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Gallery, Projects and General => How do I?? => Topic started by: Pete W. on August 18, 2012, 11:28:03 AM

Title: M & W Automatic Centre Punch - Repair?
Post by: Pete W. on August 18, 2012, 11:28:03 AM

Hi there, all,

I have a poorly Moore & Wright automatic centre punch, if I adjust the punch pressure from minimum to maximum it auto-punches OK the first time and then goes all passive.

I've partially dismantled it but haven't found anything obviously wrong.   :bang: 

Before I go for broke and take it completely to pieces, PLEASE is there anyone out there who is familiar with the internals of the beast and can give me any pointers?

A photo or exploded diagram would be nice.

Best regards,

Pete W.

Title: Re: M & W Automatic Centre Punch - Repair?
Post by: krv3000 on August 18, 2012, 06:11:28 PM

hi well i have one of them and it did the same thing as your has dun when i gave it a bit oil i striped it all out gave it a bathe in sum pant thiners then i put it back together with sum white grees worked well ever since

Title: Re: M & W Automatic Centre Punch - Repair?
Post by: Mayhem on August 20, 2012, 05:51:48 AM

Hope this helps.  I know the little baseball bat part has to be the right way around otherwise it won't work. 

Sometimes mine does what you describe and if I give it a light tap against the bench it is fine.  Mine probably needs a lube but you know how it goes...

Title: Re: M & W Automatic Centre Punch - Repair?
Post by: holmes_ca on October 11, 2013, 01:45:15 AM

Quote from: Pete W. on August 18, 2012, 11:28:03 AM

Hi there, all,

I have a poorly Moore & Wright automatic centre punch, if I adjust the punch pressure from minimum to maximum it auto-punches OK the first time and then goes all passive.

I've partially dismantled it but haven't found anything obviously wrong.   :bang: 

Before I go for broke and take it completely to pieces, PLEASE is there anyone out there who is familiar with the internals of the beast and can give me any pointers?

A photo or exploded diagram would be nice.

Best regards,

Pete W.

Pete, I have the heavy duty M&W the one with the large ball on the top handle, I can take a photo tomorrow and forward showing the internal parts and how they are arranged in stages, I must say mine works perfectly, I use it all the time,

Let me know if interested,

......Edmund......Alberta......Canada

Title: Re: M & W Automatic Centre Punch - Repair?
Post by: awemawson on October 11, 2013, 03:48:40 AM

Pete, mine went all limp on me as well a few years ago  :(

Nothing at all looked wrong with it, but as I had spare points for it I changed it out and it cured the fault. There must be some rounding on the back groove of the point, but for the life of me I couldn't see what. Certainly when I put the old one back the symptoms returned.

Title: Re: M & W Automatic Centre Punch - Repair?
Post by: Pete W. on October 12, 2013, 04:22:51 PM

Hi there, Edmund and Andrew,

Thank you for your posts.

Edmund:  I'd be very grateful to see some photos of your centre punch in its dis-assembled state but I hope that it'll still be working once you've re-assembled it!  I'd hate to have it on my conscience if it didn't survive the experience!! 

Andrew:  I'll take mine to pieces again and examine the back end of the point.

I bought this centre punch as a back-up but my main one seems to have gone into hiding!   :bang:   :bang:   :bang: