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Pressure Washer Pump Oil #5425168 05/09/20 11:20 PM
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Propflux01 Offline OP
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Simpson 3100. I've had it for about 6 years. I wanted to change the pump oil for PM reasons, but manual states no service needed. Pump has no visible plugs to add or remove oil, but I did find this sticker on the bottom of the pump. Anyone know how to go about this if its possible? [Linked Image]
[Linked Image]


2014 Hyundai Elantra
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Re: Pressure Washer Pump Oil [Re: Propflux01] #5425232 05/10/20 05:39 AM
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RyanY Offline
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The Simpson 3100 is a "maintenance free" pump that does not require oil change. Apparently the manufacturer expects the oil to last as long as long as the pump, at which point you buy a new one.


2007 Cadillac CTS 3.6L >130k miles; mix of PUP/Magnatec 5W-30 + ACDelco PF2129G

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Re: Pressure Washer Pump Oil [Re: Propflux01] #5425240 05/10/20 05:58 AM
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tundraotto Online Content
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Change it with SAE30 non-detergent oil.
Mag 1 makes a pressure washer specific one for cheap.
You will have a hard time finding a non-detergent 15W-40.

Re: Pressure Washer Pump Oil [Re: Propflux01] #5425242 05/10/20 06:09 AM
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Mainia Offline
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In our CAT pressure pumps we use an IOS 68. We use a special synthetic industrial oil from Summit Industrial Products (Kluber Oil). For ease of getting oil on your side, you should just get oil for a CAT pump that has the add-pack for those small pumps.

https://www.amazon.com/CAT-Pumps-Pressure-Washer-Pump/dp/B0000AX3WI/ref=sr_1_1?crid=IBOJX7RFMD85&dchild=1&keywords=cat+pump+oil+iso+68&qid=1589108920&sprefix=CAT+pump+oi%2Caps%2C176&sr=8-1


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Re: Pressure Washer Pump Oil [Re: Propflux01] #5425263 05/10/20 06:48 AM
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Oildudeny Offline
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As mentioned might be a non serviceable pump.. You can always contact the manufacturer.

Re: Pressure Washer Pump Oil [Re: Propflux01] #5425302 05/10/20 08:01 AM
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dlundblad Offline
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You can use automotive engine oil in a pump issue free. I’ve seen it done before in industrial settings issue free. 1 was at a carwash with Cat pumps the size of a small engine with good ol Mobil 1 10w30.

That said, if there’s no drain and fill plug, about all you can do is let it be unless you want to tear into it and possibly risk damaging a good working pump.


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Re: Pressure Washer Pump Oil [Re: Propflux01] #5425317 05/10/20 08:22 AM
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Belker Offline
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Propflux01,

The webpage listed below has some service information for your pump along with a copy of the owners manual and a parts schematic. Hopefully there is enough information there to help you with the oil change.

Belker

https://www.allpartsinc.com/oem-pump-kit-3400-psi-3-4-shaft-520002.html

Re: Pressure Washer Pump Oil [Re: Propflux01] #5425448 05/10/20 10:36 AM
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Oildudeny Offline
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I wouldn't use detergent motor oil in a pump or compressor. You'll get foaming.

Re: Pressure Washer Pump Oil [Re: Propflux01] #5425507 05/10/20 11:51 AM
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Propflux01 Offline OP
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Thank you for the responses.
AS with most items, I want it to last longer than the MFG wants me to have it.
I didn't expect to fond a 15/40 oil, and have pump oil in a 30 W here now.
Contacting the MFG will get me the same information I get in the manual. "Your pump does not need to be serviced" Neither does those "lifetime fill" transmissions.. But this is BITOG...
Yes, tearing into it wasn't my first choice.
Thank you Belker, I will look into that!
I know that is the norm for compressors as well.


2014 Hyundai Elantra
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Re: Pressure Washer Pump Oil [Re: Propflux01] #5426509 05/11/20 02:49 PM
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nobb Offline
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Wow that must be a really cheap pump, even the cheapest ones I've seen had some sort of drain/fill port. With this unit I'm assuming you'd have to open up the casing via the 4 screws to get in there to do a drain + fill.

Re: Pressure Washer Pump Oil [Re: Propflux01] #5426573 05/11/20 04:17 PM
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dawgn86 Offline
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You should be able to unbolt the pump from the engine and then unbolt the pressure unloader valve assembly. Then unbolt the head of the pump unit, pour out old oil. Clean it out and usually they take 4-5 ounces of oil.


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Re: Pressure Washer Pump Oil [Re: Propflux01] #5426744 05/11/20 07:47 PM
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another Todd Offline
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Is there a drain or fill plug under one or both of those stickers? Seen that before when the manufacturer doesn't want you in there.


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Re: Pressure Washer Pump Oil [Re: Propflux01] #5429444 05/14/20 08:36 PM
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Propflux01 Offline OP
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No fill or drain at all. At first that's what I thought the sticker was hiding.


2014 Hyundai Elantra
2014 Hyundai Elantra GT
Re: Pressure Washer Pump Oil [Re: Propflux01] #5429445 05/14/20 08:36 PM
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Propflux01 Offline OP
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No fill or drain at all. At first that's what I thought the sticker was hiding.


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