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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: 89 of 233
8.4
MAIN GEAR TOP FAIRING (SPEED FAIRING)
8.4.1 DESCRIPTION
Jabiru Aircraft are equipped with fairings between the main leg and the fuselage. These smooth the
airflow in this area and significantly improve the efficiency of the aircraft.
8.4.2 REMOVAL AND INSTALLATION
The fairing at the top of the main undercarriage leg is removed by removing the securing screws.
To install, reverse this procedure.
WARNING
During assembly ensure that the brake line is not rubbing against the fairing or mounting screws.
Rubbing can lead to failure of the brake line and wheel brake failure.
8.5
MAIN WHEELS
8.5.1 DESCRIPTION
The main wheels consist of an inner rim half
– also containing the bearings and brake disc mounting
and an outer half.
Main wheel rims are cast Aluminium.
Figure 58 shows a typical installation. While details and part numbers vary from model to model the
general arrangement shown applies to all aircraft.
8.5.2 MAIN WHEEL REMOVAL
1.
Jack aircraft as outlined in Section 8.2 above.
2.
Remove the upper leg/fuselage fairing and the wheel spat (if equipped) as detailed above.
3.
Remove outboard brake pad plates.
4.
Remove lock bolt/nut through the axle extension.
5.
Remove axle extension.
6.
Pull wheel from axle.
8.5.3 MAIN WHEEL DISASSEMBLY
1.
Deflate tyre and break tyre beads loose from tyre rims. A bead-breaker or similar may be
required for this task.
WARNING
Injury can result from attempting to separate wheel halves with the tyre inflated. Avoid damaging
wheel flanges when breaking beads loose as a scratch, nick or gouge may cause wheel failure.
2.
Remove through-bolts/nuts and separate wheel halves, removing tyre, tube and wheel hub.
3.
Remove brake disc.
4.
Remove bearings from hub.
Note: The bearings are “press-fit” in the wheel hub and should not be removed unless a new part
is to be installed.
8.5.4 MAIN WHEEL INSPECTION, ASSEMBLY AND REPAIR
Figure 59 shows a typical wheel assembly. While details and part numbers vary from model to
model the general arrangement shown applies to all aircraft.
1.
Clean all metal parts in solvent and dry thoroughly.
2.
Inspect wheel halves for cracks. Cracked wheel halves should be discarded and new parts used.
Sand out nicks, gouges and corroded areas.