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: 113 of 298
Figure 69 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.
3.
If excessively warped or scored or worn to a thickness of 2 mm, brake discs should be replaced
with a new part. Sand smooth small nicks and scratches.
4.
Carefully inspect bearings for damage and discolouration.
Note: Bearings are pre-packed. DO NOT clean with solvents as it will remove the packing grease.
5.
If existing parts are unserviceable, replace bearings.
6.
Apply automotive wheel rim lubricant to the bead areas of the rim halves. Note that if this step is
missed, disassembly of the wheels in future will be very much harder.
7.
Position tyre and tube between wheel halves with tube inflation valve through hole in outside
wheel half.
8.
Mate wheel halves. While holding halves together, assemble a washer and nut on one through-
bolt and tighten snugly. Assemble the remaining washers and nuts on the through-bolts and
torque to the
“solid laminate” value specified in Table 7.
CAUTION
Ensure tube is not pinched between wheel halves during assembly. Uneven or improper torque
of through-bolt nuts can cause failure of bolts with resultant wheel failure.
9.
Insert through-bolts through brake disc and position disc on the inner wheel hub flange. Note that
if directional brake discs are fitted, the discs must be oriented in for the correct direction of
rotation. Refer to Figure 70 below.
10.
Inflate tyre to seat tyre beads, then adjust to correct tyre pressure
– Refer Aircraft Specifications
above.
6.30.5 Main Wheel Installation
Required Tools:
Spanners / socket wrench
Parts and Material:
“Anti Seize” or a Water Proof grease
Assembled wheel
Bearing spacer ring
Type of Maintenance:
Line Maintenance
Level of Certification:
L1, L2 or LAME (Owner, A&P or LSA Repairman / Maintenance)
Return to Service:
L1, L2 or LAME (Owner, A&P or LSA Repairman / Maintenance)
1.
Lightly coat axle with “Anti Seize” or a Water Proof grease.
2.
While older and lighter aircraft models use a hollow axle stub, most recent aircraft use a solid
version of the same part. When using the solid axle, an Aluminium bearing spacer ring must be
fitted to the stub before the wheel assembly
– see Figure 68. This part is not required for hollow
axles.
3.
Place wheel assembly on axle.
4.
Install spacer and lock bolt/nut through centre of axle. Wriggle the wheel along the length of the
axle
– there should be minimal movement. Movement more than 0.75mm indicates a missing
spacer ring, worn bearings or other issue requiring correction.
5.
Place outboard brake pad plate and springs in position and secure with bolts/nuts/washers.
6.
Install spats and speed fairing (if used) as outlined in Section 6.28 and 6.29.
