We have KMT SLV-E50/2 Pump. Now we have a problem that the HP Cylinder & HPCylinder Head are stucked/jammed each other. The treads doesn't get opened.

Any bodycan help us to remove this jammed parts?

The threads have probably galled and bound up.  The threads need to be coated with blue-lube prior to assembly.  My limited experience has taught me to use more blue-lube.  It is relativly in-expensive compared with the cost of replacement parts and downtime.

If you are able to unscrew the endcap, by whatever means, the threads will be damaged anyway, and the parts need to be replaced.

If the replacement parts are not readily available it is possible to clean the threads sufficiently to refit the parts to keep the machine operating.  If you don't have a thread file handy then try scraping the thread with a NC tap of the same pitch ( 3/8 - 16tpi works on Flow 60ksi ).  With patience, over several hours, the threads can be cleaned enough to be screwed together by hand.  Any resistance or binding will put you right back where you started.  Use lots of blue-lube on re-assembly.

Hi

If they have never been apart before then it really helps if you have the correct factory tool to turn the cyclinder.

We didnt but by useing a Strap Wrench and tapping the cyclinder with a rubber mallet we were able to finally unscrew them.

They are very very tightly bound together the first time but now come aprt nicely.

Also tapping with a rubber mallet  IS a factory approved method.

So brute strength and just a little bit of ignorance should work

Richard