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Main Pumps ..........................................................................................................13-2
Backup Pumps......................................................................................................13-2
Hydraulic Shutoff Valves .......................................................................................13-4
Accumulator and Reservoirs .................................................................................13-4
System 3 ...........................................................................................................................13-6
Description ..................................................................................................................13-6
Components and Operation........................................................................................13-7
Main Pump............................................................................................................13-7
Backup Pump........................................................................................................13-7
Accumulator and Reservoirs .................................................................................13-9
Controls and Indicators ................................................................................................... 13-10
HYDRAULIC Panel ................................................................................................... 13-10
Hydraulic Synoptic Page ........................................................................................... 13-11
EICAS Messages...................................................................................................... 13-13
13-ii For Training Purposes Only
May 03
HYDRAULIC POWER P I LOT T R A I N I N G GU I D E
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List of Figures
Graphic Title Figure
For Training Purposes Only
May 03
13-iii
P I LOT T R A I N I N G GU I D E HYDRAULIC POWER
Hydraulic System Distribution ...........................................................................................13-1
Hydraulic System 1 - Shown in-flight with Flaps Extended...............................................13-2
Hydraulic System 2 - Shown in-flight with Flaps Extended...............................................13-3
Hydraulic System 2 Equipment Rack................................................................................13-4
System 3 Schematic - Shown in-flight with Flaps Extended .............................................13-5
Hydraulic System 3 Accumulator Gauge ..........................................................................13-6
HYDRAULIC Panel ...........................................................................................................13-7
EICAS Hydraulic Synoptic Page Color Coding (1 of 2).....................................................13-8
EICAS Hydraulic Synoptic Page Color Coding (2 of 2).....................................................13-9
13-iv For Training Purposes Only
May 03
HYDRAULIC POWER P I LOT T R A I N I N G GU I D E
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HYDRAULIC POWER
For Training Purposes Only
May 03
13-1
P I LOT T R A I N I N G GU I D E
CHAPTER 13: HYDRAULIC POWER Introduction
The Challenger 604 is equipped with three independent hydraulic systems designated
as 1, 2 and 3. All systems operate at a nominal pressure of 3000 psi to power the
primary and secondary flight controls, landing gear, wheel brakes and nosewheel
steering. Operation is automatic with redundant hydraulic power sources for primary
flight controls and flight spoilers.
Each hydraulic system has two hydraulic pumps: a main pump (A) for normal power
and a backup pump (B) for supplementary power. System 1 and 2 main pumps are
engine-driven pumps (EDPs) and are designated as 1A and 2A. System 3 main pump
is an AC motor pump (ACMP) and is designated as 3A. All of the backup pumps are
ACMPs and are designated as 1B, 2B and 3B (see Figure 13-1).
Hydraulic System Distribution
Figure 13-1
2A Pump
3B Pump
1A Pump
3A Pump
1B Pump 2B Pump
LEGEND
P604_13_016
Hydraulic Reservoirs,
Accumulators And
Filters
System 1
System 2
System 3
HYDRAULIC POWER
13-2 For Training Purposes Only
May 03
P I LOT T R A I N I N G GU I D E
Systems 1 and 2
Description
The major components of systems 1 and 2 are an engine-driven pump (EDP), an AC
motor pump (ACMP), a hydraulic shutoff valve, an accumulator and a reservoir. All
components are located in the aft equipment bay except for the EDP, which is located
on the engine (see Figures 13-2 and 13-3).
Components and Operation
　
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