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Noisy Brakes: Common Causes and Possible Solutions | Allstate Insurance - YouTube
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Hi, my name's Eric O. I have over 16 years
experience as a professional mechanic and
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independent shop owner here and upstate New
York and today I want to talk to you about
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your brakes.
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Now in today's day and age and what seems
to be an endless amount of information available
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to us, it's been my observation that many
folks have ventured into the DIY aspect of
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auto repair.
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Well this could be good and can save you some
money, make sure you arm yourself with the
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knowledge and know-how to complete the task.
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Another equally important aspect to consider
besides arming yourself with the proper knowledge
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and tools, shop manuals, educate yourself
on the system and the how to's of it is safety.
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Safety is absolutely number one.
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Here in the shop we use a lift to raise our
vehicles to work on, to secure them.
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But at home, I assume most people don't have
that convenience, so you'll be using jacks
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and jack stands, so make 100 percent sure
that you understand clearly how to lift and
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secure your vehicle to provide yourself with
a safe working condition.
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And with that being said, if you are unsure
about your ability to complete your auto repair
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in any way, make sure you take your car to
a professional auto mechanic.
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Now working as a professional mechanic in
a shop, we get some DIY-ers come in occasionally
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that have replaced pads and rotors on their
own vehicle and now they've got this annoying
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squeal.
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They've got their brand new components there,
they're pulling up to the stop sign and they
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just get the âerrrrrrrrrâ loud squeal.
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They don't know what's up.
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They want to know why.
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I'm going to show you some brake pad replacement
tips and tricks that we do in the shop to
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help eliminate squeaks and squeals.
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As I'm pulling this brake caliper off this
vehicle so we can have a look at this brake
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job, keep in mind the parts use are quite
important in this process.
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You've got that old adage, âYou get what
you pay for.â
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Well, that kind of stands true with brake
parts.
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Don't skimp on brake parts.
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Last I checked stopping shouldn't be an option.
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Make sure you look and see what your vehicle
came with from the factory in reference to
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the friction material.
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You know, did it take ceramics, did it take
semi-metallicsâŠand just replace it with
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the equivalent to that.
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Besides replacing your brake pads with the
correct friction material, your brake disc
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is also equally important.
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You want to make sure that it is within its
service limits.
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as far sickness, if you plan on reusing it.
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If it's not, you want to make sure you replace
that with a high quality replacement rotor
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also.
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Now this is from my observation from doing,
you know, thousands and thousands of brake
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jobs, that we assume that our break noiseâour
brake squealsâcome between the brake pad
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friction material and the brake rotor.
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Now that can be in some cases, but I have
discovered in most cases, it's where we have
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a metal-to-metal contact.
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So you can see where these brake pads were
riding on the brake caliper, you get your
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outer pad and brake caliper ears; your inner
one on your brake caliper piston, we've got
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a metal-to-metal contact there.
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We also have a metal-to-metal contact with
the ears of our brake pad on the brake pad
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hardware.
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Now anywhere that we have a metal-to-metal
contact, that we have you know minute amount
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of movement, we can get noise and we can get
squeals.
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Get this brake caliper bracket off here.
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Iâll show you guys a few tricks and tips
that we do as professional installers to help
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eliminate brake noise.
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It is actually a simple yet often overlooked
aspect of the brake pad replacement procedure.
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One of the things I can mention, is brake
pad hardware.
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Now brake pad hardware is often neglected,
too.
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Make sure you replace it when you're replacing
your friction material.
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It wears out just like the pads do.
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And prior to installing your new brake pad
hardware with your new friction material,
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it's very importantâit's probably one of
the most important parts of itâthat the
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mounting surface where the brake pad hardware
attaches has to be clean.
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As you can see, these brake pads are just
replaced.
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Iâm just going to give you a good shot of
that.
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You can notice the amount of buildup and rust
and crud that is on these.
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They were not cleaned up and they certainly
weren't lubricated behind them prior to installing
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the hardware on a brand new set of pads.
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It's our practice here in the shop to use
a sandblaster to clean out the areas of the
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caliper bracket before installing the new
hardware.
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And the key to this whole procedure is lubrication.
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You actually lubricate these metal the metal
services behind the brake caliper hardware,
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and this will eliminate tons of squeals believe
it or not.
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The same goes for our metal-to-metal contact
that we're going to see on the friction material
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and also on our caliper guide pinsâanywhere
we have this metal to metal contact is a potential
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spot for noise and often very overlooked and
neglected.
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Now that you have that lubed up, we're going
to go ahead and install our brake caliper
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hardware on top of our freshly clean bracket
and lubricated bracket.
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I'm going to show you the next step in noise
preventionâthat is going to be lubricating
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our caliper guide pins.
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This is kind of a comment setup for a disc
brake here.
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We're going to take and just lubricate our
guide pins.
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Now you can get too excessive with these so
make sure you look at your service manual
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at their recommendationâthese you don't
want to overdo.
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So we've gone ahead and mounted our caliper
bracket.
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Now we've got our pads in place we've, already
installed our brake caliper hardware and we
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paid close attention to the mounting surface
of the brake caliper hardware and the amount
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of rust and crud was built up in there.
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Like I say, often overlooked and neglected,
but very important as far as brake pad operation,
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allowing your brake pads to sit in here freelyâitâs
very important.
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You should never have to fit or hammer in
your brake pads ever.
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They should always just float in here nice
and free.
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Lubricating that will keep those from rusting
in the future and also help that with that
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metal to metal friction and potential noise
area.
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The next break installation tip I can give
you is on the actual brake caliper itself.
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Now the important part of this is, just like
it was on the caliper bracketsâcleanliness.
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We want to make sure that we remove, you know,
rust and scale and dirt debris, and brake
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dustâwhatever else builds up here on the
brake calipers from these ears, from the caliper
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piston itself.
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If any of these components are worn or rusted,
you know, beyond repair, obviously at that
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point that have to be replaced.
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But the installation procedure that will show
you it will stay in the same whether youâre
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replacing the caliper reusing your old one.
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I've gone ahead and got rid of all the debris
and rust buildup that was on this caliper,
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went ahead and cleaned it off with some brake
parts cleaner.
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I'm going to go ahead and lubricate the brake
caliper and like I said, this is often overlooked.
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So I just put a little bit of our brake caliper
grease on the brake caliper ears and then
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also on the brake caliper piston face where
it's going to have that metal to metal contact
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with the outer portion of our brake pads.
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Once that's done, I'm going to take and install
our brake caliperâthis is where things can
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get kind of messy and you have to be pretty
mindful of what you're doing.
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You don't want to contaminate your friction
material with greaseâyou don't want to get
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grease on the wrong side of your pads that
can make quite a mess when you have to pull
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it off and clean everything.
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So be careful and observant when doing this
portion of it.
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Weâll swing our caliper right down on our
pads.
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Iâve already lubricated are pins so weâll
stick those back in, weâll tighten up to
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factory specsâŠweâre just about done.
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All right folks, I hope you found this useful.
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As simple as it seems, it is often overlooked
and we see it all the time, you know, whether
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it's a DIYer or even sometimes in professional
installation applications, we see this aspect
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of the brake system overlooked.
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The lubrication of these metal-to-metal contacts
will eliminate noise.
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Make sure you're cleaning your caliper bracket.
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Make sure youâre replacing your brake hardware.
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Use high quality brake pads and rotors and
you'll be happy.
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And just remember folks, if I can do it, you
can do it.
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Thanks for watching.
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