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172
7.
SUPPLEMENT OF CB/CL 450 Kl-K7
©
Front brake lever
®
Front brake lever cam
®
Primary cup
©
front brake hoses B
7.67
Front Disc Brake
The disc brake system consists of the brake iever
and master cylinder
on the right handle bar, caliper
mounted on the front left side, and the special
stainless steel brake disc mounted on the wheel hub.
(Operation)
1 . When the brake lever (J) is pripped, the cam
at the base of the lever actuates a piston
of the master cylinder.
2. The piston moves the primary cup
®
which
blocks the passage to the reservoir and pres-
surizes the fluid within
the master cylinder.
This pressure is transmitted to the caliper chamber
through brake hose B
©,
3 way joint
@,
and
brake hose A (1).
Also, the stop light pressure
switch
mounted on the 3 way joint is actuated.
3. The hydraulic pressure within caliper chamber
A applies pressure against piston
®,
which forces
pad A
®
against the brake disc.
Since the
caliper assembly is mounted on an arm which
pivots at the front fork, it is free to swivel,
therefore, the reaction from pad A
®
is trans-
mitted to pad B, resulting in equalized pressure
being applied by the pads to both sides of the
brake disc.
Three way Joint
Stop switch
®
Caliper A
®
Piston
Front brake hose A
@)
Pad A
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