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Thread: AC24L compressor
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3rd Jan 2016, 04:57 PM #1Senior Member
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AC24L compressor
Yesterday I got a GMC air compressor, AC24L and today started to take the outlet valve off. It's a strange thing, there seems to be a locking nut on it where it screws into the socket on the tank, which is quite free but the valve assembly itself won't move. (Think pipe nipple with a locking nut screwed into a socket). The obvious thing is to warm it up with O/A as I'm pretty sure some form of sealant has been applied in the factory. Before I go and warm it has anyone any experience with this?
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3rd Jan 2016, 06:44 PM #2Senior Member
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Yes Clive, they apply a sealant to these and similar size compressors. You might want to confirm the base metal before using the propane torch to warm it. Mine seemed to have all the qualities of die cast aluminium. Good luck.
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3rd Jan 2016, 08:23 PM #3Senior Member
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You're right, it is die cast, when it fell over it had broken apart, I'll apply heat to the socket, i suspect they put a fair amount on and loosely screw it in, hook everything up then tension the locknut to hold it hard againt the threads till it has set.
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3rd Jan 2016, 11:50 PM #4
Mine broke apart too some time ago and I had a hard time getting the diecast glue in crap out too.... Broke of more and more bits of the fittings trying to unsrew it. In the end I drilled out what I could and recut the thread. From memory it was M12, not a pipe thread. Then I had to make an adapter out of brass to get back to 1/4"NPT for the compressed air fittings.....
Cheers, Joe
retired - less energy, more time to contemplate projects and more shed time....
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4th Jan 2016, 12:26 AM #5Senior Member
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Yep, that was my experience. Clive I'd be interested in hearing of your success, and what you used as a (re)sealant. Sounds like you have a plan.
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4th Jan 2016, 09:34 AM #6Senior Member
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All I had intended doing was using thread tape if possible, otherwise I'll get some loctite product.
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4th Jan 2016, 11:19 AM #7
I only used thread tape. Still operational and not leaking.
Cheers, Joe
retired - less energy, more time to contemplate projects and more shed time....
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4th Jan 2016, 03:57 PM #8Senior Member
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Thanks gents. I used thread tape also, but still leaks (some). Better redo - otherwise loctite. Cheers.
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5th Jan 2016, 01:15 AM #9Senior Member
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I prefer thread tape to sealant for the ease of getting it apart if you ever need to.
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