Background Image
Table of Contents Table of Contents
Previous Page  528 / 1526 Next Page
Information
Show Menu
Previous Page 528 / 1526 Next Page
Page Background

53

BRAKES

TROUBLE SHOOTING HINTS FOR THE BRAKE SYSTEM

A. SERVICE BRAKE

Sr.

Trouble

Cause

Remedy

No.

1. Brake pedal is soft and spongy a. Air in brake system.

a. Bleed brake system.

b. Brake fluid too hot (after long b. Give brake system time to cool

down gradient travel of long

and if necessary, bleed.

time operation of brake).

c. One of both primary seals

c. Replace primary seals.

damaged in tandem

master cylinder.

d. Brake shoes worn out.

d. Replace shoes.

e. Soft or weak hose

e. Check & replace

2. Brakes heat up when vehicle is a. Compensation port clogged a. Dis-assemble tandem master

travelling or fail to release.

in tandem master cylinder.

cylinder and clean.

b. Rubber parts swollen because b. Drain brake system and

of usage of non-recommended dismantle the whole brake

fluids.

system. Replace all rubber parts

including the brake hoses. Fill

brake system with one of the

approved brake fluids.

c. Brake drum shoe clearance c. Check & rectify auto adjuster

is more.

mechanism

d. Brake shoe return spring

d. Replace

weak/broken

e. Brake drum out of true or

e. Rectify

scored.

f. Back plate/caliper mounting f. Tighten bolts.

loose.

g. Slack hub bearing.

g. Rectify.

h. Vacuum booster piston seized h. Rectify/replace.

i. Weak/broken pedal return

i. Replace spring. Lubricate pivot

spring. Pedal linkage binding.

and linkage.

3. Unsatisfactory braking action a. Brake shoes oily or greasy.

a. Rectify the cause of leakage

despite hard pedal pressure

and clean brake drum/disc.

(normal pedal travel)

Replace brake shoes/pads

b. Brake shoe/pads charred.

b. Replace the parts.

c. Brake shoes/pads worn.

c. Replace.

d. Vacuum booster defective

d. Rectify/Replace.

e. Brake shoe/drum distorted.

e. Check and rectify.