THRUSH S2R – G10 - Engine Oil Temperature Gauge; Fuel Quantity Indicator

THRUSH AIRCRAFT, INC – MODEL S2R-G10
AIRCRAFT MAINTENANCE MANUAL
INSTRUMENT TROUBLE SHOOTING CHART, Table 8-1, Page 4
FUEL QUANTITY INDICATOR
PROBLEM PROBABLE CAUSE REMEDY
Fuel tanks empty
Check fuel quantity. Service with proper
grade and amount of fuel.
No power to indicator.
(Pointer stays below E).
Check circuit breaker. Inspect for open
circuit. Reset breaker, repair or replace
defective wire.
Grounded wire. (Pointer
stays above F).
Check for partial ground between
transmitter and indicator. Repair or
replace defective wire.
Low voltage
Check voltage at indicator. Correct
voltage.
Defective indicator
Substitute known-good indicator.
Replace indicator.
Failure to
indicate
Defective sending unit Replace sending unit
Registers either
full or empty
Float arm stuck Free float arm.
Defective indicator
Substitute known-good indicator.
Replace indicator.
Sticky/sluggish
indicator
operation
Low voltage
Check voltage at indicator. Correct
voltage.
ENGINE OIL TEMPERATURE GAUGE
Gauge has
erratic operation
Defective indicator or
temperature probe
Replace instrument or temperature
probe (one at a time).
Gauge has
erratic operation
(Continued)
Grounded wire
Check for partial ground between
temperature probe and indicator. Repair
or replace defective wire.
Gauge does not
register
No power to indicator or
defective instrument or
temperature probe
Check circuit breaker. Inspect for open
circuit. Reset breaker. Repair or
replace instrument or temperature
probe.
Page Effective: 03/26/2010 8-16