Aircraft Technical Manual
Jabiru Aircraft
Pty Ltd
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
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ISSUE
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Dated: 29th October 2014
Issued By: AS
Page: 258 of 298
11.7.2 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 11-5
– Trouble Shooting – Tachometer
Trouble
Probable Cause
Remedy
Instrument fails to
operate
Circuit breaker open
Check master and avionics
circuit breakers. Re-set if
necessary.
Defective mechanism
Substitute known-good
tachometer and check reading.
Replace instrument
Incorrect indication
Sensor not positioned correctly
Adjust sensor per Engine Manual
Instructions.
Analogue Tacho: Incorrectly set
dip-switches or tachometer
programming.
Check switch positions /
programming as appropriate to
the tachometer. Refer to engine
manuals.
Hand oscillates
Same probable causes as for
“Incorrect Indication” above.
See remedies for “incorrect
indication” above.