Engine Fuel Pressure Gauge; Tachometer - THRUSH S2R – G10 Maintenance Manual

AIRCRAFT MAINTENANCE MANUAL
INSTRUMENT TROUBLE SHOOTING CHART, Table 8-1, Page 3
PROBLEM
Gauge does not
register
Gauge pointer
fails to return to
zero
Gauge does not
register properly
Gauge
inoperative or
erratic. Low
pressure or flow
registered.
Fuel pressure or
fuel flow
registered is
high, low or
erratic

Tachometer

registers low,
erratically, or no
reading.
Effective: 03/26/2010
THRUSH AIRCRAFT, INC – MODEL S2R-G10
ENGINE OIL PRESSURE GAUGE (Continued)
PROBABLE CAUSE
Pressure line clogged
Leak in pressure line
Pressure line broken
Pointer loose on staff
Damaged gauge
movement
Foreign matter in line
Faulty mechanism

ENGINE FUEL PRESSURE GAUGE

Restricted, broken or
leaking line
Vapor in fuel line
Faulty relief valve in
engine-electric driven
pump(s) or defective
pump(s)
TACHOMETER
Tachometer
generator/tachometer
defective
Tachometer generator
shaft sheared
REMEDY
Check line for obstructions. Clean line.
Check line for leaks and damage.
Repair or replace damaged line.
Check line for leaks and damage.
Repair or replace damaged line.
Replace instrument.
Replace instrument.
Check line for obstructions. Clean line.
Replace instrument.
Clear and clean line. Tighten fittings or
replace, if necessary.
Start and run engine until instrument
registers normally.
See fuel pump in Power Plant Section
for replacement or relief valve
adjustment instructions.
Test generator for output. Overhaul or
replace if necessary. Test instrument
and replace, if necessary.
Replace tachometer generator.
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