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2-10
GROUP
2-BRAKES
vertical inner surfaces of these
anchor plate ledges.
A single hydraulic piston is fitted
into a bore in the inner portion of the
caliper housing. (Fig. 12). A square
section seal is fitted into an annular
groove in the caliper bore (refer Figs.
12·13} and a rubber boot is utilized to
.... "
seal the piston and caliper bore
FIG. 7- Disc Brake Assembly-
Floating Caliper- Girling
Shown.
The lower ends of the stabilizer
are bolted directly to the lower in-
board surface of the anchor plate.
This permits transverse movement of
the caliper assembly (Fig. 8).
.
The caliper housing is a single
piece casting positioned between two
ears on the top of the anchor plate.
The inner brake shoe rests on the top
of two anchor plate ledges located at
each end of the anchor plate. Two
spring clips are used to maintain the
shoe in position. Brake shoe endwise
movement is restricted by the ends
of the brake shoe contacting the
I
VIEW A,
.
FIG. 8- Caliper Mounting Bolts
against road splash contamination. A
feed port is provided in the caliper
housing below the piston.
A
bleed
screw is located in the caliper housing
over the piston to bleed air from the
hydraulic system. It is not necessary
to remove the front wheels to bleed
the brakes.
The outer brake shoe and lining
assembly is longer than the inner
assembly, and the shoe and lining
assemblies are not interchangeable
(Fig.
14}.
Two lanced abutments on the
outer brake shoe fit into the slots on
the outboard legs of the caliper
housing. The outer brake shoe and
lining assembly is also held in a fixed
position by brake shoe hold-down
pins which extend through the brake
shoe and caliper housing. The pins
are
secured.
at the outer surface of the
caliper housing with two spring clips.
A splash shield is bolted to the
spindle to protect the brake rotor
against road splash contamination.
- · MUST II CLEAR
Of STHIIING STOP ON
-DU AIIM
FLOATING CALIPER P.B.R.
The single piston hydraulic disc
brake caliper is constructed from a
single casting which contains one large
piston bore in the inboard section
of the casting. (Inboard refers to the
side of the casting which is nearest the
centreline of the car when the caliper
is mounted}.
The fluid inlet hole and bleeder
valve
hole'
are machined into the in-
board section of the caliper and con-
nect directly to the piston bore. The
cylinder contains a piston and seal.
The seal has a square section, and
is located in
a
groove which is
machined in the cylinder bore. It
fits around the outside diameter of
the piston to
pr_
o vide a hydraulic seal
between the piston and the cylinder
wall.
The top of the piston is machined
to accept a sealing dust boot. The
outside diameter of the boot is pressed
into a recess in the top of the cy·
Iinder bore. The inside diameter of
the boot fits into the groove which
is machined in the piston. The piston
is steel, precision ground and chrome
plated giving it a very hard and dura·
ble
surface.
The use of abrasives or
any attempt to re-machine the piston
will destroy the plating.
.._ _ _ I'USH - ·
TWISn OUTIOAIID
tO
P11Y1NT
lnBPRINCI WITH IIIAICI H0S1
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