32-14-00
ALL ú ú 18 Page 535 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 865-317
(10)
Make sure the doors are in the locked position:
(a)
Reduce the hydraulic pressure to zero and vent both up and down ports on door actuator to return (reservoir) pressure.
(b)
Make sure the door is in the locked position.
S 225-143
(11)
Make sure that the proximity switch sensor for the body landing gear is in the limits shown (View A-A, Figure 504).
S 865-289
(12)
Increase the hydraulic pressure using a ground power cart to 3000 +/- 100 psi (AMM 29-11-00/201).
S 865-318
(13)
Move the ground door release handle to the "DOOR OPEN" position.
S 425-319
(14)
Connect the linkage rod for the wing door:
(a)
Install door locks for the body landing gear
(AMM 32-00-30/201).
(b)
Connect wing gear door actuator rod (AMM 32-12-02/401).
(c)
Remove door locks for the wing and body landing gear
(AMM 32-00-30/201).
S 865-320
(15)
Move the ground door release handle to the "DOOR CLOSE" position.
S 865-321
(16)
Move the control handle of the landing gear to the DN position.
S 865-146
(17)
Remove the pressure from the hydraulic system No. 1 (AMM 29-11-00/201).
S 865-322
(18)
Move the release handle of the landing gear to the "Doors Open" position.
S 485-323
(19)
Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).
(20)
Pressurize the hydraulic system No. 1 (AMM 29-11-00/201).
S 865-324
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32-14-00
ALL ú ú 12 Page 536 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 835-150
(21)
Make sure that you can put the rigging pin (BD-1 LH, BD-2 RH) through the two sides of the link carrier and the link assembly at point A (View C, Figure 503).
S 865-151
(22)
Remove the pressure from the hydraulic system No. 1
(AMM 29-11-00/201).
L.
Alternative Door Adjustment For The Shock Strut (Airplane Not Lifted)
NOTE: Use these procedures when it is not possible to lift the
____ airplane and when the exact length of the linkage rods and the stop pad positions are known. If the length of the linkage rods and the stop pad position are not known, you can not use this procedure.
S 835-152
(1)
Adjust the linkage rods (View B, Figure 505 and Figure 506) to the accurate same length as the replaced linkage rods in the initial installation.
S 225-153
(2)
Set the door stop pads in the same location relative to the outer skin as in the initial installation.
NOTE: All stop pads are on the inboard shock strut door.
____ It does not include the one which is on the support structures at the forward end of the door.
S 625-154
(3)
Apply a commercially avialable inspection putty to the door stops.
S 225-155
(4)
After the first flight, examine and measure the putty.
NOTE: Use the shimes to adjust the door stop pads accordingly.
____
M. Put the Airplane Back into its Usual Condition.
S 095-259
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ DOOR LOCKS FROM THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1) Do this task: "Removal of the Door Locks on the Nose Landing Gear" (AMM 32-00-30/201).
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