S 865-115
(17)
Remove the pressure from hydraulic systems No. 1 and 4 (AMM 29-11-00/201).
(a)
Make sure that the fairing adjustment is in the tolerance as shown on Fig. 507.
O.
Put the Airplane Back to Its Usual Condition.
S 865-116
(1) Pressurize the hydraulic systems No. 1 and 4
(AMM 29-11-00/201).
S 865-117
WARNING: MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE DOOR
_______ AND GEAR OPERATION PATHS. DO NOT MOVE THE DOORS AND GEAR TOO QUICKLY. IT CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2)
Move the control handle of the landing gear to the DOWN position to extend the wing landing gear.
S 495-118
(3)
Install the ground lockpins for the wing landing gear (AMM 09-11-00/201).
S 865-120
(4)
Remove the power from No. 1 and 4 hydraulic systems (AMM 29-11-00/201).
S 585-121
(5)
Put the airplane weight back on the landing gear and remove the jacks (AMM 07-11-01/201).
TASK 32-12-00-835-122
3. Wing Gear Doors Adjustment After Door Actuator Replacement
______________________________________________________________
A. General
(1) When you remove or replace the door actuator, you must adjust the doors again. This will make sure the door actuator is fully locked when the doors are closed and aligned. A different adjustment task is given for the door actuator replacement.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-12-00
ALL ú ú 04 Page 544 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(2)
During the adjustment procedure, use the safety precautions to prevent persons injury from the accidental door opening or closing.
(3)
To get the correct adjustment of the wheel well doors, it is important to have the symmetrical door position. Do all door open checks with the left and right wheel well doors open. Similarly, do all door close checks with the left and right wheel well doors closed.
B.
Special Tools and Equipment
(1)
G12001, Rigging Pin Kit ~.................................................................. | Rigging Pin No. | Minimum Length (Inches) | Diameter (Inches) | .................................................................... | WD-1 (LH) | 3.25 | 0.185 - 0.188 | .................................................................... | WD-2 (RH) | 3.25 | 0.185 - 0.188 | .................................................................... | WD-3 (LH) | 3.25 | 0.245 - 0.255 | .................................................................... | WD-4 (RH) | 3.25 | 0.245 - 0.255 | 2.................…...........................…....................1
C.
References
(1)
AMM 07-11-01/201, Jacking Airplane
(2)
AMM 09-11-00/201, Towing
(3)
AMM 24-22-00/201, Manual Control
(4)
AMM 29-11-00/201, Main Hydraulic Supply System
(5)
AMM 32-00-30/201, Landing Gear Door Locks
(6)
AMM 32-61-32/201, Wing Landing Gear Door Warning Sensor
D.
Access
(1)
Location Zone
731 Wing Landing Gear Door, Center Section,
Inboard Panel, LH
741 Wing Landing Gear Door, Center Section,
Inboard Panel, RH
732 Wing Landing Gear Door, Center Section,
Outboard Panel, LH
742 Wing Landing Gear Door, Center Section,
Outboard Panel, RH 733 Wing Landing Gear Door, Wing Inboard Panel 743 Wing Landing Gear Door, Wing Inboard Panel 734 Wing Landing Gear Door, Wing Outboard Panel 744 Wing Landing Gear Door, Wing Outboard Panel
E. Preconditions
S 865-206
(1)
These conditions are necessary for this task:
(a)
The airplane is on the ground.
(b)
Hydraulic systems No. 1 and 4 are servicable
(AMM 29-11-00/201).
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