1997 ISUZU TFS SERIES flat tire

FRONT WHEEL DRIVE 4C1-81
42 Model
1. WANDERS AND PULLS
Checkpoint Trouble Cause Countermeasure
Adjust the wheel bearing
preloadToo tight NG
SuspensionTighten or replace
Replace or adjust the inflation
Adjust the steering gear out of
adjustment or replace
Adjust the front alignment
Front or rear suspension parts
loose or broken
TireW orn or improperly inflated
Incorrect or broken
Front alignmentIncorrect
Steering linkage
Steering gear out of
adjustment
Tighten or replaceLoose or worn
OK
NG NG NG NG NG
OK OK
OK
OK
W heel bearing preload

4C1-82 FRONT WHEEL DRIVE
2. FRONT WHEEL SHIMMY
Checkpoint Trouble Cause Countermeasure
Ball joint or bush
Shimmy damper
Replace the ball joint or bush
Replace the shimmy damper
Worn
Worn
Front alignmentAdjust the front alignment
Adjust or replace
Incorrect
W orn or improperly adjusted
OK
OKNG NG NG NG
OK OKW heel bearing
Shock absorber
Steering gear out of
adjustment
Replace the shock absorber
Tighten or replace
Worn
Incorrect or broken
TireReplace or adjust the inflation
Tighten or replace
W orn or improperly inflated
Loose or worn
OK
NG NG NG NO
OK OKSteering linkage

4C1-86 FRONT WHEEL DRIVE
6. FRONT WHEEL SHIMMY
Checkpoint Trouble Cause Countermeasure
Ball joint or bush
Shimmy damper
Replace the ball joint or bush
Replace the shimmy damper
Worn
Worn
Front alignmentAdjust the front alignment
Adjust or replace
Incorrect
W orn or improperly adjusted
OK
OKNG NG NG NG
OK OKW heel bearing
Shock absorber
Steering gear out of
adjustment
Replace the shock absorber
Tighten or replace
Worn
Incorrect or broken
TireReplace or adjust the inflation
Tighten or replace
W orn or improperly inflated
Loose or worn
OK
NG NG NG NO
OK OKSteering linkage

5-62 BRAKES
Important Operations - Disassembly
2. Cable ; Front
Manually release the lever ratchet and depress the stem until
the cable attachment at the lower end of the stem is visible.
Remove the cable from the stem lower end.
3. Switch Actuating Pin
Align the parking brake switch actuating pin with the hole in the
housing.
Using a flat head punch, drive out the pin.
Important Operations - Reassembly
6. Pole
4. Stem
Before reassembly, apply chassis grease to the arrowed
portion in the left figures.
2. Cable ; Front
Before reassembly, apply chassis grease to the entire inside
surface of the cable boot (arrowed in the left figure)fully.

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

7C-20 CLUTCH
INSPECTION AND REPAIR
Make the necessary adjustments, repairs, and part replacements if excessive wear or damage is discovered during
inspection.
PRESSURE PLATE ASSEMBLY
Visually inspect the pressure plate friction surface for
excessive wear and heat cracks.
If excessive wear or deep heat cracks are present, the
pressure plate must be replaced.
Pressure Plate Warpage
Use a straight edge and a feeler gauge to measure the
pressure plate friction surface flatness in four directions.
If any of the measured values exceed the specified limit, the
pressure plate must be replaced.
Pressure Plate Warpage mm(in)
Limit
0.3 (0.012)
Clutch Cover
Visually inspect the entire clutch cover for excessive wear,
cracking , and other damage.
The clutch cover must be replaced if any of these conditions
are present.
1. Abrasion, scratches, cracks and deflection of friction face to
the disc, loose rivet and wear of ring
Grind small scratches, or replace the assembly if extreme
scratches are found.