I just want to say a huge thanks for posting this video. I was able to disassembly my unit, put it back together and no more surging pressure. Based on how the parts looked; I do feel it will need a rebuild. But, I decided to upgrade the pump to a 3000 psi unit instead. At least in the meantime this one is working again.
Hey Paul, I greatly appreciate the video. My Karcher (exact same pump) had a small leak. I ordered the black replacement seals (twice). Now watching you pull those seals out--I realize I put them in backwards! Hopefully problem solved--thanks brother!
Do you happen to remember where you ordered the seals from or what model# they would be under? I have a Karcher powered by Honda 2500 PSI 2.4 GPM looks to be this exact pump and it's leaking water. I would like to at least try to fix it myself but want to have the seals handy before I take it apart. I have never worked on anything myself, official 'flashlight holder' but my hubby isn't handy in that area and My dad isn't here anymore so I am winging it. If anyone knows it would be much appreciated.
Mine is still like new 10 years. Never worked correctly when new. Surging. Thought it was something simple. Hose, wand all new. Engine starts by second pull, no leak. The hole is where pump saver comes out when you spray it in. Funny nothing comes out when PRESSURE WASHING. TOOK ENTIRE PUNP APART. SEALS EVERYTHING GOOD..
A partially clogged nozzle tip makes this pump act like it has a problem. Clean your tip and hose out before tearing into the pump if you have weak or pulsating pressure issues.
I have the same Karcher unit you do. Honda 2650 PSI. I had to replace the engine gasket once. Fantastic unit, always starts on the first pull. Runs strong, at least until I lost water pressure as you did. Turned out all I needed to do was open up the pump like you, mess with and lubricate all the parts, and reassemble.....problem solved! I'll probably have to do so again to change washers, etc into the future. Still, it's a great unit. This was the video that helped me with the pressure loss. It is part 2/2. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-q2c2uUlP13s.html Part 1 can be easily found. I now have to figure out a slight oil leak.
I have the same unit and experienced the exact same symptoms you did, and I took the exact same measures. I just restarted it today and with a little attention to the spark plug, and refilling the gas, it started right up. It does leak oil, and I'm gonna try some stop leak after an oil change. Hopefully yours is still running.
Nice video, If the seals are defective you will get a milky oil ( mixture of oil & water ,look more of a grease than oil ) in the pistons' compartment , but your oil looks fine which means the seals are tight enough not to allow water in
Mostly true. This machine however sat for many years without being run. By the time I got it the seals were all dried out and had little cracks in the sealing lip. If I had run it we definitely would have had the milky messy oil you describe.
have a small water leak near the hole you spoke of in the front/bottom of the pump. went to rmove the 4 bolts that you firstly removed except the pump was still attached to the engine, whereupon oil immediately started draining from around the pump flange onto the garage floor. immediately retightened 4 bolts and went to RU-vid. was surprised at the oil. my intention for removing bolts was to apply 1184 sealant to all the pump flanges
I have same unit. Engine runs great, no pressure. Many times lubricated the valve on top. Anybody know what the model number of this pump is? And what might be a good replacement pump to buy new and put on the unit? Nice video, but I don't have the time to experiment and tear existing pump apart.
Question regarding the siphon hose intake: can you run sodium hypochlorite through this or is it strictly for soap mixtures? Asking because I'm looking at downstream injector solutions, but when I'm looking at this design, it seems like the siphon hose would already be introducing the sodium hypochlorite solution downstream from the actual pump itself. I have what appears to be the exact same pump. If anyone can answer, it'd be greatly appreciated.
I have a pile of water shooting out of the pressure relief valve area but it still holds decent pressure. Ive replaced the unloader valve but it still leak out of that area. Any ideas?
I too have not found a source. The pump remains disassembled. At some point I will find a kit and get it done. Currently too busy to upload. Thanks for watching Cheers
Thanks for the video. I'm getting ready to pull mine apart and take a look. Does anyone have any idea what part(s) typically are damaged when your pump is exposed to freezing. The Honda engine runs flawlessly (of course, it's a Honda) but no pressure at all when I squeeze the trigger. Tnx.
I have a question about Karcher frame ? Do you know what the washer is called that holds the frame wheel on. Also where would I purchase this special washer.
www.lowes.com/pd/Hillman-1-2-in-Zinc-plated-Steel-Axle-Cap-Nut-2-Count/3037082?cm_mmc=shp-_-c-_-prd-_-hdw-_-google-_-lia-_-126-_-fasteners-_-3037082-_-0&placeholder=null&ds_rl=1286981&gclid=Cj0KCQjwu7OIBhCsARIsALxCUaPvGKYzXaT1YVmQYoHVUtd9fvcKRAWXiQfzZ0BtdEg2urntBZQca-YaAkccEALw_wcB&gclsrc=aw.ds Sometimes called an axle cap or spider cap. The link should give you a start to find the size you need. Thanks for watching
whats the difference between a pressure pump that has a high PSI rate but low water flow rate and visa versa? I dont understand.. There are pumps with a high PSI pressure rate yet the water flow rate is only 12L per minute and there are pumps that are low PSI but high water ie 18L per minute..... how do you know which is stronger? You would think that the higher the PSI pressure rate the greater the water flow rate but its not the case! I just dont get it.
Think of your garden hose. Without your thumb water comes out at high volume but since its wide open there is no pressure at the end. Put your thumb over the end and pressure builds spraying a longer distance with more force. There is however a restriction(your thumb) that reduces the volume.
@@fixitallpaul4847 I get what your saying but that wasnt my question.... There are pumps out there with High pressure yet the water flow is low.... You would think that the higher the pressure the greater the flow? ie I purchased a pressure washer 4800psi with 12l per min water flow rate but i found it to be weak.....yet there are expensive pumps that are 3600PSI with 18L per minute flow rate. Both units use the same nozzle and gun yet different flow rate and power.
@@MrBat000 it may look like the same gun but I doubt it is. There is only so much water per min that can fit through the tip no matter how high the pressure.
@@MrBat000 Power = Flow * Pressure, so more liters per min o more pressure - more cleaning power. Normally nozzle size is a function of CFM and PSI, so 2 different machines could have same nozzle and gun, but normally more pressure with the same nozzle, you need more CFM.
Did you determine what oil goes in the housing? Also thank you for the video, I was about ready to give up last month was the carburetor this month it's more.
I do better organize if it wont be reassembled for some weeks. I seem to have a knack for remembering where it all goes......to a fault haha. Thanks for watching.
