Where does the thermal relief valve go on a Honda Excell XR2600 Pressure washer?

pressure washer pump parts image

Greg

I have a 5hp Honda Excell XR2600 pressure washer. I talked to the reps on the phone and they told me it was the thermal relieve valve was the problem I was having. It would make pressure sometimes and then othertimes not. I got the part 16484 and I just don't see where it goes. I have had the pump off and I still don't see where it goes. Any help would be appreciated.

Answer
I'm afraid the rep may have mislead you. The thermal relief valve only activates if the pump over heats by releasing hot water from the pump to make room for cooler water. It does nothing for making pressure. The pressure problem you describe would be connected with either the pressure relief valve, or the pump valves, or both.

Type of oil required for pressure washer pumps?

Al

I have a 3500 psi simpson pressure washer. Bought in 1997 but hardly used. What type of oil does the pressure pump requires? Although I did not use it more than 30 hours but the oil level seems to be low.
Thanks,

Answer
I use straight 30 weight, but the link below suggests a special blend for the manufacturers motor.


".... and made a visit to the local Napa Auto Parts store looking for oil. The guy told me to use 30 weight Non-Detergent oil. He said heâs worked with many a pressure washer and they all took the same oil."

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