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27-41-08 ALL ú ú 01 Page 505 ú Jun 18/01 BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. A 747-400 MAINTENANCE MANUAL HORIZONTAL STABILIZER TRIM HYDRAULIC MOTORS - REMOVAL/INSTALLATION __________________________________________________________________ 1. General_______ A. This subject has three tasks. There is one task each for the removal, the installation, and the operational test of the horizontal stabilizer trim hydraulic motor (which is referred to as the "hydraulic motor"). The procedure has these parts: (1) The removal of the hydraulic motor
(2) The installation of the replacement hydraulic motor
(3) An operational test of the hydraulic motor.
B. The removal and installation procedure is the same for the left and the right hydraulic motor.
TASK 27-41-10-004-001 2. Stabilizer Trim Hydraulic Motor Removal (Fig. 401)_______________________________________ A. Standard Tools and Equipment (1) Bucket - 1 gallon capacity (for hydraulic fluid)
(1) AMM 06-09-05/201, Body Section 48 Access Doors and Panels
(2) AMM 24-22-00/201, Manual Control
(3) AMM 29-11-00/201, Main Hydraulic Supply System
(4) AIPC 27-41-06, Fig. 1
(1) Location Zone 311 Area Aft of Pressure Bulkhead, LH 312 Area Aft of Pressure Bulkhead, RH
(2) Access Panel 312A Horizontal Stabilizer Jackscrew Access Door
D. Prepare for Removal
S 864-002 (1) Do this task to release the pressure in the hydraulic systems No. 2 and No. 3: "Remove Hydraulic Power" (AMM 29-11-00/201).
(2) Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
(3) Set the STAB TRIM 2 and 3 switches on the control stand to CUTOUT.
S 864-003 S 864-004 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-41-10 ALL ú ú 01 Page 401 ú Jun 18/01 BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. A 747-400 MAINTENANCE MANUAL
Horizontal Stabilizer Trim Hydraulic Motor Installation Figure 401 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-41-10 ALL ú ú 01 Page 402 ú Jun 10/88 BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. A 747-400 MAINTENANCE MANUAL 9. BOLT 9. BOLT5. BOLT 5. BOLT 10. WASHER 10. WASHER (2 LOCATIONS)
25. PLUG 11. O-RING 11. O-RING 10. WASHER 12. UNION 24. O-RING 23. NUT 13. ELBOW 10. WASHER22. ELBOW 14. NUT 21. O-RING 15. MOTOR 20. BACKUP RING 16. O-RING 19. ADAPTER 17. BACKUP RING
HYDRAULIC MOTOR B Horizontal Stabilizer Trim Hydraulic Motor Installation Figure 401 (Sheet 2) EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-41-10 ALL ú ú 01 Page 403 ú Feb 10/91 BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. A 747-400 MAINTENANCE MANUAL
SEAL DRAIN ADAPTER (EXAMPLE)
THE LEFT INSTALLATION IS SHOWN; THE RIGHT IS OPPOSITE. (ADAPTERS ARE INSTALLED ON THE OUTBOARD SIDES OF THE MOTORS AND POINT FORWARD) Horizontal Stabilizer Trim Hydraulic Motor Installation Figure 401 (Sheet 3) EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 4
