29-11-09
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 864-044
(7) Remove electrical power if it is not necessary for other operations (AMM 24-22-00/201).
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29-11-09
ALL ú ú 01 Page 411 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
GOVERNOR UNIT AND OIL PUMP DRIVE - REMOVAL/INSTALLATION
_______________________________________________________
1. General_______
A. This procedure contains the tasks to remove and install the governor unit and oil pump drive. The installation task also contains a test of the installation of the governor unit and oil pump drive.
B. You must examine and fill the turbine drive oil after you install the governor unit and oil pump drive.
C. The governor unit and oil pump drive is on top of the turbine drive for the air-driven pump (ADP). You can get access to the governor unit through the fairing doors on the trailing edge of the strut.
TASK 29-11-10-004-001
2. Governor Unit and Oil Pump Drive Removal (Fig. 401)________________________________________
A. References
(1)
AMM 36-00-00/201, Pneumatic System
(2)
AMM 54-62-00/201, Nacelle Strut Access Panels
(3)
IPC 29-11-41 Fig. 1
B.
Access
(1)
Location Zone
454 System 1 - Strut Aft Fairing
484 System 4 - Strut Aft Fairing
(2)
Access Panel
454A Trailing Edge Fairing Doors - System 1
484A Trailing Edge Fairing Doors - System 4
C.
Procedure
S 014-002
(1)
Open the fairing doors on the trailing edge of the strut (AMM 54-62-00/201).
S 024-034
(2)
Remove the governor unit and the oil pump drive:
(a)
Disconnect the two tubes from the tee on the governor unit and oil pump drive: 1) Disconnect the pressure tube for the control air that comes
from the air filter and the water separator for the speed control valve. 2) Disconnect the pressure tube for the control air that comes from the acceleration control unit.
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29-11-10
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747-400
MAINTENANCE MANUAL
SEE A
SEE B
TURBINE DRIVE
NOTE: SYSTEM 1 SHOWN, SYSTEM 4 EQUIVALENT.
FWD
A
Governor Unit and Oil Pump Drive Unit
Figure 401 (Sheet 1)
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29-11-10
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747-400
MAINTENANCE MANUAL
PRESSURE TUBE FOR GOVERNOR UNIT AND
THE CONTROL AIR OIL PUMP DRIVE
(3 LOCATIONS) TEE FITTING JAM NUT PACKING
GEARBOX OIL BREATHER
A
45` ELBOW PACKING
TURBINE DRIVE
A
OIL FILLER CAP
VIEW IN THE FORWARD DIRECTION
B
QUILL SHAFT GOVERNOR UNIT SPRING
AND OIL PUMP DRIVE
PACKING
MOUNTING BOLT WASHER (3 LOCATIONS)
TURBINE DRIVE GEARBOX
QUILL SHAFT FOR THE OIL PUMP
OIL PUMP SHAFT
OIL PUMP
A-A
Governor Unit and Oil Pump Drive Installation
Figure 401 (Sheet 2)
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29-11-10 中国航空网 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 液压 HYDRAULIC 1(126)
