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How to re-thread steering column

Discussion in 'Defender 90 / 110 / 130' started by Glyn D, May 4, 2021.

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  1. Glyn D

    Glyn D Active Member

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    Hi all,

    Whilst removing the steering wheel off my 1996 300tdi, I accidently hammered the 1/2" square hole of a socket onto the steering column's thread. The thread is now screwed.

    [​IMG]

    So, I'm looking for a tool to rethread it but can't find the specs of the thread anywhere. Every parts list I look at says that it's a 14mm nut, but mine has a 22mm nut. Any suggestions?
     
  2. Flossie

    Flossie Well-Known Member

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    Probably be cheaper and safer to fit a SH column, I can't see anyone wanting much for one?
    Try an ad in wanted..?
     
  3. Glyn D

    Glyn D Active Member

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    I've ordered a 14mm die. Fingers crossed...
     
  4. Flossie

    Flossie Well-Known Member

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    Oh, and 14mm probably means M14 thread, the spanner size is irrelevant.
    My nut is 22mm spanner size.
     
  5. v8250

    v8250 Well-Known Member

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    Well you've really f**ked that...!

    The easiest way to clean the thread without removing the column:
    1. clean up the column shaft and thread with wd40 and some 1200grade - get rid of that crud before you start repairing.
    2. once thoroughly clean, take a junior hacksaw blade and "very carefully" feather cut the damage threads by pulling the hacksaw blade [do not try to force forward cut...] following the thread/s.
    3. repeat pt.2 until the thread burrs are removed, then re-die/cut the thread making sure 1. thread is properly greased, and 2. do not force re-thread, go very gently - 1/4 forward, 1/8 back and keep feeling for tight points. You can always ease off, clean out any swarf, re-grease and continue thread cut.
    eta:

    1. 22mm metric nut is a 14mm thread
    2. do not be tempted to use a st/st nut on this - you'll gall whilst torquing up
     
    Last edited: May 4, 2021
    Flossie likes this.
  6. bluedog333

    bluedog333 Well-Known Member

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    Good luck with that, looks pretty buggered!
     
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  7. EeEk

    EeEk Well-Known Member

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    Thread file
     
  8. raywin

    raywin Well-Known Member Full Member

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    14 mm die nut should clean that up, be sure you get the right pitch.
    Put some grease on and then work the die down slowly half a turn then back until you get it to the end. Looking at the picture worst bit will be starting it take your time.
     
  9. Glyn D

    Glyn D Active Member

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    Thanks guys. Hadn't thought to use a hacksaw on it.
     
  10. DanClarke

    DanClarke Well-Known Member Full Member

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    Only "partially buggred" not "Fully buggred". Should clean up with a file a hacksaw and some patience.
    If you can get the worst damage off a re-thread with the appropriate die and some cutting oil/grease will work wonders.
     
  11. Colthebrummie

    Colthebrummie Well-Known Member

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    Even the dog is looking away in disgust.

    Col
     
  12. flat

    flat Well-Known Member

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    How the hell do you ‘accidentally’ hammer a socket onto it :eek:
     
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  13. Flossie

    Flossie Well-Known Member

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    Mullered nut and a shallow socket combined with a lump hammer I guess.
    @Glyn D are the bushes/bearings still good in the shaft? Lot of rust there and the (cough) accidental hammering might have damaged them?.
    If you can't save it you could drill and washer/split pin it but I would be looking for another SH column long term.
     
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  14. v8250

    v8250 Well-Known Member

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    Remember, you're feather filing the thread using hacksaw blade by pulling the reverse blade through the thread, not forward cutting. And go gently...it's far better to take twice as long and complete the task properly rather than attack the job and **** it up [again...] ;)
     
  15. mick the builder

    mick the builder Well-Known Member

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    If all else fails, clamp two sets of mole grips on at 9 and 3 o'clock. :D
     
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  16. meego

    meego Well-Known Member

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    I 2nd that. I used to have one but leant it out never to be seen again :mad:
     
  17. meego

    meego Well-Known Member

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  18. potus

    potus Well-Known Member

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    Thread file and/or the correct die is the only way to try to restore that mess IMO.
     
    raywin likes this.
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