Wheels, Drive System 125
Service Manual – Scrubtec R 253 - RA40
Gearmotor Carbon Brushes Check/Replacement
Check
1 Remove the gearmotor unit from the machine
2 At the workbench, remove any dust and dirt from around the drive system motor carbon brushes
3 Remove the clamp (A, Figure 8) by disengaging the tab (B)
4 Remove the screw (C) of the carbon brushes lead-in wires
5 Carefully disengage the retaining spring (D) and remove the carbon brushes (E)
6 Check the carbon brushes (E) for wear The carbon brushes are worn out when:
◦ They do not make sufficient contact with the armature of the motor due to their wear
◦
When their contact surface is not intact
◦
When the residual stroke is below 0 12 in (3 mm)
◦
When the thrust spring etc is broken
7 Replace the carbon brushes as an assembly
Reassembly
8 Assemble the components in the reverse order of disassembly
9 Reassemble the gearmotor unit
Figure 8
C
D
E
A
B
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