Here is a list of all the postings Chris Harris 3 has made in our forums. Click on a thread name to jump to the thread.
Thread: Myford 254 Apron |
30/08/2019 22:23:40 |
The problem was the missing shims. It needed just another 0.010" each side. Thank you so much for the help. I am looking forward to getting this lathe working.
It is nice to know I have this resource for Myford machine tools. Chris Moore used to help me with all my questions but since he has gone I have been stuck from time to time. I do miss the man. Thanks again, Chris |
30/08/2019 13:59:40 |
Posted by Mike Poole on 30/08/2019 09:01:08:
Was the machine in one piece and working ok? If is was dismantled when you got it it may have lost some shims or a packing piece. Mike No, it had missing parts. I had to assemble parts for the compound and so I. I am pretty certain that this is the problem. I never had any shims. I will make some up and get it properly fitted. Any idea how many shims are typically used? |
29/08/2019 23:37:42 |
Posted by Neil Wyatt on 29/08/2019 17:28:30:
I think the likelihood is is that clearance between the hand feed gear and the rack on the lathe bed is insufficient. It's possible that as a prototype this was not perfectly aligned. I don't know if you can adjust clearance easily, or perhaps raise the rack slightly, if not you will need to fit a shim between the apron and saddle. Otherwise, the 254 is unusual in having very small clearances around the apron. I'd suggest using a feeler gauge or similar to check there are clearances in all the necessary places. It also has a saddle that is particularly massive in construction, so I think the apron causing it to distort is unlikely. Loosen the apron just enough that you can move it. If it is possible to move it around when almost locked in place it is unlikely that it is rubbing somewhere, which does then leave the final possibility it is causing the saddle to warp. Neil This is good advice. I will try it out. I think you are on to something with regard to the apron impinging on the rack.
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29/08/2019 15:21:46 |
Posted by David Standing 1 on 28/08/2019 18:44:54:
Where are you located Chris? I live in Fargo, North Dakota USA |
28/08/2019 18:45:16 |
Thanks for the help.
The half nuts are not engaged The saddle lock is not tightened The cross feed is not engaged The saddle gets increasingly more difficult to move as one tightens the two M8 bolts. It is almost if it needs some clearance. I am going to fiddle with it a little more so as to provide you with better description. I do have a parts beakdown for the 254 This particular 254 is a one of a kind. It was the only prototype ever made and Chris Moore gave it to me when the factory closed. So I really want to get it working.
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28/08/2019 16:22:03 |
I am putting a 254 together and have run into a problem with the apron. When I tighten the bolts (M8 I think) that hold the gearbox under the apron to the cross slide, the apron becomes impossible to move. When they are loose the apron moves freely. I can't think what needs to be done to correct this. Any help will be appreciated.
Chris Harris |
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