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keyway, what type? Removal
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buzzy bee



Joined: 23 Nov 2007
Posts: 3382
Location: South Cheshire

PostPosted: Mon Jan 11, 2010 9:43 pm    Post subject: keyway, what type? Removal Reply with quote

Slight blond moment, but I have a gear with a knock in key, that holds the gear on, what is the proper name for this key?

Last edited by buzzy bee on Mon Jan 11, 2010 9:55 pm; edited 1 time in total
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Phil - Nottingham



Joined: 01 Jan 2008
Posts: 1252
Location: Nottingham

PostPosted: Mon Jan 11, 2010 9:45 pm    Post subject: Reply with quote

Woodruff key if you mean the 1/2 moon type which is just a bit off the top of a circular steel disk
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buzzy bee



Joined: 23 Nov 2007
Posts: 3382
Location: South Cheshire

PostPosted: Mon Jan 11, 2010 9:53 pm    Post subject: Reply with quote

Hi

Just came to me the word was tapered this led onto gib!

So how do you remove a very tight gib key, that has no head, for a gib puller?

Cheers

Dave
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Phil - Nottingham



Joined: 01 Jan 2008
Posts: 1252
Location: Nottingham

PostPosted: Mon Jan 11, 2010 10:01 pm    Post subject: Reply with quote

http://www.stationaryengineparts.com/Lister-CS-Gib-key-pullers/
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buzzy bee



Joined: 23 Nov 2007
Posts: 3382
Location: South Cheshire

PostPosted: Mon Jan 11, 2010 10:21 pm    Post subject: Reply with quote

Hi

I have seen these used on engines, but you have to have a head for it to slot behind, mine doesn't seem to have any head left, or it has been hit that far in it has gone.

Either way a gib key puller won't work.

I am tempted to get a big puller and just give it a pull, but I think it will break the sproket as it will just get tighter!

I need this sproket off to source/replace the bearing that has completeley collapsed, snapping the chain in the process, and the chain is really quite large, must have gone with a wollap! hehe

Cheers

Dave
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victor 101



Joined: 03 Apr 2009
Posts: 446
Location: East Yorkshire

PostPosted: Mon Jan 11, 2010 11:07 pm    Post subject: Reply with quote

Any chance of putting a bit of weld on it to give the puller something to hang on.
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buzzy bee



Joined: 23 Nov 2007
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Location: South Cheshire

PostPosted: Tue Jan 12, 2010 12:21 am    Post subject: Reply with quote

Hi

I might have to do that, a few blobs on the top corner, it is very short indeed, but might be enough.

Cheers

Dave
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dclf1947



Joined: 23 Nov 2007
Posts: 107
Location: Laoag City, Philippines

PostPosted: Tue Jan 12, 2010 12:15 pm    Post subject: Reply with quote

If the gear is not against a shoulder you can try driving the gear forward a little to release the key.

Dave
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buzzy bee



Joined: 23 Nov 2007
Posts: 3382
Location: South Cheshire

PostPosted: Tue Jan 12, 2010 7:20 pm    Post subject: Reply with quote

Hi

Well I have done it.

I drove the sprocket forward as far as I could with a copper hammer, it went a little, 3 or 4 mm, but it didn't release the key. So I got the big pullers out, and pulled the sprocket off, with the key still in there, it came out ok in the end.

Cheers for all the replies!

Dave
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