Brush Motor Carbon Brushes Checking/Replacing - Nilfisk-Advance SCRUBTEC 344 Series Service Manual

Service Manual – SC401, SCRUBTEC 344

Brush Motor Carbon Brushes Checking/Replacing

Check
1 Remove the brush deck
2 Remove any dust and dirt from around the brush motor carbon brushes
3 Remove the four protective covers (A) (Figure 11) by disconnecting the clips
4 Remove the carbon brush nuts (B) with the lead-in wires
5 Disengage the tabs (C) and remove the carbon brushes (D)
6 Check the carbon brushes (D) for wear The carbon brushes are worn out when:
◦ They do not make sufficient contact with the armature of the brush 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
Replacing
8 Assemble the components in the reverse order of disassembly
A
Figure 9:
A
B
34 - Scrub System, Disc
D
C
C
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