Thrush Aircraft S2R–T660 Maintenance Manual page 222

TROUBLE
Sticky or sluggish indicator
operation
Registers either full or empty
Effective: 12/17/03
THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
PROBABLE CAUSE
Grounded wire. (Pointer stays
above F).
Low voltage
Defective indicator
Defective sending unit
Defective indicator
Low voltage
Float arm stuck
REMEDY
Check for partial
ground between
transmitter and
indicator. Repair or
replace defective wire.
Check voltage at
indicator. Correct
voltage.
Substitute known-good
indicator. Replace
indicator.
Replace sending unit
Substitute known-good
indicator. Replace
indicator.
Check voltage at
indicator. Correct
voltage.
Free float arm.
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