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hydraulic unit, which has its own pressurized hydraulic
reservoir. Its function is to decrease the landing
vibrations through the torque links.
The hydraulic fluid contents of the damper are shown
by the extension of the reservoir when it is
pressurized. When the contents are correct, the "FULL"
and "REFILL" level indications are in view.
REPLENISHMENT
The torque link damper must be fitted in accordance
with AMM 12-12-00, but we will consider the general
outline of the task:
- First remove the cap assembly from the check
valve, and bleed screw from the bleed plug,
then attach a hydraulic charging rig, using a
connector, to the check valve.
- Next fit a plastic tube, which is SKYDROL
compatible, to the bleed plug, this is to
collect expelled fluid, so place the free end
of the plastic tube into a suitable container.
- Using the hydraulic rig, apply a pressure of
2.42 to 2.75 bars (35.1 to 39.9 psi) and open
the bleed plug until an air free flow of fluid
is obtained.
- Increase the pressure to between 2.75 and 3.45
bars (39.9 and 50 psi) and close the bleed
plug, the reservoir can should rise slightly
above the "FULL" line (approximately 2.5 mm/0.1
inch).
- Remove the hydraulic rig and bleed tube, then
check for leakage over the next 3 minutes at
the same time ensuring the reservoir can
remains above the "FULL" line.
- Finally open the bleed plug slowly until
reservoir can is level with the "FULL"
line, then close and lock the bleed and cap
assemblies.
TMULDTT05-T02 LEVEL 3
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TMULDTT05-P02 LEVEL 3
MAIN LANDING GEAR SERVICING - TORQUE LINK DAMPER
EFFECTIVITY 32-00-00 Page 5
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THIS PAGE INTENTIONALLY LEFT BLANK
TMULDTT05 LEVEL 3
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32 - LANDING GEAR
32-00-00 MAIN LANDING GEAR SHOCK ABSORBER
SERVICING
CONTENTS:
General
Servicing Procedures
Nitrogen Filling of the MLG Two-Stage Shock Absorber
Pressure/Extension Graph - Values of the Film
TMULDGA06 LEVEL 3
EFFECTIVITY 32-00-00 Page 1
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MAIN LANDING GEAR SHOCK ABSORBER SERVICING
GENERAL
PA is the pressure measured at the top charging valve
(valve A).
PB is the pressure measured at the bottom charging
valve (valve B).
H is the height of the shock aborber measured as shown
bellow.
TMULDGA06-T01 LEVEL 3
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GENERAL - TOP CHARGING VALVE - BOTTOM CHARGING VALVE - H MEASUREMENT
TMULDGA06-P01 LEVEL 3
EFFECTIVITY 32-00-00 Page 3
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MAIN LANDING GEAR SHOCK ABSORBER SERVICING
SERVICING PROCEDURES
Inspection of the MLG Shock Absorber Before Flight
Check Charge and Nitrogen Filling of the MLG Two-Stage
Shock Absorber
TMULDGA06-T02 LEVEL 3
EFFECTIVITY 32-00-00 Page 4
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SERVICING PROCEDURES
TMULDGA06-P02 LEVEL 3
EFFECTIVITY 32-00-00 Page 5
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EFFECTIVITY Page 323
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MAIN LANDING GEAR SHOCK ABSORBER SERVICING
SERVICING PROCEDURES
Nitrogen Filling of the MLG Two-Stage Shock Absorber
(metric units)
TMULDGA06-T03 LEVEL 3
EFFECTIVITY 32-00-00 Page 6
Sep 30/98
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 32 LANDING GEAR
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