Rear wheel bolt 'threaded'

Discussion in 'Fiat' started by joggerman, May 6, 2010.

  1. joggerman

    joggerman Read Only Funster

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    I was checking that my wheel bolts were tight before returning home from a short break, and found that one of the rear bolts just kept turning. It seems that that the thread in the hub has stripped.

    This is the first time I have checked this as I only got the MH in January. I only used the hand wrench so it is not something I have caused.

    Am I looking at a new hub (as one repairer has said at a cost of £300 +, if the bearing needs replacing), or is there some other way to re-thread the hub?

    I will obviously be contacting the dealer I bought from for a solution.
     
  2. vwalan

    vwalan Funster

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    a good machine shop can make an insert with the thread you require . will require drilling and tapping .easy job.
     
  3. VMax666

    VMax666 Read Only Funster

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    TimeSert or Helicoil would be the cheapest if you can find a garage with a kit in stock. Probably depend on size and thread, but there are people who specialise in them. VMax
     
  4. joggerman

    joggerman Read Only Funster

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    1. Would this be done without removing the hub, and possible damage to bearing?
    2. Do these reqiure drilling out of the hub?

    This is a new technical area for me, so my knowledge is very limited.
     
  5. vwalan

    vwalan Funster

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    i never go on a big trip without time sert from wurth . every thing depends on the thread size /pitch. possibly be done in situe. time sert would be better than helicoil. speak to a local machine shop there must be one near you. if you were in cornwall if i couldnt fix it there is a m,shop at the end of the road .either in place or take the hub off . you probably have 4 other bolts i wouldnt worry too much.
     
  6. VMax666

    VMax666 Read Only Funster

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  7. hilldweller

    hilldweller Funster Life Member

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    Helicoil was my first thought too. What it is a hard steel spring, a coil. So you drill out the original damaged thread a size bigger, tap it and then insert this spring which brings it back to original size.

    You need to strip down enough so the swarf can be clears, that's all. Hard part is finding a good place to do it.
     
  8. wireman

    wireman Read Only Funster

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    are you sure its not just a security nut that needs a special tool to undo it.....?
     
  9. vwalan

    vwalan Funster

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    problem i see is helicoils have a habit of coming out if the bolt is done very tight .time sert use a mecanical grip system and are rare to pull out at a later date.
    i have a metric set for bolts and various spark plug sizes .
    also helicoils shame op isnt local .
    time sert are the ultimate thread insert .
     
  10. rainbow chasers

    rainbow chasers Read Only Funster

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    Can you not source a replacement stud?

    That way, just tap it out with a hammer through the hub, and then tap a new one back through - fairly easy!
     
  11. hilldweller

    hilldweller Funster Life Member

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    We live and learn. New one on me and does look good. I hope I never need one.
     
  12. VMax666

    VMax666 Read Only Funster

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    Brian, buy an old Brit bike and you won't need one. Dozens maybe!:Rofl1: Vmax
     
  13. vwalan

    vwalan Funster

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    brian i have used both ,even fitted in situe with spark plugs . very common on aluminium heads like m,cycles and vw beetles .if you are very unlucky a bit of swarf may stick to a valve seat but very rare. used timeserts to hold a scania gearbox to engine when threads stripped on engine while doing a clutch. most threads on a porsche have them as standard. the big kits are expensive but woth it in the garage saved hours of time and so easy to use.
     
  14. pappajohn

    pappajohn Funster Life Member

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    my first thought also :thumb:

    unusual for the hub thread to strip as it should take considerably more torque than the recommended tightening torque without stripping.
     
  15. hilldweller

    hilldweller Funster Life Member

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    Do I look that stupid ?

    No way, I lived through Brit cars and Brit bikes. Yes I look longingly at the old stuff sometimes but then, luckily, the grey cells waken up with "have you forgotten the pain when they were new ?"
     
  16. VMax666

    VMax666 Read Only Funster

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  17. vwalan

    vwalan Funster

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    hi brian, or anybody who plays with cars m,cycles ,google wurt time serts there is a u tube video of time serts being used . you may find the use of a set. normally bought from wurth direct .they have big shops abroad. wurth make/sell lots of things you cant always find.
    good quality tools as well. cheers alan.
     
  18. joggerman

    joggerman Read Only Funster

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    I agree. Someone must have used a very long lever at some time to strip the thread.
    Still, it has happened so I need a solution.
     
  19. Wildman

    Wildman Read Only Funster

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    the studs are normally pushed through the hub and held by splines not screwed in. Just press it out and replace with a new one, if the splines are stripped the only option may be to either bodge it by welding it in or replacing the hub. no reason for the bearings to get damaged at all and even if they were are not expencive.
     
  20. joggerman

    joggerman Read Only Funster

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    It does not have studs.
    It has bolts which pass through the wheel and screw into the threads in the hub.

    I have had two separate quotes, both about £70 + vat for bearing, £140 + vat for new hub, £120 + vat labour.
    Sounds expensive to me, thats why I am considering the helicoil which some have suggested.
     
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