-
the pressure to go to the second set of pistons in the brake units (those of the alternate braking system).
The related pressure transducers monitor the pressure at the forward MLG brakes and shows this pressure at the triple pressure indicator (Ref. 32-44-00).
B. Parking Brake set to OFF
When the selector switch is set to OFF, the motors in the park brake control valve 102GG are energized again (but in the opposite direction). The selector valve closes to:
-isolate the hydraulic power supply from the MLG brakes
-connect the brakes of the MLG to return (brakes released).
C. Indication
The triple pressure indicator 60GG shows the pressure that is available from the accumulator (Ref. 32-44-00). When the parking brake is set to ON, it also shows the pressure at the forward brakes of each main landing gear.
If the pressure of the brake yellow accumulator is low, the aural warning sounds and the master caution comes ON.The failure is shown AMBER on the displays.
1EFF : 401-499, 1 32-45-00Page 18 1 1 Config-2 Aug 01/05 1 1 1CES 1
PARKING/ULTIMATE EMERGENCY BRAKING - DEACTIVATION/REACTIVATION
______________________________________________________________ TASK 32-45-00-040-001 Parking Brake-One motor of the parking brake control valve is inoperative WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
WARNING : MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE
_______
YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT.
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______
CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING : MAKE SURE THAT THE CONTROLS AGREE WITH THE POSITION OF THE ITEMS THEY
_______
OPERATE BEFORE YOU PRESSURIZE A HYDRAULIC SYSTEM.
1. Reason for the Job
__________________
Refer to the MMEL TASK: 32-45-01
Landing Gear
Parking/Ultimate Emergency Braking
Parking Brake
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice(s)
No specific access platform 2 m (6 ft. 7 in.) R No specific Torque Wrench : range 0.00 to 1.20 m.daN R (0.00 to 9.00 lbf.ft)
1EFF : ALL 1 32-45-00Page 401 1 1 May 01/05 1 1 1CES 1
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 29-24-00-863-001 Pressurize the Yellow Hydraulic System with the
Electric Pump
29-24-00-864-001 Depressurize the Yellow Hydraulic System
32-12-00-010-001 Open the Main Gear Doors for Access
32-12-00-410-001 Close the Main Gear Doors after Access
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
32-45-00-991-002 Fig. 401
R **ON A/C ALL
3. Job Set-up
__________
Subtask 32-45-00-860-054
A. Aircraft Maintenance Configuration
(1)
On the panel 400VU, make sure that the landing gear control lever is in the DOWN position.
(2)
On the panel 110VU, make sure that the PARKING BRK control-switch is in the OFF position.
(3)
Make sure that the CAPT and F/O brake pedals are released.
(4)
Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002)
1EFF : ALL 1 32-45-00Page 402 1 1 Aug 01/05 1 1 1CES 1 1EFF : ALL 1 32-45-00Page 403 1 1 Aug 01/05 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
Subtask 32-45-00-010-051
B. Get Access
(1) Open the right MLG door (Ref. TASK 32-12-00-010-001).
(2) Put the access platform in position in zone 744.
Subtask 32-45-00-941-052
C. Safety Precautions
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