Question about Coleman Powermate DuraBuilt 1400 PSI Pressure Washer
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Posted on Jan 02, 2017
SOURCE: Coleman Pressure Washer Problem
your pressure relief valve is stuck open. i know that may sound too simple but it depends on if you use a cleaner with the water when your using it , not flushing with clean water after use can cause the housing of the aluminum housing of the relief valve to corrode. the valve can't move back and forth as it should because the o ring won't slide.
Posted on Apr 21, 2009
SOURCE: coleman model APW-120 May have
Whar has happened is that your unloader / bypass valve is sticking. This is due to minor corrosion and having water in the unit over the winter. Most of the time they will sanp out it if you do the following:
Add 3 - 4 oz of oil into the water supply connection and briefly and I mean very briefly switch on the unit then right back off. Add more oil to the water supply connection and then let it sit overnight.
Then next day turn the unit on briefly and let it sit another 30 minutes. After this you connect all hoses making sure to purge the air our of the supply hose BEFORE you connect the to the unit. Then once you turn the unit on rapidly trim cycle the wand trigger. Your goal here is to cause a water hammer of the unloader / bypass valve to get the spring and cupped seal to move in the housing. Pause briefly and see if pressure builds then fan the wand trigger again. This can take a few minutes to get it to work but the routine of pausing waiting momentarily and rapidly tripping the wand trigger is what should get the unit going again.
If this does not work you will have to take the unit apart dis-assemble the unloader / bypass vavle on the output side of the pump and remove the corrosion on the spring and the housing.
Once your done cleaning up the bypass unloader valve before you put it back in the housing place a liberal amount of Lubriplate #105 White Grease on the spring and inside the housing on the mating surfaces. (#105 white grease is available at any Auto Parts store. It is in a 3 - 5 oz plastic tube)
Re-assemble the unloader / bypass valve an it should work like a champ.
Thanks for choosing FixYa.
Posted on Sep 16, 2010
Testimonial: " Thank You Kelly Sounds like a good solution I will give it a try Chuck clevenger "
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