0.005
30
(0.13)
(0.13)
0.005
31
0.005
32
(0.13)
0.005
33
(0.13)
34
PART WORN REPLACE PART WORN REPAIR REPAIR INSTR
X 1
X
X
X
X
X
X
X
X
X 1
A WORN PART IS REPAIRABLE. REFER TO THE OVERHAUL MANUAL FOR REPAIR INSTRUCTIONS.
Inboard Aftflap Drive Mechanism Wear Limits
Figure 601 (Sheet 9)
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ú 01 Page 611
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
OUTBOARD AFTFLAP DRIVE MECHANISM - REMOVAL/INSTALLATION
_______________________________________________________
1. General_______
A. There are 15 tasks in this procedure. There are tasks for the removal and tasks for the installation of the seven components of the outboard aftflap drive mechanism. There is also a task to adjust the aftflap drive mechanism.
B. There are removal and installation procedures for these components:
(1)
The Midflap Crank
(2)
The Pushrod
(3)
The Actuator Rod
(4)
The Midflap Crank Attach Fitting
(5)
The Geneva Cam
(6)
The Upstop Fitting
(7)
The Aft Roller Support
C.
When you remove or install the midflap crank, the pushrod, the actuator rod, or the midflap crank attach fitting, it is necessary to remove or install one or more of the others.
D.
You can remove and install the upstop fitting, and the aft roller support independently of all other components.
E.
You must first remove the midflap assembly and the carriage from the flap track to remove and install the geneva cam.
F.
The aftflap drive mechanism adjustment procedure has these parts:
(1)
The movement of the outboard flaps
(2)
The manual movement of the aftflaps
(3)
An adjustment of the length of the actuator rod
(4)
An adjustment of the bulb seal
(5)
The retraction of the outboard flaps.
TASK 27-51-40-004-001
2. Midflap Crank Removal_____________________
A. References
(1)
AMM 29-11-00/201, Main Hydraulic Supply System
B.
Access
(1)
Location Zone 567 Outboard Flap Track Fairing, Outboard Flap, LH, (Track No. 1) 565 Inboard Flap Track Fairing, Outboard Flap, LH, (Track No. 2) 665 Inboard Flap Track Fairing, Outboard Flap, RH, (Track No. 7)
667 Outboard Flap Track Fairing, Outboard Flap, RH, (Track No. 8)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
C. Procedure
S 864-002
(1) Do this task to pressurize hydraulic system No. 4: "Hydraulic System Pressurization" (AMM 29-11-00/201).
S 864-095
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER.
(2)
Put the flap control lever in the 30-unit detent to extend the outboard trailing edge flaps.
S 864-004
(3)
Do this task to depressurize hydraulic system No.4: "Hydraulic System Depressurization" (AMM 29-11-00/201).
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