Jabiru j430 - Brake Disc Wear Limit; Trouble Shooting - Brakes

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: 138 of 298
WARNING
The calliper mount plate can be damaged by repeated bending, sharp bending or tool marks.
Care must be taken.
6.48 Brake Disc Wear Limit (all J-Series)
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 70 for installation details.
6.49 Trouble Shooting - Brakes
Table 0-3 – Trouble Shooting – Brakes
Trouble
Probable Cause
Remedy
Dragging brakes
Brake handle binding
Check and adjust
Worn or broken master cylinder
piston return spring
Repair or install new master
cylinder
Restriction in hydraulic lines or in
master cylinder
Drain brake line, clear with
compressed air. If cleaning lines
fails, the master cylinder may be
faulty and should be repaired or
replaced.
Brake callipers not aligned with disc
Check and adjust
Brakes fail to operate
Leak in system
If master cylinder or wheel
cylinders are leaking, repair or
install new parts.
Air in system
Bleed system
Lack of fluid in master cylinder
Fill and bleed system
Master cylinder defective
Repair or install new parts
Brake pads worn
Replace with new parts