Brush Drive Motor - Carbon Brush Inspection; Brush Drive Motor Replacement; Brush Drive System Maintenance - Nilfisk-Advance BA 500 Service Manual

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BRUSH DRIVE MOTOR - CARBON BRUSH INSPECTION

1 Remove the brush drive motor. See the Brush Drive Motor Replacement section for instructions.
2 See Figure 3. Place the brush drive motor in a vice as shown. Be careful not to damage the pulley.
3 See Figure 4. Remove (2) "F" nuts and remove the end bell from the motor.
4 Remove and measure the carbon brushes. If they are worn to 3/8 inch (9.66 mm) or shorter, replace
both carbon brushes. Remove all loose carbon and dirt from the inside of the motor.
5 Follow steps 1-3 in reverse order to reassemble.
6 Test the motor to make sure it operates properly.
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BRUSH DRIVE MOTOR REPLACEMENT

1 Drain the solution and recovery tanks and remove the solution tank from the machine.
2 Tip the recovery tank to the side and disconnect the batteries.
3 Remove the vacuum motor. See the Vacuum System section for instructions.
4 Disconnect the wires from the brush drive motor. Take note of which wire color goes to each terminal for
reassembly.
FIGURE 3
BRUSH DRIVE SYSTEM
F
F
BA 500 Service Manual
FIGURE 4
8