(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 27-61-00/501, Spoiler Control System
(4)
AMM 29-11-00/201, Main Hydraulic Supply System
E.
Access
(1)
Location Zone
585 Spoiler No. 1
584 Spoiler No. 2
583 Spoiler No. 3
582 Spoiler No. 4
682 Spoiler No. 9
683 Spoiler No. 10
684 Spoiler No. 11
685 Spoiler No. 12
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747-400 MAINTENANCE MANUAL
A
A
CONTROL
PACKAGE
PISTON
OUTBOARD
SPOILER TO FLAP MINIMUM CLEARANCEROD END
FLIGHT SPOILER
0.02 TO 0.16 INCH (0.51 TO 4.06 mm)
1
MIDFLAP
SEE A
EXAMPLE OF OUTBOARD FLIGHT SPOILERS
FWD NO. 1, 2, 3, 4, 9, 10, 11 AND 12
A-A
LOCKING
DEVICES
CHECKNUT
CONTROL PACKAGE PISTON PISTON ROD
ROD END
A
NOTE:THE AIRPLANE MUST BE SUPPORTED ON ITS LANDING GEAR WHEN YOU MEASURE THIS CLEARANCE.
THE SPOILER PANELS ARE NOT FLAT. MEASURE THE CLEARANCE
AT THE NEAREST POINT. THERE IS NO MAXIMUM CLEARANCE
BECAUSE OTHER PARTS OF THE PANEL CAN HAVE A GREATER
CLEARANCE. AFTER THE FIRST SPOILER CYCLE AFTER THE ADJUSTMENT,
THE MINIMUM CLEARANCE MUST BE 0.02 TO 0.16 INCH (0.51 TO 4.06 mm).
TO GET THIS DIMENSION, ADJUST THE CLEARANCE TO 0.08 TO 0.10 INCH (2.03 TO 2.54 mm).
1
Outboard Flight Spoiler-to-Flap Clearance
Figure 202
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A
747-400 MAINTENANCE MANUAL
F. Procedure
S 222-013
(1)
Make sure the distance from the centerline of the piston rod end bearing to the checknut is 2.40 |0.05 inches (61+/-1.27mm).
S 422-014
(2)
Install the spoiler control package (Fig. 201):
(a)
Put the control package (1) in its position and install the four bolts (3), washers (4), and nuts (5).
(b)
Tighten the nuts to 650-750 pound-inches (73.4-84.7Nm).
(c)
Apply the sealant to the bolts.
(d)
Connect the hydraulic lines (2) to the control package (1): 1) Remove the caps from the hydraulic lines and the ports of
the control package. 2) Connect the hydraulic lines to the control package.
S 432-015
(3)
Attach the input rod (6) to the control package input arm:
(a)
Put the input rod in its position.
NOTE:____Make sure the larger diameter rod end is forward. Make sure you can get access to the lubrication fittings on the rod ends.
(b)
Install the bolt (7), washer (8), and nut (9) on the rod.
(c)
Install the cotter pin.
S 432-115
(4)
Connect the piston rod end of the control package to the spoiler:
(a)
Install the bushings (10) in the piston rod end.
(b)
Install the bolts (13) washer (11), and nut (12).
(c)
Hold the bolt head with the spoiler socket adapter assembly.
(d)
Tighten the nut to 1200-1450 pound-inches(135.6-163.8Nm) above the run-on torque.
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747-400 MAINTENANCE MANUAL
(e) Remove the spoiler socket adapter assembly.
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