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post #1 of 2 Old 02-22-2018, 11:33 AM Thread Starter
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Replacement Pump / 5hp

I got several years of use out of a pressure washer that was under my deck when I bought my house. It a Honda GX140 engine with, best we can tell, a CAT pump from the 80s. Unfortunately it stopped pumping water, the exact point of failure I don't know. I went through the bypass, replaced one broken spring, no change. The engine works perfectly, so I'd just assume get a working pump on it again. I'm not going to spend a fortune, so my guess is that nothing I buy is going to live up to that old CAT. 1 - Just for use by a homeowner, which brand of pump has anybody had good luck with? 2 - Should I even entertain rebuilding the old pump given that I can't even identify it for certain? 3 - Does anybody know of an option that would allow me to drop the hose in the lake instead of using a pressurized water source, even if it meant sacrificing some pressure?

Hand me down equipment -
1986 Wheelhorse 417-A
1989 Toro 21"

Rescued equipment -
1986 Honda GX140 / High Volume Pressure Washer
2003 MTD 550 Edger
2002 Toro Personal Pace

and I did actually get something new -
2005 Stihl Backpack Blower
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post #2 of 2 Old 03-04-2018, 10:53 AM
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Re: Replacement Pump / 5hp

Quote:
Originally Posted by rwall10597 View Post
I got several years of use out of a pressure washer that was under my deck when I bought my house. It a Honda GX140 engine with, best we can tell, a CAT pump from the 80s. Unfortunately it stopped pumping water, the exact point of failure I don't know. I went through the bypass, replaced one broken spring, no change. The engine works perfectly, so I'd just assume get a working pump on it again. I'm not going to spend a fortune, so my guess is that nothing I buy is going to live up to that old CAT. 1 - Just for use by a homeowner, which brand of pump has anybody had good luck with?
I have used this on a similar PW and it worked fine. There are more expensive ones out there but this did the trick. https://arpumpsonline.com/product/rm...washer-pump-2/

Quote:
2 - Should I even entertain rebuilding the old pump given that I can't even identify it for certain? 3 - Does anybody know of an option that would allow me to drop the hose in the lake instead of using a pressurized water source, even if it meant sacrificing some pressure?
Couple problems with this scenario. First and foremost, most PW have a pressure detect switch that determines that there is presence of water - which requires the pressure from the faucet. That protect the unit from running while dry which would lead to burning up the pump. (at least that's the way the two of mine are. Second, there is no suction that would draw the water in, and also if it did you run the risk of dirt / sand being drawn in and ruining the pump. Just my 2.
MikeC

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