Guys I can t see anything in my brake and clutch reservoirs If I open them to...

Guys, I can't see anything in my brake and clutch reservoirs. If I open them to check could I be introducing air into the system?

  • If it has nothing in it you will have to open sooner or later

  • Right, I assume it's bad practice to just top up the old fluid with new stuff. Especially since there's no way of know what someone put in there before me.

  • Very bad as it becomes contaminated straight away

  • Cool. Will have to get a bleeding kit and give the whole thing a go. Looks an easy job.

  • Very easy job mate. Make sure you bleed the master cylinder as well and leave the lid off with the lever cable tied back over night to ensure all air has exited the system

  • Just top it up if youre not sure, but dont ride it like that.

  • What do mean? Top it up with dot 4 and hope for the best? But don't ride it like it is now?

  • Brake fluid absorbs moisture so don't leave it open, exposed to air long. Get it in and closed as quick as you can.

  • Thanks guys

  • Bike maintenance is a scary thing for novices

  • You dont hav e to rush filling it up ,brake fluid isnt THAT hydroscopic!!!,

  • Push NEW Fluid up from the bleed nipples, when the reservoir is near full or clear fluids starts coming thru, use a syringe to suck out the reservoir. Wipe inside and all parts clean, refit the white lower baffle plate and again fill from the bottom up until full. NOTE: Do Not squeeze the lever without the baffle plate in place or you will create a fountain of fluid!!! For the brakes, push equal amounts gradually thru each side brake caliper nipple. You won't need to pump/bleed the brakes this way. :)

  • Brake/Hydraulic fluid is hygrographic i.e. it easily absorbs water.....lethal mistake because the water boils and will not compress to give effective braking pressure.

  • Sorry Donald but Yes It Is! They have special meters to test the water content. Fluid should not be changed on rainy days because of this.

  • A large volume syringe and suitable sized plastic tubing is all you need. I would get 2 or 3 syringes. See my comments further up about bleeding the lines from the bottom UP.

  • Every two years or 16k miles or you get this

  • Better tell the bikeshops to stop on rainy days then lol