Kärcher KM 120/250 R D, Manual

Page: 27 / 434

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10
 Loosen the closing cap of the oil filling
opening.
 Clean the filling area.
 Refill hydraulic oil.
For oil type refer to Chapter "Technical
specifications".
 Replace and tighten the closing cap of
the oil filling opening.
NOTICE
Only Kärcher Customer Service is author-
ised to carry out maintenance tasks on the
hydraulic unit.
 Lock parking brake.
 Start the motor.
 Check all hydraulic hoses and connec-
tions and ensure that they are leak-
proof.
1 Coolant expansion tank
 Check filling level while the motor is
cold.
 Check the filling level in the coolant ex-
pansion tank.
The correct coolant level has to be be-
tween MIN and MAX.
 DANGER
Risk of burning and scalding!

Allow the water cooler to cool down for
at least 20 minutes.
 The coolant level of the water cooler is
checked at the coolant expansion tank.
See chapter "Checking the cooling wa-
ter level".

Clean cooler lamella.
Remove soiling by means of a soft
brush, compressed air or low water
pressure.

Check cooler hoses and connections
and ensure that they are leak-proof.

Clean the fan.
 Start the motor.
 Raise the waste container up to the
end-position.
 Switch off engine.
 Lock parking brake.
 Use the safety bar for emptying from a
height.
 Remove belts or cords from roller
brush.
 Remove the safety bar.
 Start the motor.
 Lower the waste container up to the
end-position.
 Switch off engine.
1 Key
2 Side panels
 Drive the waste container up and sup-
port it with the safety rod.
 Open the side covers using a key.
1 Holding bow
2 Wing nut
3 Side seal
 Unscrew the wing nuts.
 Remove the retaining clamp.
 Flip the side seal out.
 Uncscrew the retaining screw of the
roller brush intake, and swing the intake
to the outside.
 Pull out roller brush.
Installation position of roller brush in direc-
tion of travel (top view)
Note: When installing the new roller brush,
ensure correct positioning of the bristle as-
sembly.
 Install new roller brush. The nuts of the
roller brush must be inserted on the
notches of the opposite crank.
Note: Once the new roller brush has been
installed, the sweeping track must readjust-
ed.
Note : The sweeping track is factory-set to
80 mm; it is steplessly adjustable if the
brush roller wears down.
 Check tyre pressure.
 Switch off suction blower.
 Drive sweeper on to a smooth, even
surface covered with a visible layer of
dust or chalk.
 Roller brush and side brush control le-
ver (1) backwards: Switches the roller
brush on.
Roller brush control lever (3) back-
wards: Lowers the roller brush.

Allow the roller brush to run for approx.
10 seconds.
 Roller brush and side brush control le-
ver (1) to middle position.
Roller brush control lever (3) forwards:
Raises the roller brush.

Drive machine backwards.
 Check sweeping mirror.
The sweeping track should have an even
rectangular shape which is 80-85 mm wide.
 Undo and adjust the stop screw for
wear adjustment (12).
Stop screw at the top: narrow sweeping
area.
Stop screw at the bottom: broad sweep-
ing area.
 Tighten the stop screw again.
 Check the sweeping area of the roller
brush again as described.
 The side-brushes lift up.
 Drive sweeper on to a smooth, even
surface covered with a visible layer of
dust or chalk.
 Lower the side brushes using the con-
trol lever and allow them to run for ap-
prox. 10 seconds.
 The side-brushes lift up.
 Drive machine backwards.
 Check sweeping mirror.
Check hydraulic unit
Check coolant level
Checking and cleaning water/hydraulic
oil cooler
Checking roller brush
Replacing roller brush
Check and adjust roller brush sweeping
track
Check and adjust sweeping track of the
side-brush
27 EN