S 025-041
(11)
Remove the plug from the UP line at the truck positioner shuttle valve.
S 425-042
(12)
Connect the UP line to the truck positioner shuttle valve.
S 025-043
(13)
Remove the plug from the RETURN line that was disconnected at the truck positioner actuator.
S 425-044
(14)
Connect the RETURN line to the port on the truck positioner actuator.
S 865-017
(15)
Close this circuit breaker on the overhead circuit breaker panel, P11:
(a)
11G11, AUTO SPEEDBRAKE
S 865-019
(16) Supply electrical power (AMM 24-22-00/201).
32-32-17
ALL ú ú 01 Page 505 ú Jan 28/02
A
757 MAINTENANCE MANUAL
S 865-020
(17)
Put the speedbrake lever in ARMED.
S 215-021
(18)
Make sure the AUTO SPDBRK light on the pilots' overhead panel, P5, is off.
S 865-022
(19)
Move the control lever for the landing gear from OFF to DN.
S 215-023
(20)
Make sure the valve does not have any hydraulic leaks.
E.
Put the Airplane Back to Its Usual Condition
S 865-024
(1) Make sure the fluid in the hydraulic reservoir is at the correct level. Fill if it is necessary (AMM 12-12-01/301).
S 085-047
WARNING:_______OBEY THE REMOVAL PROCEDURE FOR THE DOOR LOCKS. THE DOORS OPEN AND CLOSE QUICKLY. THE MOVEMENT OF THE DOORS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(2)
Remove the door locks (AMM 32-00-15/201).
S 865-026
(3)
Remove the pressure from the left hydraulic system if it is not necessary (AMM 29-11-00/201).
(4)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 865-027
32-32-17
ALL ú ú 01 Page 506 ú Jan 28/02
A
757
MAINTENANCE MANUAL
MAIN GEAR TRUCK POSITIONER SHUTTLE VALVE PRESSURE SWITCH - REMOVAL/INSTALLATION
_______________________________________________________________________________
1. General
_______
A. This procedure has two tasks. The first task is for removal of the pressure switch on the truck positioner shuttle valve for the main landing gear. The other task is for installation of the pressure switch.
TASK 32-32-18-004-001
2. Remove the Pressure Switch on the Truck Positioner Shuttle Valve (Fig. 401)
________________________________________________________________
A. References
(1)
AMM 24-22-00/201, Electrical Power - Control
(2)
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System
(3)
AMM 32-00-15/201, Landing Gear Door Locks
(4)
AMM 32-00-20/201, Landing Gear Downlocks
B.
Access
(1)
Location Zones
551 Wing Trailing Edge (Left)
651 Wing Trailing Edge (Right)
C.
Prepare for Removal
S 214-002
(1) Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
S 494-003
WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO INSTALL THE DOOR
_______ LOCKS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2)
Open the doors for the landing gear and install the door locks (AMM 32-00-15/201).
S 864-004
(3)
Open this circuit breaker on the overhead circuit breaker panel P11, and attach a DO-NOT-CLOSE tag:
(a)
11G11, AUTO SPEED BRAKE
(4)
Supply electrical power (AMM 24-22-00/201).
S 864-006
(5)
Remove the pressure from the left hydraulic system and hydraulic reservoir (AMM 29-11-00/201).
S 864-005
32-32-18
ALL ú ú 01 Page 401 ú May 28/99
A
757 MAINTENANCE MANUAL
SEE B
SEE A
FWD
TRUNNION SUPPORT STRUCTURE FOR THE MAIN LANDING GEAR(MAIN LANDING GEAR NOT SHOWN) STABILIZING LINK A
TRUCK POSITIONER SHUTTLE VALVE
FWD
PRESSURE
SWITCH ELECTRICAL
CONNECTOR
(LEFT INSTALLATION SHOWN - RIGHT OPPOSITE)
B
Main Landing Gear Truck Positioner Shuttle Valve Pressure Switch Installation Figure 401
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 2(67)
