Dismantling The Pump - Kärcher HD 6/15-4 Service Manual

7.15 Dismantling the pump


Disconnect the water supply hose from the cylin-
der head.
(See "Dismantling the cylinder head".)

Remove the pressure switch.
(See "Removing the pressure switch".)
Note:
If the pump is to be disassembled afterwards, loosen
all necessary screws prior to disconnecting the pump
from the motor.

Loosen 4 screws.

Pull the pump off the motor.
1 Seal
2 Fitting key
24
English 5.906-565.0 Rev. 00 (12/12)
7.16 Replacing the oil seals

Dismount cylinder head (see "Dismounting the
cylinder head").
7.16.1Draining the oil

Place an oilpan underneath the pump.

Loosen 4 screws.

Remove the lid.

Drain and collect the oil.
Note:
If chips of destroyed pump components are visible in
the crankshaft casing or in the oil, the pump is dam-
aged and a repair no longer reasonable. In this case,
replace the entire crank drive.
7.16.2Removing the ceramic piston

Dismounting the ceramic piston (see "Replacing
the ceramic piston").

Remove copper discs.

Disconnect the pump from the motor (see "Dis-
mantling the pump")