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Brake fluid refresh...

Discussion in 'Other Motorcycles' started by BallAquatics, Jun 17, 2024.

  1. BallAquatics

    BallAquatics Active Member

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    Flushed and refilled the brake fluid on the NC700X. I noticed the fluid was a bit discolored when I had the bike out for a ride this morning. I flushed all the fluids when I first got the bike, but that was back in 2020.

    [​IMG]

    Since I started using a 100ml syringe to vacuum out the old fluid the job takes only a few minutes to complete. It works just like an expensive vacuum system, but you can get syringes on-line, or locally for just a couple bucks.

    [​IMG]

    I hang the syringe on the brake lever and this keeps a supply of fluid in the tubing and prevents any air from entering the system.

    [​IMG]

    After I have just a bit in the tubing, I remove all the remaining old fluid from the master cylinder using a pipette. I then fill the master cylinder with fresh fluid. You then use the syringe to remove the rest of the old fluid being careful not to let the master cylinder run dry. I think I topped up the master 3 or 4 times during the process.

    [​IMG]

    The NC700X has only a single caliper at the front so it only took about 85ml to remove all the old contaminated brake fluid. You will notice the clear new fresh fluid entering the syringe when you have all the old fluid removed.

    A quick and easy way to keep your brakes working at 100%
     
    BallAquatics, Jun 17, 2024
    #1
    chris123, Fuller56 and Franz like this.
  2. Timbox

    Timbox Well-Known Member

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    Great pics and good way to do that. I am a little confused, though. You stated you did the flush fist and then noticed that the next day the fluid was discolored again? Did I miss read that?

    If you did change it and then still have the discolored fluid, I would guess that you have some fluid gum inside the caliper? Once a system gets really brown or that gummy fluid, I like to remove and clean the puck from the brake calibers. If that is not the case, guess just left over fluid in the brake lines is what caused the fluid to turn on you.
     
    Timbox, Jun 18, 2024
    #2
    BallAquatics likes this.
  3. BallAquatics

    BallAquatics Active Member

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    I must have worded that part badly. I flushed all the fluids when I first got the bike, but that was back in 2020. Yesterday's photos are of the 4 year old fluid I put in back in 2020 in the process of being flushed. New fluid is clear as water. Lol
     
    BallAquatics, Jun 18, 2024
    #3
    Timbox likes this.

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