Fuel Quantity Indicator; Engine Oil Temperature Gauge - Thrush Aircraft S2R-R1340 Maintenance Manual

THRUSH AIRCRAFT, INC – MODEL S2R-R1340 THRUSH 600
INSTRUMENT TROUBLE SHOOTING CHART, Table 8-1, Page 4
PROBLEM
Fuel tanks empty
No power to indicator.
(Pointer stays below E).
Grounded wire. (Pointer
Failure to
stays above F).
indicate
Low voltage
Defective indicator
Defective sending unit
Registers either
Float arm stuck
full or empty
Defective indicator
Sticky/sluggish
indicator
operation
Low voltage
Gauge has Defective indicator or
erratic operation temperature probe
Gauge has
erratic operation Grounded wire
(Continued)
No power to indicator or
Gauge does not
defective instrument or
register
temperature probe
Effective: 01/01/08
AIRCRAFT MAINTENANCE MANUAL

FUEL QUANTITY INDICATOR

PROBABLE CAUSE

ENGINE OIL TEMPERATURE GAUGE

REMEDY
Check fuel quantity. Service with proper
grade and amount of fuel.
Check circuit breaker. Inspect for open
circuit. Reset breaker, repair or replace
defective wire.
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
Free float arm.
Substitute known-good indicator.
Replace indicator.
Check voltage at indicator. Correct
voltage.
Replace instrument or temperature
probe (one at a time).
Check for partial ground between
temperature probe and indicator. Repair
or replace defective wire.
Check circuit breaker. Inspect for open
circuit. Reset breaker. Repair or
replace instrument or temperature
probe.
8-15