Scrub System, Disc - Battery Version
68
Service Manual – SC450
Brush Motor Carbon Brush Check/Replacement
Disassembly/Check
1
Remove the brush motor (see the procedure in the Brush Motor Disassembly/Assembly paragraph).
2 Fasten the brush motor at the workbench
Note:
Remove one carbon brush at a time, to avoid confusing their positions.
3 Remove the screw (A) of one of the four carbon brush assemblies (B)
4 Remove the carbon brush assembly (B) by disengaging the inner fasteners (C) and (D)
5
If necessary, remove the screw (E) and disconnect the electrical connection (F) from the carbon brush
assembly
6 Check the carbon brush (G) for wear The carbon brush is worn when:
• The contact with the motor armature is insufficient
•
The contact surface is not even
•
The stroke is less than 0 12 in (3 mm)
• The thrust spring is broken, etc.
7 Remove and check the other carbon brush assemblies (B) by performing steps 3 to 6
8
If necessary, disconnect the electrical connection (F) and remove the carbon brush assemblies to replace
them
Replace the carbon brushes as an assembly
Assembly
9
Assemble the components in the reverse order of disassembly, and note the following:
When fastening the electrical connections (F), take care of their insulation from the surrounding parts of
the frame
B
A
E
G
C
F
D
B
A
B
P2000028
