Removing stuck bolt

Discussion in 'Workshop Projects' started by KennyO, Nov 8, 2018.

  1. :-]

    :-] Member

    Heating it & allowing it to cool too quick will have case hardened it making it difficult to drill or cut with a hacksaw etc. May need to soften it before you are able to cut it or drill it.
     
  2. KennyO

    KennyO Member

    Location:
    Angus
    I did wonder that. Heat and then slow cool to soften?
     
  3. :-]

    :-] Member

    Yes, also looking at the picture I think the bolt is stuck because it has worn a lip into it where it pivots rather than seized with corrosion.
     
    Last edited: Nov 9, 2018
    Shavings man likes this.
  4. AJR75

    AJR75 Member

    Location:
    Somerset
    I'd guess that if the bolt wasn't properly tightened it's also been bent slightly as well which won't help matters. Personally I'd probably sacrifice a part of the top and bottom bracket which will allow you access to the bolt directly where it goes through the plough beam and also let you heat the area surrounding the bolt more effectively. Depending on how badly worn the hole is in the bracket, butt weld the plate back onto the bracket or if you're feeling really flash get another couple of pieces laser profiled to match what you've cut off?

    If still tight after heating, I have in the past welded a couple of pieces of round bar into a T section effectively forming a handle and punch- get someone else to hold the handle (make it long enough so they're well away from the sledge) leaving you free to swing the sledge as hard as you dare. It's surprising what you'll shift doing this!
     
  5. :-]

    :-] Member

    I am thinking it is more of an alignment problem than a seized bolt, as the plough pivots on this bolt it has worn the centre part forming a lip which allows the centre (beam) to twist slightly from the top & bottom brackets. In which case heat will not help & it can only be driven out if it is aligned up.
     
  6. bravheart

    bravheart Member

    Location:
    scottish borders
    Hi Kenny, been there got that T-Shirt but different colour plough. Turned out the plough frame had a sleeve welded through it and the bolt was waisted and siezed in the sleeve and would never have come out through vari bracket hole.
    Managed to jack the plough up to get enough room to cut the bolt and washer through with a hacksaw(blade only), turned plough over and did same again, slip bracket off and welt the bolt as hard as possible, was a two man job with a made up punch c/w handle, ended up cracking sleeve welds and knocking whole lot through.
    I could see no easy way but a mag drill with a rotabroach face type milling drill thing would be my go to the next time.
    Remember safety goggles etc. if hitting a punch!

    Good luck.
     
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  7. towbar

    towbar Member

    Location:
    Louth, Ireland
    Exact same issue here cut the bolt with very fine disc under the bracket each side still couldn't get bolt out so gave up and welded the bracket each side. Will have to revisit some day but it's 5 years now.
     
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  8. quattro

    quattro Member

    Location:
    scotland
    Cut a hole with mag drill in side of beam to get gas torch in to heat the bush and then smack it out then weld peice you drilled out back in
    And apply lots of grease when refitting bolt
     
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  9. KennyO

    KennyO Member

    Location:
    Angus
    20181109_075714.jpg
    Limited success so far today. Got bracket out of way but still cant shift bolt.

    Got local engineer coming to look at it. Think i will have to get them to cut out bush.
     
  10. towbar

    towbar Member

    Location:
    Louth, Ireland
    do you expect to adjust it frequently? Line it up a 1 inch weld on each side - easy to cut again if needed and less expense as otherwise your also going to have to sort out the bracket now too.
     
  11. Jetemp

    Jetemp Member

    Location:
    North Yorkshire
    how long is the part of the bolt that's left in the plough? how steady/how much can you melt away with a gas torch?
     
  12. Renaultman

    Renaultman Member

    Location:
    Darlington
    They're a nightmare, easing oil, a good drift and a big hammer, I eoiwo be tempted to keep giving it a sqhrt for 3 or 4 days before trying again. Might also be tempted to knock It back the other way. Ours is just welded solid now, got sick of the bloody things snapping.
     
    towbar likes this.
  13. towbar

    towbar Member

    Location:
    Louth, Ireland
    We tried soaking for a week with WD40 plough turned each way - made a drift with a long arm and tried standing on top of plough and really going at it with sledge to no avail. We did move it but reckon there was a bend in the bolt even driving it one way and cutting a bit off then driving the other way wouldn't work. I think you do more harm to frame cutting and rewelding bush.
    It doesn't take much weld to hold it in place and you can do it where it is easy to cut if needed.
     
    Renaultman likes this.
  14. Mursal

    Mursal Member

    If you make a gig to locate the new bolt / bush, using a large enough drill can you drill out the bush with a mg drill? Hire shop will have them. Old weld will drill, slow and steady with coolant. You only have to drill the depth of the beam from both ends, that's if you have the room? New bush and bolt, run of weld, sorted. Well not as easy as that, but you get the idea.
     
  15. KennyO

    KennyO Member

    Location:
    Angus
    Pretty sure its a full depth bush
     
  16. Mursal

    Mursal Member

    Yes but its only connected to the box section at the top and bottom, I think
     
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  17. bobk

    bobk Member

    Location:
    stafford
    Presumably you can cut bush top and bottom , then put bigger bush and pin in ?
     
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  18. KennyO

    KennyO Member

    Location:
    Angus
    Was sitting looking at it tonight thinking i might just weld the bugger up. As noted the holes in the brackets are buggered and was planning on repairing them. @towbar @Renaultman i'm glad you have done it successfully.

    Front big bolts have a bit of play too so probably best option. Would have been left at 16" anyway.
     
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  19. Bob lincs

    Bob lincs Member

    Location:
    On the flat bit
    I had the same problem on an old Besson plough , with the gas I carefully cut a 2” square hole in the beam so I could heat the bush all the way though . Once it was well hot it came out with a few good whacks with a big hammer . Welded a good plate over the hole job done .
     
  20. towbar

    towbar Member

    Location:
    Louth, Ireland
    Bear in mind the bolt is not seized with rust it did move initially about 25mm. In my view the bolt is bent at each end in the bush and will not push through. I don’t think heat will help.
     
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