Aircraft Technical Manual
Jabiru Aircraft
Pty Ltd
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
This document is controlled while it remains on the Jabiru server. Once this no longer applies the document becomes uncontrolled.
ISSUE
1
2
3
4
5
Dated: 29th October 2014
Issued By: AS
Page: 117 of 298
6.33.3 Installation
Required Tools:
Spanners / socket wrench
Torque wrench
Parts and Material:
Resin with flock
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)
The following procedural steps describe how to install the leg. Refer to applicable paragraphs for
installation of the individual components.
1.
Offer the beam to the fuselage and install clamp and bolts/nuts (2 OFF)
– Do not tighten at this
stage.
2.
Locate top end bolt, install and tighten nut. Use the torque value given in Table 2-8 as guidance,
however do not crush the rubber bush completely. Aim to compress the visible edge of the
rubber to about half its unloaded thickness.
3.
For the curved undercarriage leg show in Figure 72, tighten outboard clamp bolts/nuts (2 OFF).
Torque to “solid laminate” value give in Table 2-8.
4.
For the
“straight” undercarriage leg shown in Figure 71 follow the additional steps below:
-
Check that the flock clamp bed applied to the leg is in place and fits the outboard leg clamp
closely. If the flock has degraded, clean off any loose pieces.
-
Flock the clamp to the leg (Flock made by mixing Jabiru Epoxy resin and cotton fibre flock to
a gluey consistency). Do not tighten bolts while the resin is wet.
-
After the resin has cured (around 24 hours, possibly more in cold climates) fully tighten the
outboard clamp bolts.
Torque to “solid laminate” value give in Table 2-8.
Note: “straight” legs are “handed” – ensure the legs are installed on the correct side of the
aircraft.
5.
Bolt the stub axle & calliper mount plate to the main undercarriage leg.
Torque to “solid laminate”
value give in Table 2-8. Note that if a new leg is being fitted it will be necessary to check and
adjust the angle of the stub axle. This must be carried out in accordance with Section 5.19.
6.
Fit brake caliper to brake mount plate.
7.
Assemble the wheel and brake assembly. Fit the axle extension and adjust the brakes.
8.
Fasten the brake line to the undercarriage leg using zip ties (2 min per leg).
6.33.4 Inspection and Repair
Required Tools:
Spanners / socket wrench
Parts and Material:
Resin with flock
Replacement bolts, nut, washers (if required)
Replacement Clamp (if required)
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.
Inspect composite beam for damage indicated by cracks or de-lamination. Pay particular
attention to the area around the centre bend and to areas around drilled holes.
2.
When inspecting the legs shown in Figure 71 pay particular attention to the area around each
bend in the leg. Note that it is possible for this leg type to have internal damage which does not
show to the surface. In this case the best indicator of the damage is that the damaged leg will
have lost stiffness compared to the other side and so the aircraft will lean in the direction of the
damaged leg. If required, legs can be returned to Jabiru Aircraft for testing.
3.
Inspect bolts and nuts for signs of stress, bending or corrosion
– replace if in any doubt.
4.
Inspect clamp for damage.
