tight bolt
just picked up a 1920's Husqvarna. The bolt in front of the magazine well is so tight its unreal. Have the right screwdrivers and everything. Right now its sitting upside down, and every hour or so I put a couple drops of oil on it. This has been going on for over a day and a half. Any suggestions?
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Oil applied to the screw head will never get to the threads.
Mount the gun solidly in a carpenter's vise and use an impact screwdriver.0 -
Tap the head of the screw lightly with a flat punch and a light hammer a few times. That will sometimes loosen it a little bit.
Then as v35 says - use an air impact wrench to finish the job. I turn the air pressure down to about 30 psi. and the speed of impacts down to about 3 strokes per second. This may take what seems like a long time, but you won't goof up the screw slot and wont twist off the screw.0 -
thanks I have an air compressor the taps on the head didnt get me anywhere tried that before i tried to give it an oil bath. I have a 3/8 drive air ratchet,going to see if I can find screwdriver sockets for it. let you know if it works 0 -
take a tip from a set of bits for screws. heat it up cherry red. apply it to the screw. the transfer of heat should make it loosen up. 0 -
andy,
You say 1920's Husky, - prolly a Mauser action. Check with www.brownells.com for #319-414-098.
Might just drill the head off, use a vise-grip on the screw shank, & re-assemble the gun with a new set of screws.
Sometimes a guy gots-to give up trying to save a $5 screw with $50 worth of time & trouble.
Jim0 -
Do not use an air impact wrench, use a hammer driven one. Sears sells one, as do a few other places. One that takes standard bits would do well, or get extra bits and grind one to fit. Few hits with a 2lb hammer should do it, drives about 4 or 5 degrees per hit, and being driven forward will usually keep bit in the slot.
Also, and air ratchet is not near the torque of an impact wrench-about 30-50 lbs ratche pressure, vs well in excess of 200 for the impact wrench.0 -
anderson1773:
You have 4 good answers to your question. Only 4.
cussedemgun
260
v35
I.Shute
You know when you set up your 3/8 drive impact wrench at 30 psi and air delivery at 3 impacts per second that you have a VERY light force on the screw,- you can stop it with your fingers. You can adjust it down to nothing or up to shear off the screw if you want to. Air impact wrenches aren't automatically designed to deliver 200 pounds of anything at near zero pressure and near zero cubic feet of air per minute.
Refresh: - Add RCrosby to that list of good answers.
Sometimes a little heat will help even if Loctite wasn't used, such as 260 says. It worked for me recently on a Merwin Hulbert.0 -
If someone had used Loc-tite then a soldering iron held to the screw head for a minute might loosen it up. 0 -
picked up a hammer driven impact from napa 3 taps of the hammer and the bolt came loose, had a real thick nasty grease that had lost all it's greasieness and seized up. cleaned up averything with gunscrubber and its good as gold now. Thanks for all the input. going to look into a whole new bolt set for it now. Thanks 0 -
Left-handed threads can appear where you least expect them, like on some S&W extractor rods, and some Chrysler wheel lugs.
Just so that no stone is unturned, here....0
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