English 5.906-548.0 Rev. 00 (04/12) 791 Sleeve with throttle bore2 Pump head3 Suction valve4 Suction valve (removed) Remove the suction valves using a special pliers. Check the suction valves for leaks. Insert the suction valves (observe installation po-sitioning) with greased seals. Install the suction jumper.The high pressure valves are secured with valvescrews.1 Pump head2 High pressure valve3 Valve screw4 Valve screw Unscrew the valve screws. Remove the high pressure valves using a specialpliers. Check the high pressure valves for leaks. Insert the high pressure valves (observe installa-tion positioning) with greased seals. Screw in the valve screws with new and greasedseals.1 Inlet hose2 Water fine filter3 Threaded piece Unscrew the supply line from the water fine filter. Unscrew the casing from of the water fine filter. Take out the filter sieve.1 Filter casing2 Filter sieve3 Flat seal4 Threaded piece5 Flat seal, suction jumper6.6.6 Remove the high pressure valves.6.7 Replace the water fine filter.