_______ PRESSURIZED. YOU CAN CAUSE DAMAGE TO THE INTERNAL SEALS.
(d) Turn the piston rod end to adjust the clearance between the
spoiler and the flap. The rod end will move in or out of the
piston.
NOTE: Each 1/4 turn of the piston rod will change the____
clearance by approximately 0.14 inch. If you turn the
piston rod to change the clearance by 0.35 inch or more,
you must do the spoiler system adjustment
(AMM 27-61-00/501).
(e) If you removed the rod end or if you move the rod end out of
the piston 0.50 inch or more, fill the rod end with the
corrosion preventive compound before the adjustment.
NOTE: If the piston rod is not full of the corrosion____
preventive compound, there will be corrosion.
1) Remove the rod end from the spoiler and the control
package.
2) Fill the piston with the corrosion preventive compound.
3) Install the rod end.
(f) Engage the locking device with the piston rod.
(g) Apply a layer of the corrosion preventive compound to the
external threads.
(h) Tighten the checknut hand tight.
(i) Do this task: "Hydraulic System Pressurization"
(AMM 29-11-00/201).
(j) Put the speed brake control lever in the DOWN position to lower
the spoilers until the control packages are fully retracted.
(k) Make sure the clearance between the spoiler and the flap is in
the tolerances shown in Fig. 202. There is no specified
maximum clearance.
1) If the clearance is not in the tolerance, loosen the
checknut and adjust the spoiler again.
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27-61-05
ALL ú ú 01 Page 212 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 432-043
(12)
If the clearance is in the tolerance, tighten the checknut:
(a)
Tighten the checknut to 1200-1300 pound-inches(135.6-146.9Nm) (for spoilers No. 1, 2, 3, 4, 9, 10, 11 and 12).
(b)
Loosen the checknut and make sure the parts of the locking device stay engaged correctly.
(c)
Tighten the checknut to 1200-1300 pound-inches (135.6-146.9Nm).
1) Make sure the parts of the locking device stay engaged correctly.
(d)
Install the lockwire on the checknut and the locking device.
(e)
Clean all grease from the checknut and the locking device with naphtha.
(f)
Apply the silicone sealant on the checknut and the locking device.
S 862-118
(13)
Put the speed brake control lever in the DOWN position to lower the spoilers.
H.
Examine the Adjustment of the Input Rod
S 822-119
(1)
Examine the adjustment of the input rod if you installed a new input rod or if you changed the adjustment.
S 862-050
(2)
Move the captain's aileron control wheel to the neutral position as shown by the trim indicator decal on the control wheel.
(a)
Make sure you can install the rig pins A/S-18 or A/S-20 and A/S-22 or A/S-23 (0.309 to 0.311 inch diameter(7.85 to 7.9mm), minimum length 3.0 inches)(76.2mm) freely in the spoiler quadrant.
NOTE: Rigging pins are part of kit G12001-50.
____
(b) Remove the rig pins.
S 822-051
(3)
Adjust the input rod for spoilers No. 2 or 11:
(a)
Install a surface protractor on the spoiler and set it to zero.
(b)
Retract the outboard trailing edge flaps and find a reference point on the trailing edge of the spoiler.
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