Bleeding motorcycle brakes is quite a tricky business. This is basically because it is safety related. It is crucial to follow the precise process to avoid any safety issue. Learning how to bleed motorcycle brakes is very important before attempting it. In addition, you need some essential tools to carry out this task. A note of warning though, you need high-quality tools to achieve the desired result.
Tools needed when learning how to bleed Motorcycle Brakes
Below are the tools you need in the process of learning how to bleed motorcycle brakes:
- Bleed bottle with the rubber connection hose
- Dual ended wrench (ring type and open end)
- Small Hammer
- Ratchet driver with a quarter inch drive socket
- Phillips Driver Bit
- Brake fluid; try to check the shop manual to get the perfect grade. It is important not to mix different types of grades
- Water, to clean possible spillage
Learning how to bleed motorcycle brakes is part of a regular maintenance DIY method that will save you a lot of stress as well as money. Doing a periodic maintenance is highly recommended to keep your bike in great shape all through the year.
Steps to Bleeding the motorcycle Brakes
Protect the Paintwork
The very first step on how to bleed motorcycle brakes is to remove the reservoir cap and fill the reservoir up to slightly below the edge of the top. As a precaution, place an absorbent napkin around the edge of the reservoir to absorb any spillage. This is especially important to protect the bike’s paintwork (such as front fender, frame, and gas tank) from possible spillage. There needs to be a rubber sealing diaphragm underneath the reservoir. The work of the diaphragm is to keep the brake fluid secured. Brake fluid must be poured into the bleed bottle with the outlet pipe below the surface of the fluid. Place the ring end first on the bleed nipple, followed by the rubber hose of the bleed bottle.
The Process involved in bleeding Brakes
Having put everything in its place, with the reservoir filled, you can start the bleeding. With a bare system, open the bleed nipple about one-third of a turn and pump the lever repeatedly to propel fluid into the brake hose. You must keep topping up the reservoir because air can come into the system. As you actuate the brake lever, a string of air bubbles will be seen escaping from the end of the bleed bottle’s tube. These bubbles are the air inside the system that is being expelled out by the fresh brake fluid.
No air Bubble
The last step in how to bleed motorcycle breaks involves pumping the brake lever three times and holding it in with the applied brake in position. The bleed nipple will be closed by now. Repeat the pumping again. When the brake lever is in, open and close the bleed nipple. This process must be repeated until no air bubble is seen coming out of the bleed tube’s end.