Question about Karcher G3025OH Pressure Washer

1 Answer

The unloader valve seems to be hanging up!

I can't get the unloader valve to stop hanging up. I have removed it, lubed it several times and it works for a few minutes then hangs up again. I can't seem to get it to work properly. I don't want to buy a new part until I'm sure it needs replacement. This washer is about two years old and has only been used a half a dozen times. The unit has been stored with the hose disconnected and the pump drained, inside a heated garage. The unloader is whistle clean as well as the housing, so I just do not understand what is causing the problem.

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 174 Answers

The o-rings on the unloader may be worn out. Also you have to lube it with extremely good waterproof grease

Posted on Sep 17, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Husky 1800 Pressure Washer motor will not turn off when wand trigger is released


I think you have one of two things going on hear, an overpressure problem or a carburetor issue with the engine.

Jul 25, 2017 | Husky Garden

1 Answer

My truck builds air 4 or 5 times in a row on its own. Then all the sudden it stops and wont. If i put it in nutral and rev it up real high it will start building air again. What is causing this?


Sounds like your Unloader is hanging up. What type truck and year?
1 check air line to govenor make sure no leak.
2 Check dis-charge hose or pipe.
3 Check to make sure air drier pop off valve is not leaking
4 The unloader valve in compressors become gummed up and o-ring break and cause valve to hang up in open position which prevents it from building air.
Good luck

Jan 31, 2016 | Cars & Trucks

2 Answers

I have a vt631401aj campbell hausfeld compressor. when it builds pressure to 135 psi, the compressor shuts down and immediatly starts dumping air until it goes down to 90 psi. It then stops dumping the...


John: I had a similar problem with a brand new CH-made compressor. The problem was not with the unloader valve, but with the check valve located where the air from the pump enters the tank. The check valve was not seating correctly due to brass filings from manufacture. The defective check valve was allowing air to escape back the wrong way from the tank to the pressure switch and through the unloader valve. This backflow from the tank would start to happen when the pump stopped after reaching high pressure. The back flow would continue until the pump restarted at the low pressure point. This cycling would continue as you described. Once I cleaned the check valve, everything (including the unloader valve) started working correctly. I hope this helps. And remember, don't work on these when they are under pressure and always wear safety glasses.

Sep 18, 2011 | Campbell Hausfeld Air Tools & Compressors

1 Answer

Engine runs, but stopped pushing water


First I would start with the simple solutions.1. Check to see if your water pressure is good. 2. Check the pressure hose and tip for ubstructions. 3. Check the inet strainer and make sure you have no leaks. 4. Check the unloader valve which is located usually in the area of the pipe for your pressure hose connection. Remove and clean valve and port the valve sits in and lube with white lithium grease light coating. Try machine, if this doesn't work remove pump and inspect all the check valves and pump body for build up of gunk. If you find this you can clean with carburetor cleaner or you may have to purchase a rebuild kit. If you have problems finding the unloader valve go to jackssmallenginerepair.com and do a parts look up and you will see where this valve is. You can also purchase the rebuild kit on this site. Hope this helps.

Jul 24, 2011 | Karcher 2500 PSI Pressure Washer

1 Answer

Pressure washer starts fine and sprays fine but will not continue to idle after nozzle trigger is let go. Have to have trigger pulled to start & cannot let go without unit stopping.


The pressure unloader us usually the first part/s that fail. An unloader can fail resulting in no or very low pressure or good pressure, however will not unload when trigger is released and stall the motor. Look at breakdown for your pump and determine if unloader parts are available and reasonable. If too costly to replace these parts then install an ez start valve to help start engine and tie back wand handle to deal with unloader problem (workaround). Ez start valve can be seen here:
http://www.cmcpwe.com/accessorystartvalve.html

When not in use, store washer with oil in pump to displace the water. The oil will help lube internal parts and possibly cause the unloader to begin working (if stuck due to debris/rust). You can find a gizmo to help you feed oil into pump on ebay /other web locations. Good luck with your repair.

Apr 27, 2011 | Dewalt DPD3100 Gas Pressure Washer

1 Answer

Engine is on but when i press nozzle no water coming out


If you remove the tip, will it work? If so, unloader valve is sticking. Needs to be removed and lubed with lithium grease.

Jul 02, 2010 | Honda Maxus Pressure Washer MX5222

1 Answer

Pressure washer worked fine and suddenly no


If you remove the tip, will it work? If so, unloader valve is sticking and needs to be removed and lubed with lithium grease.

Jun 29, 2010 | Honda 2500 PSI Gas Pressure Washer

2 Answers

I have a sticking unloader valve in my Karcher 3050. where is it and how do I fix it?


Hello:
Here is a schematic. On page 2.1, part #1 is the unloader valve. You need to remove it and lube it with a very good waterproof grease. Also insure the O-rings are in good shape and the spring action is working.

Jul 07, 2009 | Karcher G 3050 OHR Gas Pressure Washer

2 Answers

Unloader valves


Yes, your compressor will work just fine with a Load Genie continuous run unloader from www.grainger.com. The part number is 4tk14 with a cost of about 45.00. This unloader has a built in check valve so you can remove the present in-tank checkvalve and save it for later use. All that you need to do is install the unloader at the tank and compressed air in to top of valve. (you may have to buy extra fittings to make it work with your tubing size) Adjust valve to open just before the pressure switch cut-off setting. The unloader will bypass the compressed air and will have less stress on the motor. You will not need to use the present unloader at the pressure switch. The only caution is to manually unload the Load Genie upon initial start if there is pressure in the line. Good Luck with your project.

Mar 31, 2009 | Northstar Electric Stationary Air...

Not finding what you are looking for?
Karcher G3025OH Pressure Washer Logo

353 people viewed this question

Ask a Question

Usually answered in minutes!

Top Karcher Garden Experts

John Trevino

Level 3 Expert

1388 Answers

andy just round the...

Level 1 Expert

47 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you a Karcher Garden Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...