REPAIR REPAIRWORN INSTRPART
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27-51-24
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 866-009
(3)
Release the pressure in hydraulic system No. 1 (AMM 29-11-00/201).
E.
Inspect the Rollers
S 226-006
(1)
Examine the flight rollers and center toggle roller on the inboard foreflap carriages for worn areas:
(a)
Make sure there are no flat spots on the roller face wider than
0.32 inch (8.1 millimeters).
NOTE: Measure chord-wise along the roller surface.
____
(b)
If there is a flat spot larger than the limit, replace the worn roller (AMM 27-51-24/401).
F.
Put the Airplane Back to Its Usual Condition.
S 866-010
(1)
Provide pressure to hydraulic system No. 1 (AMM 29-11-00/201).
S 866-011
(2)
Put the flap control lever in the UP detent to retract the inboard trailing edge flaps.
(3)
Release the pressure from the hydraulic system (AMM 29-11-00/201).
S 866-013
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27-51-24
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
INBOARD FLAP OUTBOARD TRACK - REMOVAL/INSTALLATION
__________________________________________________
1. General
_______
A. There are two tasks in this procedure. There is one task for the removal and one task for the installation of an inboard flap outboard track.
(1)
The flap track removal has these parts:
(a)
The removal of the inboard flap
(b)
The removal of the inboard foreflap carriage and toggle
(c)
The removal of the flap transmission and ball screw
(d)
The removal of the flap track.
(2)
The flap track installation has these parts:
(a)
A check of the parts which attach the flap track for worn areas
(b)
The installation of the flap track
(c)
The lubrication of the flap track
(d)
The installation of the flap transmission and ball screw
(e)
The installation of the inboard foreflap carriage and toggle
(f)
The installation of the inboard flap.
TASK 27-51-25-004-001
2. Inboard Flap Outboard Track Removal
___________________________________
NOTE: The trailing edge of the fixed wing panels can droop when the
____
inboard trailing edge flap tracks are removed.
A. Special Tools and Equipment
(1)
ST2580-267-26 Spanner Wrench Adapter (2 necessary)
(2)
G27019-33 Flap Track Sling (Preferred)
(3)
G27019-1 Flap Track Sling (Optional)
(4)
Load Positioner - LL-5-3, Permadur, Box 1032,
Somerville, New Jersey 08876
B.
References
(1)
AMM 27-51-01/401, Inboard Flap
(2)
AMM 27-51-24/401, Inboard Foreflap Carriage and Toggle
(3)
AMM 27-51-33/401, Transmission
(4)
IPC 57-22-53, Fig. 1
C.
Access
(1)
Location Zone 563 Outboard Flap Track Fairing, Inboard Flap, LH (Track No. 3)
663 Outboard Flap Track Fairing, Inboard Flap, RH (Track No. 6)
D. Prepare for the Removal (Fig. 401)
NOTE: The flap track weighs approximately 600 pounds (270kg).
____ S 014-002
(1) Remove the inboard flap (Ref 27-51-01/401).
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