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Trouble
Shooting
SYMPTOMS
PROBABLE CAUSE
ACTION TO BE TAKEN
Insufflent
performance
Leak
In
hydraulic
system
Trace and
rectIfy
Brake
pads
or
linings excessively
worn
Replace pads
or
brake shoes
Water
or
011
on
linings
Clean
or
replace linings
Pedal
contacts
floor
Pads
or
linIngs
worn
Replace
as
necessary
No brake flUid
Refill and bleed system
Pedal feels spongy
AIr
n
system
Bleed system
InsuffICIent flUId
In reservoir
Top
up flUId system
Pedal
can
be
depressed
WIthout
actIon
Check valve
In
master
cylinder faulty
Check and repaIr
Valve
seat
dIrty
Clean valve
seat
fIt
new
valve
Brake effort decreases and
pedal
goes
Brake
pipes
or
hoses
leaking
TIghten
connections
or
fIt
new
PIpeS
slowly
to
floor
and hoses
Damaged
or
defectIve cups
In
master
Overhaul
cylinder
In
questIon
brake
or
wheel
cylinders
Brakes overheat
CompensatIon
port
In
master
cylinder
Clean
master
brake
cylinder
blocked
Return spring weak
Fit
new
springs
Rubber parts swollen due
to
use
of
Drain
flUId
remove
all rubber parts
unSUItable brake flUid
and flush system
Replace
all parts
In
master
brake
cylinder
Brakes
pull
to
one
SIde
Loose back
plate mounting
bolts
TIghten
Oil
on
Itnlngs
or
pads
Clean
or
replace
Loose
or
damaged
wheel
beanngs
AdJust
or
replace
Improper
operation of wheel
cylinder
Repair
or
replace
Improper
tyre inflation
Correct tyre pressure
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