NANO

514

BRAKE SYSTEM

TROUBLESHOOTING OF BRAKE SYSTEM

CONCERN

CAUSE

REMEDY

Brake warning light fails to 1. Brake warning light circuit faulty.

1. Repair circuit or replace bulb.

turn ON even when parking

brake is applied.

Brake pull (Brakes not

1. Drum to shoe clearance out of

1. Check for auto adjusting

working in unison)

adjustment (malfunctioning auto

mechanism

adjusting mechanism.)

2. Restricted brake pipes or hose 2. Check for soft hoses and damaged

line, replace parts as necessary.

3. One side brake shoe lining soiled 3. Replace brake linings.

with brake fluid, oil or grease

4. Weakened or broken return

4. Replace broken springs.

springs in the brake.

5. Sluggish parking - brake cable or 5. Repair or replace the linkage.

linkage

6. Master cylinder piston not

6. Repair master cylinder.

returning correctly.

7. Wheel cylinder malfunctioning.

7. Repair or replace

8. Wheel tires inflated incorrectly.

8. Inflate tires to correct pressure

9. Disturbed front wheel alignment

9. Adjust as prescribed

10. Loose suspension parts

10. Check all suspension mountings

Dragging brakes

1. TMC piston not returning correctly. 1. Repair TMC.

(A very light drag is present 2. Restricted brake pipes and hoses 2. Check for soft hoses and damaged

in all brakes immediately

line, replace parts as necessary.

after pedal is released)

3. Incorrect parking brake adjustment 3. Check and adjust to correct

on rear brakes

specifications.

4. Weakened or broken return

4. Replace.

springs in the brakes

5. Sluggish parking brake cables

5. Repair or replace.

6. Wheel cylinder piston sticking.

6. Repair as necessary.

Vehicle pulls to one side 1. Incorrect or loose brake shoes

1. Replace with correct pair of shoes

on respective axles

2. Mismatched tires/ pressures

2. Check and match for correct tire

size and pressures.

Grabbing brakes. Severe 1. Incorrect shoes or loose friction 1. Replace with correct pair of shoes

reaction to pedal pressures lining on brake shoes

on respective axle

2. Rough or corroded TMC bore.

2. Repair or replace TMC

3. Binding brake pedal linkage

3. Free up, lubricate and replace worn

parts.