and 11 notches.
If the traveling range is not within these limits, again
repeat steps 1 through 5.
After adjusting has been done, check to see if the rear
wheel rotates smoothly without drag when turned by
hand.
Servicing The Brake Drum
Whenever the brake drums are removed, they should be
thoroughly cleaned and inspected for cracks, scores,
deep grooves and out-of-round.
Cracked, Scored or Grooved Drum
A cracked drum is unsafe and must be replaced.
Do not attempt to weld a cracked drum.
Smooth any slight scores. Heavy or extensive scoring will
cause excessive brake lining wear, and it will probably be
necessary to machine the drum braking surface.
If the brake linings are slightly worn and the drum is
grooved, the drum should be polished with fine emery
cloth but should not be machined. At this stage,
eliminating all the grooves in the drum and smoothing the
ridges on the lining would require the removal of too much
metal and lining. If left alone, the grooves and ridges
match and satisfactory service can be obtained. If brake
linings are to be replaced, a grooved drum should be
machined. Using a grooved drum with new linings will
create inefficient braking performance and cause the
linings to wear quicker.
Out-Of-Round Drum
An out-of-round drum makes accurate brake shoe
adjustment impossible and is likely to cause excessive
wear to other parts of the brake mechanism due to its
eccentric action. An out-of-round drum can also cause
severe and irregular tire tread wear as well as a pulsing
brake pedal. When the braking surface of a brake drum
exceeds the specification limit of 0.15 mm (0.006 in) in
out-of-round, the drum should be machined to true up the
braking surface. Out-of-round can be accurately
measured with an inside micrometer fitted with proper
extension rods. When measuring a drum for out-of-round
and wear, take measurements at the open and closed
edges of machines surfaces and at right angles to each
other.
Maximum out-of-round: 0.15 mm (0.006 in)
420RS034

5D1±1
PARKING BRAKE SYSTEM (4x4 Model)
AXIOM
BRAKES
PARKING BRAKE SYSTEM (4y4 Model)
CONTENTS
Service Precaution 5D1±1. . . . . . . . . . . . . . . . . . . . . .
General Description 5D1±1. . . . . . . . . . . . . . . . . . . . .
Operation 5D1±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking Brake Lever and Front Cable 5D1±3. . . . . .
Parking Brake Lever Assembly and
Associated Parts 5D1±3. . . . . . . . . . . . . . . . . . . . . .
Removal 5D1±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5D1±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . Parking Brake Rear Cable 5D1±4. . . . . . . . . . . . . . . .
Parking Brake Rear Cable and Associated
Parts 5D1±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 5D1±5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5D1±5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 5D1±6. . . . . . . . . . . . . . . . . .
Parking Brake Adjustment 5D1±6. . . . . . . . . . . . . . . .
Main Data and Specifications 5D1±7. . . . . . . . . . . . .
Service Precaution
WARNING: THIS VEHICLE HAS 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
fasteners joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fasteners.
When you install fasteners, use the correct
tightening sequence and specifications. Following
these instructions can help you avoid damage to
parts and systems.
General Description
Pulling up the parking brake lever by hand will set the
parking brake. By means of a ratchet type lock, the lever
can be held in that position until it is released. The position
of the lever is transmitted through cable/lever systems to
the rear wheels. These parts are designed to obtain
sufficient braking force even when parking on slopes.
When the parking brake is set, or when the ignition SW is
in theªONº position, the brake warning light illuminates.
The rear wheel parking brake is a duo±servo brake
(mechanical inside expansion type) built in the rear disc
brake. Parking brake adjustment is made through the
adjusting hole (bored through back plate). Parking brake
lever stroke should be adjusted to 6±8 notches. Refer to
Parking Brake Adjustment in this section.

5D1±2
PARKING BRAKE SYSTEM (4x4 Model)
Operation
When pulled in the direction ªAº, the parking lever presses
the secondary shoe against the brake drum using the
lever/shoe joint ªBº as a fulcrum and pushes the strut in
the direction ªCº. The strut ,in turn, presses the primary
shoe against the brake drum. Counter force ªDº to the
primary shoe is transmitted again to the secondary shoe
through the fulcrum ªBº. The secondary shoe contacts the
drum thereby producing braking effect. Clearance which
may result from worn parking brake shoe lining can be
adjusted by turning the adjusting screw. Refer to
Parking
Brake Adjustment
in this Section.
A05RS002
Legend
(1) Direction ªAº
(2) Lever/Shoe Joint ªBº as a fulcrum
(3) Direction ªCº
(4) Counter Force ªDº
(5) Parking Lever
(6) Secondary Shoe
(7) Adjusting Screw Notch(8) Parking Cable Guide
(9) Primary Shoe
(10) Strut
(11) Shoe Expanding Direction
(12) Parking Brake Cable Guide
(13) Adjusting Hole Plug
(14) Adjusting Screw Notch

5D1±3
PARKING BRAKE SYSTEM (4x4 Model)
Parking Brake Lever and Front Cable
Parking Brake Lever Assembly and Associated Parts
311R200001
Legend
(1) Rear Console
(2) Switch Connector
(3) Bolt
(4) Adjust Nut and Lock Nut(5) Trunnion Pin
(6) Equalizer
(7) Parking Brake Rear Cable
(8) Parking Brake Lever
Removal
1. Remove rear console (1).

Refer to
Body and Accessories section in this
manual.
2. Disconnect switch connector (2).
3. Remove bolt (3).
4. Remove adjust nut and lock nut (4).
5. Pull out equalizer (6) from trunnion pin (5).
6. Disconnect trunnion pin (5) from Parking brake lever
(8).
7. Disconnect parking brake rear cable (7).
Installation
1. Apply grease (BESCO L±2 or equivalent) to the
connecting portion of the rear cable (7) and equalizer
(6).
2. Connect parking brake rear cable (7) to equalizer
3. Install trunnion pin (5) to parking brake lever (8).
4. Insert equalizer (6) into trunnion pin (5) and tighten
adjust nut and lock nut (4).

To adjust the parking brake lever, see ªParking
Brake Adjustmentº in this section.
Lock Nut Torque: 13 N´m (113 lb in)
5. Tighten the parking brake lever fixing bolt (3) to the
specified torque.
Torque: 15 N´m (11 lb ft)
6. Connect switch connector (2).
7. Install rear console (1).

Refer to
Body and Accessories section in this
manual.

5D1±4
PARKING BRAKE SYSTEM (4x4 Model)
Parking Brake Rear Cable
Parking Brake Rear Cable and Associated Parts
311RY00004
Legend
(1) Rear Wheels
(2) Caliper Assembly
(3) Rotor (Drum)
(4) Holding Spring
(5) Upper Return Spring
(6) Lower Return Spring
(7) Shoe Assembly(8) Cable Fixing Bolt
(9) Bolt
(10) Bolt
(11) Bolt (Only Long Wheel Base Model)
(12) Nut
(13) Nut
(14) Retainer
(15) Rear Cable

5D1±5
PARKING BRAKE SYSTEM (4x4 Model)
Removal
1. Remove rear wheels (1).
2. Remove 2 bolts to remove the caliper assembly (2)
from the support bracket. Refer to
ªRear Disc Brakesº
in Power Assisted Brake System
section. Temporarily
hang the caliper with wire etc.
3. Remove rotor (drum) (3).
4. Remove holding spring (4), upper return spring (5)
and lower return spring (6).
5. Previously remove the rear cable from the parking
brake lever, then remove the brake shoe assembly
(7).
308RW004
Legend
(1) Parking Brake Lever
6. Remove cable fixing bolt (8) and bolt (9) (10) (11).
7. Remove nut (12).
8. Remove nut (13) and retainer (14).
9. Remove rear cable (15).
Installation
1. Apply grease (BESCO L±2 or equivalent) to the
connecting portion of the rear cable and equalizer.
Install rear cable (15).
2. Install retainer (14).

Tighten nut (13) to the specified torque.
Torque: 41N´m (30lb ft)
3. Tighten nut (12) to the specified torque.
Torque: 15N´m (11lb ft)
4. Tighten bolt (11) (10) (9) to the specified torque.
Torque: 6.5N´m (57lb in)

To adjust the parking brake, refer to
Parking Brake
Adjustment
in this section.
5. Tighten the cable fixing bolt (8) to the specified
Torque: 6.5N´m (57lb in)6. Install shoe assembly (7).
After installation of the shoe and cable assembly,
apply special grease (included in the repair kit) to the
following portions indicated in the figure.
308RS005
7. Install lower return spring (6) and upper return spring
(5).
The parking brake lever side (secondary side) return
spring must be installed on the outer side of the
primary side return spring.
308RS003
Legend
(1) Outer Side
(2) Parking Lever
8. Install holding spring (4).
9. Install rotor (drum) (3).
10. Install caliper assembly (2).
11. Install rear wheels (1).

5D1±6
PARKING BRAKE SYSTEM (4x4 Model)
Inspection and Repair
Parking Brake Lining Inspection
Check the shoe assemblies for wear by removing the
brake drum.
Replace the shoe assemblies if the lining thickness is less
than 1.0 mm (0.039 in).
Minimum limit: 1.0 m (0.039 in)
308RS004
Parking Brake Rotor (Drum) Inspection
Refer to ªRear Disc Brakesº in Power-Assisted Brake
System
section for inspection procedure of the rotor
(drum).
Parking Brake Adjustment
1. Prior to lever stroke adjustment, adjust rear brake
shoe/rotor (drum) gap. Perform this procedure with
loosening the adjust nut of the hand brake lever.
2. Remove the adjusting hole plug (rubber) and turn the
shoe adjusting screw downward with a small
screwdriver so that shoes will expand until they get
into close touch with the rotor. (Turn down the
adjusting screw notch by notch until the rotor does not
turn.)
3. Turn the adjusting screw in the opposite direction
(upward) until the rotor can be turned lightly. Standard
number of notches to turn upward: 7 or 8 notches
Turn the rotor and make sure that there is no brake
dragging.
4. After the rear brake shoe/rotor (drum) gap has been
adjusted, perform parking brake cable adjustment.
5. Turn the adjusting nut so that the parking brake lever
travels 6±8 notches when pulled up with a force of 30
kg (66 lb).
6. Make sure there is no brake dragging. Then tighten
the cable lock nut
Torque : 13 N´m (113 lb in)7. When poor braking effect possibly resulting from
insufficient break±in is felt, or just after replacement
of parking brake shoe, be sure to conduct break±in as
follows:
8. Forward 50 km/h (30 mph) y 400 m (About 30
seconds) with a lever pull force of 15 kg (33 lb).
9. Backward 10 km/h (6 mph) y 50 m (About 18
seconds) with a lever pull force of 15 kg (33 lb).
NOTE: Break±in procedures must be performed under
safe conditions and traffic rules.

If braking effect still remains poor after the above
break±in, wait for some time until parking brake shoe
cools down and repeat the procedures 8. and 9. noted
above.

On completion of break±in, inspect parking brake
lever stroke, and if the lever does not come within the
specified number of notches when pulled up,
readjust.

Excessive break±in may cause premature wear of
the parking brake lining.

5D1±7
PARKING BRAKE SYSTEM (4x4 Model)
Main Data and Specifications
General Specifications
Model
TypeDuo±servo
Drum inside diameter210 mm(8.27 in)
Parking brake lever stroke6±8 notches
When pulled with a force of 30 kg (66 lb)
Torque Specifications
311R200002

PARKING BRAKE SYSTEM (4X2 Model)
5D2±1
AXIOM
BRAKES
PARKING BRAKE SYSTEM (4y2 Model)
CONTENTS
Service Precaution 5D2±1. . . . . . . . . . . . . . . . . . . . . .
General Description 5D2±1. . . . . . . . . . . . . . . . . . . . .
Parking Brake Lever 5D2±2. . . . . . . . . . . . . . . . . . . . .
Parking Brake Lever Assembly and
Associated Parts 5D2±2. . . . . . . . . . . . . . . . . . . . . .
Removal 5D2±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5D2±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . Parking Brake Rear Cable 5D2±3. . . . . . . . . . . . . . . .
Parking Brake Rear Cable and Associated
Parts 5D2±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 5D2±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5D2±4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking Brake Adjustment 5D2±4. . . . . . . . . . . . . . . .
Main Data and Specifications 5D2±5. . . . . . . . . . . . .
Service Precaution
WARNING: THIS VEHICLE HAS 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.
General Description
Pulling up the parking brake lever by hand will set the
parking brake. By means of a ratchet type lock, the lever
can be held in that position until it is released. The position
of the lever is transmitted through cable/lever systems to
the rear wheels. These parts are designed to obtain
sufficient braking force even when parking on slopes.
When the parking brake is set, or when the ignition SW is
in theªONº position, the brake warning light illuminates.
The rear wheel parking brake is a leading/trailing brake
(mechanical inside expansion type). Parking brake
adjustment is made through the adjusting hole (bored
through back plate). Parking brake lever stroke should be
adjusted to 6 notches. Refer to
Parking Brake Adjustment
in this section.

5D2±2
PARKING BRAKE SYSTEM (4X2 Model)
Parking Brake Lever
Parking Brake Lever Assembly and Associated Parts
311R200001
Legend
(1) Rear Console
(2) Switch Connector
(3) Bolt
(4) Adjust Nut and Lock Nut(5) Trunnion Pin
(6) Equalizer
(7) Parking Brake Rear Cable
(8) Parking Brake Lever
Removal
1. Remove rear console (1).

Refer to
Body and Accessories section in this
manual.
2. Disconnect switch connector (2).
3. Remove bolt (3).
4. Remove adjust nut and lock nut (4).
5. Pull out equalizer (6) from trunnion pin (5).
6. Disconnect trunnion pin (5) from parking brake lever
(8).
7. Disconnect parking brake rear cable (7).
Installation
1. Apply grease (BESCO L±2 or equivalent) to the
connecting portion of the rear cable (7) and equalizer
(8).
2. Connect parking brake rear cable (7) to equalizer (6).
3. Install trunnion pin (5) to parking brake lever (8).
4. Insert equalizer (6) into trunnion pin (5) and tighten
adjust nut and lock nut (4).

To adjust the parking brake lever, see ªParking
Brake Adjustmentº in this section.
Lock Nut Torque: 13 N´m (113 lb in)
5. Tighten parking lever fixing bolt (3) to the specified
torque.
Torque: 15 N´m (11 lb ft)
6. Connect switch connector (2).
7. Install rear console (1).

Refer to
Body and Accessories section in this
manual.