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Old 08-10-2018, 04:52 PM   #1
Mad Mac
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Default Horn tube stuck in shaft

When reconditioning my 7 tooth column, I was very pleased to find a steering shaft in very good condition, until I noticed that the inside of the shaft was totally blocked with rusted horn/lighting tube. Easy, I thought - just blow it out with compressed air. No! that didn't work, so I tried to drill it out with a drill bit welded to a long rod. That didn't work either and I was very lucky to retrieve the rod after it got totally stuck twice. Anyone got any ideas? Its too good a shaft to give up on.
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Old 08-11-2018, 12:22 AM   #2
john charlton
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Default Re: Horn tube stuck in shaft

If you have a rough idea where the obstruction is heat the area with a propane torch then quench with very cold water and repeat . This could free it off worth a try . Not cherry red but black smokey .

John in sunny cool morning Suffolk County England.
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Old 08-11-2018, 09:17 AM   #3
rocket1
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Default Re: Horn tube stuck in shaft

I would stand the shaft upright and fill with penetrant,possibly acetone and auto tranny fluid,let it sit for sometime and it might loosen the rust so it can be pushed out.
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Old 08-11-2018, 04:26 PM   #4
Mad Mac
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Default Re: Horn tube stuck in shaft

Quote:
Originally Posted by john charlton View Post
If you have a rough idea where the obstruction is heat the area with a propane torch then quench with very cold water and repeat . This could free it off worth a try . Not cherry red but black smokey.
Thanks John,
So it won't harm the shaft to apply heat locally?

And a related question: The shaft is scored and worn at the upper bushing, so will it harm the shaft to build it up with weld at that point, then turn it down back to correct diameter on a lathe?
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Old 08-11-2018, 06:04 PM   #5
gustafson
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Default Re: Horn tube stuck in shaft

that is thinwall and will be very tricky
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Old 08-12-2018, 04:32 AM   #6
john charlton
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Default Re: Horn tube stuck in shaft

You wont harm the shaft but spread the heat uniformly around the shaft .If you can guess how long a piece is stuck,poke a rod in from each end to guage , heat that area.The shaft is about 1/4" thick or maybe slightly less so a MIG/TIG repair should work.

John
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Old 08-12-2018, 11:56 AM   #7
gustafson
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Default Re: Horn tube stuck in shaft

waay less than 1/4"
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Old 08-12-2018, 03:32 PM   #8
john charlton
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Default Re: Horn tube stuck in shaft

The poster has the shaft in his hand so can see just how thick it is , he can take it to a skilled welder and get good advice.Just checked out a 7 tooth shaft and looks to be around 1/8" .My mistake I checked a 2 tooth. I think it can be repaired nonetheless.

John
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