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MAINTENANCE MANUAL

 (9)  
28 Vdc power is provided to open the parking brake valve. The close sense relay is de-energized, and the flight compartment PARK BRAKE indicator extinguishes.

 (10)
 AIRPLANES WITH PARKING BRAKE ON LIGHT ON THE NOSE LANDING GEAR; This light on the nose gear P62 panel goes off.

 B.
Control

 (1)  
Set parking brakes.

 (a)  
Provide electrical power (AMM 24-22-00/201).

 (b)  
Provide right hydrualic system pressure (AMM 29-11-00/201), or ensure that parking brake accumulator is pressurized.

 (c)  
Close LANDING GEAR PARK BRAKING VLV circuit breaker on P6 panel.

Parking Brake System Electrical Schematic
Figure 3

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MAINTENANCE MANUAL

 (d)  
AIRPLANES WITH PARKING BRAKE ON LIGHT ON THE NOSE LANDING GEAR; Close the BATTERY PARK BRAKE POWER GND IND circuit breaker on the P11 panel.

 (e)  
Depress captain's or first officer's left and right brake pedals fully.

 CAUTION: PARKING BRAKE HANDLE SHALL BE PULLED STRAIGHT OUTWARD
_______ FROM P10 PANEL WITHOUT TWISITNG WHEN SETTING BRAKE. FAILURE TO COMPLY WILL CAUSE DAMAGE TO HANDLE LINKAGE.
 (f)  
Lift up on parking brake handle on P10 quadrant stand. Release brake pedals, then release parking brake handle.

 (g)  
Check that handle remains extended and the PARK BRAKE indication illuminates on P10 Quadrant stand, after a few seconds.

 (h)  
AIRPLANES WITH A PARKING BRAKE LIGHT ON THE NOSE LANDING GEAR; Make sure that this light on the nose gear P62 panel comes on.

 (2)  
Release parking brakes

 CAUTION: PARKING BRAKE HANDLE NEED NOT BE MANIPULATED TO RELEASE
_______ PARKING BRAKE. PUSHING OR TWISTING PRESSURE ON HANDLE WILL CAUSE DAMAGE TO HANDLE LINKAGE.
 (a)  
Depress captain's or first officer's brake pedals fully, then release them.

 (b)  
Check that the parking brake handle moves down against P10 quadrant stand, and that PARK BRAKE light is extinguished in a few seconds.

 (c)  
Depressurize right hydraulic system if no longer required.

 (d)  
Remove electrical power if no longer required.

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PARKING BRAKE SYSTEM

GUN 051
Parking Brake System - Component Index
Figure 101

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BRAKE CONTROL
CABLES (REF)

PARKING BRAKE MECHANISM
SEE A ACCESS DOOR, 113AL, FOR THE FORWARD EQUIPMENT CENTER
PARKING BRAKE
MECHANISM
SHAFT (REF)

PARKING BRAKE PARKING CABLE (REF) BRAKE
LEFT AND RIGHT BRAKE METERING VALVES (REF) (ON THE FORWARD BULKHEAD OF THE WHEEL WELLS FOR THE MAIN LANDING GEAR)
CAPTAIN'S BRAKE PEDAL HOUSING
PARKING BRAKE SWITCH, S459
SEE B
INBD
FWD
PARKING BRAKE MECHANISM
SWITCH, S459
PARKING BRAKE SWITCH, S459
B INDICATION LIGHT FOR THE PARKING BRAKE, L413
PARKING BRAKE LEVER/CABLE
P10 PANEL
P6 PANEL
SEE C

FLIGHT COMPARTMENT
Parking Brake System - Component Location Figure 102 (Sheet 1)
A

PARK
BRAKEa

P A R K
B R A K E
P10 PANEL
C

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PARKING BRAKE ACCUMULATOR
SEE E
ACCUMULATOR ISOLATION VALVE AND THERMAL RELIEF 197KL
CHECK VALVE SEE G SHT 3
CHARGING VALVE AND  PARKING BRAKE VALVE 
PRESSURE GAGE  AND MOTOR, V41 
SEE  D  SEE  F  SHT 3 
PARKING BRAKE 
ACCUMULATOR 

PNEUMATIC
CHARGING VALVE PRESSURE GAGE
(PARKING BRAKE ACCUMULATOR)
CAP (REF) PRESSURE
CHARGING VALVE AND PRESSURE GAGE
TRANSDUCER
(AFT WING/BODY FAIRING)
(REF)
D
PARKING BRAKE ACCUMULATOR E
Parking Brake System - Component Location
Figure 102 (Sheet 2)

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