Pressure washer dumpster find

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Mar 2, 2004
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4,391
Location
Kentucky
Work was throwing out a Dewalt pressure washer with a Honda GX200 engine on it. I remember them buying it in 2017, I bet it had about 15 hours on it before the pump went bad. It got shelved when they bought another one and has been collecting dust since.

While doing some spring cleaning this year, it was headed for the dumpster, so I collected it. Despite sitting for years, the engine fired up on first pull but the AAA brand pump on it would do nothing but put out static pressure.

Went on Amazon and purchased a Triplex pump that wasn't made in China. Much larger unit physically (same specs though, ~3GPM, 3400PSI) made in Canada. It barely fit-- has about 1/4" of clearance between hose fittings and the frame. Bolted up nicely but can't test it until I get some washers (fitting on the pump has slotted holes) and an adapter to change from the quick connect fitting (new pump) to the regular screw on type so I can use the hold/wand that I have.

Have some home projects to do (deck refinishing primarily) where my converted diesel pressure washer just doesn't have enough juice. This "new" unit should fit the bill nicely.

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Nice!

I ordered a pressure washer over 30 years ago from Harbor Freight. I ordered a Briggs motor with whatever pump was supposed to go with it. I was shocked when I got a Honda GX160 engine, and AR pump. It lasted for almost 15 ish years. But my brother borrowed it. I think he let the pump overheat, which blew the pump.

I put a Cat pump to replace it. I also put a pop off valve, mesh pre water filter etc on it. Motor is perfect.
 
I did something similar with a pressure washer frame and engine I bought for $25. Wanted a horizontal shaft engine. I had a new pump from a previous project where I ordered the wrong pump and never returned it.
 
Work was throwing out a Dewalt pressure washer with a Honda GX200 engine on it. I remember them buying it in 2017, I bet it had about 15 hours on it before the pump went bad. It got shelved when they bought another one and has been collecting dust since.

While doing some spring cleaning this year, it was headed for the dumpster, so I collected it. Despite sitting for years, the engine fired up on first pull but the AAA brand pump on it would do nothing but put out static pressure.

Went on Amazon and purchased a Triplex pump that wasn't made in China. Much larger unit physically (same specs though, ~3GPM, 3400PSI) made in Canada. It barely fit-- has about 1/4" of clearance between hose fittings and the frame. Bolted up nicely but can't test it until I get some washers (fitting on the pump has slotted holes) and an adapter to change from the quick connect fitting (new pump) to the regular screw on type so I can use the hold/wand that I have.

Have some home projects to do (deck refinishing primarily) where my converted diesel pressure washer just doesn't have enough juice. This "new" unit should fit the bill nicely.

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I have the feeling you were keeping your eye on this pressure washer to see when they might toss it.
 
I replaced the old ‘ wiggle wobble ‘ pump on my Excell Honda powered pressure washer with a new upgraded axial pump a couple of years ago. I ran it for 2 days straight on my deck, sidewalks and driveway without a hiccup. What a difference in smoothness and water pressure for less than $100!

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I replaced the old ‘ wiggle wobble ‘ pump on my Excell Honda powered pressure washer with a new upgraded axial pump a couple of years ago. I ran it for 2 days straight on my deck, sidewalks and driveway without a hiccup. What a difference in smoothness and water pressure for less than $100!

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Love that style of house. Awesome deck too!
 
I replaced the old ‘ wiggle wobble ‘ pump on my Excell Honda powered pressure washer with a new upgraded axial pump a couple of years ago. I ran it for 2 days straight on my deck, sidewalks and driveway without a hiccup. What a difference in smoothness and water pressure for less than $100!

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I am not a real fan of using anything more than an electric pressure washer and surface cleaner (the round attachment) on a deck. It raises the grain on the wood.

There is actually not all that much around a house one should use the pressure of a gas pressure washer on. House itself should be soft washed. Maybe concrete sidewalks and driveways. Bulldozer if you have one.
 
I have the feeling you were keeping your eye on this pressure washer to see when they might toss it.
You bet. I reminded our maintenance guy at least a time or two that all it needed was a new pump; fell on deaf ears. It took a few years but as soon as worked slowed down and guys were cleaning out old storage spaces, I knew it was time.
 
What brand pump did you get?
I bought this unit on a whim: https://www.amazon.com/dp/B085FTK7G6

Had the best price (above the cheap Chinese cheapos) and reviews. Box says made in Canada but I see nothing on the pump housing itself. Judging by the size versus the OEM one, there's probably some meatier bits inside, at least I hope.

I was wrong, it's rated 3000 PSI which is fine with me. If it holds up I'll be plenty happy.

Nice! What oils did you fill the pump and engine with?
I used Motorcraft 15w-40 (Powerstroke) diesel oil, I had a little over a quart leftover from another oil change which worked out perfect. I try to use my orphan, leftover oils for OPE when possible.

Pump came prefilled (right on the fill mark too) but specs 15w-40 non-detergent oil. I'll change it out at about 5 hours or less (as manual recommends) and then every 25-50 hours thereafter. Not sure where to find a 15w-40 non-detergent. Any suggestions? Straight SAE40 non-detergent is available where I live, not sure how important the 15w is.
 
People think they can leave the pressure washer running (without trigger pulled) while they have lunch and run a few errands and watch a game. Wrong.

If it's much more than just a minute or two, shut down the engine. The exception is a setup with a big tank where water is pushed into the tank for overload vs just circulating within the pump and the overload hose
 
Nice!

I ordered a pressure washer over 30 years ago from Harbor Freight. I ordered a Briggs motor with whatever pump was supposed to go with it. I was shocked when I got a Honda GX160 engine, and AR pump. It lasted for almost 15 ish years. But my brother borrowed it. I think he let the pump overheat, which blew the pump.

I put a Cat pump to replace it. I also put a pop off valve, mesh pre water filter etc on it. Motor is perfect.
As long as the pump has oil in them I don't think they can over heat, I guess maybe if someone were to run it full speed with no flow through the pump.
I take my pressure washer and fill it up with gas and run it at 4,000rpm till it runs out of gas, never letting off the trigger the whole time and the only thing that's ever killed a pump for me is surprise freezing temps.
 
Nice! What oils did you fill the pump and engine with?
I always fill pumps with gear oil, usually mobil1 75w-90 and put a 20w-50 in the engine because pressure washer engines get hot. I've probed mine and caught it at 280F a few times, it's usually always over 260F.
The w part of the oils are more or less irrelevant on a pressure washer as you're very unlikely to run it below freezing.
 
Can any of you help with this dilemma? The new pump comes with a quick connect fitting.

The hose/wand I have has the ordinary (I presume residential) fitting. I can't find anything that will convert one to the other. I tried Amazon, all they have are adapters that connect the quick connect to pipe fittings, nothing that will accept the hose connection.

I tried taking the fitting off the old AAA pump that accepted a normal hose, but the thread is different; no way to install it in the new pump. I need an adapter to convert pump fitting to hose fitting as pictured.

If one doesn't exist I guess I'm forced to buy a new hose/wand but the one I have is in good condition and works just fine.

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As long as the pump has oil in them I don't think they can over heat, I guess maybe if someone were to run it full speed with no flow through the pump.
I take my pressure washer and fill it up with gas and run it at 4,000rpm till it runs out of gas, never letting off the trigger the whole time and the only thing that's ever killed a pump for me is surprise freezing temps.
Not true. There are nylon valves (or parts of the valve) in the pump. With the trigger not pulled the water goes round and round through the unloader back to the pump and gets a little hotter with each pass. Probably several passes a second. The water quickly gets hot and at some point will damage or melt nylon parts. While they probably can be rebuilt, why risk it?
 
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