brakes ISUZU TFS SERIES 1997 Owner's Guide

5-26 BRAKES
ADJUSTMENT PROCEDURE OF BRAKE PEDAL
The push rod serves as the brake pedal stopper when the
pedal is fully released.
Brake pedal height adjustment should be performed as follows.
Brake Pedal - Height
Measure the brake pedal height after making sure the pedal is
fully returned by the pedal return spring.
Note:
Pedal height (L2) must be measured after starting the
engine and increasing the revolution several times by
stepping on the accelerator pedal.
mm(in)
Pedal free play (L1) 6-10 (0.23 - 0.39)
LHD 174-184 (6.85-7.24)
RHD 193-203 (7.60 7.99)Height (L2)
Note:
Pedal free play must be measured after turning off the
engine and stepping on the brake pedal firmly five times or
more.
If the measured value deviates from the above range, adjust
the brake pedal as follows:
a) Disconnect the stop lamp switch.
b) Loosen the lock nut on the push rod.
c) Adjust the brake pedal to the specified height by rotating the
push rod in the appropriate direction.

BRAKES 5-27
Lock Nut Torque Nm(kgfm/lbft)
15- 25 (1.5 - 2.5 / 11 - 18)
d) Install the stop lamp switch.
Note:
Pedal height (L
2) must be 95 mm (3.7 in.) or more when
applying about 50 kg (110.25 lbs.) of stepping force.
Clearance
Between the Switch Housing and the Brake Pedal (A).
mm(in)
0.5 - 1.0 (0.02 - 0.04)

5-28 BRAKES
FRONT BRAKE ASSEMBLY
REMOVAL AND INSTALLATION
Removal Steps
1. Brake flexible hose
2. Lock bolt
3. Pad assembly with shim
4. Clip ; pad
5. Caliper assembly
6. Support bracket
7. Front hub and disc assembly
Installation Steps
7. Front hub and disc assembly
6. Support bracket
5. Caliper assembly
4. Clip ; pad
3. Pad assembly with shim
2. Lock bolt
1. Brake flexible hose
Important Operations - Removal
1. Brake Flexible hose
Remove the bolt and gasket and disconnect the brake flexible
hose from the caliper.
After disconnecting the flexible hose, cap or tape the openings
to prevent entry of foreign material.

BRAKES 5-29
2. Lock Bolt
Remove the lock bolt from the caliper.
3. Pad Assembly with Shim
Rotate the caliper upward.
Mark the lining locations if they are to be reinstalled.
6. Support Bracket
Take care not to damage the flexible brake hose when
removing the support bracket.
7. Front Hub and Disc Assembly
For the removal procedure, refer to Section 4C "FRONT
WHEEL DRIVE".

5-30 BRAKES
Important Operations - Installation
7. Front Hub and Disc Assembly
For the installation procedure, refer to the front hub and disc
reassembly procedure in Section 4C "FRONT WHEEL DRIVE".
6. Support Bracket
Torque N
m(kgfm/lbft)
139 - 171 (14.2 - 17.4 / 103 - 126)
Set up the clip and pad before installation of the support racket.
4. Clip ; Pad
Install new parts if necessary.
2. Lock Bolt
Torque N
m(kgfm/lbft)
27 - 37 (2.8 - 3.8 / 20 - 27)
1. Brake Flexible Hose
Attach the bolt and new gasket
Torque N
m(kgfm/lbft)
29 -39 (3.0 - 4.0 / 22 - 29)
After installation, bleeding and replenishing procedure must be
performed.
Wipe the circumference of the hose clean.
Note:
Always use new gaskets.
Be sure to put the hooked edge of the flexible hose end
into the anti-rotation cavity.

BRAKES 5-31
REMOVAL AND INSTALLATION OF DISC PAD
Removal Steps
1. Lock Bolt
Remove the lock bolt from the caliper.
Note:
Don't remove the brake hose from caliper when replacing
pads.
2. Rotate the Caliper Upward
Remove the caliper from the support bracket and ire the caliper
to the upper link or the frame.
Note:
While caliper is removed from support bracket, never step
on the brake pedal or the piston will protrude rapidly.
3. Pad Assembly with Shim
Remove the pad assembly with the shim.
Mark the pad locations if they are to be reinstalled.
4. Clip ; Pad
Discard the used clip and install a new one.

5-32 BRAKES
Installation Steps
1. Clip ; Pad
2. Pad Assembly with Shim
After attaching the pad assembly with the shim to the support
bracket, position the wear indicator to the lower side of the pad.
3. Caliper Assembly
Lower the caliper into its original position.
Do not damage the flexible hose by twisting or pulling it.
4. Lock Bolt
Attach the lock bolt to the caliper.
Torque N
m(kgfm/lbft)
27 - 37 (2.8 - 3.8 / 20 - 27)

BRAKES 5-33
DISASSEMBLY
CALIPER ASSEMBLY
Disassembly Steps
1. Sleeve
2. Dust boot ; sleeve
3. Dust boot ; guide pin
4. Bleeder with cap
5. Dust seal ring6. Dust seal ; piston
7. Piston (with seal ring)
8. Ring seal
9. Body ; caliper

5-34 BRAKES
Important Operations
5. Dust Seal Ring
Using a small screwdriver, remove the dust boot.
7. Piston (with Ring Seal)
Insert a block of wood into the caliper and force out the piston
by blowing compressed air into the caliper at the flexible hose
attachment.
This procedure must be done prior tor removal of dust seal.
CAUTION:
Do not place your fingers in front of the piston in an
attempt to catch or protect it when applying compressed
air.

BRAKES 5-35
INSPECTION AND REPAIR
Make necessary correction or parts replacement if wear damage or any other abnormal conditions are found
through inspection.
Rotor
Caliper body
Cylinder bore
Piston
Support bracket
Lock bolt
Guide pin
Visual Check
Inspect the following parts for wear, bending, distortion,
cracking, corrosion, or other abnormal conditions.
Rotor
Thickness (t) mm(in)
Standard Minimum
thickness after
refinishingReplacement
thickness
(Discard)
22.0(0.866) 20.97(0.826) 20.6(0.811)
Run out
Limit mm(in)
0.13 (0.005)
Before inspection, adjust the wheel bearing correctly.
Using a dial gauge, measure the run out at the center of disc
pad contact surface.
Parallelism (Total circumferential thickness variation)
Limit mm(in)
0.15 (0.0006)
Contact surface must be within 0.015 mm at the circumference
of 203 mm dia. Circle.