S 712-255

 (25)
 If needed, you may do an operational test of the extention and retraction (AMM 32-32-00/501).

 NOTE: The operational test will help you validate the assembly
____
 of the landing gear.

 S 082-259
 (26)
 Remove the jacks (AMM 07-11-01/201).

 (27)
 Do a Shock Strut Seal Leak Inspection.

 S 792-256
 

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 ú ú  ú 01.101 ú   Page 234Sep 28/02 

A

757 MAINTENANCE MANUAL
 MLG SHOCK STRUT INNER CYLINDER - REMOVAL/INSTALLATION
_____________________________________________________
 1.  General
_______
 NOTE: To do this procedure it will be necessary to lift the airplane to a
____ height that will allow the inner cylinder to be removed from the outer cylinder. The height necessary to do this can be at least 54 inches.
 A.  This procedure contains two tasks. The first task removes the MLG inner cylinder. Task two installs the MLG inner cylinder.
 TASK 32-11-25-404-160
 2.  MLG Inner Cylinder Removal
__________________________
 A.  Equipment
 (1)  
Shock Strut Drain Equipment, MLG/NLG - A32066-1

 (2)  
Shock Strut Lock Equipment, MLG - B32028-1

 B.  
References

 (1)  
AMM 07-11-01/201, Jacking Airplane

 (2)  
AMM 24-22-00/201, Electrical Power - Control

 (3)  
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems

 (4)  
AMM 32-00-15/201, Landing Gear Doorlocks

 (5)  
AMM 32-00-20/201, Landing Gear Downlocks

 (6)  
AMM 32-11-16/401, Main Gear Torsion Links

 (7)  
AMM 32-11-17/401, Main Gear Truck Assembly

 (8)  
AMM 32-11-19/401, Main Gear Brake Rod

 (9)  
AMM 32-32-15/401, Main Gear Truck Positioner Actuator

 C.  
Access

 (1)  
Location Zones
 211/212 Control Cabin
 731/741 Main Landing Gear (MLG)
 732/742 MLG Body Doors
 733/743 MLG Oleo Doors

 D.  
Prepare for the Removal of the Inner Cylinder

 S 494-031
 (1)  Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
 

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757
MAINTENANCE MANUAL

 S 494-032
 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 main landing gear and install the door locks (AMM 32-00-15/201).

 S 864-032

 (3)  
Remove the pressure from the left hydraulic system (AMM 29-11-00/201).

 S 864-035

 (4)  
Supply electrical power (AMM 24-22-00/201).

 S 864-036

 (5)  
Make sure this circuit breaker on the main power distribution panel, P6, is closed:

 (a)  
6F4, LANDING GEAR PARKING BRAKE VLV

 S 874-038
 (6)  
Push the two brake pedals fully and release. Push the pedals six times to bleed the hydraulic pressure from the parking brake lines. Make sure the PARK BRAKE indicator light on the quadrant stand panel, P10, is off.
　
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