Kranzle Bully 980 TST [21/44] Pressure gauge shows little pressure the water from the nozzle comes in

Kranzle Bully 980 TST [21/44] Pressure gauge shows little pressure the water from the nozzle comes in
Unscrew all 6 valves, one after the other
(hexagonal brass screws, 3 in a row,
vertically and horizontally)
21
Pressure gauge shows little pressure, the water from the nozzle comes in
squirts: Most likely the valves are soiled or sticky.
The pressure gauge shows little pressure
despite fully turned up pressure regulation.
The water from the lance comes in squirts.
The HP hose vibrates.
(Inside the pressure gauge is no water but a
filling with glycol to damp the vibration of
the pointer.)
Take out valve body (with green or red
plastic coating) and O-ring by means
of needle nose pliers. Check O-ring for
damage. In case of a damage the O-ring has
to be replaced.
Take a wire (paper clip) and clean valves
under running water. Also clean valve seat
inside the pump.
Do not forget the O-ring during reassembly!

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