Diamond Aircraft DV 20 E 2022, Airplane Maintenance Manual

Page: 536 / 903

AIRCRAFT
Landing Gear
DV 20 E AMM
Page 2
15 Mar 2022
32-40-00
Doc # 4.02.25
Rev. 2
(1) Co-Pilot's Brake Operation
When you press on the co-pilot's right brake pedal, the following happens:
)
The connection to the reservoir is cut off by the initial movement.
)
Further movement pushes fluid past the piston on the pilot's master cylinder.
)
The fluid flows through the parking brake valve to the right brake caliper.
)
The fluid pushes the piston and the pressure plate against the brake disk.
)
The reaction force on the caliper pulls the back plate against the brake disk.
)
And the right brake is applied.
In the same way, when you press on the co-pilot's left brake pedal, the left brake is applied.
(2) Pilot’s Brake Operation
When you press on the pilot's right brake pedal, these things happen:
)
The connection from the co-pilots master cylinder is cut off by the initial movement. (Note:
Any hydraulic pressure from the co-pilot's master cylinder pushes on the back of the
piston in the pilot's master cylinder. This increases the brake pressure).
)
The fluid flows through the parking brake valve to the right brake caliper.
)
The fluid pushes the piston and the pressure plate against the brake disk.
)
The reaction force on the caliper pulls the back plate against the brake disk.
)
And the right brake is applied.
In the same way, when you press on the pilot's left brake pedal, the left brake is applied.
Note: If one side of the system fails, one or both pilots can loose braking on that side. For
example, a leak in the pipe between the co-pilot's and pilot's right master cylinders
will cause a right brake failure for the co-pilot. The pilot's right brake will operate
correctly. If the leak is between the pilots right master cylinder and the right brake
caliper, both pilots will have right brake failure.