Gang - This fitting has been in place since '52 and does not want to come out with my 7-16ths wrench. It's at the end of an oil galley and feeds my partial flow filter. I've been dripping Kroil where it goes into the block, but I fear I could twist off half of it if I'm not careful. My 13mm socket is the tightest but it slips over the soft metal edges. Any ideas? Thanks much!
Does a 3/8" drive extension slip over it? Heat the cast iron around it with a torch and use a wrench on the extension.
If that is for a flared line, get a tube nut that fits the threads an put it in the hole before trying to remove it. It will help prevent distortion.
May have some thread sealer on it, some light heat around the fitting would help soften it. One of these sockets would take it out. It works great for things like this. Good luck!
Buy a pipe plug socket , bought this set for something stupid I was working on. Does me well on those lonely nights at sea ! if you do snap the head off a drill bit with grease on it and drive it slowly into the brass will drill it out real easy and the shavings will stick to the grease
Heat the block. Cutting Torch, or Rose Bud. Propane/MAPP torch if you have to. Not your daughters hair drier.
From here, that appears to be a Weatherhead fitting. You mean you don't have the appropriate Weatherhead socket? jack vines
I'd probably try the 3/8 extension or maybe an extractor... You might also use a stud remover (not the cam style, the collet style)
This is a good method...and a couple sharp swats straight in towards the block with about a 16 oz hammer will help as well.
Agree with installing the fitting into it...then try to tighten it slightly before loosening it. it is brass, so don't get too carried away with torch heat if you go that route... and watch out for hot oil burping out of it
It’s a brass fitting, I wouldn’t use heat on it, if it were steel that would be different. Warm the block around it while putting firm pressure on it to undo and it should come free. As said, also screw the line fitting into it, that will stop it from distorting when undoing. IMHO.
Looks like a 90 deg fitting, steel line screws in top left where we can't see? Find a new replacement first, and then you have some more leeway, if you damage this one coming out.
8 point sockets, I have my grandfathers set. They're a must for square headed bolts (and fill plugs).
I would take a flat chuck of steel or flat punch bigger than fitting head and give it a good firm hit a couple of times. Sometimes that will loosen the fitting enough so you can back it out. Then as someone else said try to tighten the fitting just enough to get it to move then rock it back and forth adding lubricant until it comes out. I would not add heat directly to the fitting. Brass anneals and gets softer at relatively low temperatures and a softer fitting will twist off more easily.
A old oil field hand once told me . Heat , forceful persuasion and don’t give up when removing stubborn things . While applying heat put wax where the piece screws in . This will provide lubrication as it will melt into the threads.
As was mentioned just put heat on the block not the fitting. If that is a 90-degree fitting put a plug in to fill the void. Then before you try to unscrew it try to tighten it. Whatever you do don't break it off. If you cannot get it out leave it, just make sure the hole is filled.
@mohr hp It gets 'hot short' - meaning that it's got a tenancy to crumble if you hot work it at the wrong temperature. Dan
Brass anneals also, usually heat to high temp and then quench in water without the quench I believe the brass is somewhat brittle. With all that being said I wouldn’t heat the fitting. If you could get a good grip on the fitting and tap fairly lightly with a hammer it may come loose. Like sated above install a plug to keep from distorting.Does the fitting appear to have a sealant? Some sealants Recto Seal comes to mind set up hard with time. Hopefully not Loctite red, red takes heat to break loose usually. Dan
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