Tennant T390, Техническое и сервисное руководство

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PLDC04453
REVISION 00
December 23, 2020
TECHNICAL OFFICE
Stavale
11
Measure both carbon brushes B to check wear. The minimum acceptable length is 12 mm / 0,47 inc.,
if less, replace the carbon brushes with new ones of the same type.
Always replace both carbon brushes at the same time.
12
When fitting new carbon brushes, compare the new ones with the old ones, or check them against
the dimensions shown below. Only the length must be different.
13
If the carbon brush measurements are still within the tolerance, visually check for any abnormal wear
of the sliding surface
B1 .
14
Before fitting new carbon brushes or repositioning the existing ones, check rotor wear through hole in the
carbon brush seat; make sure this is not excessive.
Always make sure that the carbon brushes slide freely in their seats.
Checks
*
*
Carbon Brush Dimensions
Fig. 88
22.9 ± 0.1 mm
12 ± 0,1 mm
6,9 ± 0,1 mm 13,9 ± 0,1 mm
B
B
B1
Fig. 89
0.9 ± 0.004 in
0,5 ± 0,004 in
0,27 ± 0,004 in
0,55 ± 0,004 in
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