PLDC04453
REVISION 00
December 23, 2020
TECHNICAL OFFICE
Stavale
9
Identify the four carbon brushes (for each individual motor), arranged 90° degrees apart.
10
Remove and check or replace the brush carbon brushes.
11
Using long-nosed pliers remove the fast-on
B
from its socket.
12
Use a hook to lift the spring
C
, and pull the carbon brush
D
outwards.
13
Check that the dimensions of the carbon brush
E
lie within the tolerances given in the figure below.
The brush must have a minimum length of 8.0 mm / 0,315 in.
14
Check the sliding contact surface
D1
of the carbon brushes I for wear or damage.
The surface must not be badly worn or burned.
15
When fitting new carbon brushes, compare the new ones with the old ones, or check them against
the dimensions given in the figure below. Only the length must be different.
The carbon brushes must all be replaced at the same time.
When fitting the carbon brushes, make sure that they slide freely in their seats.
*
B
D
C
Fig. 8
18,6 ± 0,1 mm
6,9 ± 0,1 mm
8,0 mm
13,8 ± 0,1 mm
Fig. 9
D1
D
D
D
0,27 ± 0,004 in
0,73 ± 0,004 in
0,54 ± 0,004 in
0,32 in
6 of 73
