Hi,

I bought a very nice Feinwerkbau 100 SSP pistol off the forums here last week and have been shooting it quite a lot.

It produced some brilliant groups on paper on the first evening out. So I have no doubt that the pistol was healthy as it was sold to me.

However after several hundred shots it started to behave a little bit oddly. Possibly 500 or so.

I suspected that the main seal was either dirty or OLD.

It was producing low power shots, then dumping the remaining air on opening the cocking lever.

Below is the album with the strip down photos.

http://s699.photobucket.com/albums/v...0Strip%20Down/

As you can see the main firing valve seal is a little past it's sell buy date.

I will write a bit of a guide to how to take these apart over the next few days.

I will say that I am more than impressed with the quality of the engineering in them. My FWB 103 was as new so I have never attempted to take that apart. But this was a genuine case of see what the problem is.

This was the problem.

http://i699.photobucket.com/albums/v...kbau100016.jpg


This is the solution.

http://i699.photobucket.com/albums/v...kbau100020.jpg


It also got a good clean and a light lube with Feinwerkbau Special Grease to those sliding parts.

I'll update with a bit of a guide later.

Thanks

Mark