S 864-029
(4)
Set the parking brake.
S 784-017
(5)
Make sure the pressure indication on the pressure gage is 3000 | 200 psi.
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A
747-400 MAINTENANCE MANUAL
S 794-031
(6) While the parking brake is set, make sure the pressure in the hydraulic brake accumulator stays near the initial 3000 |200 psi.
NOTE: Use the direct reading pressure gage for an indication of
____ pressure in the hydraulic brake accumulator.
S 794-030
(7)
While the parking brake is set, listen and feel for gas leaks at the pressure gage.
F.
Put the Airplane Back to Its Initial Condition
S 094-026
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ DOOR LOCKS FROM THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Do this task: "Removal of the Door Locks from the Wing Landing Gear" (AMM 32-00-30/201).
S 094-027
(2)
Do this task: "Removal of the Door Locks from the Body Landing Gear" (AMM 32-00-30/201).
(3)
Remove electrical power, if it is not necessary (AMM 24-22-00/201).
S 844-028
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747-400 MAINTENANCE MANUAL
HYDRAULIC BRAKE PRESSURE TRANSMITTER - REMOVAL/INSTALLATION
___________________________________________________________
1. General_______
A. This procedure contains two tasks:
(1)
The removal of the hydraulic brake pressure transmitter
(2)
The installation of the hydraulic brake pressure transmitter.
B.
In subsequent steps, the hydraulic brake pressure transmitter is referred to as the pressure transmitter.
C.
The pressure transmitter makes an electrical signal related to a value for pressure. This signal is the input to the HYD BRADE PRESS gage on the Captain's Main Instrument Panel, P1.
D.
The pressure transmitter is part of the hydraulic brake accumulator charging equipment installation.
E.
The pressure transmitter is installed on the center web of the keel beam in the wheel well for the right body gear.
TASK 32-41-12-004-001
2. Hydraulic Brake Pressure Transmitter Removal (Fig. 401)____________________________________________
A. General
(1)
In subsequent steps, the hydraulic brake pressure transmitter is referred to as the pressure transmitter.
B.
References
(1)
AMM 09-11-00/201, Towing
(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 29-11-00/201, Main Hydraulic Supply System
(4)
AMM 32-00-30/201, Landing Gear Door Locks
(5)
AIPC 32-41-11, Fig. 1
(6)
AIPC 32-41-12, Fig. 2
(7)
WDM 32-41-21
C.
Access
(1)
Location Zone
138 Body Landing Gear Well - Right
(Hydrualic Brake Pressure Transmitter)
222 Control Cabin, RH (P6 Main Power Distribution Panel)
D. Prepare for the Removal
S 494-038
(1) Make sure the landing gear ground locks are installed (AMM 09-11-00/201).
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32-41-12 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 起落架 LANDING GEAR 6(83)
