Airplane No.________
Hours ________
Hydraulic System No. 2 Internal Leakage Test Data and Analysis Sheet
Figure 603 (Sheet 1)
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29-11-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
Airplane No.________
Hours ________
Maximum
_____________________________________________Determine Individual Component Leakage Values: Actual Recommended
Flow___________ Flow_____________
Flow No. 8A, Right INBD Aileron Power Package
Null Leakage
(No. 7 ) -(No. 8 )______ ______ = 8A ______ 0.66 GPM
Flow No. 9A, Left OUTBD and Right INBD Aileron
Power Package Null Leakage
(No. 9 )(No. 7 ) -______ ______ = 9A ______
Flow No. 9B, Left OUTBD Aileron Power Package
Null Leakage
(No. 9A ) -______(No. 8A )______ = 9B ______ 0.66 GPM
Flow No. 11A, Spoiler Package 2 and 3 Internal
Leakage
(No. 10 ) -)(No. 11 ____________ = 11A______ 0.8 each GPM
Flow No. 12A, Spoiler Package 10 and 11
Internal Leakage
(No. 7 ) -)(No. 12 ____________ = 12A______ 0.8 each GPM
Flow No. 14A, Left Central Lateral Control
Package Null Leakage
(No. 13 ) -(No. 14 )____________ = 14A______ 0.53 GPM
Hydraulic System No. 2 Internal Leakage Test Data and Analysis Sheet
Figure 603 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400
MAINTENANCE MANUAL
GROUND
SERVICE
DISCONNECT
PRV - PRESSURE RELIEF VALVE SOV - SUPPLY SHUTOFF VALVE
Hydraulic System 2 Schematic
Figure 604
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747-400 MAINTENANCE MANUAL
TASK 29-11-00-706-138
8. Hydraulic System No. 3 - Full Internal Leakage Check
____________________________________________________
A. Special Tools and Equipment
(1)
4MIT65B80307-1 - Protractor
(2)
3MIT65B80307-1 - Control Wheel Adapter
B.
Standard Tools and Equipment
(1)
410DME-10AR Flowmeter (commercially available)
ACL Technologies Inc.
Santa Clara, CA 92705-5419
-
It must be able to pass a flow of 32 gpm at 3000 psig without damage.
-
It must measure a flow of 0.25 to 7.50 gpm with a precision of | 0.5% of the reading.
C.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 27-51-00/201, Trailing Edge Flap Systems
(3)
AMM 29-11-00/201, Main Hydraulic Supply System
(4)
AMM 29-11-23/201, Pressure Filter Module
(5) 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(63)