Check Motorcycle Brake Fluid

Video Transcript

"Alright in this section I'm going to show you how to check your brake fluid and possibly bleed if you need to, if you have really low pressure. This is your Master Cylinder right here. This is where all the fluid gets collected and this is pretty much your whole brakes right here, and this tube runs down, right to this and this pushes it through and that goes down to your calipers that we worked on earlier. So what you want to do is remove this screw, and then this is a screw off top. Now brake fluid is really, really bad stuff, so you don't want to get it on anything, skin, paint, anything. First thing you do when you check a Master Cylinder is you grab this top seal, pull it out real slow, and you're going to make sure it looks just like this. Most of the time, when you have a, when you do a brake job, and they've really gone through it, this thing will be just all over the place. Most of the time you'll see it looking like this. It'll be turned inside out from all the pressure. So you always want to get it pushed down, make sure it looks just like it, how it, how it should, in it's real form. Right here, the brake fluid looks real good, and it's right at the right level. So, in this case, you wouldn't do anything to it. But if you needed to, if you needed to get in there and bleed the brakes or anything, the first thing you're going to do is you need a, a kit like this. This is a brake bleeding kit, comes with a filler, now this makes it, for a one person installation. All this does right here is it clicks onto the top of your reservoir you're going to be taking this piece right here and putting it onto your caliper there's a little fitting and you put that on the fitting and this is going to suck all of the fluid down and what it's going to do is remove all the air bubbles in the line. During that process this fluid needs to stay full, if this does not stay full you're going to suck air bubbles into the line and you're going to have all kinds of problems. So when you get a kit like this you fill this with your, their proper brake fluid, in this case its going to be dot 4, fill it up, turn the valve on and this will keep this full the whole time and all you have to do is take this and your going to go down to your caliper and on every caliper there is one to two little fittings on here with rubber caps. All you do is pop the cap off, just like that, and you're going to take this and put it on top, just like that. Then you get your air fitting, plug it in and everything is ready, you''re going to get your tool, which is normally a eight or nine millimeter and what you do is put it on top, now what you do is, when you pull this trigger its going to get real loud and you're going to start trying to suck all the air out of the line down from here. So I'll turn it on and what you're going to do is you're going to loosen this just a little bit and then you're going to see all the air bubbles coming down the line and once you start seeing all the air bubbles coming down the line, you're just going to wait until you start to see a steady flow of fluid and once it's steady you just tighten this back up and move to the other side and your always going to start low. Get all your air bubbles out low because in the end, air travels always to the top and you're going to end here in this fitting right here. This is the very top where air bubbles could end up and when you get an air bubble this, this lever right here will go straight down, you wont have any break control whatsoever. So always just work your way from the farthest to the closest and that's basically how you bleed the brakes."