Jabiru j430 - Analogue Engine Gauges

Aircraft Technical Manual
Jabiru Aircraft Pty Ltd
JTM001-5
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
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Dated: 29th October 2014
Issued By: AS
Page: 260 of 298
11.8 Analogue Engine Gauges (all J-Series)
11.8.1 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.
11.8.2 Gauge Removal & Installation
Required Tools:
Tools as required in Section 11.2.2
Screwdrivers
Parts and Material:
N/A
Type of Maintenance:
Line Maintenance
Level of Certification:
L2 or LAME (A&P or LSA Repairman / Maintenance)
Return to Service:
L2 or LAME (A&P or LSA Repairman / Maintenance)
 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 11-6 – 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.
Defective mechanism
Substitute known-good
tachometer and check reading.
Replace instrument
Defective sensor
Replace sensor
Incorrect indication
Sensor not working correctly
Replace sensor
Poor connections
Check and repair wiring &
connections.