Well this was my first time at it... so if you have anything to add, feel free. BMW says to do this after your first year, then every other year after that.
So today I finally got out to do the brakes on my Race/Track Bike (R6) and the S1...
Per the recommendation of TJ as well as other racers, I changed both over to the Motul 600. Had never done the brakes before (on any bike), but checked out the Service CD and it seemed pretty straight forward. So I expected the worse but hoped for the best.
What makes the process VERY simple is one of these --> Mityvac Brake Bleeder Kits
(2nd picture - the one that hooks to your air compressor). WOW, what a breeze.
- Remove Reservoir Cap
- Suck out fluid from Reservoir
- Top off with new fluid
- Remove cover on bleeder nipple by master cylinder, suck out fluid
- As with any bleeding of any brakes, make sure that either while fluid is being sucked from the bleeder nipple or you are pressurizing the fluid in the line by pulling on the brake lever, that you tighten the nipple back down prior to unpressurizing the line or prior to turning off the vacuum... this will help ensure you don't get air bubbles sucked back up into the brake line at the nipple you're bleeding from.
- Keep topping off reservoir and ensure the fluid doesn't get below the drain on the bottom or you'll suck air in
- Bleed/suck fluid from the front left bleeder
- Between each time of draining the reservoir and filling, PUMP the brake lever (it'll be soft).. and get the pressure back in
- Top off again... I did this a few times on each bleeder valve to ensure that I got as much of the old fluid out as possible, the front fluid actually looked pretty good after a year... the rear was a bit darker
- Do the same to the front right bleeder valve.
- Remove/Move Reservoir out from under the bike
- Remove cap and suck out fluid from reservoir
- Top off just like you did for the front
- Bleed/suck fluid from the rear bleeder valve
- Top off and continue till you get nice new/clean fluid coming through the MityVac.
That's it... go ride and test. Worked great and took very minimal time.
The best part - for what I paid for the Mityvac, it's already more than paid for itself w/one service on the S1.. plus the track bike is done now too.
And a BIG THANK YOU to TJ from Rider's Discount!!!