Hello, John Talley here with Partzilla.com.
Today I'm going to show you how to swap out the front brake pads on our 2009 Yamaha YFZ450R.
Pretty simple to do, starts with just lifting it up in the air with an ATV jack, so let
me get that done and we'll dive into it.
Alright guys this is going to be a skill level one, so it's really going to be simple.
Let's go over some of the tools you're going to need to pull this off.
It's a fairly short list.
On the socket side, just a 12mm.
Added to that, a 5mm Allen, 3/8th extension, a flat-blade screwdriver, and then a 3/8ths
ratchet.
And as always, a good torque wrench.
You want to watch the videos all the way through because I'm going to give you the torque values
for every single nut and bolt that we touch on the unit that requires a torque value.
Alright, as far as the parts go, if you would, reference our parts diagrams.
Be very careful on the front because you actually have a different part number for the front
left and the front right brake pads.
So, once you've got your tools and your parts together, we can go over there and I'll show
you how to do it.
Alright guys, let's start off by just getting this tire off.
14mm.
Make sure you don't lose all these washers.
This one's not in trouble yet, but I can tell you from experience when they do completely
wear out it does not stop effectively.
You start hearing that metal on metal grinding.
We've still got about maybe a third of the pad left, but I want to go ahead and replace
these.
So, before you actually remove the caliper what you want to do is go ahead and loosen
up these two pins right here that actually go through the brake pads.
They're just a couple of 5mm Allens.
It's a whole lot easier to do with the caliper still mounted to the machine.
Alright with those loosened up all we need to do is remove the two 12mm bolts on the
backside of the caliper bracket.
And then just slide it up.
Alright, with the caliper off, what you want to do is put a screwdriver-- because I'm not
going to reuse these pads-- and just turn it and that'll compress the caliper pistons
back into their bores.
At this point, go ahead and remove your pins.
And now you can remove the brake pads.
Going to clean this up just a little bit and once we've got that finished we can go ahead
and put it back together.
It's not that bad, but since we're here I might as well get it cleaned back up.
Alright want we want to do now is make sure that it's moving freely on that bracket.
That feels pretty good so I think we can leave it alone.
If it did not want to move freely, then you'd want to pull it all the way out and add a
little grease to these two areas here.
But my boots are in good shape so I think we're going to be okay to go forward.
Looking at these pins, they need to be cleaned up just a little bit, so I'm going to go over
to my wire brush and knock off that surface dirt.
Alright let's go ahead and get the brake pads put in.
Keep in mind there's a difference in the part numbers between the front right and the front
left.
Just make sure you order both of them.
Just going to set the inner one in there first.
Now the outer.
Go ahead and push your pins in and just stop at that point.
We don't want to start tightening them down just yet.
So, then just lightly holding in place, go ahead and spread them open, slide the caliper
back up to where you can rebolt the bracket.
Okay, now we need to torque the bolts that actually mount the caliper bracket to the
hub and that's going to be 20 foot pounds.
Alright next we need to torque down the pins that actually go through the brake pads up
front, and that is going to be 12 foot-pounds.
But before we do that we want to take a little bit of locktite and put it on the threads.
Now I'm using red, but you can actually use blue in this particular instance.
Alright, next, we can go ahead and put our little spacer back in and mount the tire and
then get it torqued down.
The torque on the front wheel bolts is 32 foot-pounds.
Go ahead and pump my brakes back up.
That should be enough to hold it in place while I get these torqued.
Alright that's one side down, one to go, so let's jump over on the other side and get
it done.
Alright this is going to be the exact same procedure as we did on the front right, just
make sure you have the correct part number as it's different from the front left.
Now remember, the torque for the caliper mounting bracket is 20 foot pounds.
The torque for the brake pad pins is 14, and then your wheel bolts are 32 foot-pounds.
Well alright guys, that pretty much wraps this one up.
I would recommend that each time you change out your brake pads, go ahead and do a brake
bleed as well.
So if you would check out our video on this machine on how to do that.
Well listen, if you need any of the parts for your machine, why don't you come see us
at Partzilla.com and we can get you taken care of.
If you have any questions or comments, leave them in the section below and I'll do my best
to answer them.
Til next time we just wanted to say thanks for shopping with us here at Partzilla and
we will see you in the next video.
have a great day.