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747-400
MAINTENANCE MANUAL

Flap Torque Tube Installation
Figure 401 (Sheet 3)

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MAINTENANCE MANUAL

(SIMPLIFIED FOR CLARITY)
A-A

MEASURED IN THE HORIZONTAL AND VERTICAL PLANES AN EXCEPTION IS THE IS THE FARTHEST OUTBOARD ANGLE GEARBOX WHERE THE VERTICAL MISALIGNMENT CAN BE DOWN ONLY. IF A GEARBOX OR IDLER IS SHIMMED TO CORRECT THE MISALIGNMENT, DECREASE THE ANGLE TO 0` |0.75`, OR THE DIM. TO 0.00 |0.024 INCH (0.00 |0.6 mm). THE METHOD OF MEASUREMENT IS OPTIONAL
Flap Torque Tube Installation
Figure 401 (Sheet 4)

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 S 024-040
 (2)  Remove the torque tube.
 NOTE: Do not turn the flap drive system with the components
____ removed. It will be necessary to adjust the flap drive system.
 (a)  
Remove the screws which attach each spline coupling sleeve to the spline.

 (b)  
Move the sleeves of the torque tube splines to disconnect the torque tube.

 (c)  
Remove the torque tube.

 NOTE: Install a tag on the torque tube with its location
____ (right or left, inboard or outboard) and with the airplane effectivity.
 S 214-018
 (3)  
Examine the flap torque tube air sealer for worn areas or damage (Ref 27-51-20/601).

 S 684-019

 (4)  
If the seal assembly has worn or damaged areas, replace the seal assembly (Fig. 402):

 (a)  
Remove the lockwire.

 (b)  
Remove the nut.

 (c)  
Remove the seal assembly.

 (d)  
Remove the four bolts.

 (e)  
Remove the housing.

 TASK 27-51-20-404-020
 3. Flap Torque Tube Installation
_____________________________
 A. Special Tools and Equipment
 (1)
24ME65B00116 Inboard TE Flap Lock (2 necessary per flap)

 (2)
23ME65B00116 Outboard TE Flap Lock (2 necessary per flap)

 B.
Consumable Materials

 (1)  
D00633 Grease - BMS 3-33 (recommended)

 (2)  
D00013 Grease - MIL-G-23827 (alternative)

 C.
References

 (1)  
29-11-00/201, Main Hydraulic Supply System

 (2)  
32-00-30/201, Landing Gear Door Locks

 (3)  
IPC 27-51-60, Fig. 1

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MAINTENANCE MANUAL

SEAL ASSEMBLY

A-A

Flap Torque Tube Air Sealer Installation
Figure 402

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 D. Access
 (1)  Location Zone
 135 Wing Landing Gear Wheel Well, LH
 136 Wing Landing Gear Wheel Well, RH
 572 Landing Gear Support Beam and Rear Spar to
　
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