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DESCRIPTION
The throttle valve is installed on the green supply
port (A) of the automatic selector.
It decreases the speed of movement of the main slide
valve of the selector when the brake selector valve
is de-energized.
TMULDBXZZ-T05 LEVEL 3
EFFECTIVITY 32-42-00 Page 10
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 32 LANDING GEAR
UF94200
EFFECTIVITY Page 196
ALL
NORMAL BRAKING COMPONENTS - THROTTLE VALVE
TMULDBXZZ-P05 LEVEL 3
EFFECTIVITY 32-42-00 Page 11
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 32 LANDING GEAR
UF94200
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NORMAL BRAKING COMPONENTS
MANIFOLD NORMAL BRAKE SERVOVALVES
IDENTIFICATION
FIN: 2613GM (LH), 2612GM (RH)
LOCATION
ZONE: 731, 741
DESCRIPTION
The manifold is equipped with two servovalves, two
pressure transducers, two hydraulic fuses and one
filter on the supply line of the manifold.
NORMAL BRAKE SERVOVALVES
IDENTIFICATION
FIN: 15GG (WHEEL 1), 17GG (WHEEL 2), 16GG (WHEEL 3),
18GG (WHEEL 4)
LOCATION
ZONE: 731, 741
DESCRIPTION
There are four servovalves, one for each brake.
The brake servovalve supplies a pressure inversely
proportional to the current which passes through the
control coil used.
TMULDBXZZ-T06 LEVEL 3
EFFECTIVITY 32-42-00 Page 12
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 32 LANDING GEAR
UF94200
EFFECTIVITY Page 198
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NORMAL BRAKING COMPONENTS - MANIFOLD NORMAL BRAKE SERVOVALVES - NORMAL BRAKE SERVOVALVES
TMULDBXZZ-P06 LEVEL 3
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 32 LANDING GEAR
UF94200
EFFECTIVITY Page 199
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NORMAL BRAKING COMPONENTS
NORMAL BRAKE SERVOVALVES (CONTINUED)
CROSS SECTION
The current of the control coil in use (either system
1 or 2) moves a flapper located between two jets.
This modifies the sections of the fluid passage at the
jets, and consequently the pressure in the control
chambers of the slide valve.
With zero current, the supplied pressure is equal to
the pressure supplied to the servovalve.
If there is no supply pressure, the servovalve connects
the brake to the reservoir return system.
TMULDBXZZ-T07 LEVEL 3
EFFECTIVITY 32-42-00 Page 14
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 32 LANDING GEAR
UF94200
EFFECTIVITY Page 200
ALL
NORMAL BRAKING COMPONENTS - NORMAL BRAKE SERVOVALVES CROSS SECTION
TMULDBXZZ-P07 LEVEL 3
EFFECTIVITY 32-42-00 Page 15
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 32 LANDING GEAR
UF94200
EFFECTIVITY Page 201
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NORMAL BRAKING COMPONENTS
PRESSURE TRANSDUCERS
IDENTIFICATION
FIN: 11GG (WHEEL 1), 13GG (WHEEL 2),
12GG (WHEEL 3), 14GG (WHEEL 4)
LOCATION
ZONE: 731, 741
DESCRIPTION
The normal brake pressure transducers are installed
on the manifold of the normal brake servovalve, one
downstream of each servovalve.
The integrated-logic transducer supplies a DC voltage
between 1 and 5V for a pressure between 0 and 3000 psi
(206 bars).
The zero has been shifted to enable BITE testing.
HYDRAULIC FUSES
IDENTIFICATION
FIN: 2618GM (WHEEL 1), 2616GM (WHEEL 2),
2617GM (WHEEL 3), 2619GM (WHEEL 4)
LOCATION
ZONE: 731, 741
DESCRIPTION
A hydraulic fuse, installed between the brake
servovalve and the brake, stops the flow in the line
if the leakage exceeds 1.32 U.S. gal/mn (5 l/mn).
The valve is reset when you depressurize the hydraulic
systems and when you open the bleed screw.
TMULDBXZZ-T08 LEVEL 3
EFFECTIVITY 32-42-00 Page 16
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 32 LANDING GEAR
UF94200
EFFECTIVITY Page 202
ALL
NORMAL BRAKING COMPONENTS - PRESSURE TRANSDUCERS - HYDRAULIC FUSES
TMULDBXZZ-P08 LEVEL 3
EFFECTIVITY 32-42-00 Page 17
Jun 30/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 32 LANDING GEAR
UF94200
EFFECTIVITY Page 203
ALL
NORMAL BRAKING COMPONENTS
BRAKE PEDAL TRANSMITTER UNIT
IDENTIFICATION
FIN: 9GG
LOCATION
ZONE: 121
DESCRIPTION
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