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FLUID SAMPLING VALVE
IDENTIFICATION
FIN: 3187GM
LOCATION
ZONE: 196
DESCRIPTION
The sampling valve makes it possible to take samples
of fluid for analysis with the system at full pressure.
The end cap provided with a slot is used as a tool to
open the valve.
TMUHYDK03-T03 LEVEL 3
EFFECTIVITY 29-13-00 Page 6
Jul 31/98
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 156
ALL
YELLOW SYSTEM COMPONENTS - HP MANIFOLD
TMUHYDK03-P03 LEVEL 3
EFFECTIVITY 29-13-00 Page 7
Jul 31/98
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 157
ALL
YELLOW SYSTEM COMPONENTS
PRESSURE RELIEF VALVE
IDENTIFICATION
FIN: 3063GM
LOCATION
ZONE: 196
DESCRIPTION
The pressure relief valve protects the system from
overpressure.It opens at 237 bar (3436 psi) and closes
at 220 bar (3190 psi).
LEAKAGE SOLENOID VALVE
IDENTIFICATION
FIN: 3150GP
LOCATION
ZONE: 196
DESCRIPTION
The leakage solenoid valve controls the fluid flow to
the leakage measurement system manifold.It is normally
open. During cargo doors operation the valve is closed
to avoid hydraulic pressure to the flight controls
users.
TMUHYDK03-T04 LEVEL 3
EFFECTIVITY 29-13-00 Page 8
Jul 31/98
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 158
ALL
YELLOW SYSTEM COMPONENTS - HP MANIFOLD
TMUHYDK03-P04 LEVEL 3
EFFECTIVITY 29-13-00 Page 9
Jul 31/98
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 159
ALL
YELLOW SYSTEM COMPONENTS
PRESSURE SWITCHES
IDENTIFICATION
FIN: 3151GN, 10CE-3
LOCATION
ZONE: 196
DESCRIPTION
The two pressure switches monitor the system pressure,
and send a signal at both low and high pressure.
The pressure switch 3151GN sends information to the
FWC, the flight control system and the auto flight
system.
The pressure switch 10CE-3 sends information to the
flight control system only.
ACCUMULATOR
IDENTIFICATION
FIN: 3070GM
LOCATION
ZONE: 196
DESCRIPTION
The accumulator is of the cylindrical type with an
internal bladder. The metal body has an outer layer
of kevlar to make it stronger. The accumulator is
precharged with nitrogen to 130bar (1885psi) at 20oC.
It holds 1liter (0,26 US gal) of usable fluid when it
is full. The bladder is made of rubber and isolates
the nitrogen gas from the hydraulic fluid. A nitrogen
charging valve (shrader type) and a direct reading
pressure gage are installed on the accumulator.
TMUHYDK03-T05 LEVEL 3
EFFECTIVITY 29-13-00 Page 10
Jul 31/98
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 160
ALL
YELLOW SYSTEM COMPONENTS - HP MANIFOLD
TMUHYDK03-P05 LEVEL 3
EFFECTIVITY 29-13-00 Page 11
Jul 31/98
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 161
ALL
YELLOW SYSTEM COMPONENTS
ELECTRIC PUMP PROTECTION
IDENTIFICATION
FIN: 3807GX, 3808GX
LOCATION
ZONE: 126
DESCRIPTION
A Current Transformer and a Phase Unbalance Detector
give protection if there is a fault in the electric
pump motor or in the supply.The Current Transformer
compares the flow of current in each phase of the AC
motor supply. If a difference is detected the Current
Transformer sends a signal to the phase unbalance
detector which stops the supply of electrical power
to the electric pump. A test pushbutton is provided
on the Phase Unbalance Detector to simulate a
malfunction. An indicator light comes on to show that
both units have operated correctly.
TMUHYDK03-T06 LEVEL 3
EFFECTIVITY 29-13-00 Page 12
Jul 31/98
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
UF94200
EFFECTIVITY Page 162
ALL
YELLOW SYSTEM COMPONENTS - ELECTRIC PUMP PROTECTION
TMUHYDK03-P06 LEVEL 3
EFFECTIVITY 29-13-00 Page 13
Jul 31/98
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 29 HYDRAULIC POWER
　
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