E.
Procedure

 S 614-010
 (1)  
Fill the actuator with hydraulic fluid. Put a plug in the hydraulic fittings.

 S 434-011

 (2)  
Put grease on the shoulder bolt (1). Install the shoulder bolt (1), washers (2 and 3), nut (4), and cotter pin to connect the head end of the actuator to the fitting. Make sure you put the two washers

 (2)
 behind the bolt head and one plain washer (3) behind the nut. Tighten the nut to 30-75 pound-inches (3.4-8.5 newton-meters) and install the cotter pin.

 S 434-012
 (3)  
Put grease on the shoulder bolt (6). Install the shoulder bolt (6), washers (7 and 8), nut (9), and cotter pin to connect the rod end of the actuator to the uplock assembly. Install with one washer (7) behind the bolt head and one plain washer (8) behind the nut. Tighten the nut to 30-75 pound-inches (3.4-8.5 newton-meters) and install the cotter pin.

 S 864-013

 (4)  
Make sure the pressure is removed from the left hydraulic system and the hydraulic reservoir (AMM 29-11-00/201).

 S 434-014

 (5)  
Connect the hydraulic lines to the actuator.

 S 644-015

 (6)  
Lubricate the actuator at the grease fittings.

 F.
Do a Check of the Actuator for Correct Installation.

 S 864-017
 (1)  
Make sure the control lever for the landing gear is in the DN position.

 (2)  
Make sure the door locks are installed.

 S 494-022
 

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757 MAINTENANCE MANUAL
 S 864-016
 (3)  
Pressurize the left hydraulic system (AMM 29-11-00/201).

 S 714-023

 (4)
Make sure the uplock assembly moves suddenly to the open position.

 S 794-018

 (5)  
Examine the actuator for hydraulic leaks.

 G.
Put the Airplane Back to Its Usual Condition

 S 614-019
 (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 094-020
 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 DAMAGE TO EQUIPMENT.
 (2)  
Remove the landing gear door locks and close the doors
 (AMM 32-00-15/201).

 S 864-021

 (3)  
Remove the pressure 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-OPERATED GEAR SEQUENCE VALVE - REMOVAL/INSTALLATION
__________________________________________________________________
 1.  General_______
 A.  This procedure contains two tasks. The first task is for removal of the door-operated gear sequence valve for the main landing gear. The second task is for installation of the door-operated gear sequence valve.
 TASK 32-32-05-004-001
 2.  Remove the Door-Operated Sequence Valve for 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

 B.  
Access

 (1)  
Location Zone
 143 Main Landing Gear Wheel Well

 C.  
Prepare for Removal

 S 494-002
 (1)  Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
SEQUENCE VALVE
BOLTS TO ATTACH THE VALVE TO THE STURCTURE
SEE  A SEQUENCE VALVE LINKAGE BOLT
DOOR ACTUATOR
FWD
A
Main Landing Gear Door-Operated Gear Sequence Valve Installation
Figure 401

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 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).
　
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