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windscreen wipers do not work. what is to be a vacuum in the intake manifold? I have a 0.6 bar if this is correct? (I think that good) is another question pociśnienie is the same as measured in the intake manifold. and a vacuum pump. the pump should strengthen a vacuum? Vacuum is to be increased?

podcisnienie = vacuum

If my conversion is right, 0.6 bar is about 17 inches of mercury so that should be good.

The vacuum pump does not increase that amount. It is in series with the manifold source and the way it's valves work, can take over and provide some vacuum if the manifold supply is low. That might happen when the engine is under heavy load or the throttle is open a large amount. The pump provides enough to keep the wipers operating but usually at a slower speed.

If the wiper motor is original, it has probably never seen much attention. After almost 80 years there is a good chance gaskets and parts inside have dried and can no longer provide a tight enough seal to operate. It probably needs to be rebuilt.

There is a place herewiperman.com/ that does good work but I can't offer any suggestions for Poland. As far as I know, rebuild kits are only part of the rebuild and not available to buy to do the work yourself. Some have had some luck taking it apart to clean and lubricate but if parts are worn, that would not be a guarantee.

thank you. stripped cleaned rubbed on the table worked but the wiper resistance does not want to. I'll have to buy a new wiper motor but first try to build in electric vacuum pump

If the motor works on the table but not on the car then the motor is probably worn and the seals are leaking. If it is, I do not think buying a new electric vacuum pump will help very much.