Jabiru 3300 - Ignition Coil & Alternator Electrical Inspections; Figure 43 - Ignition Coil Tests; Figure 44 - Different Ignition Coil Models (Honda on Left, Jabiru on Right)

Engine Maintenance Manual
Jabiru Aircraft Pty Ltd
JEM0002-5
Jabiru 2200 & 3300 Aircraft Engines
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ISSUE
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Dated : 2nd June 2015
Issued By: AS
Page: 73 of 103
L:\files\Manuals_For_Products\Engine_Manuals\Engine Maintenance Manual 22 & 33\JEM0002-5.docx
 The condition of the bushes fitted to the valve rockers must be monitored. This can be done by
a visual inspection with the rocker cover removed – check for visible movement of the rocker
on the shaft, visible degradation of the bush material etc.
 This should be done as a part of the hydraulic lifter inspections noted above.
9.21 Ignition Coil & Alternator Electrical Inspections
Required Tools:
Multimeter
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)
Figure 43 – Ignition Coil Tests
 Use a multimeter to measure the primary resistance (from the earth terminal to the iron core as
shown above). It should be 0.8 Ω to 1.0 Ω for Honda coils and 1.7 Ω to 1.8 Ω for Jabiru coils.
 Use a multimeter to measure the secondary resistance (from the high tension lead to the iron
core as shown above) it should be between 5.9 KΩ to 7.1 KΩ for Honda coils and 18 KΩ to 30
KΩ for Jabiru coils.
 Alternator resistance: use a multimeter to measure the resistance of the windings, which
should be between 0.4Ω to 1.1 Ω. Resistance to ground should be infinite.
Figure 44 – Different Ignition Coil Models (Honda on Left, Jabiru on Right).