Scrub System, Disc
88
Service Manual – SC3000
Brush Motor Carbon Brush Check/Replacement
Check
1. Remove the brush/pad-holder deck.
2. Remove dust and dirt from the motor carbon brush support area (A).
3. Disengage the fasteners (B) and (C), then remove the four carbon brush supports (A). If necessary,
disconnect the electrical connections (D).
4. Check the carbon brushes (E) for wear. Replace the carbon brushes when:
◦ The contact with the motor armature is insufficient,
◦ The carbon brushes are worn,
◦ The carbon brush contact surface is not integral,
◦ The carbon brushes when the stroke residual is less than 0.12 in (3 mm),
◦ The thrust spring is broken, etc.
5. If necessary, disconnect the connections (F) and remove the carbon brushes with their supports (A) and
replace them.
6.
Replace the carbon brushes as an assembly.
Reset
7. Assemble the components in the reverse order of disassembly, and note the following:
◦ When connecting the terminals (F), take care of their insulation from the surrounding parts of the
frame.
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