(0.28
 cm) past the nut. 6) Repair the damage to the midflap cove panel. 7) Put the flap control lever in the UP detent to retract the

 flaps.
 8)  Measure the clearance between the midflap cove panel and the aftflap at the supports.
 9)  Release the pressure in hydraulic systems No. 2, 3 and 4 (AMM 29-11-00/201).
Add or remove shims at the lower forward end of the support
 strut to adjust the clearance:
 1)  Loosen the nut on the bolt which goes through the top aft end of the support strut.
 2)  Remove the bolt through the lower forward end of the support strut.
 3)  Add or remove the shims.
 4)  Apply a thin layer of wet primer to the shims.
 5)  Install the shims, filler, concave and convex washers and the bolt.
 6)  Tighten the nut on the bolt through the top aft end of the
 support strut.After the adjustment, make sure that the screws are installed correctly and that they do not extend too far. If the screws extend, they can touch the aftflap and cause damage.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-04
 ALL  ú ú 01 Page 522 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (g)  Make sure that the actuator rod ends are installed correctly and that the lockwire is installed.
 S 865-049
 (9)  
Make sure that these circuit breakers are closed:

 (a)  
P6, MAIN POWER DISTRIBUTION PANEL
 1) 6F9, ASYM/FAIL TE FLAP
 2) 6E1, PRI TE FLAP CONT AC
 3) 6E2, PRI TE FLAP CONT DC

 S 865-050
 (10) Pressurize hydraulic systems 2 and 3 (AMM 29-11-00/201).
 S 715-087
 CAUTION:_______MONITOR THE FLAP MOVEMENT CAREFULLY. THE FLAPS CAN BE DAMAGED BY INCORRECTLY ADJUSTED COMPONENTS.
 BEFORE YOU OPERATE THE FLAPS, MAKE SURE THAT THE HOOK ON THE GENEVA CAM MECHANISM IS IN THE RELEASED POSITION (DETAIL B, FIG. 502). THE FLAPS WILL BE DAMAGED IF YOU OPERATE THEM WITH THE HOOKS IN THE LATCHED POSITION.
 (11)
 Operate the flaps slowly.

 (a)  
Make sure that the flaps move freely.

 (b)  
Make sure that the aerodynamic seals are engaged.

 S 225-054
 (12)
 Put the flap control lever in the 30-unit detent.

 S 825-067

 (13)
 Make sure that the angular clearance between the ball screw nut and the ball screw downstops is a minimum of 1/4 turn.

 P.
Put The Airplane Back To Its Usual Condition.

 S 095-055
 (1)  
Remove the spoiler actuator locking tools or move the FLT CONTROL HYD POWER switches to NORM for systems No. 2 and 3.

 (2)
Pressurize hydraulic systems No. 2, 3, and 4 (AMM 29-11-00/201).

 S 865-056
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-04
 ALL  ú ú 01 Page 523 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
 (3)  S 865-057Move the flap control lever to the UP detent to retract the flaps.
 (4)  S 865-058Put the speed brake control lever in the DOWN detent to lower the spoilers.
 (5)  S 865-059Release the pressure in hydraulic systems No. 2, 3 and 4 (AMM 29-11-00/201).
 (6)  S 865-060Remove the DO-NOT-CLOSE tags and close these circuit breakers: (a) P7, Overhead Circuit Breaker Panel 1) 7G6, SPEED BRAKE AUTO CONT

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-04
 ALL  ú ú 01 Page 524 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 OUTBOARD FLAP - INSPECTION/CHECK
________________________________
　
中國航空網 m.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 4(111)