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hydraulic systems, accumulators in each hydraulic system will provide reserve pressure for
six braking applications (providing the anti--skid is selected OFF).
Available inboard and outboard brake pressure is continuously monitored and displayed on
EICAS on the hydraulic synoptic page, and any abnormal brake pressure detected is
displayed on the EICAS in the form of a visual and/or aural message.
NOTE
A brake overheat condition may trigger a MLG BAY
OVHT warning message (refer to chapter 10,
section 40).
During landing gear retraction, hydraulic pressure is applied to the main wheel brake control
valves to stop main wheel spin.
Two brake wear indicator pins, installed on each brake assembly, provide a visual indication
of brake wear. If the indicator pin is flush with the top of the indicator housing, maintenance
should be informed.
NOTE
The brake wear indicator pins must be checked with
the brakes applied and No. 2 and No. 3 hydraulic
systems on.
REV 56, Jan 31/03
Vol. 1 16--40--2
LANDING GEAR
Brake System
Flight Crew Operating Manual MASTER
CSP A--013
Brake System --- Schematic
Figure 16---40---1
L R
CO--PILOT’S
BRAKE PEDALS
PARKING
HANDLE
ANTI--SKID
CONTROL
ACCUMULATOR
NO.3
HYDRAULIC
SYSTEM
LEFT
INBOARD
BRAKE
CONTROL
VALVE
RIGHT
INBOARD
BRAKE
CONTROL
VALVE
LEFT
INBOARD
ANTI--SKID
CONTROL
VALVE
RIGHT
INBOARD
BRAKE
RIGHT
OUTBOARD
BRAKE
RIGHT
INBOARD
ANTI--SKID
CONTROL
FROM NOSE
LANDING
GEAR UPLINE
PARKING
BRAKE
SOV
VALVE
RIGHT
INBOARD
BRAKE
CONTROL
VALVE
LEFT
INBOARD
BRAKE
CONTROL
VALVE
UNIT
LEFT
INBOARD
BRAKE
CONTROL
VALVE
RIGHT
INBOARD
BRAKE
CONTROL
VALVE
ACCUMULATOR
L R
NO.2
HYDRAULIC
SYSTEM
LEFT
INBOARD
BRAKE
LEFT
OUTBOARD
BRAKE
BRAKE
PILOT’S
BRAKE PEDALS
NO. 2 HYDRAULIC SYSTEM
NO. 3 HYDRAULIC SYSTEM
RETURN
PARKING BRAKE
Vol. 1 16--40--3
REV 56, Jan 31/03
LANDING GEAR
Brake System
Flight Crew Operating Manual
CSP A--013
MASTER
Brake Wear Indication
Figure 16---40---2
BRAKE ASSEMBLY (4)
BRAKE WEAR
INDICATOR
(2 PER BRAKE
ASSEMBLY)
A
A
REV 56, Jan 31/03
Vol. 1 16--40--4
LANDING GEAR
Brake System
Flight Crew Operating Manual MASTER
CSP A--013
Brake System --- EICAS Messages and Synoptic Page Indications <MST>
Figure 16---40---3
EICAS Secondary Display -- Hydraulic Page
Center Instrument Panel
INBOARD, OUTBOARD
BRAKE PRESSURE
Readout
Indicates brake pressure of the
respective system.
GREEN -- Brake pressure is 1000 psi
to 3200 psi.
WHITE -- Brake pressure is greater than
to 3200 psi.
AMBER -- Breke pressure is less than
1000 psi.
BRAKE OVHT
Warning (red)
Indicates an overheat
condition (temperature
greater than 360 C)
exists in any one
of the brakes.
”BRAKES”
IB, OB BRAKE PRESS
Caution (amber)
Indicates that brake
pressure of the
respective system is
less than1030 psi.
Primary Page
IB BRAKE PRESS
BRAKE OVHT
<0039> OB BRAKE PRESS
<0006>
Vol. 1 16--40--5
REV 56, Jan 31/03
LANDING GEAR
Brake System
Flight Crew Operating Manual
CSP A--013
MASTER
Parking Brake System
Figure 16---40---4
While fully depressing
both brake pedals on
the pilot’s or copilot’s
side, pull parking brake
handle and rotate it 90
degrees to the locked
position.
While fully depressing
both brake pedals on
the pilot’s or copilot’s
side, rotate the parking
brake handle to the
unlocked position and
push it in.
Parking Brake Handle
Pilot’s Instrument Panel
PARKING BRAKE
PARKING BRAKE
Handle (black)
To engage parking brake:
To disengage parking
brake:
PARKING BRAKE ON
Light
Comes on to indicate that
the parking brake is set.
EXTERNAL SERVICE PANEL
EXT AC
PUSH
CKPT CALL
PUSH
HDPH
LAMP MIC
TEST
PKG BRK
ON
BATT
ON
AVAIL
IN USE
CALL
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