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Aircraft Service Manual
Jabiru Aircraft
Pty Ltd
JTM001-1
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
REVISION
1
Dated: Nov 2011
Issued By: SW
Page: 205 of 233
Figure 180
– Hall Effect Sensor Inst. (For Tach with Jabiru Logo on Face)
15.8 ANALOGUE ENGINE GAUGES
15.8.1 DESCRIPTION
The Oil Pressure, Oil Temperature, Voltage, Exhaust Gas Temperature (EGT, where equipped), hour
meter (where equipped) and Cylinder Head Temperature (CHT) Gauges are electronic instruments.
With the exception of the CHT gauge the instruments require power to operate which is supplied
from the main bus bar.
The CHT gauge does not require power
– it connects only to a thermocouple which is fitted to the
exhaust-side spark plug of the hottest cylinder of the engine.
15.8.2 GAUGE REMOVAL & INSTALLATION
Remove the instrument panel fascia as detailed above.
Disconnect the instrument.
Undo the fasteners and remove the instrument from the fascia.
For installation, reverse removal steps above.
Table 20
– Trouble Shooting – Engine Gauges
Trouble
Probable Cause
Remedy
Instrument fails to
operate
Circuit breaker(s) open
Check master and avionics
circuit breakers. Re-set if
necessary.