32-31-01
 ALL  ú ú 01 Page 411 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (8)  Make sure you cannot move the control lever to the UP position.
 NOTE: Do not push the LOCK OVRD button.
____
 S 864-054
 (9)  Move the control lever to the DN position.
 S 864-120
 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.
 (10) Pressurize hydraulic system No. 1 and 4 (Ref 29-11-00/201).
 S 864-114
 WARNING: MAKE SURE YOU INSTALL THE GROUND LOCKS BEFORE YOU MOVE THE
_______ CONTROL LEVER. THE LANDING GEAR CAN MOVE IF YOU DO NOT INSTALL THE GROUND LOCKS. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (11) Move the control lever to the UP position.
 NOTE: You must push the LOCK OVRD button to do this.
____
 (a)  
Make sure the EICAS lower display for the gear shows that all five gear doors are OPEN (white, slashed boxes).

 (b)  
Move the control lever to the DN position. 1) Make sure that the landing gear doors close and lock. 2) Make sure the DOOR CLOSED indications come into view on the

 EICAS lower display for all landing gear. 3) Make sure that the gear DN indication comes into view on the main EICAS display.
 S 864-117
 (12)
 Push the lock override button.

 (13)
 Release the lock override button.

 (14)
 Make sure the lever lock solenoid extends and retracts correctly.

 S 864-052

 (15)
 Do this task:  "Put the Air/Ground Relay System in the Air Mode" (AMM 32-09-02/201).

 S 864-047
 S 714-046
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-31-01
 ALL  ú ú 01 Page 412 ú Oct 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 714-051
 (16)
 Make sure the lever lock solenoid retracts correctly. S 864-121

 (17)
 Move the control lever to the UP position.

 (a)  
Make sure the EICAS lower display for the gear shows that all five gear doors are OPEN (white, slashed boxes).

 (b)  
Move the control lever to the DN position. 1) Make sure that the landing gear doors close and lock. 2) Make sure the DOOR CLOSED indications come into view on the

 WARNING:_______ MAKE SURE YOU INSTALL THE GROUND LOCKS BEFORE YOU MOVE THE
 CONTROL LEVER.  THE LANDING GEAR CAN MOVE IF YOU DO NOT INSTALL
 THE GROUND LOCKS.  AN ACCIDENTAL RETRACTION OF THE LANDING GEAR
 CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.

 EICAS lower display for all landing gear. 3) Make sure that the gear DN indication comes into view on the main EICAS display.
 S 864-040
 (18)
 Do this task:  "Put the Air/Ground Relay System Back in the Ground Mode" (AMM 32-09-02/201).

 S 864-039

 (19)
 Do this task:  "Put Safety-Sensitive Systems Back to the Condition Before Air Mode Simulation" (AMM 32-09-02/201).

 S 734-027

 (20)
 Do the operational test of the alternate extension system of the doors for the nose landing gear (AMM 32-35-00/501).

 S 734-028

 (21)
 Do the operational test of the alternate extension system for the body landing gear (AMM 32-35-00/501).

 S 734-029

 (22)
 Do the operational test of the alternate extension system for the wing landing gear (AMM 32-36-00/501).

 S 734-030

 (23)
 Do the system test of the alternate control system for the leading edge flap (AMM 27-81-00/501).

 S 734-031

 (24)
 Do the system test of the alternate control system for the trailing edge flaps (AMM 27-51-00/501).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
　
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