S 864-003
(3)
Put the STAB TRIM NO. 2 and NO. 3 switches on the control stand in the CUTOUT position.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
55-10-01
ALL ú ú 01 Page 401 ú Oct 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
LEADING
A-A
Horizontal Stabilizer Leading Edge Installation
Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
55-10-01
ALL ú ú 01 Page 402 ú Jun 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 864-004
(4) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P7 Overhead Circuit Breaker Panel.
1) 7E7 STAP TRIM L S/O VALVE
2) 7E20 STAB TRIM R S/O VALVE
S 864-005
(5) Remove the electrical power if it is not necessary (Ref 24-22-00/201).
S 034-028
WARNING: MAKE SURE ALL PERSONS AND EQUIPMENT ARE AWAY FROM THE AREA
_______ BELOW THE LEADING EDGE. INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR IF THE EQUIPMENT FALLS.
(6)
Remove the fasteners that attach the parts of the leading edge to the horizontal stabilizer.
S 034-027
(7)
Remove the parts from the horizontal stabilizer.
NOTE: After you remove one part of the leading edge, you can
____ remove the remaining parts with the splice rib attached.
S 554-033
(8) Put a cover on the auxiliary spar if the parts of the leading edge will be off for a long time.
TASK 55-10-01-404-007
3. Install the Leading Edge
________________________
A. Equipment
(1) Safety Lanyard - 24MIT65B00002
B. Consumable Materials
(1)
A00247 Sealant - BMS 5-95
(2)
C00064 Alodine 1000 (clear)
C. References
(1)
24-22-00/201, Manual Control
(2)
51-21-04/701, Alodized Surfaces
(3)
51-31-01/201, Seals and Sealing
(4)
IPC 55-10-03 Fig. 1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
55-10-01
ALL ú ú 01 Page 403 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
D. Access
(1) Location Zone
331 Horizontal Stabilizer Leading Edge, Left
341 Horizontal Stabilizer Leading Edge, Right
E. Procedure
S 484-037
WARNING: USE A MAN LIFT TO ATTACH THE SAFETY HARNESS FITTINGS TO THE
_______ RECEPTACLES. MAINTENANCE PERSONS CAN FALL WHICH MAY CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
WARNING: DO NOT WALK ON THE HORIZONTAL STABILIZER WITHOUT A SAFETY
_______ HARNESS. MAINTENANCEE PERSONS CAN FALL WHICH MAY CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Attach the Flight Control Safety Lanyard to the horizontal
stabilizer (AMM 20-11-33/201).
S 434-012
(2)
Remove the cover from the auxiliary spar.
S 214-013
(3)
Examine the splice ribs for damage.
S 964-029
(4)
Repair or replace the damaged splice ribs.
S 214-014
(5)
Examine the nutplates and screws which attach the part of the leading edge to the horizontal stabilizer.
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 安定門 STABILIZERS(4)
