Replacing The Valves - Kärcher HD 6/15-4 Service Manual

7.9 Replacing the valves

1 Valve screw
2 Valve
3 O ring
4 Screwed sealing plug

Unscrew the valve screws.

Remove the valve and O-ring.

Insert a new O-ring in the drilled hole.

Insert a new valve.

Check the O-ring of the valve screw, replace if
necessary.

Insert and tighten the valve screw (torque 40...45
Nm).
20
English 5.906-565.0 Rev. 00 (12/12)
7.10 Checking the pressure retaining valve

Unscrew the connecting piece.

Remove the check valve.
1 O ring
2 Valve body
3 Spring

Check the valve body, spring and O-ring.

Check the valve seat in the cylinder head.

Replace defect parts

Reassemble the valve.