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Myford ML10

Mills pin removal

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William Grayling08/05/2020 18:29:36
3 forum posts

I need to replace the right hand oilite bush on the lead screw of my ML10 as it was damaged by the previous owner. However, the Mills pin must be removed first but this has been punched in flush with the casting. Can someone advise me the best way to remove the pin?

Bill

DiogenesII09/05/2020 07:52:44
169 forum posts
72 photos

..a tapered pin fitted into a blind hole? ..surely the little end must have access for removal, a bush is a service item..

Hopefully a '10 owner will have an answer, if not a photo or even sketch of the parts would be useful, as it's hard for those not familiar with the machine to envisage how the assembly might be arranged..

Clive Hartland09/05/2020 08:08:45
avatar
2630 forum posts
40 photos

Item. 3 on the drawing, detailed as a Mills pin.type GPS. 3/16" dia. x 1"

I will have a look later and come back,

Redsetter09/05/2020 09:04:58
140 forum posts

I think you will find that the drilling for the pin passes through the bearing housing, and then through the front face of the bed, so that in theory at least, the pin can be punched right through.

My ML10 is certainly like this, but please check yours before trying it.

not done it yet09/05/2020 09:57:49
5372 forum posts
20 photos
Posted by DiogenesII on 09/05/2020 07:52:44:

..a tapered pin fitted into a blind hole? ..surely the little end must have access for removal, a bush is a service item..

Hopefully a '10 owner will have an answer, if not a photo or even sketch of the parts would be useful, as it's hard for those not familiar with the machine to envisage how the assembly might be arranged..

They are not tapered, surely? Fluted from parallel I would guess. A cheaper production method than precision dowels, I expect.

Not a myford but any positional dowels on my machine can be removed either by tapping out, or through, the hole.

William Grayling09/05/2020 11:27:19
3 forum posts

I am new to ‘Forums’ and am amazed at the kind people who are willing to help me with my problem, so thank you all!

Firstly, the Mills pin is straight sided so should be able to be punched through or at least into the shaft hole. I am reluctant to lift the bed to find out if there is a hole through but it makes good sense to have one. However, the oilite bush is not drilled through so I would need to remove it first. When the bush is out I will be able to see if there is a hole in the other side of the casting. However, removing the bush with the pin still in place will be difficult, I have tried it with a homemade puller without success and the use of a drift with a large hammer fills me with horror in case I damage the casting!

Redsetter09/05/2020 11:50:00
140 forum posts

William, if you poke a finger through the rectangular hole at the tailstock end of the bed, you should be able to feel the inner end of the pin hole.

If it is the original pin in the original hole it goes under the bush, not through the centre.

Edited By Redsetter on 09/05/2020 11:50:52

DiogenesII09/05/2020 12:20:49
169 forum posts
72 photos
Posted by not done it yet on 09/05/2020 09:57:49:
Posted by DiogenesII on 09/05/2020 07:52:44:

..a tapered pin fitted into a blind hole? ..surely the little end must have access for removal, a bush is a service item..

Hopefully a '10 owner will have an answer, if not a photo or even sketch of the parts would be useful, as it's hard for those not familiar with the machine to envisage how the assembly might be arranged..

They are not tapered, surely? Fluted from parallel I would guess. A cheaper production method than precision dowels, I expect.

Not a myford but any positional dowels on my machine can be removed either by tapping out, or through, the hole.

Quite so, NDIY. Apologies...

not done it yet09/05/2020 12:40:21
5372 forum posts
20 photos

No apols needed. You will have a PM shortly.

William Grayling09/05/2020 18:07:45
3 forum posts

Thanks to the excellent advice I have received, the job was done in a few minutes and the lathe is now ready to be put back together again!

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