1997 ISUZU TFS SERIES brake pads

FRONT WHEEL DRIVE 4C1-55
Important Operations
1. Bolt
Shift the transfer lever to the “2H” position and move the
vehicle forward and rearward about one meter.
Remove the 14 mm hex bolts.
8. Hub Nut
Wrench : 5-8840-2117-0
(J-36827)
Refer to Section 5 “Brake” for disc brake
caliper removal procedure9. Hub and Disc Assembly
Before disassembly, remove the disc brake caliper assembly
and hang it on the frame with wires.
10.Outer Bearing and Outer Race
12.Inner Bearing and Outer Race
(1) Remove the outer bearing from the hub with fingers. The
inner bearing will remain in the hub and may be removed
after prying out the inner bearing lip seal assembly.
(2) Remove the outer race by driving out the race from the hub
with a brass drift inserted behind the race in the notches in
the hubs.
If necessary, replace the wheel pin in the following manner.
13.Bolt
(1) Apply a scribe mark to disc to hub.
(2) Clamp the hub and disc assembly in a vise using protective
pads and remove the 6 disc to hub retaining bolts.

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.

5-36 BRAKES
Thickness of Disc Pad
Thickness (t) mm(in)
Standard Limit
10.5 (0.413)
9.5 (0.374)
(For Australia only)1.0 (0.039)
Replace the front disc pad whenever the pad wear indicator
makes a squeaking noise or when the pad is worn to within 1
mm of the shoe table.
All four brake pads should be replaced together.
Seal and Boot
The dust seal, dust boot and ring seal are to be replaced each
time the caliper is overhauled.
Discard thee used rubber parts.

BRAKES 5-67
TROUBLESHOOTING
Condition and Cause Correction
Poor Brake Action
Master cylinder faulty Correct or replace
Power cylinder faulty Correct or replace
Level of brake fluid in reservoir too low Replenish and bleed
Air in hydraulic circuit Bleed
Front disc brake caliper faulty Clean or replace
Rear brake wheel cylinder faulty Clean or replace
Water or oil on brake pads or linings Clean or replace
Brake pads or linings hardened Replace
Brake pads or linings in poor contact with rotor or brake drum Correct
Brake pads or linings worn Replace
Brake disc or drum rusted Grind or replace
Check valve in vacuum hose faulty Correct or replace
Brake Squeak
Brake pads or linings worn Replace
Brake pads or linings hardened Replace
Brake pads or linings in poor contact with rotor or brake drum Correct
Brake disc(s) warped, worn or damaged Grind or replace
Disc brake anti-squeak shims fatigued Replace
Front hub bearings loose or preload is incorrect Adjust or replace
Brake disc or drum rusted Grind or replace
Brake Pull
Tire inflation pressures unequal Adjust
Front wheel alignment incorrect Adjust
Water or oil on brake pads or linings Clean or replace
Brake pads or linings hardened Replace
Brake pads or linings worn excessively Replace
Brake drum or rotor worn or scored Grind or replace
Front or rear wheel cylinder or disc brake caliper malfunctioning Clean or replace
Front hub bearing preload incorrect Adjust or replace
Brake pad or lining clearances unequal Adjust or replace
Brake Drag
Parking brake maladjusted Adjust
Brake pad or lining clearance insufficient Adjust
Brake pedal free play insufficient Adjust brake pedal height or power cylinder operating rod
Piston in master cylinder sticking Clean or replace
Pistons in disc brake caliper sticking Replace piston seals
Pistons in rear brake wheel cylinders sticking Clean or replace
Brake pads sticking in caliper Clean
Return springs weakened Replace
Parking brake binding Overhaul rear brakes
Front hub bearing preload incorrect Adjust or replace
Rear brake shoes not returning Correct or replace brake back plate, check automatic adjuster and
replace as necessary
Obstructions in hydraulic circuit Clean
Rotor warped excessively Grind or replace
Rear brake drum distorted Grind or replace
Piston cups swollen Replace brake fluid and piston cups
Check valve ; vacuum hose faulty Replace
Parking cable sticking Clean or replace
Rear disc brake over adjust Adjust or overhaul rear brakes
Excessive Brake Pedal Travel
Air in hydraulic circuit Bleed hydraulic circuit
Level of brake fluid in reservoir too low Replenish brake fluid reservoir to specified level and bleed hydraulic
circuit as necessary.
Master cylinder push rod clearance excessive Adjust
Leakage in hydraulic system Correct or replace defective parts
Rear disc brake autoadjuster malfunction Overhaul rear brakes