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: 126 of 233
10.3.3 INSPECTION & REPAIR
Note that while the pictures below show the motor removed, it is possible to carry out this work with
the motor still fitted to the aircraft.
Remove the two screws then take off the motor cover as shown in Figure 95.
Figure 95 shows a close-up picture of the commutator ring. The unit in this picture is very dirty and
badly needs cleaning.
Use a rag lightly moistened with solvent (such as acetone) to remove as much of the black material
from the ring as possible.
Use a tooth brush or other similar small brush to clean between the segments of the ring as much as
possible. The brush may be moistened with solvent.
Care must be taken remove the black material from the motor
– as it is conductive it could cause a
short circuit or other problem if allowed to drip into the motor base.
Allow the unit to dry fully.
Re-assemble, taking care to line up the key slots on the motor housing.
Test and repeat cleaning process if required.
Figure 95
– Linear Actuator Disassembled
Remove screws
to allow cover to
be removed for
motor access.
Commutator Ring
