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Help With Seized Screw

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miketuite View Drop Down
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    Posted: September 19 2009 at 5:10am
I just acquired a nice BSA No.5 MkII, and I can't remove the rear trigger guard screw. I've tried tapping with a bronze hammer, dousing it with penetrating oil, warming it with a hair dryer and plain ol' brute force. It won't budge. Adding to the problem is that the slot in the screw head is very shallow. A screw driver blade can't stay it in when it's twisted.

I can't think of anything else to try. If anyone has a suggestion, I'd appreciate hearing it.

Thanks,

Mike
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lithgow Quote  Post ReplyReply Direct Link To This Post Posted: September 19 2009 at 1:25pm
Try heating the thread end of the screw with a soldering iron. This sometimes works.
Make sure you have a screwdriver that fits the slot, sounds like someone already used an incorrectly fitting screwdiver. You may need to recut the slot a bit.
When you refit it get a new screw.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: September 19 2009 at 9:28pm
You might try this as well.
Firmly support the rifle & trigger guard from behind on something like sanbags, or a leather bag if you have one. Now remove any oil or grease that is in the slot from earlier tries.
 
With a correctly sized screwdriver push HARD into the slot without turning to force the bit down as best as possible into the slot. Now whack the end of the screwdriver with a rubber hammer to really seat the bit in as tight as humanly possible.
Now while you continue to push down start to apply twist, but not enough to jump the bit out of the slot. You're not trying to turn the screw at this point, just apply torque.
 
Now have someone (who you trust)LOL give the screwdriver some more rapid fairly heavy taps with the hammer while you apply progressively more "twist".
 
This sort of mimics an impact driver & may break the bond, allowing the screw to be removed.
 
Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Cookie Monster Quote  Post ReplyReply Direct Link To This Post Posted: September 19 2009 at 10:03pm
Shamu that has worked for me as well
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Post Options Post Options   Thanks (0) Thanks(0)   Quote miketuite Quote  Post ReplyReply Direct Link To This Post Posted: September 20 2009 at 12:49am
I really appreciate your suggestions, gentlemen. You've added a lot to my knowledge base. The screw came out last night (un-ruined.) I guess I, unknowingly, used Shamu's technique.

I used the bit that seemed to fit the slot best. I braced the rifle on a table, stood over it with the bit in the slot, put my weight into it, twisted it and out came the screw.

Thanks again,

Mike
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: September 20 2009 at 6:05am
It works even better if you are the "hammer wielder".
You just have to trust those who are "helping"Star
Glad it worked either way.
Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote White Rhino Quote  Post ReplyReply Direct Link To This Post Posted: September 21 2009 at 7:42am
OK actually heating the thread end of the screw is not good ... that could cause it to gall if it comes out .. Heat the head side ..with soldering irom and let some bees wax melt on it at same time .. The screw will grow length wise ...Bees wax has a natural capulary action ... and will help ..(DO NOT USE PARRAFINE IT WILL CAUSE IT TO GALL ALSO )
and if you need Bees Wax for just that ..and dont have none go down to the local Catholic church and ask the preist ...the candles they use are usually made from pure bees wax recapie like th old days ....
"White Rhino"

"Everybody's got to believe in something. I believe I'll have another beer." --W. C. Fields
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