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747-400
MAINTENANCE MANUAL
(c)
Use a spanner wrench to measure the friction torque of the nut.
(d)
Tighten the nut to 2250-2450 pound-inches more than the friction torque.
S 434-051
(10)
Install the transmitter control rod to the aileron leading edge.
S 434-043
(11)
Install the bonding jumper (9) at the outboard primary hinge:
(a)
Use the milliohmmeter to make sure there is a maximum of 0.010 ohms across the bonding jumpers.
S 864-021
(12)
Supply hydraulic power (system No. 1 or 3 for the left aileron, system No. 2 or 4 for the right aileron) (AMM 29-11-00/201).
S 494-022
(13)
Move the captain's and first officer's control wheels to the neutral position.
S 484-047
(14)
Attach the straightedge across the edges of thumbrests with a clamp on the control wheels.
S 864-023
(15)
Supply electrical power (AMM 24-22-00/201).
S 494-024
(16)
Operate the trim switch until you can easily install rig pin A/S-8 or A/S-9 (as applicable).
S 864-025
(17)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 494-035
(18)
If you use the inboard aileron rigging straightedge, install the tool as follows:
(a)
Set the tool at the centerline of the inboard primary hinge.
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747-400 MAINTENANCE MANUAL
S 494-036
(19)
If you use the inboard aileron rigging beam, do these steps:
(a)
Open the access panels (573AB, left, 673AB, right)
(AMM 06-09-08/201).
(b)
Hold the rigging beam manually at WBL 461.5 below the aileron and the wing.
S 224-027
(20)
Make sure the lower surface of the inboard aileron aligns with the lower surface of the wing trailing edge (use a tolerance of 0.25 inch) (Fig. 402).
(a)
If it is necessary, adjust the input control rod to align the aileron with the wing lower surface.
S 824-052
(21)
Adjust the transmitter(s) (AMM 27-18-00/501).
S 084-029
(22)
Remove the straightedges from the wing and the aileron control wheels.
S 714-030
(23)
Operate the aileron control wheel through a minimum of two full cycles.
S 714-034
(24)
Make sure the aileron operates correctly (Fig. 402).
(25)
Remove hydraulic power (AMM 29-11-00/201).
(26)
Close the access panels.
(27)
Install the coverplates.
S 864-031
S 414-032
S 434-045
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747-400 MAINTENANCE MANUAL
INBOARD AILERON - INSPECTION/CHECK
__________________________________
1. General_______
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