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What kind of oil do I use in my pressure sprayer gemric brands to

What kind of oil do I use in my pressure sprayer water pump? Dewalt 3750

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Check with your local hardware store and your owners manual. Usually the oil to be used in a motor like that is SAE 20 3-in-1 oil that can be picked up at any hardware store. It comes in a red white and light blue bottle. (Note: Do not mistake it for the 2-in-1 oil that comes in the black and white bottle).

Posted on May 15, 2010

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Posted on Jan 02, 2017

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Does a 2/3 HP .40GPM Campbell Hausfeld Airless Paint Sprayer require any kind of oil if so what kind and how much


airless sprayers have a pump that pumps the paint through a jet at pressure . there is no oil and it is vital that when finished that the pump be spotless after cleaning

Nov 12, 2015 | Campbell Hausfeld Air Tools & Compressors

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How do i change the oil in my dewalt 3750 pressure washer 4.0 gpm


It not going to be the oil but is either the check valves or water packing if not both.

The time you need to change the oil is if it is water contaminated.

Jul 01, 2015 | Dewalt Garden

1 Answer

Hi, My Dewalt 3100 pressure washer pump wash leaking water from a check valve or overflow plug Do you know whats wrong?


The Dewalt 3100 came with 2 different pumps. The Blue Cat pump and the oil free pump that was made by DeWalt.
You may just have a bad Thermal relief Valve on the unit.

You can find the parts diagram at www.allpartsinc.com

Sep 08, 2011 | Dewalt DPH3100 Gas Pressure Washer

2 Answers

What type of oil do i put in the DPD3100?


In the Pump Dewalt recommends
DeWalt DP70 Pressure Washer Pump OilIn the engine Dewalt Recommends
SAE 10W-30 is recommended for general use

Jun 26, 2011 | Dewalt DPD3100 Gas Pressure Washer

1 Answer

Can I use a 200 gal. water tank that is not pressurized for my dewalt dp3900 3750 psi pressure washer? the manual says that you should use a water source that has a minimum of 20 psi 5 gallon per miniute....


Hello,
My name is Dane and I am going to help you solve your problem.
A pressure washer pump is lubricated by the water running though it. You never, ever even start one when not connected to an approved water source. If the manual says that it has to have that presure, don't risk it. I would get an auxillary pump and install on your tank.
Well, I hope I've helped. If you found this information useful, please leave me some THUMBS UP if you think I'm deserving! :-) Thank you! Dane

Dec 05, 2010 | Garden

1 Answer

Got a Dewalt 3800 PSI Pressure Washer with 4.0 GPM with a Honda GX 390 gas engine. Tipped it up to roll it out to my truck and got a big puddle of water with what looked like Pump oil in the puddle. Can...


Could very well be. Did you check the oil level and condition of oil? If its too full or if its light brown milky, then water has entered crankcase. Pressure washer pumps cannot stand to ever let run dry. Even a little. Also excessive idling will overheat pump if it doesn't have a thermostatic relief valve that allows some more cool water to enter pump.If it doesn't have one add one. Find your PUMP mfg and model number. IF it's pumping good now and no leaks, quick replacing the seals will save big future repairs. www.pressure-washer-parts.com has lots of info on many pump manufactures. Or get some seals from dewalt.

Aug 11, 2010 | Dewalt 3800 PSI Pressure Washer

1 Answer

My DeWalt Gas Pressure Washer Model DPD3100 is


Hi

Just try the following steps

  • Inspect the water supply connections
  • Inspect the drain hose
  • Inspect the water pump
  • Inspect outer tub for cracks or corrosion
  • Inspect the tub seal
  • Inspect the tub bearing
Good luck

Regards

PCmania

Jul 05, 2009 | Dewalt DPD3100 Gas Pressure Washer

1 Answer

I have had two dewalt pressure washers in the last year. Both ended up having major oil leaks. I have read the instructions over and over and find nothing that I am doing wrong. Now on my 3750, dewalt is...


First off are you taking it to a factory owned or an authorized service center? There is a big difference in the quality of service that you receive. A lot of times DeWALT gets a bad rap because of poor service from authorized service centers. IF you take it to a DeWALT owned center they have guaranteed repair cost and will take good care of you. Next question how old are these units? Where is the leak? How often are you using them-ie how many hours per day, week....Also the oil leak is it in the engine or pump? Neither of those are manufactured by DeWALT they buy the engine from Honda and the pump on yours should be a general-so how could that be DeWALTS fault?

Mar 24, 2009 | Dewalt 3800 PSI Pressure Washer

2 Answers

I have a dewalt 3750 pressure washer, when I pull the trigger on the spray wand the engine dies


I worked at a tool rental center while attending college and learned many tips and tricks about Dewalt and other brand pressure sprayers. Your machine probably has a 13 hp honda and has max pressure of about 3500 to 3700 psi. Most of the problems that customers had were engine related due to severe working conditions including totally wet engine /plug, wet air filter, and or other problems that were easy to remedy. We would set the pressure regulator to minimum pressure and explained to the customer how to increase the pressure as necessary but only after the engine was completely warmed-up to running temp to prevent engine stall. Your machine has a throttle lever between the tank and carb that should be set to max if you are going to set pressure at or neer max range. Most cleaning jobs do not need much pressure. Use lowest pressure to get the job done. Your engine developes around 13hp at about 3600rpm. If you want to maximize the life of you sprayer, then use your machine at about 70% of capacity or about 2000 to 2500 range that will allow you to run your engine slower increasing lifespan. Your sprayer is likely rated at 4 gallons per minute so make sure that the tip is that capacity. The tip has the size stamped which would show the fan degree and flow in gpm. The wrong tip, say a 3.5 gpm will strain the engine to point of stop because the smaller tip increases pressure. Most engine stall is due to high pressure setting on new machines. Lower pressure when warming-up machine and use max pressure rarely when necessary to max life. Please email for other information/questions or simple tests to determine faulty parts, good luck.

Jan 30, 2009 | Dewalt 3800 PSI Pressure Washer

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