(7)  
Install the bolt (10), washers (11 and 13), bushing (12), and nut

 (14)
 to connect the sequence valve linkage to the door actuator. Install the bushing behind the nut. Install washers behind both the bolt head and the nut.

 S 824-018
 (8)  
Adjust the main gear door and door actuator (Ref 32-12-00), unless you did the actuator adjustment per par. 1.

 S 434-019

 (9)  
Install the pin (6), washer (8), spacers (7), nut (9), and pin (9A) to connect the rod end of the actuator to the door beam (View B-B).

 S 424-049

 (10)
 Move the lever onto the splined shaft on the side of the actuator. Tighten the bolt.

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757 MAINTENANCE MANUAL
 S 824-021
 (11)
 Adjust the door lock release mechanism for the main landing gear (AMM 32-35-00/501).

 S 864-022

 (12)
 Make sure the pressure is removed from the left hydraulic system and hydraulic reservoir (AMM 29-11-00/201).

 S 434-023

 (13)
 Connect the hydraulic lines to the actuator.

 S 644-024

 (14)
 Lubricate the actuator at the grease fittings.

 S 864-025

 (15)
 Make sure the fluid in the hydraulic reservoir is at the correct level. Fill if it is necessary (AMM 12-12-01/301).

 S 094-026
 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.
 (16)
 Remove the door locks from the landing gear and close the doors (AMM 32-00-15/201).

 S 824-025

 (17)
 Make sure the door for the main landing gear is fully aligned with the structure. Adjust the door if it is necessary (AMM 32-12-00/501).

 G.
Do the test that follows to make sure the door operates correctly.

 S 864-027
 (1)  
Make sure the control lever for the landing gear is in the OFF position.

 (2)  
Pressurize the left hydraulic system (AMM 29-11-00/201).

 S 864-028
 

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MAINTENANCE MANUAL

 S 864-029
 (3)
Push the manual lock override and move the control lever to UP.

 (10)
 Make sure the doors for the main landing gear open.

 S 864-037

 (11)
 Pressurize the left hydraulic system (AMM 29-11-00/201).

 S 864-038

 (12)
 Move the DOORS CLOSE switch on the P72 panel to the DOORS CLOSE position.

 S 714-039

 (13)
 Make sure the doors close.

 S 864-041

 (14)
 Remove the pressure from the left hydraulic system (AMM 29-11-00/201).

 S 714-040

 (15)
 Make sure the doors for the main landing gear stay closed.

 S 864-042

 (16)
 Make sure the fluid in the hydraulic reservoir is at the correct level. Fill if it is necessary (AMM 12-12-01/301).

 (4)  S 714-030Make sure the doors for the main landing gear open.
 (5)  S 864-031Move the control lever to DOWN.
 (6)  S 714-032Make sure the doors close.
 (7)  S 864-033Remove the pressure from the left hydraulic system (AMM 29-11-00/201).
 (8)  S 714-034Make sure the doors stay closed.
 (9)  S 864-035Move and hold for two seconds the ALL DOORS OPEN and ALL DOORS ARM switches on the P72 electric service panel to their OPEN and ARM positions.
 S 714-036

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757 MAINTENANCE MANUAL
 MAIN GEAR TRUCK POSITIONER ACTUATOR - REMOVAL/INSTALLATION
__________________________________________________________
 1.  General
_______
 A.  This procedure provides two tasks. The first task removes the main gear truck positioner actuator. The second task installs the main gear truck positioner actuator.
 TASK 32-32-15-004-001
 2.  Remove the Main Landing Gear Truck Positioner Actuator
______________________________________________________
 A.  References
 (1)  
AMM 24-22-00/201, Electrical Power - Control

 (2)  
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System
　
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