-
It must be able to pass a flow of 32 gpm at 3000 psig without damage.
-
It must measure a flow of 0.25 to 7.50 gpm with a precision of | 0.5% of the reading.
C.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 27-51-00/201, Trailing Edge Flap System
(3)
AMM 29-11-00/201, Main Hydraulic Supply System
(4)
AMM 29-11-23/201, Pressure Filter Module
(5)
AMM 32-00-30/201, Landing Gear Doors
(6)
AMM 54-62-00/201, Nacelle Strut Access Panels
(7)
AMM 54-62-02/501, Nacelle Strut Access Doors
(8)
AMM 54-62-03/501, Trailing Edge Fairing Doors
D.
Access
(1)
Location Zone
484 System 4 - Strut Aft Fairing
(2)
Access Panel 484AL Trailing Edge Fairing Doors - System 4
E.
Procedure
S 866-218
(1) Supply electrical power (AMM 24-22-00/201).
S 496-219
WARNING: REFER TO AMM 32-00-30/201 FOR THE INSTALLATION PROCEDURE FOR THE LOCKS ON THE LANDING GEAR DOORS. SUDDEN MOVEMENT OF THE DOORS CAN CAUSE INJURY AND DAMAGE.
(2)
Make sure that the locks on the landing gear doors and the landing gears are installed (AMM 32-00-30/201).
S 866-452
(3)
Make sure that the person in the flight compartment can speak with the person on the ground.
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(4) Open the doors on the trailing edge fairing for engine No. 4
(AMM 54-62-00/201).
S 486-221
(5) If a hydraulic service cart is used as the pressure source, connect
the hydraulic service cart:
(a) Connect the cart to the No. 4 hydraulic system with a flow
meter installed in the pressure line between the cart and the
system No. 4 ground service disconnect on the pressure module.
(b) Connect the return line on the hydraulic service cart to the
No. 4 return module.
S 486-222
(6)
If the system demand pump will be used as a pressure source, release the pressure in hydraulic system No. 4 (AMM 29-11-00/201):
(a)
Install a flowmeter in the pressure line on the demand pump between the pump and the ground service disconnect on the pressure module.
(b)
Make sure there is a minimum of 2000 pounds (900 kg) of fuel in the No. 1 and No. 4 main fuel tanks.
NOTE: The fuel weight values are calculated with a fuel
____ density of 6.7 pounds per gallon.
S 866-670
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER.
(7)
Make sure that the inboard and outboard trailing edge flaps are fully retracted.
(a)
If it is necessary, do this task: "Trailing Edge Flaps Retraction with Electrical Power" (AMM 27-51-00/201).
S 866-224
(8) Put the ALTN FLAPS ARM switch on the P2 first officer's panel in the off position.
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S 866-226
(9)
Put the A/P ENGAGE switches (L, C, and R) on the control panel for the AFC model in the off position.
S 866-227
(10)
Put the system No. 4 WING FLT CONTROL SHUTOFF switch on the P461 overhead maintenance panel in the ON position.
S 866-228 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：747-400 AMM 飛機維護手冊 液壓 HYDRAULIC 1(70)
