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The mkiv Supra Owners Club

Driveshaft Nightmare


Supe

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Was working on my car for four hours today and finally finished replacing the Driveshaft but the driveshaft nut does not screw on now because I hammered the end of the driveshaft (lightly 3-4 times) to get it out the hub (arse). The nut thread is rounded halfway (the part I attempted to screw on). I have a spare nut lying around but don't want to waste that one.

 

What do you guys reckon? Should I use a file to straighten the thread a little or can I use the end Part of my old Driveshaft (the spline end that goes into the hub, big round part).

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Tidy up the thread on the new driveshaft would be my course of action. Once the driveshaft nut is on it will be past the 'bad' part of the thread (as long as it is just the first couple of threads or so) and will not have any adverse effect.

 

Make sure you tidy the thread enough that the nut will screw on without any extra force otherwise you might end up knackering the thread on the nut with damage to the driveshaft as well. A crossthreaded driveshaft nut is NOT what you want!!

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Something I forgot to add, when whacking out a driveshaft etc leave the nut on just undo it until it is flush with the end of the shaft, it wont damage the thread then when you hit it, and even if it does you can undo the nut over the damaged thread and 'remake it'

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Yeah, you should be able to sort the thread with a file. Getting hold of a few needle files may be your best bet.

 

A copper mallet can be useful for separating shafts, ball joints etc, as it has a soft face that won't ruin the threads.

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hmmm, how much would re-tap and re-die cost me if I was to do it myself. How much are the tools and woluld I be able to fix it on the car instead of taking the whole thing out again.

 

What exactly are the tools called ?

 

Thanks in advance

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I doubt many engineering firms will have a die that size as you would normally cut a thread that size on a lathe, and if its anything like the rest of the car it will be fine pitch too. You would be better off with a die nut rather than a die.

 

Another option is to buy some thread restoring files try http://www.cromwell.co.uk search for METRIC INT/EXT THREAD RESTORER

SHR-017-9020C

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