TCM FB30-7 - 5.2.6 Troubleshooting Guide

5. BRAKE SYSTEM
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5.2.6 TROUBLESHOOTING GUIDE
Remedy
Repair.
Check and adjust the adjuster.
Check for dragging.
Adjust contact.
Repair or replace.
Checkbrakeuid.
Adjust.
Repair or replace.
Repair or replace.
Repair or replace.
Replace.
Replace.
Repair or replace.
Check and adjust the adjuster.
Repair or replace.
Replace.
Repair or replace.
Adjust.
Repair.
Check and adjust the adjuster.
Bleed air.
Adjust.
Trouble
Poor braking
force
Noisy brake
Uneven
braking
Soft or spongy
brake
Probable Cause
1. Brakeuidleaksfromthebrakesystem
2. Maladjustment of brake shoe clearance
3. Overheating brake
4. Poor contact between brake drum and lining
5. Foreign matter sticking to lining
6. Foreignmattermixedinbrakeuid
7. Maladjustment of brake pedal
1. Lining surface hardened or foreign matter
sticking to lining
2. Deformed backing plate or loose bolts
3. Shoes deformed or improperly installed
4. Lining unevenly worn
5. Defective wheel bearing
1. Foreign matter adhering to lining
2. Maladjusted brake shoe clearance
3. Malfunctioning wheel cylinder
4. Shoe return spring defective
5. DeectedDrum
6. Impropertireinationpressure
1. Brakeuidleaksfrombrakesystem
2. Maladjusted brake shoe clearance
3. Air mixed in brake system
4. Pedal maladjusted.