Hello, John Talley here with Partzilla.com. Now if you work on any
machine long enough, eventually you're gonna run into a stripped bolt, a broken
bolt, a stripped out screw, or in this case a stripped out Phillips head. And on
this particular one it happens to be on a brake master cylinder. There are a
couple of different techniques that I can show you that might be able to
extract this one out so we can go ahead and bleed those brakes. Now do you need
to remove it from your machine? No, I just thought it would be simpler to bring it
over to the table, that way you've got complete access to see what I'm doing
and see if I'm successful on extracting the screw or not. So let's go ahead and
take this, get it tightened down in the vise, and then I'll show you the ways
that I'm gonna attempt to get that thing out of there.
And as you can see, this is our our damaged screw head. Then this happened so
easily because the majority of your master cylinder screws like this one
they're made out of aluminum. And you put in the wrong size screwdriver, you're not
paying attention or maybe it's corroded a little bit, you put some torque to it
and spins it out. And that's exactly what happened here. A little bit too small of
a Philips screwdriver is what did this one in. So for attempt number one, we're
going to use the correct size Philips screwdriver, and put a lot of down
pressure on it, and see if that lets it go. No.
Now at this point, stop. Don't try it again because if you don't, you're gonna
actually damage it where the correct size bit will not remove it. At this
point, you need to go to stage two. This is probably one of my favorite tools out there,
and this simple device is an impact-- a hand impact. With this attachment, you can
go with different sized Phillips bits that should have a better chance of
knocking this loose. Pick one that's gonna fit in there the best. See that one
barely rocks? That's what we're after. Now had we taken that original one and put
too much effort into it, it would have damaged it and even this would not have
had a chance to extract it. Now these things, they ratchet a little bit. You
want to make sure it's ratcheted all the way to the extraction point. That way
when you hit it, it's going to impact it and turn it at the same time. You don't
have to put a lot of force turning it, you just put a little bit of
pressure against it. Just ever so slightly. Now we hit it. We're just
looking for one little edge, it only has to bite it that one time to get it to
release.
There it is. Trust me, you would have never pulled that off with a regular
Phillips screwdriver. No way for that to happen. That little guy? Probably the
favorite tool I've had in the toolbox since I was, 13 years old. That is what
success looks like. Now what would do if that didn't work?
Well, your last option would be to drill it out. But there is a specific way you
need to do that. You want to pick a small pilot drill inside of the diameter of
the actual threads, because we don't want to damage the threads. And basically all
we're wanting to do is just drill down a little bit, maybe a quarter of an inch.
Then you come back with a larger drill bit with the same angle as the seat.
Because all we're trying to do is remove the material in this outer area to where
you can lift the cap off. So you drill with this one first, and then finish off
with this one. And then hopefully you can grab it from the side with a pair of
pliers and then extract it. Now if it's really corroded in there, it's pretty
much going to be game over. You'll have to drill a little all the way through,
and then it's going to take a fine touch to rethread this. At that point you're
probably going to end up replacing it. But I'd still give it a shot, and all I
have to do now let's go to Partzilla.com and order a replacement screw. So
what did we learn from all this? Having the right tool makes all the difference.
Well listen, if you need any tools or parts for your machine, why don't you
come see us at Partzilla.com and we can get you taken care of.
You have any questions or comments? Why don't you leave them in the section below and
I'll do my best to answer them. We just want to say thank you for shopping here
with us at Partzilla and we will see you in the next video. Y'all have a great day.