MTM Replacement Pump Kit for Annovi Reverberi AR1864

This kit is specifically engineered for Annovi Reverberi pumps, particularly the AR1864 model. Before purchasing, verify the model number stamped on your pump's data plate to ensure it matches the AR1864 series, as internal components can vary significantly between even similar-looking pump models.

Yes, this kit includes the essential internal components for a standard service, specifically six valves and six o-rings. It is designed to address common pressure loss issues caused by worn seals and valves, though it does not include pistons or other major mechanical parts.

If you have basic mechanical aptitude and the right tools, this is a straightforward maintenance task. You will need to disassemble the pump head, clean the valve seats, and carefully install the new o-rings to ensure a proper seal, so having a service manual for your specific pressure washer model on hand is highly recommended.

You likely need this kit if you notice a significant drop in pressure, pulsating water flow, or if the pump fails to build pressure entirely. These symptoms often indicate that the internal valves are no longer seating correctly or that the o-rings have degraded, allowing water to bypass the pump chambers.

It is standard practice to apply a light coating of silicone-based grease to the new o-rings before installation. This helps them seat properly without pinching or tearing, ensuring a watertight seal and extending the life of the new components.