Jabiru j430 - Wheel Balancing; Main Gear Leg

Aircraft Technical Manual
Jabiru Aircraft Pty Ltd
JTM001-5
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: 116 of 298
6.31.3 Main Wheel Stub Axle Installation
Required Tools:
Spanners / socket wrench
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)
1. Secure axle and inboard brake plate to composite leg, making sure that any wheel alignment
shims are installed in their original position.
2. Install wheel assembly on axle in accordance with Section 6.30.
6.32 Wheel Balancing (all J-Series)
 Since uneven tyre wear is usually the cause of tyre imbalance, replacing the tyre will probably correct
this condition. If a wheel shows evidence of imbalance during service, it may be statically balanced.
6.33 Main Gear Leg (all J-Series)
6.33.1 Description
 For all models discussed in this manual the main undercarriage has the same general arrangement:
a laminated composite spring forms the leg which is bolted to the fuselage at one end and the main
wheels at the other.
6.33.2 Removal
Required Tools:
Tools as required in Section 6.28 and Section 6.27
Parts and Material:
Zip ties
Type of Maintenance:
Heavy 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)
1. Remove fairings to access inner and outer undercarriage leg bolts as detailed in Section 6.28.
2. Jack the aircraft in accordance with the details given in Section 6.27.
3. Un-bolt the axle extension and the brake calliper(s) to allow the removal of the wheel, tyre and
brake disc assembly. Allow the brake calliper(s) to hang on the brake line, ensuring that the line
is not being kinked, distorted or otherwise damaged. If the leg must be removed for an extended
period it is recommended to use zip-ties or similar to support the brake calliper assembly to take
the load off the brake line.
4. Cut the zip-ties holding the brake line to the undercarriage leg.
5. Un-bolt the stub axle from the composite leg and remove.
6. Remove bolt/nut from top inboard end of undercarriage beam. Remove rubber bushes (2).
7. Remove bolts/nuts (2) from the clamp at bend in undercarriage beam.
8. Remove clamp.
9. Where equipped, note the orientation and remove the undercarriage leg wedge.
10. Remove Undercarriage Leg Assembly.