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Troy-Bilt 020240-2 2,550 PSI Pressure Washer Parts
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Question: TROY BUILT 020293
I left the washer running for about 5 minutes while not using it. I continued to work fine that day. 2 days later I went back to finish, it started fine, the pressure built up but dropped as soon as i pulled the trigger. I continued to try to get it to spray ( about 5 times). Now it has no pressure at all on start. I have only used it 4 times. No troubles at all til now. I took it to a repair shop although I am not sure they really checked it. Their report was leaking/thermal bypass and wanted 280.00 to put a new pump on. A new washer costs 300. Is the repair price fair. Do I have an alternative?
Reply: TROY BUILT 020293
If the thermal bypass is leaking you should be able to see it. The thermal bypass is item #B7 on page B of the parts diagrams. If it is leaking it will be leaving a puddle under the pressure washer as you use the machine. $280 is way to much to replace that piece as it is located on the exterior of the pump and simply unscrews to replace.
In my experience most low pressure / no pressure issues are related to the unloader valve. Item #A on page B of the parts diagrams. The unloader will fail or become jammed with calcium deposits so that it can no longer operate properly. Replacing the unloader valve usually solves the problem and it is also an easy repair.
It is possible to melt the plastic cages around the hi and low pressure valves in the pump if the pump is allowed to idle for a long period of time without running any water through the wand. To determine if this is the case you would need to disassemble the pump and inspect the valves.
We have an article and video that you might find helpful. It explains how to diagnose and rebuild a pressure washer pump. The pump we use in our video is a Karcher brand pump so some of what you see will be different from your pump but the concepts will be the same. You can find the article and video here...
How to Repair a Pressure Washer.
I hope this helps,
Review: Troy-Bilt - 020240-2 Goes Bad Fa...
My Troy-Bilt washer is ~5 yrs old. I've used it 5 or 6 times, always drained after use. I tried it this year and the water outlet stem was broken at the weld. No pressure out of compressor. Expensive to fix and expensive to have it broke after so few uses. You buy cheap you get cheap