E.  
Access

 (1)  
Location Zone
 512 Krueger Flap Inboard, LH
 513 Krueger Flap Midflap, LH
 514 Krueger Flap Outboard, LH
 612 Krueger Flap Inboard, RH
 613 Krueger Flap Midflap, RH
 614 Krueger Flap Outboard, RH

 F.  
Install the Krueger Flap Rotary Actuator

 S 424-013
 (1)  
Install the rotary actuator (Fig. 401):

 (a)  
Apply a layer of the corrosion preventive compound to the bolts, nuts and bolt holes.

 (b)  
Align the actuator mounting holes with the structural fittings.

 (c)  
Install two mounting bolts (2) and four washers (3).

 (d)  
Install the self-locking nuts (4).

 (e)  
If you use rigging tool 12MIT65B04017, install the rotary actuator as follows: 1) Adjust the retract stop:

 a)  Install the tool hinge pins in the ends of the flap hinge bolts to attach the rigging tool (Fig. 402). b) Connect the tool links to the rotary actuator arms with the pins. c) Manually turn the actuator to the retracted position until the rigging bar touches the lower wing structure. d) Move the shims until you get a distance of 0.03 to 0.05 inch between the structure and the stop.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-81-06
 ALL  ú ú 01 Page 407 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 2) Make sure the LE flaps are in the pneumatic extended position. 3) Make a mark on the actuator spline tooth and the adjacent
 structure. 4) Remove the rigging tool. 5) Manually turn the rotary actuator in the extended direction
 25 times plus 7 spline teeth. 6) Connect the drive shafts (5) to the rotary actuator (1). 7) Align the actuator link (10) with the rotary actuator (1). 8) Attach the rotary actuator to the link with the washer (7),
 bushing (9) and bolts (6), (Section A-A, Fig. 401). 9) Tighten the nuts (8) to 290-410 pound-inches.
 (f)  If you use rigging set G27013, install the Krueger flap rotary actuator as follows: 1) Align the actuator link (10) with the actuator arm (1). 2) Attach the rotary actuator to the actuator link with the
 washer (7), bushing (9) and bolts (6), (Section A-A,
 Fig. 401). 3) Tighten the nuts (8) to 290-410 pound-inches. 4) Make sure the flap control lever is in the 5-unit detent. 5) Hold the applicable G27013 gage by hand against the points
 between the rotary actuator and actuator link (Fig. 402). 6) Manually turn the rotary actuator to the full extension until it touches the G27013 gage. 7) Connect the drive shafts (5) to the rotary actuator (1).
 S 094-014
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT DO THE STEPS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  
Do this task for all extended leading edge: "Safety Lock Removal and Leading Edge Flap Activation" (AMM 27-81-00/201).

 (3)  
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).

 S 864-015
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-81-06
 ALL  ú ú 01 Page 408 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 864-016
 CAUTION: DO NOT ELECTRICALLY EXTEND OR RETRACT THE FLAPS MORE THAN ONE
_______ TIME IN 5 MINUTES. DAMAGE TO THE MOTOR CAN OCCUR IF THE MOTOR BECOMES TOO HOT.
 (4)  
Operate the krueger flaps electrically:

 (a)  
Push the ALTN FLAPS ARM switch to put the flap system in alternate control.

 (b)  
Turn the ALTN FLAPS EXT/RET switch to the RET position then the EXT position.

 (c)  
Turn the ALTN FLAPS EXT/RET switch to the OFF.

 (d)  
Push the ALTN FLAPS ARM switch to put the flap system in the usual control.

 S 714-017
 (5)  Make sure the rotary actuator can move freely with no unusual noise.
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 飛行操縱 FLIGHT CONTROLS 7(133)