(2)
The installation of the uplock-operated sequence valve for the wing landing gear
(3)
The removal of the mechanism for the uplock-operated sequence valve for the wing landing gear
(4)
The installation of the mechanism for the uplock-operated sequence valve for the wing landing gear.
B.
To remove the uplock-operated sequence valve these operations are necessary:
(1)
Disconnect the hydraulic lines.
(2)
Remove the valve.
(3)
Remove the hydraulic fittings from the valve.
C.
To install the uplock-operated sequence valve these operations are necessary:
(1)
Install the hydraulic fittings in the valve.
(2)
Make sure the white bar on the valve slide is in the correct position.
(3)
Connect the hydraulic lines to the valve.
(4)
Do a check of the operation of the valve.
D.
The mechanism for the uplock-operated sequence valve contains an actuator rod. The rod attaches to the sequence valve and the uplock mechanism. To remove the rod, disconnect it at the two ends.
E.
The sequence valve permits hydraulic pressure from system No. 4 to the side of the door actuator that closes the doors. It hydraulically connects with the downlock-operated sequence valve.
F.
The uplock-operated sequence valve is above and in the aft direction of the uplock hook mechanism. The sequence valves attach to the structure on the outboard side of the wheel well of the wing landing gear.
TASK 32-32-06-024-001
2. Wing Landing Gear Uplock-Operated Sequence Valve Removal________________________________________________________
A. 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
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-32-06
ALL ú ú 01 Page 401 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(4)
AIPC 32-32-06 Fig. 1
B.
Access
(1)
Location Zone
135 Wing Landing Gear Well, LH
136 Wing Landing Gear Well, RH
C.
Prepare for the Removal
S 494-040
WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) Install the ground locks in all landing gear (Ref 09-11-00/201).
S 494-027
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASKS BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2)
Do this task: "Wing Landing Gear Door Lock Installation"
(AMM 32-00-30/201).
S 494-028
(3)
Do this task: "Body Landing Gear Door Lock Installation"
(AMM 32-00-30/201).
S 864-004
(4)
Make sure there is no pressure in hydraulic system No. 4
(AMM 29-11-00/201).
D.
Remove the Valve.
S 024-005
(1)
Remove the valve (Fig. 401):
(a)
Disconnect the hydraulic lines from the valve.
(b)
Install a cap on the hydraulic lines.
(c)
Disconnect the actuator rod from the valve.
(d)
Remove the three bolts that attach the valve.
(e)
Remove the valve from the airplane.
S 034-041
(2)
If it is not necessary to remove the hydraulic fittings for a new valve, install a cap on the fittings.
S 034-042
(3)
Remove the hydraulic fittings from the valve if it is necessary to install them on the new valve.
中國航空網 m.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 4(77)
