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A
747-400 MAINTENANCE MANUAL
ENGINE NACELLE STRUT
SEE A
CASE HYDRAULIC FLUID
DRAIN TEMPERATURE
MODULE TRANSMITTER
VIEW LOOKING FORWARD
A
Hydraulic Fluid Temperature Transmitter Location Figure 1
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747-400
MAINTENANCE MANUAL
P5 OVERHEAD PANEL
SEE A
SEE B
SYSTEM FAULT LIGHT
FAULT SYS FAULT SYS HYD FAULT SYS SYS FAULT EDP OFF EDP OFF EDP OFF EDP OFF
PRESS PRESS PUMPS PRESS PRESS DEMOFF AUX DEM DEMOFF OFF DEM AUX
AUTO OFF ON OFF AUTO ON OFF AUTO ON OFF AUTO ON SOV SOV SOV SOV
RSVR DEMAND
PRESS
AUX AUX 12 34
0.75 0.75 QTY 0.10RF 1.35
ON ON ON ON
3250 3250 PRESS 0 3250
ENGINE
50 50 TEMP 10 50 1 234
PRESS PRESS PRESS PRESS
HYDRAULIC CONTROL MODULE
EICAS HYD PAGE
A
(AUXILIARY EICAS DISPLAY) B
Hydraulic Pressure Indication Figure 2
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MAINTENANCE MANUAL
Hydraulic Fluid Overheat Warning System Simplified Schematic
Figure 3
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747-400 MAINTENANCE MANUAL
HYDRAULIC FLUID OVERHEAT WARNING SYSTEM - ADJUSTMENT/TEST
____________________________________________________________
1. General_______
A. This procedure has one task. This task does a test of the hydraulic fluid temperature indication system.
B. You must open the doors in the trailing edge fairing to get access for this task.
TASK 29-32-00-705-001
2. Hydraulic Fluid Temperature Indication System Test__________________________________________________
A. Standard Tools and Equipment
(1)
Variable Resistor - 100-200 ohms
B.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 29-32-02/401, Temperature Transmitter
(3)
AMM 54-62-00/201, Nacelle Strut Access Doors
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 454AL Trailing Edge Fairing Doors - System 1 464AL Trailing Edge Fairing Doors - System 2 474AL Trailing Edge Fairing Doors - System 3 484AL Trailing Edge Fairing Doors - System 4
D.
Procedure
S 015-002
(1)
Open the doors in the applicable trailing edge fairing (AMM 54-62-00/201).
(2)
Supply electrical power (AMM 24-22-00/201).
S 865-003
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