HELI CPD10, Operation & Service Manual

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2. Brake System
2.1 General description
The brake system is the front two-wheel braking type consisting of brake pedal,
master cylinder and service brakes.
2.1.1 Brake pedal
The brake pedal is constructed as shown in figure 2-1.2 and mounted on the gearbox
through a bracket.
The force acts on the pedal is changed to brake fluid pressure through the push rod
of the master brake cylinder.
Fig. 2-1.1 Service braking principle diagram Fig. 2-1.2 Brake pedal
2.1.2 Master cylinder
The cylinder contains valve seat, return spring, primary cup, piston and secondary
cup, which are all kept in place with a stop washer and a stop wire. The exterior of the
cylinder is protected from the dust by means of a rubber dust cover. The piston is actuated
through the push rod by operation of brake pedal. As the brake pedal is pressed, the push