failed HFC install

Zsteve · 03-18-2010, 09:25 PM

Quote:

Originally Posted by ZKindaGuy

Yea I always use a propane torch to loosen bolts. I first heat the bolt then spray some Liquid Wrench on the exposed services and walk away for a half-hour. As the bolt cools it sucks in the Liquid Wrench in the thread area. When I come back in a half hour the bolt will loosen right out with just minor resistence. Has always worked for me for over 30 years.

I will ask them to try that.

ZKindaGuy · 03-19-2010, 07:15 AM

Quote:

Originally Posted by Zsteve

I will ask them to try that.

Since your bolt is stripped my suggestion might not work as I was speaking to those having stuck bolts that haven't been stripped out.

However a suggestion for stripped bolts...I have at times used a punch and hand-sledge and tapped the stripped bolt inward a bit. Then I tighten up the bolt a bit. This can cause the stripped threads to recut. Then I would perform the "torch and Liquid Wrench" action. Then after the 1/2 hour I could then back out the bolt. This "hammering" trick doesn't always work however. I would say for me the "hammering" trick only worked 50% of the time.

Zsteve · 03-19-2010, 09:28 AM

Quote:

Originally Posted by ZKindaGuy

Since your bolt is stripped my suggestion might not work as I was speaking to those having stuck bolts that haven't been stripped out.

However a suggestion for stripped bolts...I have at times used a punch and hand-sledge and tapped the stripped bolt inward a bit. Then I tighten up the bolt a bit. This can cause the stripped threads to recut. Then I would perform the "torch and Liquid Wrench" action. Then after the 1/2 hour I could then back out the bolt. This "hammering" trick doesn't always work however. I would say for me the "hammering" trick only worked 50% of the time.

Well Im not usre if the threads are stripped or the bolt head is just rounded out. I will have to check that when I get a shop to put it up on a lift to look at it. Im thinking the bolt never even turned for them.

ZKindaGuy · 03-19-2010, 10:07 AM

Quote:

Originally Posted by Zsteve

Well Im not usre if the threads are stripped or the bolt head is just rounded out. I will have to check that when I get a shop to put it up on a lift to look at it. Im thinking the bolt never even turned for them.

Oh OK.. I assumed you meant the threads stripped.

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