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Milwaukee Pressure washer leaking water

If your Milwaukee pressure washer is leaking water, the pump assembly is the most likely source. A worn pump assembly can leak from the pump as internal seals, o-rings, or other components deteriorate. If the pump is several years old and the pressure washer is used often, replacing the complete pump assembly is usually the most reliable repair. For a newer pump or occasional use, rebuilding the pump or replacing the pump seals may correct the leak. A damaged pump, pump head, manifold, or pump seals can also cause a Milwaukee pressure washer leaking water from inside or underneath the machine. Another possibility is the thermal release valve. This valve opens during normal operation when water trapped in the pump becomes too hot, especially if the pressure washer is left running without spraying. Check whether the water leak stops after the unit cools and is used correctly. Before servicing, disconnect power and shut off the water supply. Enter your model number to find the exact replacement pump assembly, pump, thermal release valve, or seal kit for your specific Milwaukee pressure washer.

01 - Milwaukee Pump Assembly

You may need to rebuild or replace the pump assembly. If the pump is more than a few years old, and you use the pressure washer fairly often, replace the pump assembly. If the pump is relatively new, and you don’t use the pressure washer often, either rebuild the pump assembly or replace the pump seals.
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02 - Milwaukee Pump

You may need to rebuild or replace the pump. If the pump is more than a few years old, and you use the pressure washer fairly often, replace the pump. If the pump is relatively new, and you don’t use the pressure washer often, either rebuild the pump or replace the pump seals.
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03 - Milwaukee Thermal Release Valve

The leak could be due to the normal operation of the thermal release valve. The thermal release valve allows hot water to exit the pressure washer if the water temperature becomes excessively high. If the pressure washer is left running while it is not spraying water, the water in the pump will begin to heat up. When the water temperature rises above the acceptable limit, the thermal release valve opens to allow the hot water to exit the pressure washer.
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Frequently Asked Questions

Why is my Milwaukee pressure washer leaking water from the pump or bottom?
Is water leaking from the Milwaukee pressure washer thermal release valve normal?
Should I rebuild or replace the Milwaukee pressure washer pump if it is leaking?
How do I find the correct Milwaukee pressure washer pump or seal kit?
What should I do before checking a Milwaukee pressure washer that is leaking water?

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