32-14-00
ALL ú ú 13 Page 537 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(2) S 095-260Do this task: "Removal of the Door Locks on the Wing Landing Gear" (AMM 32-00-30/201).
(3) S 095-261Do this task: "Removal of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).
S 865-262
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.
(4) Pressurize the hydraulic systems No. 1 and No. 4 (AMM 29-11-00/201).
S 865-158 WARNING: MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE CLEAR OF LANDING
_______ GEAR AND DOOR OPERATION PATH. IF YOU MOVE THE GEAR AND DOORS TOO QUICKLY, YOU CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(5) Move the control handle of the landing gear to the "DN" position.
S 865-263 WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(6) Install the ground locks in all landing gear (AMM 09-11-00/201).
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32-14-00
ALL ú ú 13 Page 538 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 865-160
(7)
Remove the pressure from hydraulic systems No. 1 and 4 (AMM 29-11-00/201).
S 865-161
(8)
Put the weight of the airplane back on the landing gear (AMM 07-11-01/201).
TASK 32-14-00-825-280
3. Adjustment - Body Gear Doors After Actuator Replacement_______________________________________________________
A. General
(1)
Do this procedure after the removal and installation of the door actuator for the body landing gear.
B.
Special Tools and Equipment
(1)
G12001-4 Rigging Pins, BD-1 and BD-2, 0.1885 (+0.003/-0.000) inch
C.
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
(4)
IPC 32-14-01 Fig. 1, IPC 32-14-02 Fig. 2,
IPC 32-14-05, IPC 32-14-06 Fig. 1
D.
Access
(1)
Location Zone 751 Body Landing Gear Door, Aft Inboard, LH 761 Body Landing Gear Door, Aft Inboard, RH
E.
Preconditions
S 865-285
(1)
This condition is necessary for this task:
(a)
Hydraulic power is available (AMM 29-11-00/201).
F.
Prepare for the adjustment
S 865-164
(1) Remove the pressure from the hydraulic systems No. 1 and 4 (AMM 32-00-30/201).
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32-14-00
ALL ú ú 12 Page 539 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 865-165
WARNING: MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE CLEAR OF DOOR
_______ OPERATION PATH. IF YOU MOVE THE DOORS TOO QUICKLY, YOU CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2)
Move the release handle of the ground door to the "Doors Open" position.
G.
Adjust the wheel well doors for the body landing gear.
NOTE: The subsequent steps are based on you have aligned the wing gear
____
door before you adjust the body gear doors.
S 825-166
(1) Increase the length of the actuator linkage rods (View B,
Figure 503) at the forward end of the door.
NOTE: Do that until the door stop pads will not touch the stops.
____ Get an out of fair condition of 0.10 inch minimum outside the airplane contour. The necessary length is 28.8 inches between the pin to pin centers of the rod assembly for a nominal starting point.
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