how to remove a siezed up screw?

i got a hand drill realy cheap and it needs cleaning so i tried getting the main gear off but i thing its seized p what can i do to get it off in one piece?

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lemonie8 years ago
WD40 and a long soak.
Impact-driver or whacking the screwdriver with a hammer.
Combinations of the above.
But do you need to take it apart to clean it?

sharlston (author)  lemonie8 years ago
you mean likeshocking the screw to loosen it? its a really old drill so im going to take it apart to grease the conponents
You might be able to force oil/grease in, but if it's not going to come apart you'd have to live with that. L
sharlston (author)  lemonie8 years ago
yes ill be able to live with it it just wold be nice to keep it maintained im going try the impact driver with the hammer but how will this work exactly?
If you whack the screw you may jar-loose some of the corrosion, or you may not. It's an option, but look at the thing and decide whether hitting it might loosen it up. L
sharlston (author)  lemonie8 years ago
just need to remove the circlip without breaking it
They're springy rather than brittle. Does it have holes for expanders/compressors? You can usually wangle them with a screwdriver though...

sharlston (author)  lemonie8 years ago
yes ive removed them but well i dont see anything diffrent and theres no movement
They might need a bit of WD40 and hitting too perhaps? L
sharlston (author)  lemonie8 years ago
im gonna try it thanks again
sharlston (author)  lemonie8 years ago
i did it i didnt realise i whacked it 4 times and i didnt even realise the screw was loose thanks alot it earned you best answer
Oh good. Might not be entirely appropriate for a Yorkshireman, but hammers are sometimes known as "Manchester screwdrivers"... L
sharlston (author)  lemonie8 years ago
sharlston (author)  lemonie8 years ago
i did it i think the corrosion has knackd the thread up becuse the screw wont budge with a screwdriver but will move when you whack it
sharlston (author)  lemonie8 years ago
it would also be nice to take it apart to grease the threads for future problems that coald occire
Re-design8 years ago
Drill the head of the screw out. then you should be able to get the case apart. Now if you're lucky you can get pliers on the screw. If not then grind the screw level and drill that out and retap or use a self tapping screw to replace it.
sharlston (author)  Re-design8 years ago
sounds complicatied
There is a good reason to read all of the answers before you try the first one. I naturally jumped to a conclusion and assumed that the screw was in fact seized. And interpreted that you had probably also stripped out the slot or cross and the screw driver could not grip anymore. Now, if that is in fact not the case, then you should by all means try all of the other well thought out plans. My plan is the next to last one to the other one is to not fix the drill at all or chuck it and get a new one. Is the drill case aluminum? If so and the bolt is steel it might really be seized since steel is easy to seize in aluminum with out anti-seize grease. As a last resort to try fixing it if it comes down to it, my method can be very useful and easy to do. My first attempt was successful after I had twisted of a valve cover bolt on my first car at 14. I dad told me how to do it, gave me the tools, and and told me "you broke it you fix it". Maybe you'll have better luck with your project and if you don't then you might learn something.
Burf8 years ago
Before you go all medieval on the screw, do one thing, try loosening the screw by turning it to the right. Seriously. You may be dealing with a left-hand threaded screw. Most Jacobs chucks are secured with one.
sharlston (author)  Burf8 years ago
jacabs chuck?thats what mine is aswell
sharlston (author)  Burf8 years ago
its not the chuck its the main crank gear
Burf sharlston8 years ago
Yeah, I got that, I was just using the chuck as an example. If the gear's normal rotation is counter-clockwise, its feasible that it would have a securing screw with left-hand threads. Just thought I would mention it.
sharlston (author)  Burf8 years ago
ok im going to buy some penetrating spray think that will work?
jeff-o8 years ago
Try dropping a bit of WD-40 in there and let it sit for a while. Repeat. An hour or so later try turning the screw.
sharlston (author)  jeff-o8 years ago
tried that