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electronic circuits and the pressure transducer
installed on the wheel. It transmits also the
tire pressure value from the wheel to the axle.
The frequency varies from 50kHz to 100kHz.
- an integrated electronic module which amplifies
the DC signal from the pressure transducer and
converts the voltage into frequency (50kHz to
100kHz range), before the signal is applied to
the rotating transformer.
MLG PRESSURE TRANSDUCER
IDENTIFICATION
FIN: 13GV (WHEEL 1), 15GV (WHEEL 2), 12GV (WHEEL 3),
14GV (WHEEL 4)
LOCATION
ZONE: 731 (LH MLG), 741 (RH MLG)
COMPONENT DESCRIPTION
The pressure transducer is installed in a support
attached to the wheel rim. It is of the piezoresistive
strain-gage type. An external voltage source supplies
this transducer which gives a DC signal from 0 to 100mV
in proportion to the pressure. A four-wire, shielded
and twisted cable is connected to the rotating
mechanism.
TMULDHX04-T02 LEVEL 3
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TPIS COMPONENTS - MLG TRANSMISSION UNIT - MLG PRESSURE TRANSDUCER
TMULDHX04-P02 LEVEL 3
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TIRE PRESSURE INDICATING SYSTEM COMPONENTS
NLG TRANSMISSION UNIT
IDENTIFICATION
FIN: 4GV (WHEEL 9), 5GV (WHEEL 10)
LOCATION
ZONE: 711
NLG PRESSURE TRANSDUCER
IDENTIFICATION
FIN: 10GV (WHEEL 9), 11GV (WHEEL 10)
LOCATION
ZONE: 711
TMULDHX04-T03 LEVEL 3
EFFECTIVITY 32-49-00 Page 6
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TPIS COMPONENTS - NLG TRANSMISSION UNIT - NLG PRESSURE TRANSDUCER
TMULDHX04-P03 LEVEL 3
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THIS PAGE INTENTIONALLY LEFT BLANK
TMULDHX04 LEVEL 3
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32 - LANDING GEAR
32-00-00 MAIN LANDING GEAR SERVICING
CONTENTS:
Spare Seal Activating Valve
Torque Link Damper
TMULDTT05 LEVEL 3
EFFECTIVITY 32-00-00 Page 1
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MAIN LANDING GEAR SERVICING
SPARE SEAL ACTIVATING VALVE
DESCRIPTION
Each main landing gear fitting has a spare seal
activating valve. The activating valve is on the barrel
of the main fitting, adjacent to the gland housing
assembly. This valve can isolate the bottom gland seals
if a leak occurs from that position.
OPERATION
Under normal conditions the valve stem of the spare
activating valve is screwed out, with the ball away
from its seat. Fluid pressure in the shock absorber
is felt equally on both sides of the upper seal in the
lower bearing sub-assembly, but only one side of the
lower seal. Therefore, the lower seal is subjected to
pressure differentials.
If a leak occurs at the lower bearing housing,
indicated by the presence of hydraulic fluid on the
sliding tube, the fault may be expected to be from the
lower seal.
The cap screw, an indicator, must be removed and the
valve stem screwed on to seat the ball. This action
isolates the lower seal from hydraulic pressure, which
effectively stops the leak, and transfers the pressure
differential to the upper seal.
TMULDTT05-T01 LEVEL 3
EFFECTIVITY 32-00-00 Page 2
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MAIN LANDING GEAR SERVICING - SPARE SEAL ACTIVATING VALVE
TMULDTT05-P01 LEVEL 3
EFFECTIVITY 32-00-00 Page 3
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MAIN LANDING GEAR SERVICING
TORQUE LINK DAMPER
DESCRIPTION
The torque link damper is a spring centered, two way
　
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