Replace The Piston - Kärcher HD 9/50-4 Cage Service Manual

Removing the oil seal rings
1 Special pliers to remove the oil seal rings
2 Oil seal ring
3 Pump casing
Remove 3 oil seals from the pump housing with the special pli-
ers.
Note
Make sure that the boring is not damaged when the oil seal rings
are removed.

4.9.6 Replace the piston

After replacing the oil groove rings, push the piston rod back
into the straight pushing guide and screw on the pistons (tight-
ening torque: HD 9/50, 20 Nm, HD 13/35 8...9 Nm). Clean the
threads before screwing, apply screw securing adhesive (solu-
ble) to the threading of the piston.
30
English 5.906-441.0 Rev. 01 (06/10)
19 shaft seal ring (order no. 6.367-032.0)
20 discs (order no. 5.116-095.0)
27 sleeves (order no. 5.111-035.0)
28 seal rings (order no. 7.362-029.0)
29 screws (order no. 7.306-244.0)
1
2
3