BRAKES
I.
DESCRIPTION
depressed the lever will remain in that
Lockheed Hydraulic Brakes are fitted to
all
rearward position. To release the handbrake
four wheels. Two leading shoe type are
it is only necessary to pull the lever rear-
used on the front wheels and leading and
ward sharply and then let it travel forward.
trailing shoe type on the rear wheels.
A foot pedal operates the brakes
hydraulic-
2.
ROUTINE MAINTENANCE
ally on all four wheels simultaneously,
Examine the fluid level in the master
whilst the handbrake operates the rear
cylinder periodically and replenish
if
nec-
brakes only by means of a cable.
essary to keep the level
+"
below the under-
side of the cover plate.
The foot pedal is coupled by a push rod to
the master cylinder bore in which the
Do not
fill
completely.
The addition of
hydraulic pressure of the operating fluid
fluid should only be necessary at infrequent
is originated. The second bore of the master
intervals and a considerable fall in fluid
cylinder is connected to the clutch operating
level, indicates a leak at some point
in
mechanism.
the system, which should be traced and
A supply tank, integral with the master
rectified immediately.
cylinder, provides a fluid reservoir for both
Ensure that the air vent in the
filler cap
cylinders, a pipe line consisting of tube,
is not choked, blockage at this point will
flexible hose and unions connect the master
cause the brakes to drag.
cylinder bore to the wheel cylinders.
Adjust the brakes when the pedal travels to
The pressure created in the master cylinder,
within
1"
of the toe board before solid
by application of the foot pedal, is trans-
resistance is felt. If it is desired, adjustment
mitted with equal force to
all
wheel cylin-
may be carried out before the linings have
ders simultaneously. This moves the piston
become worn to this extent.
which in
turn
forces the brakes shoes
outward and in contact with the brake
drum.
3-
BRAKE
L-G
lDENTIFICAT1oNS
An
independent mechanicallinkage, actuated
To afford maximum braking efficiency
by
a
hand lever, operates the rear brakes by
brake linings of an improved material have
mechanical expanders attached to the rear
been progressively introduced. To enable
wheel cylinder and acts as a parking brake.
identification linings
are
colour marked at
The handbrake is situated in the centre of
their edges.
the car on the right-hand side of thegearbox
The following tabulation will give these
tunnel. It is operated by pulling the grip
identification marks and also the Commision
rearwards and operating the push button on
number of the car on which they were
top by the thumb; when the button is
fist used.
BRAKE
LINING
IDENTIFICATIONS
REMARKS
For 10" brake only.
Introduction of 10"
brakes for rear wheels
2
INCORPORATION
FT.
TS.l to TS.3247
R.
TS.1 to TS.3219
FT.
TS.3248 to TS.5216
R.
TS.3220 to TS.5480
TS.5217 to TS.5480
TS.5480 and future.
LINING
DM.7 Front and Rear
DM.8
M.20 Front only.
(DM.8 fitted on rear
brakes).
M.20
Front and Rear
IDENTIFICATION
3 narrow blue striped
markings on
lining
edges.
2 narrow blue and 1 wide
blue marking,
with
alu-
minium
coloured metal
impregnation of
lining.
5
green
stripe
markings
with
bronze coloured
metal impregnation
As
above.
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