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Who Knows How to Get this Off??

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Who Knows How to Get this Off??

Post by Polybus on Thu Mar 26 2015, 08:29

I'm doing my first engine restoration - a J.A.P. Model 2A (its brother the Model 2S is waiting in the wings as my next restoration too)

Trying to get this pulley wheel off - but not sure what the procedure is.

Anyone seen them before??



I gather something goes in through that big hole, and there is a corresponding hole on the inner wheel exactly lined up- I have stuck a screw driver in there but nothing seems to press, nothing seems to unscrew. I have got the big nut off - but need to get this off too to remove the crank. I can;t really see down inside it.

Anyone care to enlighten me?

Thanks heaps for any suggestions.... I'm guessing its pretty simple for someone who knows what they're doing Smile


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Re: Who Knows How to Get this Off??

Post by Ally's_Engines on Thu Mar 26 2015, 19:06

There could be a grub screw in the hole, try putting an allen key in there.

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Re: Who Knows How to Get this Off??

Post by Polybus on Mon Mar 30 2015, 02:58

Hi Ally - I tried putting a long Allen key through there - and lo and behold - once I had cleared all the junk out, the hole goes all the way through - now I can see right through and there doesn't appear to be anything in there that can be undone.

I have taken another photo from a different angle - there are three circular things on the front of the pulley - one in particular looks like it might move - ie: screw out? Push in? or something.

And there is another photo where you can see right through all the aligning holes - but as I said, I can't seem to make anything happen by putting things through there.

So Im still stuck..... Rolling Eyes






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Re: Who Knows How to Get this Off??

Post by Harry Conn on Fri Apr 17 2015, 07:40

Would a bearing puller, pull it off. Sometimes you just need to use force
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Re: Who Knows How to Get this Off??

Post by Harry Conn on Fri Apr 17 2015, 07:41

Would a bearing puller, pull it off. Sometimes you just need to use force
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Re: Who Knows How to Get this Off??

Post by tony old g on Fri Apr 17 2015, 13:48

Hi Harry, I would try a little heat and try and expand the pulley, with nothing going though the hole ,i.e a grub screw or a bolt I think the only thing holding it on is rust. SO best of luck. regards tony

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Re: Who Knows How to Get this Off??

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