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: 110 of 233
5.
When air is fully expelled, tighten bleed nipples & check fittings for leaks.
6.
Repeat steps 1-4 for other side brake.
WARNING
Use only automotive brake fluid. DO NOT use aircraft hydraulic fluid or damage will result.
8.23 BRAKE PAD ADJUSTMENT
Brake Pads may be adjusted by removing the wheel spats as described in Section 8.3 above.
Tightening the brake pads onto the disc with the attaching bolts until the wheel cannot be turned and
the brake pistons have been pushed fully back into the calipers.
Loosening off the attaching bolts just until the wheel can be rotated freely.
If the springs are found to be binding they may be shortened slightly.
Visually inspect the fit of the pads against the discs. If one side pad is rubbing and the other free or if
the pads are sitting at an angle to the disc it is necessary to adjust the caliper mounting plate.
The caliper mounting plate can be adjusted by carefully bending it. Ensure that soft-jaws or similar
are used to ensure that the plate is not marked or damaged. Do not bend the plate sharply or
repeatedly. The aim is to have the brake pads aligning with the disc and with the disc centred so that
when the brakes are OFF, both pads are slightly clear of the disc. Carrying out this process carefully
will give optimum brake performance and life.
WARNING
The calliper mount plate can be damaged by repeated bending, sharp bending or tool marks.
Care must be taken.
8.24 BRAKE DISC WEAR LIMIT
1.
Measure the thickness of the brake disc in an area where it is not being worn
– i.e. on one of the
hub legs. Compare this measurement to the wear face of the disc. The maximum wear (i.e.
difference between the two measurements) is 2.0mm.
2.
If brake disc is below minimum thickness, install a new part. For directional brake discs, refer to
Figure 60 for installation details.
