(b)
Lubricate the backup rings (7) and O-rings (6 and 8) with hydraulic fluid or Skydrol assembly lube.
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747-400 MAINTENANCE MANUAL
(c)
Install the backup rings, O-rings, adapters (4), and nuts (5) in the drive motor (9). Let the nuts (5) stay loose until the you connect the hydraulic lines (3).
(d)
Apply a thin layer of grease to the external spline of the motor.
(e)
Remove the cover from the flap power package opening.
(f)
Carefully install the drive motor into the power package. Make sure that the case drain is up.
(g)
Install the bolts (10 and 13), washers (11), and nuts (12).
NOTE: Install the bolt (13) through the motor into the power
____ package. Install the bolt (10) through the power package.
(h) Install the lockwire on the bolts (13).
S 434-014
(2)
Install the hydraulic lines:
(a)
Fill the drive motor with hydraulic fluid.
(b)
Remove the plugs from the hydraulic lines.
(c)
Align the hydraulic lines (3) with the adapters.
(d)
Tighten the nuts (5) on the adapters (4).
(e)
Connect the hydraulic lines (3) to the adapters (4).
(f)
Connect the case drain (2) to the drive motor (9).
S 864-007
(3) Pressurize hydraulic systems No. 1 and 4 (Ref 29-11-00/201).
S 874-017
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER.
(4)
Bleed the hydraulic system:
(a)
Extend and retract the flaps slowly.
S 214-009
(5)
Examine the hydraulic lines on the drive motor for leaks.
F.
Put the Airplane Back to Its Usual Condition
S 864-015
(1) Release the pressure in hydraulic systems No. 1 and 4
(Ref 29-11-00/201).
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S 094-010
WARNING:_______ CAREFULLY DO THE SPECIFIED TASK 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 AND DAMAGE TO EQUIPMENT.
(2)
Remove the door locks from the doors for the body landing gear (Ref 32-00-30/201).
S 614-012
(3)
Fill the hydraulic reservoirs if it is necessary (Ref 12-12-01/301).
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FLAP ALTERNATE DRIVE MOTOR - REMOVAL/INSTALLATION
_________________________________________________
1. General_______
A. There are four tasks in this procedure. There is one task for the removal and one task for the installation of each flap alternate drive motor. The procedures have these parts.
(1)
The installation of landing gear door safety locks
(2)
The removal of the electrical connector
(3)
The removal of the drive motor
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