S 842-045
 (10)
 Push the NOSE GEAR DOOR UNSAFE LT PTT switch on the left equipment panel, P63, for the nose landing gear.

 (a)  
Make sure the DOOR UNSAFE light comes on.

 (b)  
Release the switch.

 (c)  
Make sure the light goes off.

 (11)
 Remove the door lock for the nose landing gear (Fig. 202).

 S 092-046
 

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757 MAINTENANCE MANUAL
 S 842-047
 (12)
 Make sure the control lever for the landing gear is in the DN position.

 E.
Put the Airplane Back to Its Usual Condition

 S 862-048
 WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM THE WHEEL WELL AREAS WHEN
_______ YOU CONNECT THE HYDRAULIC POWER AND CLOSE THE DOORS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)
Pressurize the left hydraulic system and reservoirs (Ref 29-11-00).

 S 842-049

 (2)  
Move the MAIN GEAR DOOR CLOSE switch to the DOOR CLOSE position, to close the main landing gear doors.

 S 412-051

 (3)  
Close the access door 198PR (Ref 06-41-00).

 S 842-053

 (4)  
Move the NOSE GEAR DOOR CLOSE switch to the DOOR CLOSE position, to close the nose landing gear doors.

 (5)
Remove the hydraulic power if it is not necessary (Ref 29-11-00).

 (6)
Remove the electrical power if it is not necessary (Ref 24-22-00).

 S 862-054
 S 862-055
 

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MAINTENANCE MANUAL

 LANDING GEAR DOWNLOCKS - MAINTENANCE PRACTICES
______________________________________________
 1.  General
_______
 A.  The downlocks for the nose and main landing gear must be installed on the airplane when:
 (1)  
There is maintenance done on the airplane

 (2)  
The airplane is parked and unattended

 (3)  
The airplane is parked for extended times

 (4)  
The airplane is towed.

 B.  
The downlocks are kept in the downlock pins bag in the flight compartment of the airplane.

 C.  
This procedure contains two tasks. Task one tells how to remove the downlocks. Task two tells how to install the downlocks.

 TASK 32-00-20-002-001
 2.  Remove the Downlocks for the Nose and Main Landing Gear (Fig. 201 and 202)
_______________________________________________________
 A.  Equipment
 (1)  
Downlock Removal/Installation Tool, MLG and
 NLG - A32015-9

 (2)  
Downlocks, MLG and NLG - B32001-4

 B.  
Access

 (1)  
Location Zones 211/212 Control Cabin 711 Nose Landing Gear (NLG) 713/714 NLG Doors Forward 715/716 NLG Doors Aft 731/741 Main Landing Gear (MLG) 732/742 MLG Body Doors 733/743 MLG Oleo Doors 311 Area Aft of the Pressure Bulkhead (Left) 757-300 only 312 Area Aft of the Pressure Bulkhead (Right) 757-300 only

 C.  
Remove the Downlocks

 S 842-002
 (1)
Make sure the control lever for the landing gear is in DN.

 S 092-003

 (2)  
Use the removal/installation tool to remove the downlocks from the main and nose landing gears.

 (3)  
Put the downlocks in the downlock pins bag.

 S 492-004
　
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本文鏈接地址：757 AMM 飛機維護手冊 起落架 CHAPTER 32 - LANDING GEAR 1(22)