screw removal

[rchall]

Needing information on how to remove some magazine plug screws
on the tube of a Winchester Model 12 pump. I think they are probably
rusted or corroded on the threads and have been impossible to get
out. Even bent one of my Forster screwdrivers working on one. Need
to know the quickest and best way to remove them Thanks!!

[Grayfox]

With the screwdriver in the screw slot, apply moderate turning pressure and tap the end of the screwdriver with a light hammer. Just keep at it until the vibrations loosen the screw.

[s&wchad]

Let penetrating oil work for few days (Kroil is good). If it still won't budge, try a heat lamp or heat gun.

[Centenniel]

Second on the Kroil. It is excellent at cutting rust.

[tomf52]

Take a sacrificial (sp?) screwdriver and heat the tip with a torch until it glows. Push into the slot of the screw and hold it there until the heat has tranferred to the screw. Repeat several times and then try moving the screw with a good screwdriver while the screw is still hot.Also, try inserting a tight fitting screwdriver into the slot and give it several sharp raps with a hammer. A screwdriver with the handle cut off is best for this as it will transfer the shock from the hammer better. A long soak with either Kroil, PB Blaster, or Liquid Wrench is always a good technique.

[Andy Griffith]

If you can get the tube off of the gun by taking the magazine band loose, put the end where the screws are in a cup of kroil for a couple of days. Then, clean all the kroil off the outside of the tube and use the heated screwdriver tip or heat lamp trick and rap it good too. If it still won't come out after all this, some smart-elec evidently must have used red locktite on it some time ago. I'd recommend professional help if nothing works.

One other thing, do not under any circumstances try to hold the tube in a vise, you'll crush it! I found out this many years ago when I was young and impetuous and did things the hard way.

[2152hq]

If the penetrating oil routine doesn't seem to gain any advantage, there's a very good possibility they are locktited into place.

Depending on which grade used you'll need anything from some demanding pressure on a screwdriver, to some heat to break the bond. Some need alot of heat.

If heat is needed (and it can help with rusted in place screws too as already stated), you can use an electric soldering gun to apply the heat.
Get the tip tinned and loaded with a good size ball of solder and then put a piece of aluminum foil over the screw head and surrounding tube to avoid discoloring anything. Place the tip in contact with the screw head (foil in between) and heat it up good. If you've already soaked in oil, that should start to bubble and smoke a little. Take the heat away and quickly try to loosen OR EVEN TIGHTEN JUST A LITTLE TO BREAK THE BOND. It may take a couple of trys.

If you want to try more heat, take a tight fitting screw driver and place it in the slot , or even a same diameter rod with a nice flat face to it that sits on the head of the screw. Then take a propane torch with a fine tip flame and concentrate it on the screw driver shaft or rod above the tip away from the gun parts. The torch will heat up the driver tip or rod and transfer to the screw itself. It works very fast so go easy. Again pull away and try to loosen.
You'll loose a screw driver but gain the dissassembly.

Sometimes there is old blueing salts left in the tiny holes that aren't rinsed out well and they cause rust from absorbing moisture from the air. They can really lock up small parts like screws and pins. Usually a white 'bloom' is seen around the edges if that's the cause,,sometimes accompanied by some very fine rust specks. If that's the problem, it's almost impossible to get the screws out in one piece.
Then you have to drill them out and re-tap.

[DeadAye]

PB blaster - Let it soak in for a few hours.
You can also heat the area the screws are in with a heat gun and then run some candle or bee's wax in.
If you have to break them to remove them - A new plug is about $30
Nu Line Guns bought all of Winchester's *Perfect Repeater* parts, btw.

[FlYFiShErMaN]

Originally Posted by Centenniel

Second on the Kroil. It is excellent at cutting rust.

Another vote for KROIL - it really is a great product. We use it here in FL on our trailer lugs, that get dipped in saltwater. This stuff really does a fantastic job on rust.

[649 Bodyguard]

PB Blaster! ( It works for sure )