Lower control arm issue - Impala Tech
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post #1 of 6 (permalink) Old 04-19-2015, 10:12 PM Thread Starter
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Lower control arm issue

Hi everyone. Currently finishing teardown of my 67s rear axle but the lower control arm bolt is frozen completely so I can't get it out even with two cans of penetrating oil. Tried coaxing it, heating it up, cussing it out, threatening it and nothing. Anyone have a thought on how to free this up without resorting to sawsall it off.

Thanks

Frame up restoration of 1967 Impala in progress
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post #2 of 6 (permalink) Old 04-20-2015, 06:12 AM
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Cut both ends off, Remove it and work on it on the bench. Most you could do is ruin it. Replacement arm is not expensive. And not worth the aggravation.
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post #3 of 6 (permalink) Old 04-20-2015, 09:34 AM
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When you heated the nut and bolt up to cherry red did you quickly cool down the bolt by squirting it with water? It is the sudden contraction of the bolt from the inside of the still red hot nut that frees it up when using heat.

You have to throw away the bolt and nut when you use heat to remove them as you have destroyed any heat treatment of the fastener by heating it up again. So if that doesn't work it is time for the Sawsall and a hacksaw blade.

Big Dave
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post #4 of 6 (permalink) Old 04-22-2015, 06:57 PM
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Quote:
Originally Posted by dadstoy View Post
Cut both ends off, Remove it and work on it on the bench. Most you could do is ruin it. Replacement arm is not expensive. And not worth the aggravation.
What he said. The bolt seizes to the inner sleeve in the bushing and even if you did get the bolt to turn, it would most likely be the bushing turning with it. Once you cut both ends flush, you can pry the arm out and get it on the bench. I would just replace the whole bushing at that point, which is most likely needed anyway.

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post #5 of 6 (permalink) Old 04-22-2015, 08:57 PM
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Quote:
Originally Posted by RO_Impala67 View Post
cussing it out, threatening it and nothing.
Thanks
This!

I cuss everything out but it never works
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post #6 of 6 (permalink) Old 04-22-2015, 10:00 PM Thread Starter
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Well I did the cherry red to insta freeze technique, got the bolt to come free but the inner metal fused to the bolt so it resulted in sawzall action. Rather annoying but once I get this one broke off bolt, its off to media blast city.
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