Replacing Seals to HPW Pump

Here we have a tutorial on how to change seals, orings and water valves to our HPW200 and HPW250 pumps. You can find the detailed instructions also from the HPW High Pressure Water Pump User manual in chapter 6. Read the user manual before any maintenance on HPW units. Here are the tools: HEX key size, 8 Small spike for removing seals and orings Rubber Hammer Special tool, a PE or other hard plastic rod for removing and installing the piston Torque wrench Lubrication, vaseline If you have any questions on maintenance or servicing DYNASET products contact us at