Removing The Cleaning Head Housing; Replacing The Water Pump - Kärcher BR 30/4 C Service Manual

Loosen the fastening screws on both sides.
Remove the release of the parking position (see
chapter "Removing the parking position release").
Removing the housing from the cleaning head.
1 Toothed belt, from suction turbine
2 coupling
3 Toothed belt to the brush roller drive
4 Right vacuum bar support
5 Suction channel
6 Left vacuum bar support
7 Shaped hose, water distribution bar connection
8 Water pump (M2)
9 Water hose to the water pump
10 Suction turbine housing
11 Connector, connecting cable to water pump

5.1.8 Replacing the water pump

1 Shaped hose, water distribution bar connection
2 Water pump (M2)
Remove the cleaning head housing (see chapter

"Removing the cleaning head housing").

Pull the shaped hose off the connection of the wa-
ter distribution bar.
Pull the water pump out of the water pump holder
toward the top.
1 Shaped hose, water distribution bar connection
2 Water pump (M2)
3 Water hose to the water pump
4 Pump holder, rubber
5 Pump holder, rubber
6 Connector, connecting cable to water pump
7 Diode, soldered into the cable
The rectifier diode converts AC voltage to pulsating
direct voltage. This will result in the water pump feed-
ing the water evenly.
The supply voltage can be read at the Molex plug.
Target value:
Water pump switch turned off = 0 V AC
Water pump switch turned on = current voltage
BR 30/4 C Bp Pack
English 5.906-434.0 Rev. 00 (12/10)
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