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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
E-E
WITH THE FLANGE AND DAMAGE IT DRIVE ROD LENGTH ON FAIRING NO. 4 AND 5
Inboard Flap Track Fairing Adjustment
Figure 501 (Sheet 3)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 825-049
(8)
On fairing number 4 and 5, adjust the drive rod assembly
(Fig. 501, View E):
(a)
Measure and record the length of the drive rod.
(b)
Adjust the length of the drive rod assembly.
NOTE: If the length of the drive rod is 30.8 inches (78.2 cm)
____ adjust the drive rod assembly to 34.97 +/- 0.03 inches
(88.82 +/- 0.08 cm) between the bearing centers. If the length of the drive rod is 29.8 inches (75.7 cm), adjust the drive rod assembly to 33.97 +/- 0.03 inches
(86.28 +/-0.08 cm) between the bearing centers.
S 435-010
(9)
Lift the fairing and install the drive rod.
S 435-035
(10)
Install the bolt, bushing, washers and the nut which attach the drive rod.
S 435-045
(11)
Tighten the nut to 200-300 pound-inches (23-34 N-m).
S 435-046
(12)
Install the cotter pin.
D.
Adjust the support linkage.
S 835-011
(1) Adjust the adjustable rod to get the lateral dimension as shown in Section C-C.
NOTE:____A piece of tape with two reference marks can be helpful. The marks must be 0.31 inch (7.9 mm) apart for flap tracks No. 4 and 5 or 0.43 inch (10.9 mm) for flap tracks No. 3 and 6.
(a)
Install a piece of tape adjacent to the connection with one reference mark aligned with the fairing lug.
(b)
With the flap retracted, use a straightedge to measure the flap track position in relation to the flap.
S 225-012
(2) Make sure that the clearance between the fairing and the flap lower surface is in the limits of section B-B and E-E.
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747-400 MAINTENANCE MANUAL
S 835-013
(3) If adjustment is necessary, adjust the drive rod and the support fitting at the same time to move the fairing into its position.
NOTE: On fairing No. 3 and 6, do not change the adjustment of the
____ drive rod end which is attached to the fixed drive link.
S 435-014
(4)
Install the bolt, bushing, washer and the nut which attach the drive rod.
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