I'm going to take you through a disc brake burp is different to a bleed to begin with we need to level four brake lever make sure the reservoir is horizontal to the ground so we will undo the brake lever clamp bolt angle break up and just nip flat up to keep it in position when we've got our brake leave in the correct position we're going to remove the screws which hold the reservoir top cap in place on this particular model there's three screws now lift off the top cap underneath that we will find a rubber boot will create name for it as a diaphragm lift that off now expose risk for now we can get to burp the system we need to ensure that we brake fluid is topped up to the top of the reservoir now topped up we need to do it's a press brake lever back to the bar by doing this we see air bubbles start to appear out the system you want to encourage all the air to escape by priming the system continue press the brake lever slowly back to the Bob the air bubbles come out generally we'll only need to do this for about five minutes at most okay pretty much finished burping a sister we've got a nice firm bite on the brake lever now there's no air coming out the system so the last thing we need to do is just make sure the fluid level or level is topped up right to the top so there's no air gaps doesn't matter son skills over ensure so there's not going to be nowhere in the system when we close it back up next reassemble diaphragm then on top cap where is it we've had oil which would have spilled over so we need to clean it up good put up to use would be disparate cleaner or isopropanol as a product which is highly recommended for Rouge disk brake fluid once we've got that closed up cleaned up we can reset the brake lever to this original position brake cleaver clamp bulb do that reposition the brake lever back to its original position sign out if your carbon fiber bars is very important to use a torque wrench to ensure that you do not over tighten that clamp and damage the carbon fiber bars