C.
Standard Tools and Equipment
(1)
Indicator - Dial
D.
References
(1)
AMM 09-11-00/201, Towing
(2)
AMM 29-11-00/201, Main Hydraulic Supply System
(3)
AMM 32-00-30/201, Landing Gear Door Locks
(4)
AIPC 32-22-01 Fig. 1
(5)
AIPC 32-22-03 Fig. 2
E.
Access
(1)
Location Zone
711 Nose Landing Gear Door, Forward, LH
712 Nose Landing Gear Door, Forward, RH
F.
Prepare to Adjust
S 492-019
(1) Make sure the landing gear ground locks are installed (AMM 09-11-00/201).
S 862-020
WARNING: MAKE SURE ALL PERSONS AND EQUIPMENT ARE AWAY FROM THE DOOR
_______ OPERATION AREA. A FAST MOVEMENT OF THE DOORS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Make sure all persons and equipment are clear of door operation area.
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747-400 MAINTENANCE MANUAL
S 862-021
(3)
Open the wheel well doors for the nose landing gear (See "Ground Door Release Handle Open Operation").
S 032-022
(4)
Disconnect the operator rod from each door (View E, Fig. 201).
S 492-023
(5)
Install the rig pin (NG-1) through both sides of the carrier and through the link of the sequence valve mechanism.
S 032-024
(6)
Disconnect and remove the actuator rod of the sequence valve from the aft corner of the left door and the sequence valve mechanism (View F, Fig. 201).
G.
Adjust the Doors
NOTE: This procedure has steps to adjust the hinges, the doorstop bolts,
____
the sequence valve rod installation, and the sensors.
S 862-068
(1)
Move the control handle to the DN position.
S 862-026
(2)
Retract the door actuator (See "Ground Door Release Handle Close Operation").
(3)
Hold the door in the closed position.
S 222-070
(4)
Make sure the flushness of the door skin along the entire outboard edge of the door is as shown (View B-B, Fig. 202).
(a)
If it is necessary, do the steps that follow:
S 222-027
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MAINTENANCE MANUAL
CAUTION:_______ ADJUST THE HINGE FITTINGS AND THE DOORSTOPS TO ALIGN
THE FORWARD DOORS OF THE NOSE WHEEL WELL. YOU CANNOT
ADJUST THE HINGE FITTINGS THAT ARE MOUNTED ON THE
DOORS.
1) Remove the fuselage skin fairing along the door opening and loosen the hinge fitting mounted to the sidewall.
2) Move the hinge fittings up or down on the serrated plates to get the necessary flushness between the door and the fuselage.
3) Attach the hinge fittings to the sidewall.
S 982-029
(5)
Move the doors through all its movement to make sure it operates smoothly.
S 982-076
(6)
Install fuselage skin fairings.
S 862-030
(7)
Open the door to the dimension shown (View H-H, Fig. 202).
S 222-031
(8)
Make sure the clearance between the outboard edge of the door and the fuselage skin panel is 0.10 inch minimum.
S 352-032 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 起落架 LANDING GEAR 3(166)
