Russian hammer

[Valentin]

ok found a pic with it after it has been repaierd. The 2litter plastic bottle is just a cap of the rezervoare ..don't mind it

[Valentin]

yeap there is oil u have to pump until the glas get's ful... mine are also broken and i repleced them with some trasparnt plastic hose

[Hofi]

A Hammer Like That One Was Bought By Jossef Mikke My Freind In Prgue One Year Ago.
But The 80 Kg 176# Size For Less Then 2000$.
A Very Very Good Hammer!!!
Hofi

[Minotaur]

Yesterday I went to work with the hammer again. The ram is now moving. So are two out of three valves. The owner told me that he had freed the valves, but I noticed that actually the pins that connect the lever to the valve axle (the top one) were broken and the valve itself wasn't moving. Next time I'll take a threading tap with me and remove the broken pices, so that shouldn't be a problem.

I removed the covers from both sides and tried to drift the valve out (as JohnN suggested). I noticed that the whole valve assembly (valve+sleeve) was moving. Should I drift out the whole thing? Any ideas if the sleeve is in one or two pieces? If it is in two pieces could I run into troubles when the other part gets into the chamber in the middle?

[kalevra]

Hello Minotaur,
I read Russian, so if you need any further assistance with the language, etc. feel free to contact me. As luck would have it, I have a Beche hammer and you are right, the hammers are very similar. I will be installing mine in the coming weeks, and it would be fun to compare notes. How did your hammer make it here?
cheers,
kalevra

[John N]

sounds like those valves are properly seized!!!

you do not, under any circustances want to loose the relative position of the valve sleeve (tube). knock it back in and stamp the end of the sleeve with a corresponding point on the frame casting.

you then have 2 main options.......

drift the whole lot out and soak it in parrafin or similar, then unseize it, then reassemble using your marks for alignment,

or I would get 4 really heavy washers and use the tapped holes for the valve cover, with the washers to prevent the tube walking out. then drift the valve out as previous.

edit.

I would guess the valve sleeve is 1 piece.

[Minotaur]

Originally Posted by John N

or I would get 4 really heavy washers and use the tapped holes for the valve cover, with the washers to prevent the tube walking out. then drift the valve out as previous.

Never thought of that. I guess I'll give it a try next Saturday.

[Minotaur]

It's working now! After a long break I finally went to see the hammer again yesterday. It was somewhat warmer than previous time and also the oil probably had done its magic as well as the valve came off almost easily. I cleaned and oiled it and put it back. It rotated freely, but after I put covers back it feeled jammed again. New slightly thicker cover seals would probably help. I untightened the bolts just a bit so that it was moving again (although quite stifly).

Then it was time to test the hammer. There is no room to operate the foot pedal so I operated the rod moving the valves by hand and the owner handled the iron. There seems to be a plenty of power in it. A 12 mm (1/2") round bar was flattened with few hits.

It is leaking quite a bit of oil. Could it be because there is too much oil in the ram cylinder or does it mean that the piston rings are worn out. There was a little bit of air coming from the sides of the ram when it was down and some more when the ram was in up position.

There was no oli running through the glass pipe, so there is something wrong with oiling system, although it probably has been working earlier.

I was suprised how gently the ram is lifted/lowered at the beginning/end:
Video

[Minotaur]

Originally Posted by kalevra

Hello Minotaur,
I read Russian, so if you need any further assistance with the language, etc. feel free to contact me. As luck would have it, I have a Beche hammer and you are right, the hammers are very similar. I will be installing mine in the coming weeks, and it would be fun to compare notes. How did your hammer make it here?

Sorry Kalevra, I somehow missed your message earlier. Have you installed your hammer already?

The hammer I'm thinking to buy was imported from Estonia to Finland.

[Valentin]

Hmm... Oil coming down from the piston is ok ... mine is always leaking... No oil in the glass pipe ...is not good you have to make sure that oil is going to the pistons... If the piston rings are worn out ...the hammer head is not retracting up after you hit (from the foot pedal) ...the ram is suposed to move fast ..up and down