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54
BRAKES
Sr.
Trouble
Cause
Remedy
No.
4. Unsatisfactory braking action a. Vacuum hose or connections a. Eliminate leaks.
despite hard pedal pressure
leaky.
(short pedal travel)
b. Damaged vacuum seal in
b. Replace vacuum seals.
tandem master cylinder
c. Damaged O-ring between
c. Replace O-ring.
tandem master cylinder and
vacuum booster.
d. Damaged seal on vacuum d. Replace vacuum booster
booster piston
e. Tear in diaphragm.
e. Replace vacuum booster.
f. Check valve sticking
f. Replace vacuum line together
with check valve.
g. Defective vacuum pump.
g. Repair vacuum pump.
5. Unsatisfactory braking
a. Drum to shoe clearance
a. Check & rectify adjuster
action despite hard pedal
excessive
mechanism
pressure (long pedal travel)
b. Incorrect brake fluid.
b. Flush the system and use
specified brake fluid.
c. Cracked drums.
c. Replace brake drum.
d. Excessive wear in
d. Inspect and rectify link’ages.
brake pedal linkage.
e. Wheel bearing play
e. Adjust.
excessive
f. Mounting of brake parts
f. Rectify and tighten.
loose/defective
g. One brake circuit
g. Eliminate leaks.
inoperative through leaks.
6. Brakes dragging on one side.
a. Brake shoes/pads oily
a. Check seals of wheel hub,
or greasy.
replace brake pads/shoes.
b. Brake shoes/pads of one
b. Replace brake shoes/pads.
side excessively worn.
c. Difference in friction value
c. Replace brake shoes/pads.
of brake shoes/pads.
d. Out of round drums.
d. Correct by grinding/turning.
e. Bad tyres.
e. Replace worn tyres.
f. Brake back plate/caliper
f. Tighten firmly.
mounting loose
g. Corrosion traces on
g. Check and rectify.
whedbaes.