Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual page 200

THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH
B. A screw type adjuster located on the face of the gauge at the six o'clock position
adjusts the remote gauge 0 mark. Adjustment of the screw CW or CCW will move
pointer left or right.
C. With floating ball against lower stop collar, adjust screw adjuster until pointer is
aligned with 0 marks on gauge.
D. The 360-gallon mark is adjusted by turning a screw head located on a 20 K ohm
potentiometer on a circuit board attached to rear of gauge.
E. With floating ball against the top stop of the sending unit; adjust the potentiometer
until pointer is aligned with 360 marks on gauge.
The small % scale on analog control unit Type FA-A will move
F. Once steps 3 and 5 are completed, the unit is in calibration.
Hopper loads above 360 gallons are un-gaugeable.
G. Also provided are two hopper-level warning lights -- one amber and one red. They
both have a push-to-test feature and a dimming capability. The lights are adjusted
to come on at any position (hopper level) that you may desire by potentiometers
located under pop-off caps on the face of the analog control unit Type FA-A. The
amber light is adjusted to come on by adjusting Pot 1 labeled set point 1, and the
red light is adjusted to come on by adjusting Pot 2 labeled set point 2.
H. The amber and red lights can be set at any position you may desire. Thrush
Aircraft Inc recommends setting the amber light to come on at 25 gallons, or 8 3/8"
from top of lower stop collar to bottom of floating ball, and the red light to come on
at 6 1/2 gallons, or 2 1/2" from top of lower stop collar to bottom of floating ball.
Effective: 9/16/05
AIRCRAFT MAINTENANCE MANUAL
* NOTE *
Unit must be on to adjust 360 side of gauge.
* NOTE *
in direct relationship with the remote gauge.
* NOTE *
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