Lead ISUZU TF SERIES 2004 User Guide

BRAKES 5C-9
MAIN DATA AND SPECIFICATIONS
FRONT DISC BRAKE mm(in.) 4

2 4

4, 4

2 HIGH RIDE
Caliper type Pin slide
Disc outside diameter 256(10.079) 280 (11.023)
Disc thickness 26(1.024) 27 (1.063)
Piston diameter 42.8 (1.685)

2 45.5 (1.79)
Adjustment method Self-adjusting
REAR DRUM BRAKE mm(in.) 4

2 4

4
Type Leading and Trailing
Drum inside diameter 254(10.008) 295 (11.614)
Brake lining dimension 244

50

5 283

45

5
(Length
Width
Thickness) (9.57
1.97
0.20) (11.14
1.77
0.20)
Adjustment method Self-adjusting
WHEEL CYLINDER mm(in.)
Inside diameter : rear 25.4 (1.000) 23.8 (0.937)
MASTER CYLINDER mm(in.)
Type Split
Bore diameter 25.4 (1.000)
Piston stroke (Primary + Secondary) 21.8 + 12 (0.86 + 0.47)
VACUUM SERVO mm(in.) 6VE1/C24NE 4JA1-T/4JA1-TC/4JH1-TC
Diaphragm diameter 205(8.077) + 230(9.055) 180(7.087) + 205(8.077)
4JA1-T
Power cylinder stroke 35 (1.378)
PEDAL RATIO 3.7
BALANCE EBD (with ABS)
Type Load sensing proportioning valve (without ABS)
Blend valve (without ABS)

BRAKES 5C-23

RTW35CSH001301

4) Failure on front master cylinder.
In case of failure on front master cylinder the pressure on
the inlet port (C) drop to zero. The pressure from inlet por
t
(A) acts on the bypass piston (2) and move it by comprising
of bypass spring (3). It makes possible the communication
between the inlet port (A) to outlet port (B) through the
bypass system. The outlet pressure (B) reaches the inle
t
pressure (A) and the LSPV is bypassed.


Valve Maintenance
In the case to fluid lead or other a abnormalities, faulty valve
should be replaced.
Note:
The load sensing proportioning valve is not repairable and
must be replaced as a completed assembly.


LOAD SENSING PROPORTIONING
VALVE (LSPV) ADJUSTMENT
RTW35CSH000301

1. Fluid Pressure Measurement
1) Rear axle weight adjustment
With an axle eight meter, adjust the rear axle weight with
a person sitting in the driver’s seat and a weight loaded
in the rear body.
N (kg/lb)

MODEL Adjustment value
4

2 7845 (800/1764)
4
2 HIGH RIDE
4

4 9316 (950/2095)

RTW35CSH000101





2) Installation of a fluid pressure gauge
Remove the air bleeder of the left hand wheel front and
rear brakes. Bleed air out of the fluid pressure gauge
with the measurement hose of the fluid pressure gauge
installed.
Pressure Tester: Brake oil (Fluid pressure gauge)
5-8840-2190-0

5C-44 BRAKES
REAR DRUM BRAKE ASSEMBLY
DISASSEMBLY

First, disassemble the brake drum. Then disassemble the rear brake assembly.
Refer to the “REAR AXLE ” section for the brake drum disassembly procedure.

RTW35CMF000201

MAJOR COMPONENTS
Disassembly Steps

1. Spring ; adjuster
2. Ring ; Adjuster lever
3. Lever ; adjuster

4. Spring ; Shoe hold
5. Pin ; Shoe hold

6. Spring ; Shoe to shoe, lower
7. Adjuster assembly
8. Spring ; shoe to shoe, upper
9. Shoe ; leading

10. Shoe ; trailing
11. Spring ; lever return
12. Retainer
13. Washer ; lever
14. Lever ; parking
15. Bolt ; wheel cylinder
16. Wheel cylinder assembly
17. Cover
18. Back plate

MINOR COMPONENTS
Disassembly Steps
Wheel Cylinder Assembly (14)

19. Piston
20. Cup
21. Boot ; piston

22. Return spring
23. Bleeder
24. Cap ; bleeder

BRAKES 5C-47
REASSEMBLY

RTW35CMF000301

MINOR COMPONENTS
Reassembly Steps
Wheel cylinder Assembly (7)

1. Piston assembly
2. Cup ; piston
3. Return spring



4. Boot ; piston

5. Bleeder
6. Cap ; bleeder

MAJOR COMPONENTS
Reassembly Steps

7. Back plate
8. Cover

9. Wheel cylinder assembly

10. Bolt ; wheel cylinder

11. Shoe ; leading

12. Lever ; parking

13. Washer ; lever

14. Retainer
15. Spring ; lever return



16. Shoe ; trailing

17. Spring ; shoe to shoe, upper

18. Adjust assembly
19. Spring ; shoe to shoe ; lower

20. Lever ; adjuster

21. Ring ; Adjuster lever
22. Spring ; shoe hold

23. Pin ; shoe hold

24. spring ; adjuster

BRAKES 5C-49
308R300008







11. Shoe ; leading

Be sure to use new spring; shoe hold.
12. Lever ; parking
13. Washer ; lever
14. Retainer
Install the lever, the washer and the retainer to the leading
brake shoe.



Apply grease to the sliding surfaces of the lever and
brake shoe.

Be sure to use new retainer and washer.
305R300009



















16. Shoe ; trailing


Be sure to use new spring; shoe hold.
17. Spring ; shoe to shoe, upper
18. Adjuster assembly
1. Apply grease to each of the parts shown in the
illustration before installing the brake shoe.

Lever; adjuster-shoe

Adjuster-shoe



2. Clean the adjuster bolt (5) and the adjuster rods (1) (4).
Apply grease to the threaded portion of the adjuster bolt.
3. Install the adjuster rod to the adjuster bolt.
4.
Apply grease to the adjuster asm ends (2) (3). Set the
spring ; upper to the adjuster asm, then install them to
the brake shoe.

305R300010











5. Before setting the brake shoes, apply grease to the back
plate portions (1) contacting the brake shoe edge as
shown in the illustration.
6.
Apply grease to the wheel cylinder parts contacting the
brake shoe (2).
7. Install the brake shoe.
Note :


Be careful not to damage the wheel cylinder dust cover.


Do not allow the wheel cylinder piston to fly free.

PARKING BRAKE SYSTEM 5D-1

SECTION 5D
BRAKES
PARKING BRAKE SYSTEM
CONTENTS

Service Precaution .......................................... 5D-1
Service Precaution ....................................... 5D-1
General Description ...................................... 5D-1
Parking Brake Lever ........................................ 5D-2
Parking Brake Lever Assembly and
Associated Parts (Bench Seat) .................. 5D-2
Removal ....................................................... 5D-3
Installation............................................................
5D-3
Front Parking Brake Cable....................................
5D-5
Front Parking Brake Cable and Associated
Parts (Bench Seat).........................................
5D-5
Removal...............................................................
5D-6
Installation............................................................
5D-6
Parking Brake Lever...............................................
5D-8
Parking Brake Lever Assembly and Associated
Parts (Buckle Seat)....................................... 5D-8
Removal ....................................................... 5D-8
Installation .................................................... 5D-8
Parking Brake Rear Cable ............................... 5D-9
Parking Brake Rear Cable and Associated
Parts ............................................................ 5D-9
Removal ....................................................... 5D-10
Installation .................................................... 5D-10
Inspection and Repair ................................... 5D-11
Parking Brake Adjustment ............................ 5D-11
Main Data and Specifications........................... 5D-12
Troubleshooting ............................................ 5D-13


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, REFE
R
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, o
r
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/leve
r
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 the "ON" position, the brake warning
light illuminates. The rear wheel parking brake is a
leading-trailing brake (mechanical inside expansion
type) built in the rear drum brake. Parking brake
adjustment is made through the adjusting hole (bored
through back plate). Parking brake lever stroke should
be adjusted to 8

14 notches with 30kg (bench seat) o
r
6

8 notches with 30kg (bucket seat). Refer to “Parking
Brake Adjustment" in this section.

5D-12 PARKING BRAKE SYSTEM

Main Data and Specifications
General Specifications


Model
Type
Leading-Trailing
Drum inside diameter
254 mm (10 in) or 295 mm (11.6 in)
Parking brake lever stroke
6

8 notches (bucket seat) or 8

14 notches (bench seat)
When pulled with a force of 294 N (30 kg/66 lb)

CAB 10-3



Important Operations - Removal
3. Room Mirror
Remove the screw and pull the room mirror to upper side.


8. Windshield Glass
Remove the windshield glass, carefully following the steps
listed below:
1) Use a knife to cut through part of the adhesive caulking
material.
2) Secure one end of a piece of steel piano wire (0.02 inches
in diameter) to a piece of wood that can serve as a handle.
3) Use a pair of needle nose pliers to insert the other end o
f
the piano wire through the adhesive caulking material at the
edge of the windshield glass.
4) Secure the other end of the piano wire to another piece o
f
wood.




5) With the aid of an assistant, carefully move the piano wire
with a sawing motion to cut through the adhesive caulking
material around the entire circumference of the windshield
glass.
6) Lift the windshield from the body.
7) Clean any remaining adhesive caulking material from the
area of the body which holds the windshield.
8) Use a soft rag and unleaded gasoline to wipe off an
y
adhesive remaining on the windshield glass.

CAB 10-5



Important Operations - Installation
1. Engine Hood Rear Seal
Install the engine hood rear seal as shown in the illustration.
1 : Seal
2 : Clip
3 : Rear (windshield glass side)
4 : Front

RTW3A0SH000201

3. Windshield Glass
1) Clean the windshield glass bonding surface.
2) Use a soft rag and unleaded gasoline to wipe off an
y
adhesive remaining on the body.
3) Mount the body window glass as shown in the illustration.
Attach spacers at five locations.


Always use new spacer.
4) Install the windshield upper molding.


Peel off the tear-away paper from the windshield uppe
r
molding, and start applying it with one end of the glass
and cut away the surplus at the other end of the glass
for length adjustment.


Always use new upper molding.
5) Temporary install the windshield support.



6) Apply primer
1 Sunstar #435-98 or equivalent to the body
side bonding surface. The primer should extend at least 25
mm (1 in).
Apply primer Sunstar #435-40 or equivalent to the
windshield glass side bonding surface.
The primer should extend 16.5 mm (0.6 in) and 25 mm (1.0
in) from end of the glass.

10-6 CAB




7) Apply the window glass sealing adhesive
2.
If you are using an air gun, air pressure should be
maintained at 147 - 294 kpa.
After drying primer completely, apply a sealing adhesive
(Sunstar #557 or equivalent) along the edge of the glass so
that the sealing adhesive has a 20 mm (0.79 in) junction a
t
middle of the vase of the glass.
Note :
Open time (1 min. or more) should be set after application
of the primer.
Bonding shall be done within 5 minutes after the sealing
adhesive has been applied.




8) Adjust the setting of the windshield glass with suction discs.
Set the windshield with sealing adhesive applied to entire
circumference in the body panel. Specifically, adjus
t
windshield support with the upper molding making contact
with the body panel, press the glass, and tighten the
windshield support.



9) Use unleaded gasoline and a soft cloth to wipe away any
excess adhesive.
Cure the bonding at a temperature of 68
- 86
F (20
-
30
C) for twenty-four hours.
Check that the windshield does not leak water.









8. Wiper Arm Assembly


Set the wiper arm/blade so that the tips of both blades
are positioned the specified value of
A and Bfrom the
upper edge of the cowl cover as shown in the figure.

A 40 mm (1.57 in)

B 52 mm (2.05 in)


Tighten the wiper arm assembly fixing nuts to the
specified torque.
Torque Nm (kgfm/lbft)
31 (3.1/23)