Tuxing double cylinder - crank screw removal

Exactly, on these things there is no maintenance schedule.
Keep it cool, change oil regularly, don't use auto stop, let the water pump continue pumping for a length of time after shutoff
Ej zdravo Horvát :)
I can recommend you try a high performance oil for european twin turbos. (much higher boil point, less odour).
I am using this one in Canada

20241222_105243.jpg
 
Everything has been rebuilt.
Yesterday I've picked up new oil.
If I get some spare time, I'll do a test run today.

Most interesting thing that I have found inside was in the splitter block (aluminium block from where HP air goes to pressure gauge, filling hose, burst disk, bleeder valve)
In that block there is one last final desiccant filter.
It's been pulverised from the pressure
View attachment 536191
That is strange,
 
Haven't really checked the c clips.
They don't have to be tight in their grooves, they just need to be in the grooves enough not to fall out so the part they are holding is secured in its own place
I beg to differ. A c clip/snap ring that can move in the piston wrist pin groove can erode the groove material and become looser in the groove. This is a disaster in action for engines, and not something I risk in compressors. All my training in the mechanical fields and nearly (70) years of experience advises against that.

Even the "wire ring" type wrist pin clips need to be placed with the open end of the snap ring pointing in line with the stroke or it is likely that the ring will loosen, come out of the groove and destroy piston & cylinder. Two stroke engines often suffer this failure.

If someone doesn't agree, that's up to them. I am simply offering the caution in case it is helpful to someone.
 
I beg to differ. A c clip/snap ring that can move in the piston wrist pin groove can erode the groove material and become looser in the groove. This is a disaster in action for engines, and not something I risk in compressors. All my training in the mechanical fields and nearly (70) years of experience advises against that.

Even the "wire ring" type wrist pin clips need to be placed with the open end of the snap ring pointing in line with the stroke or it is likely that the ring will loosen, come out of the groove and destroy piston & cylinder. Two stroke engines often suffer this failure.

If someone doesn't agree, that's up to them. I am simply offering the caution in case it is helpful to someone.
Thank you for sharing your knowledge and experience! I've just learned something new.

Up to date, all my experience with c clips was in a non crucial, non high pressure uses so, honestly, didn't pay much attention on them in the compressor
 
I beg to differ. A c clip/snap ring that can move in the piston wrist pin groove can erode the groove material and become looser in the groove. This is a disaster in action for engines, and not something I risk in compressors. All my training in the mechanical fields and nearly (70) years of experience advises against that.

Even the "wire ring" type wrist pin clips need to be placed with the open end of the snap ring pointing in line with the stroke or it is likely that the ring will loosen, come out of the groove and destroy piston & cylinder. Two stroke engines often suffer this failure.

If someone doesn't agree, that's up to them. I am simply offering the caution in case it is helpful to someone.
Very interesting. And makes total sense.
 
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