Karcher K4 greasing and assembly

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Күн бұрын

Tips on assembling Karcher K4 heavy duty pressure washer.
Tools required: 6mm hex drive bit with a ratchet
TX15 drive bit and long (thin) extension

Пікірлер: 24

@Ninjavaz 7 ай бұрын

Just had the same issue. Replaced the top part of the pump. It’s a failing piece common to all of them. Couldn’t see the crack even with it disassembled and because the top metal shield covers it in use, you cannot really see where the leak is. I think I paid around £20 for the new part and machine is good as new again.

@Mr4fksake 23 күн бұрын

Yeah also had to renew both top sections, fixed it all for 50 quid and then Lidl sold brand new ones for 50 quid with a 3 year warranty !

@Mr4fksake 2 ай бұрын

Had the switch not working on mine, turned out to be the the internal spring that operates the alloy lever assembly onto switch, the spring had rusted and snapped, karcher rip you off for the complete assembly as they dont sell the spring separately, I managed to find a spring supplier who I got some from, rebuilt it which worked fine, also had to buy the top sections of pump assembly as they were causing a leak, rebuilt now works great ! 👍

@stimpetta 2 ай бұрын

Yes, I have seen this too. A nice stainless steel spring would be good! I have also fixed a switch that was not working. These can be levered apart and the contacts cleaned, reassembled and save you £6 for a replacement switch :)

@mileswhite8004 24 күн бұрын

Same issue here....Whee did you buy new spring? Please share links if you bought online?

@tonyprice7873 9 ай бұрын

It’s the black plastic control unit that’s leaking. You’ve left it in the shed with water in it over winter and the water has frozen causing the plastic to break. It needs a new control unit IMO.

@stimpetta 9 ай бұрын

That could be the cause. I found I made a mistake on reassembly. I put too much antiseize on the bolts and this seems to have stopped them going all the way in. After meaning out it all bolted together and worked

@S40TBS Жыл бұрын

Oops thats life 👍

@noormancrabb6428 Ай бұрын

A very useful video. Is there a torque setting for the head bolts?

@stimpetta Ай бұрын

Thanks. I'm not sure what torque they should be. But very tight... to loosen them you should need to stand on the metal body of the assembly and loosen with an allen (hex) key in a on a ratchet.

@garyowen598 Ай бұрын

12 - 15 nm according to the spec sheet

@marknaylor5814 Жыл бұрын

What grease is it? Part Number? I can't seem to find out the correct type online I couldn't make it out on the video. Thanks

@stimpetta 7 ай бұрын

Not sure of the part number. We think it might be some sort of PTFE grease (?) it costs £70 a tube from Karcher. TBH I might try some lithium grease at that price.

@mileswhite8004 24 күн бұрын

@@stimpetta £70 a tube? a brand new K4 is only 200!! they clearly want it to be uneconomical to repair them.

@tontobb8956 8 ай бұрын

I thought oil was supposed to be put into snide to lubricant

@CliveandJeanWest Ай бұрын

Hi I've had my K4 Full Control in bits several times and eventually replaced the cylinder head and hey presto it was no longer leaking. However after reassembling there is no high pressure. Does the bottom part of the cylinder head have to go in a specific place or as its triangular can it be any order. Or an other suggestions as to the problem and how its resolved? thanks

@stimpetta Ай бұрын

Yes, the bottom part can go in any way around. Sometimes a very small bit of dirt can block the holes in or out of the plastic head. I (now) always take all the white plastic valves and springs out and give them a wash before reassembly. Hope this helps. Oh and don't forget to clean the pull out plastic filter where the garden hose connects to the machine.