THRUSH AIRCRAFT INC – MODEL S2RHG-T34 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
5-4
Effective: 5/05/04
TRANSMITTER
The fuel quantity transmitters are installed in the inboard aft corner of the wing fuel tanks.
Access to the transmitter is gained by removing the inboard cover plate. As the fuel level
increases, the float arm is repositioned. This produces a minimum resistance through the
transmitter, permitting maximum current flow through the fuel quantity indicator and
maximum pointer deflection. As the fuel level is lowered, resistance in the transmitter is
increased, producing a decreased current flow through the fuel quantity indicator and
consequently a smaller pointer deflection on the fuel quantity indicator.
Removal
Removal of the fuel quantity transmitter can be accomplished through the inboard cover
plate on the upper surface of the wing.
A.
Defuel aircraft as outlined in Section 2.
B.
Remove inboard cover plate.
C.
Disconnect electrical leads at the transmitter.
D.
Remove attaching screws, washers and bushings, and carefully remove
transmitter assembly.
Installation
The transmitter can be installed by reversing the removal procedures. Do not damage
float or bend float arm when placing the transmitter into the tank or incorrect readings will
result.
Calibration
The fuel quantity transmitter and indicator have been calibrated at the factory and should
not require recalibration. However, if for some reason the system requires recalibration,
the electrical system should be carefully checked prior to recalibration. When necessary,
the fuel quantity indicating system is calibrated as follows:
A.
Defuel aircraft as outlined in Section 2.
B.
Connect an APU (auxiliary power unit) to the external power connector.
C.
Turn APU on and adjust to 27.5 volts.
D.
Turn battery switch ON. Readjust APU to 27.5 volts, if necessary.
E.
Place fuel quantity switch to L.H. MAIN tank.
F.
With the transmitter float resting on the bottom of the fuel tank, set indicator needle
to the empty mark by adjusting the screw on front of indicator.
G.
Raise float to touch top of fuel tank and set indicator needle to the full mark by
adjusting trimmer screw on back of indicator.
H.
Place fuel quantity switch to R.H. MAIN tank.
I.
Repeat steps F and G for right fuel tank.
J.
Turn battery switch OFF.
K. Turn
APU
OFF.
Содержание S2RHG-T65 TURBO THRUSH
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