Replace The Brush Rollers On The Br Brush Head; Replace The Drive Belt - Kärcher B80W Service Manual

5.10 Replace the brush rollers on the BR brush head

Raise the brush head.
Turn the lock of the bearing cover counter-clockwise.
Push the bearing lid down and remove.
Pull out the brush roller.
Insert the new brush roller and slide it onto the pickup mandrel.
Reassemble the bearing lid in the reverse sequence.
1 Lock, bearing lid
2 Bearing lid
3 Pickup mandrel
24
English 5.906-468.0 Rev. 00 (02/09)

5.11 Replace the drive belt

Remove the bearing lid from the brush roller mount (see Chap-
ter 5.10).
Unscrew the fastening screws of the drive belt cover and re-
move the drive belt cover.
Loosen the fastening screws of the brush motor.
Remove the drive belt.
Install the new drive belt, tension it and tighten the fastening
screws on the motor. The V belt tension is determined via the
position of the motor shaft (tensioning by raising the motor, e.g.
with a screwdriver, through the elongated hole beneath the mo-
tor shaft).
Note
The drive belt must be tensioned so that it can be deflected by a
strong thumb press to a max. of 5 mm (arrow) between the motor
shaft and the driven pulley.
1 Fastening screws (9x), drive belt cover
2 Drive belt cover
3 Fastening screws (4x), brush motor
4 Drive belt