Carbon Brushes - Nilfisk-ALTO Scrubtec R 6-71C 28C Service Manual

Service Manual – Focus II / Scrubtec R6 Rider Autoscrubber

Carbon Brushes

6. Remove each of the 4 brushes (33) from
the motor and replace them with new
brushes.
7. Remove the nut (34) from the brush
terminal, and remove the brush wire.
Note that 2 of the brushes also have a
large incoming power wire (36) on their
terminal.
8. Slide the pressure spring (35) off the
carbon portion of the brush, and slide the
brush out of the holder.
9. Replace each brush in the reverse
procedure.
Electromechanical Brake
10. Remove the three screws (34) that secure the
brake module (35) to the motor.
11. Free up the brake wire from the motor housing,
and remove the brake.
12. During replacement, use a screw driver (37) to
hold the brake release lever (36) raised. This will
allow the spline gear to float while you realign
the mounting screws (34).
Reassembly Notes
13. Inspect the gear oil. If the gear oil is dirty or
some has spilled out, then it must be changed.
Due to the configuration of the gearbox, there is
no way to check the oil level except to empty the
oil and refill it.
When changing the gear oil use 4.6 oz (130 g) of Mobilgear 600 XP 150 or AGIP BLASIA 150 gear oil.
14. Make sure the two vent filters (37) are clean and in place, and then insert the motor back into the
gearbox. Take care not to damage the gearbox seal.
15. After reassembling the machine, with the drive wheel off the ground, exercise the drive motor to help
break in the brushes.
37
34
34
36
Wheel System, Traction
33
35
33
37
34
88
36
34
35