Brake System - Cirrus SR22 Pilot Operating Handbook

Section 7 Cirrus Design
Airplane Description SR22

Brake System

The main wheels have hydraulically operated, single-disc type brakes,
individually activated by floor mounted toe pedals at both pilot stations.
A parking brake mechanism holds induced hydraulic pressure on the
disc brakes for parking.
The brake system consists of a master cylinder for each rudder pedal,
a hydraulic fluid reservoir, a parking brake valve, a single disc brake
assembly on each main landing gear wheel, and associated hydraulic
plumbing. Braking pressure is initiated by depressing the top half of a
rudder pedal (toe brake). The brakes are plumbed so that depressing
either the pilot's or copilot's left or right toe brake will apply the
respective (left or right) main wheel brake. The reservoir is serviced
with Mil-H-5606 hydraulic fluid.
Brake system malfunction or impending brake failure may be indicated
by a gradual decrease in braking action after brake application, noisy
or dragging brakes, soft or spongy pedals, excessive travel, and/or
weak braking action. Should any of these symptoms occur, immediate
maintenance is required. If, during taxi or landing roll, braking action
decreases, let up on the toe brakes and then reapply the brakes with
heavy pressure. If the brakes are spongy or pedal travel increases,
pumping the pedals may build braking pressure.
Refer to Section 10, Safety Information, for Brake System operational
considerations.
7-62 P/N 13772-001
Revision A6