Brass fitting stuck...
 

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[Closed] Brass fitting stuck in alloy casting

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Any tips on freeing a brass temperature sender that is stuck in an alloy housing. I can get a socket on the sender but am scared i will break the alloy housing it is screwed into with too much brute force.

thanks


 
Posted : 05/08/2021 3:48 pm
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Posted : 05/08/2021 3:55 pm
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Heat - alloy will expand faster than brass just...

Try and tighten it a touch before you start to try and loosen it...

Impact driver last resort....


 
Posted : 05/08/2021 4:17 pm
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Try ACF50 which is an anti-corrosion spray which should help dissolve the aluminium oxide which is effectively jamming the brass piece in place. Alternatively, a strong alkali solution e.g. caustic soda will do a similar job if you’re not worried about destroying the alloy part.
Before someone mentions Coke it contains citric acid which will just make it sticky


 
Posted : 05/08/2021 4:17 pm
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Penetrating spray, then either heat or cold (ice cubes?). Also a good wire brushing with dremel or similar to remove as much external corrosion as you can. Finally use a six sided socket (not a 12 sided one), as the 12 sided may round off the brass too easily. Also I’d try alternately tightening and loosening (just barely trying to move it initially).


 
Posted : 05/08/2021 4:26 pm
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Thanks all. Soaked with No nonsense penetrating fluid for a day and then applied a little heat came free easily


 
Posted : 08/08/2021 10:28 pm

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