Scooters usually have hydraulic brakes that require periodic bleeding. Usually, when air enters the hydraulic drive, the brakes begin to work poorly and even fail, and this is unsafe for movement. Air is eliminated by pumping the scooter's brakes. It is advisable to perform the operation with an assistant.
It is necessary
- - brake fluid;
- - rubber hose;
- - container for collecting liquid;
- - set of wrenches
Instructions
Step 1
Before bleeding the brakes, wash the scooter, paying attention to the brake valves and the brake fluid reservoir. The latter looks like a black box and is located on the steering wheel under the cladding. This will prevent dirt and dust from entering the hydraulic line and causing new brake problems.
Step 2
Check the brake fluid level at the sight glass in the reservoir (black box). To do this, remove the necessary lining parts and get to the tank. If it does not have a sight glass, open the lid on the tank. If the fluid level is insufficient, top up to the upper mark.
Step 3
Locate the brake cylinder in the area of the wheel on the fork next to the brake disc. On this cylinder, find the valve covered with a rubber cap and open the cap. Put a rubber hose of a suitable diameter on the valve fitting so that it fits tightly enough and does not come off under the pressure of the fluid. Lower the free end of the hose into a suitable liter container with half of the brake fluid poured into it.
Step 4
Press the brake lever fully and hold it in this position. In this case, unscrew the air release valve with a wrench of the correct size until the brake fluid comes out of it through the hose along with air bubbles that have got into the brake fluid. As soon as the fluid stops coming out, release the brake lever and press it again after 1-2 seconds. Repeat pressing until the air bubbles are gone.
Step 5
Watch the level of the brake fluid in the reservoir. As soon as the level drops to the lower mark or to 2/3 of the volume of the tank, add liquid to the upper mark. If you miss the point to top up, air may re-enter the hydraulic line and the procedure will need to be repeated. Use only the brand of brake fluid recommended by the manufacturer. Find out in the instructions for the scooter. Avoid mixing fluids of different brands or manufacturers. If you are going to use a new brand, first merge the old one.
Step 6
After the end of the procedure, screw in the air release valve until it stops and only then remove the hose from it. Recheck the brake fluid level in the reservoir and top up if necessary. Close the reservoir and reinstall all the removed liners. After settling and filtration, the liquid from the container can be used again.
