B.
References
(1)
AMM 29-11-00/201, Main Hydraulic Supply System
(2)
AMM 29-17-01/201, Reservoir Pressurization Module
(3)
AMM 36-00-00/201, Pneumatic System
(4)
AMM 54-51-02/401, Nacelle Strut Attach Pin/Bolt
(5)
AMM 54-62-00/201, Nacelle Strut Access Panels
(6)
IPC 29-11-01 Fig. 1 (Outboard), IPC 29-11-01 Fig. 5 (Inboard)
C.
Access
(1)
Location Zone
454 System 1 - Strut Aft Fairing
464 System 2 - Strut Aft Fairing
474 System 3 - Strut Aft Fairing
484 System 4 - Strut Aft Fairing
(2)
Access Panel
454A Trailing Edge Fairing Doors - System 1
464A Trailing Edge Fairing Doors - System 2
474A Trailing Edge Fairing Doors - System 3
484A Trailing Edge Fairing Doors - System 4
D.
Procedure
S 014-002
(1) Open the fairing doors on the trailing edge of the strut (AMM 54-62-00/201).
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29-11-01
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
OUTBOARD HYDRAULIC RESERVOIR
SEE A
SIGHT GLASS
SIGHT
FWD GLASS
SAMPLE
1
VALVE
FWD
INBOARD
HYDRAULIC
TRANSMITTER FOR
RESERVOIR DRAIN THE HYDRAULICVALVE FLUID QUANTITY
OUTBOARD HYDRAULIC RESERVOIR A
VIEW PORT FOR THE SIGHT GLASS
SIGHT GLASS 2
SAMPLE VALVE
TRANSMITTER FOR FWDDRAIN THE HYDRAULIC
VALVE
FLUID QUANTITY
INBOARD HYDRAULIC RESERVOIR
A
1 ON THE OUTBOARD HYDRAULIC RESERVOIRS, THE SIGHT GLASS IS ON THE OUTBOARD SIDE OF THE RESERVOIR
2 ON THE INBOARD HYDRAULIC RESERVOIRS, THE SIGHT GLASS IS ON THE INBOARD SIDE OF THE RESERVOIR
Hydraulic Reservoir Installation
Figure 401
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 864-003
WARNING:_______ MAKE SURE YOU RELEASE THE PNEUMATIC SYSTEM PRESSURE BEFORE YOU
OPEN THE HYDRAULIC SYSTEM. THE PNEUMATIC SYSTEM PRESSURIZES
THE HYDRAULIC RESERVOIR. HYDRAULIC FLUID THAT HAS PRESSURE CAN
CAUSE INJURY TO PERSONS.
(2) Release the pressure in the pneumatic system (AMM 36-00-00/201).
S 864-004
WARNING: MAKE SURE YOU RELEASE THE HYDRAULIC SYSTEM PRESSURE BEFORE YOU
_______ OPEN THE HYDRAULIC SYSTEM. HYDRAULIC FLUID THAT HAS PRESSURE CAN CAUSE INJURY TO PERSONS.
(3)
Release the pressure in the hydraulic system (AMM 29-11-00/201).
S 864-005
(4)
Operate the bleed valve on the reservoir pressurization module to release the pressure in the reservoir (AMM 29-17-01/201).
S 684-032
(5)
Drain the hydraulic fluid from the reservoir:
(a)
Put the container below the reservoir drain valve.
(b)
Open the drain valve to drain the hydraulic fluid from the reservoir into the container.
(c)
Close the drain valve when the reservoir is fully drained.
S 864-007
(6)
Open the E25 HYD FLUID QTY IND circuit breaker on the P414 main power distribution panel.
S 034-029
(7)
Disconnect the hydraulic reservoir:
(a)
Disconnect the electrical connector from the transmitter for the hydraulic fluid quantity.
(b)
Disconnect these lines from the hydraulic reservoir: 1) The ADP supply 2) The EDP supply 3) The pressure return 4) The pressure relief 5) The pneumatic supply.
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