757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 2(56)

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 S 434-011
 (3)  Install the bolt, washers, and nut to connect the link to the sequence valve. Install washers behind both the bolt head and the nut.
 NOTE: For the left side installation, install the bolt head aft.
____ For the right side installation, install the bolt head forward.
 S 864-013
 (4)  
Make sure the pressure is removed from the left hydraulic system and hydraulic reservoir (AMM 29-11-00/201).

 S 434-012

 (5)  
Connect the hydraulic lines to the sequence valve.

 E.
Do a Check of the Sequence Valve for Correct Installation.

 S 864-014
 (1)  
Pressurize the left hydraulic system (AMM 29-11-00/201).

 S 864-015

 (2)  
Move the control lever for the landing gear from UP to DN three or four times. Return the lever to OFF.

 (3)
Make sure the sequence valve does not have any hydraulic leaks.

 S 794-016
 

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757 MAINTENANCE MANUAL
 F. Put the Airplane Back to Its Usual Condition
 S 614-017
 (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 094-018
 WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMGE TO EQUIPMENT.
 (2)  
Remove the door locks from the landing gear and close the doors (AMM 32-00-15/201).

 S 864-018

 (3)
Put the control lever for the landing gear to the DN position.

 S 864-019

 (4)  
Remove the power from the left hydraulic system if it is not necessary (AMM 29-11-00/201).

 

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757 MAINTENANCE MANUAL
 MAIN GEAR DOOR ACTUATOR - REMOVAL/INSTALLATION
______________________________________________
 1.  General
_______
 A.  This procedure has two tasks. The first task is for removal of the door actuator for the main landing gear. The other task is for installation of the door actuator.
 TASK 32-32-12-004-001
 2.  Remove the Door Actuator for the Main Landing Gear (Fig. 401)
__________________________________________________
 A.  Equipment
 (1)  
Door Hold-Open Strut, MLG - B32017-1

 B.  
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

 C.  
Access

 (1)  
Location Zones
 143 MLG Wheel Well (Left)
 144 MLG Wheel Well (Right)

 D.  
Prepare for the 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)  
Remove the pressure from the left hydraulic system and the hydraulic reservoir (AMM 29-11-00/201).

 

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757 MAINTENANCE MANUAL
SEQUENCE VALVE AND LINKAGE
SEE A BOLT
A
WHEEL WELL
STRUCTURE

1.
 WASHER

2.
 PIN

5A. PIN
5. NUT
3.
 SPACER

4.
 DOOR

(4 LOCATIONS)
ACTUATOR
FWD
A-A
7. SPACER
(4 LOCATIONS)

4. DOOR ACTUATOR
8. WASHER
6. PIN
9A. PIN
FWD JAMNUT
B B
9. NUT
CENTER HINGE
SUPPORT BEAM

A
B-B
Main Landing Gear Door Actuator Installation Figure 401
10.
 BOLT

11.
 WASHER

12.
 BUSHING

13.
 WASHER

14.
 NUT

A
LEVER
DOOR
ACTUATOR
FWD
CENTER HINGE SUPPORT BEAM

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