AMD 601XL / 601XLI / 650LS / 650LSi SLSA MAINTENANCE MANUAL
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TACHOMETER
GENERAL
The tachometer is connected to the engine regulator which provide rpm data to the
indicator.
A separate hour meter records engine operation time. Aircraft may have mechanical or
Electric Tachometer.
TROUBLESHOOTING See following table:
TACHOMETER
Trouble
Cause
Remedy
No reading on indicator, either
permanent or intermittent.
Broken wire or connection.
Replace.
Replace sensor (electric)
Recalibrate instrument (electric)
Replace instrument.
ENGINE GAUGES
Aircraft may be equipped with individual gauges or all in one - Engine Information
System (EMS)
When aircraft is equipped with an EMS, see the EMS manufacturers instructions.
When individual gauges, see the following:
ENGINE OIL PRESSURE GAUGE
GENERAL
The oil pressure gauge is mounted in the cluster on the instrument panel. This gauge will
indicate the amount of oil pressure in PSI available at the pressurized engine oil passage.
TROUBLESHOOTING
ENGINE OIL PRESSURE GAUGE
Trouble
Cause
Remedy
Excessive error at zero.
Pointer loose on shaft.
Overpressure or seasoning of
bourdon tube.
Replace instrument.
Excessive scale error.
Improper calibration adjustment.
Replace instrument.
Excessive pointer oscillation.
Improper damping or rough
engine relief valve.
Disconnect line and drain. Check
for leaks. If trouble persists,
clean and adjust relief valve.
Sluggish operation or pointer or
pressure fails to build up.
Engine relief valve open.
Check and clean.
Replace sensor on engine
July 09
9.4