S 864-024
 (19) If it is not necessary, remove the hydraulic power from system 4 (AMM 29-11-00/201).
 TASK 32-22-03-864-025
 4. Ground Door Release Handle Open Operation
__________________________________________
 A. References
 (1)  
AMM 09-11-00/201, Towing

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

 (3)  
AMM 32-00-30/201, Landing Gear Door Locks

 B.
Access

 (1)  
Location Zone
 711 Nose Landing Gear Door, Forward, LH
 712 Nose Landing Gear Door, Forward, RH

 C.
Procedure

 S 844-037
 (1)  
Make sure the forward door on the nose landing gear is clear before you operate the release handle.

 (a)  
Make sure the release handle is in the open position while you open the door.

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 32-22-03
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE MANUAL
 TASK 32-22-03-844-026
 5.  Ground Door Release handle Close Operation___________________________________________
 A. References
 (1)
AMM 09-11-00/201, Towing

 (2)
AMM 29-11-00/201, Main hydraulic Supply System

 (3)
AMM 32-00-30/201, Landing Gear Door Locks

 B.
Access

 (1)  
Location Zone
 711 Nose Landing Gear Door, Forward, LH
 712 Nose Landing Gear Door, Forward, RH

 C.
Procedure

 S 784-027
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)
Pressurize the hydraulic system No. 1 (AMM 29-11-00/201).

 (2)
Put the handle in the close position.

 (3)
Put the handle back to the keep position before the flight.

 S 844-035
 S 844-036
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-22-03
 ALL  ú ú 01 Page 408 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A