(a)
Examine the door latches on the trailing edge fairing for cracks and wear.
(b)
Make sure that all latch assemblies are installed.
(c)
Repair and adjust the latches if it is necessary (AMM 54-62-03/501).
S 416-469
CAUTION: MAKE SURE YOU LATCH THE FAIRING DOORS ON THE TRAILING EDGE
_______ CORRECTLY. DAMAGE CAN OCCUR IF THE DOORS OPEN DURING A FLIGHT.
(45)
Close the doors on the trailing edge fairing (AMM 54-62-00/201).
S 976-470
(46)
Write the flow values on Fig. 607. Compare the measured flows to the maximum recommended flows. Replace the applicable components until the total system internal leakage is less than 5 GPM.
NOTE: If the result of a flow calculation is a negative number,
____ it is possible that the component has a null leakage of a control valve that is more than the recommended flow. Replace these components because they have too much piston seal leakage.
TASK 29-11-00-206-700
10. Differential Pressure Indicators Inspection for the Pressure and Return
_______________________________________________________________________ Filters
_______
A. References
(1)
AMM 29-11-00/201, Main Hydraulic Supply System
(2)
AMM 29-11-23/201, Pressure Module
(3)
AMM 29-11-29/201, Return Module
(4)
AMM 54-62-00/201, Nacelle Strut Access Panels
(5)
AMM 54-62-02/501, Nacelle Strut Access Doors
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29-11-00
ALL ú ú 01 Page 674 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
Record Test Flow Data:
Flow No. 1 _________________
Flow No. 2 _________________
Flow No. 3 _________________
Flow No. 4 _________________
Flow No. 5 _________________
Flow No. 6 _________________
Flow No. 7 _________________
Flow No. 8 Flow No. 9 Flow No. 10 Flow No. 11 Flow No. 12 Flow No. 13
Maximum
_____________________________________________Determine Individual Component Leakage Values: Actual Recommended
Flow___________ Flow_____________
Flow No. 2A, OUTBD Trailing Edge Flap Motor
(No. 1 ) -(No. 2 )____________ = 2A ______ 1.49 GPM
Flow No. 3A, OUTBD Trailing Edge Flap Control
Valve Null Leakage
(No. 2 ) -(No. 3 )______ ______ = 3A ______ 1.59 GPM
Flow No. 4A, Empennage Gross Flow including
Right OUTBD Elevator, Right INBD Elevator
and Lower Rudder
(No. 3 ) -(No. 4 )____________ = 4A ______
Flow No. 5A, Right INBD and Right OUTBD Elevator
Power Package Null Leakage INBD 1.06 GPM
(No. 5 )(No. 3 ) -______ ______ = 5A ______ OUTBD 0.8 GPM
Flow No. 5B, Lower Rudder Null Leakage
(No. 4A ) -(No. 5A )______ ______ = 5B ______ 1.06 GPM
Flow No. 6A, Lateral System Gross Leakage
including Right Central Lateral Control
Package, Right INBD Aileron, Right OUTBD
Aileron and Spoilers 5 and 8
(No. 3 ) -(No. 6 )______ ______ = 6A ______
Airplane No.________
Hours ________
Hydraulic System No. 4 Internal Leakage Test Data and Analysis Sheet
Figure 607 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-11-00
ALL ú ú 01 Page 675 ú Feb 10/93
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
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