New brake pump, new hoses. The braking system is almost ready to tip me forward.

It's time for truth.....but why the fuck doesn't it go to pressure!!!

How frustrating is it?

Calm. There are little tricks to solve this.

So, gloves in your hands, some tools and.... ready to have fun.

Motorcycle brake does not come under pressure: let's find out the causes.

There can be many reasons why a brake system does not come under pressure. Let's start by creating 2 main cases.

New components:

If the pump, pipes or caliper are new the problem is almost certainly due to an accumulation of air that needs to "leave the system".

So don't despair: if you bought quality components it will be very difficult for them to be defective.

Leave the calipers resting on the discs and remove only one bolt without tightening it. Don't stare at them yet. (you'll find out why later).

Fill the fluid reservoir and start by opening the bleeder on the calipers (first one and then the other) and operate the brake master cylinder lever several times.

Initially you will see the oil level drop very slowly. When you start to see the pads moving slightly... (this is a little trick) spread the pads by hand. In this way the air that is left in the caliper is pushed upwards.

Repeat this operation 2 or 3 times (if you have 2 pliers do it on both).

Now the lever will be nice and hard, ready to brake.

If you really want to eliminate any doubt, bleed the caliper again (if it has a bleed), so you can remove even the slightest remaining air.

Already existing components

Here things get complicated. If the system has lost pressure or you are unable to put it under pressure, there could be various causes.

The system loses pressure: do a simple test.

• Bleed and temporarily put pressure on the system.
• Put a rubber band on the pump lever so as to keep the lever pulled slightly (lightly, I recommend) and leave it like that overnight.

If the lever is loose again the next morning, check whether there are oil leaks somewhere. Sometimes it could just be a poorly tightened fitting. If there are no oil leaks then it is probably a bad brake master cylinder rubber.

Solution? the brake master cylinder needs to be serviced or replaced.

The system does not come under pressure after changing the brake fluid: if you have read the part relating to new components, follow the same procedures. If the lever remains springy, it is likely that there is air in the system that you are having difficulty getting out.

Little Trick (if you have the pump with integrated tray). Tilt the bike so that the brake hose bolt is lower than the lever body. Operate the lever just slightly (there are some small holes in the tray: you only have to see the internal piston moving slightly). If you see micro bubbles coming out of these holes, persist and eliminate all the air that is left in the pump.

Conclusion

I hope I have given you some useful ideas for solving problems with your braking system "do it yourself". Always remember that efficient brakes can save your skin, so if you can't solve problems with your brakes, ask a good mechanic for help.

If you need advice, we are available.

The mechanics and bikes are amazing - never stop having fun with them