32-35-01
ALL ú ú 03 Page 404 ú Sep 28/01
A
757 MAINTENANCE MANUAL
MAIN GEAR DOOR LOCK RELEASE ACTUATOR - REMOVAL/INSTALLATION
___________________________________________________________
1. General_______
A. This procedure contains two tasks. The first task removes the actuator that releases the door lock for the main landing gear. The second task installs the actuator.
TASK 32-35-03-004-021
2. Remove the Actuator that Releases the Door Lock on the Main Landing Gear________________________________________________________________________ (Fig. 401)
A. References
(1)
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System
(2)
AMM 32-00-15/201, Landing Gear Door Locks
(3)
AMM 32-00-20/201, Landing Gear Downlocks
(4)
AMM 32-35-00/201, Landing Gear Alternate Extension
B.
Access
(1)
Location Zone
143 MLG Wheel Well (Left)
144 MLG Wheel Well (Right)
211 Control Cabin (Left)
212 Control Cabin (Right)
731 Main Landing Gear (Left)
732 MLG Body Door
741 Main Landing Gear (Right)
742 MLG Body Door
C.
Prepare for the Removal
S 494-022
(1)
Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
S 864-023
(2)
If will remove an actuator that does not operate, open the landing gear doors (AMM 32-35-00/201).
S 494-024
WARNING:_______OBEY THE INSTALLATION 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.
(3)
Open the doors for the landing gear and install the door locks (AMM 32-00-15/201).
S 864-025
(4)
Open this circuit breaker on the main power distribution panel, P6-1, and attach a DO-NOT-CLOSE tag:
(a)
6F6, LANDING GEAR ALTN EXT MOTOR
32-35-03
ALL ú ú 01 Page 401 ú Sep 28/01
A
757
MAINTENANCE MANUAL
SPRING
SEE A SEE B
CRANK FWD
A
DOOR LOCK RELEASE ACTUATOR
SPRING
1 1ON THE DOOR FOR THE LEFT MAIN LANDING GEAR, INSTALL THE SPRING WITH THE OPEN END OF THE HOOK FORWARD.
ON THE DOOR FOR THE RIGHT
MAIN LANDING GEAR, INSTALL
THE SPRING WITH THE OPEN
END OF THE HOOK AFT.
B
IF THE SPRING IS INSTALLED
WITH THE HOOK IN THE OPPOSITE
DIRECTION, THE UPPER END OF
THE SPRING WILL RUB INSIDE
THE CLEVIS OF THE CRANK.
Main Landing Gear Door Lock Release Actuator Installation Figure 401
CRANK
BOLT
DOOR LOCK RELEASE ACTUATOR
BOLT
32-35-03
ALL ú ú 01 Page 402 ú Sep 20/90
A
757 MAINTENANCE MANUAL
S 864-026
(5)
Remove the pressure from the left hydraulic system and the hydraulic reservoir (AMM 29-11-00/201).
D.
Remove the Actuator
S 034-027
(1)
Disconnect the hydraulic lines from the actuator.
S 494-028
(2)
Install plugs in the lines and fittings.
S 034-029
(3)
Remove the bolt to disconnect the rod end of the actuator from the crank (Detail A).
S 024-030
(4)
Remove the bolt to disconnect the head end of the actuator from the support, and remove the actuator.
TASK 32-35-03-404-020
3. Install the Actuator that Releases the Door Lock for the Main Landing Gear__________________________________________________________________________ (Fig. 401)
A. Consumable Materials
(1)
D00148 Fluid, Hydraulic - BMS 3-11, Type IV,
Class 1
B.
References
(1)
AMM 12-12-01/301, Hydraulic Systems
(2)
AMM 24-22-00/201, Electrical Power - Control
(3)
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System
(4) 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(109)
