Thiel 158 problem

[steamdaveParticipant @steamdave]

Does any reader have a good working knowledge of the Thiel 158 milling machine – or know anyone who does?

I have lost power feed to the Y axis. There must be a shear pin somewhere that has failed, but where?! I know about the main one on the left hand side of the column and that one is intact.

Hopefully someone will be able to help.

Dave

The Emerald Isle

[steamdaveParticipant @steamdave]

Y axis power feed failure

[SpringbokParticipant @springbok]

Hi

Try this site

http://www.lathes.co.uk/thiel/

BUT they do not have a manual for the 158 but it may be a starting point for you

good luck

 

Bob

[steamdaveParticipant @steamdave]

Hi Bob

Thanks for your suggestion. I do have a manual, but it must be based on a later type of machine than mine because there are several differences in it and crucially no shear pin is shown.

Dave

The Emerald Isle

[steamdaveParticipant @steamdave]

Hi Rob

Thanks for your input. I will check on the detent next time I can get to my workshop – I’m away at work now. The Y axis did overrun the normal travel limit, but I don’t remember any problem afterwards with the feed selector not being able to engage. I engaged the selector but there just wasn’t any feed. That is why I wondered about the hidden shear pin.

Dave

The Emerald Isle

[steamdaveParticipant @steamdave]

Hi Rob

Managed to have a look at the milling machine. When I select Y axis power feed, the detent rises and when it is deselected, the detent drops. I have tried to remove the selector lever but looks like I need a puller to get it off – possibly a burr on the shaft, then I can have a look inside the detent mechanism.

Dave

The Emerald Isle

[steamdaveParticipant @steamdave]

Hi Rob

Many thanks indeed for that useful bit of information. Looks like a partial strip down is required!

Dave

The Emerald Isle

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