Author [ES] [CA] [PL] [PT] [IT] [DE] [FR] [NL] [DK] [NO] [GR] [TR] Topic: Brake pedal low  (Read 257 times)

0 Members and 2 Guests are viewing this topic.

Offline Sunchaser

  • S1000R Pro
  • ***
  • Posts: 181
  • Country: us
  • City / Town: Largo, Florida
Brake pedal low
« on: October 08, 2019, 04:37:33 PM »
My rear break pedal is suddenly way low.  It will still apply some force, but way down at the end of the stroke.  Reservoir is low, but above the min line.

Bike is a 2016, 6,500 miles, always garaged, never down or abused.  TIA for thoughts...
2016 BMW S1000R, I likes 'em naked.
"BMW - The Ultimate Driving Riding Machine!"

I am NOT a Biker, nor a Hooligan, Im a Motorcyclist.

Offline starpower

  • S1000R Pro
  • ***
  • Posts: 332
  • Country: us
  • Bike: '14 S1KR, ZeroS
  • City / Town: Potter Valley
Re: Brake pedal low
« Reply #1 on: October 08, 2019, 04:53:17 PM »
I would top off the res. for starters, check pads (would be odd at this mileage). Past that it could be a bad seal.
"The most beautiful things in the world are those from which all excess weight has been eliminated" - Henry Ford I, 1893

Offline Sunchaser

  • S1000R Pro
  • ***
  • Posts: 181
  • Country: us
  • City / Town: Largo, Florida
Re: Brake pedal low
« Reply #2 on: October 08, 2019, 08:59:56 PM »
Topping off will be the first thing I do, as soon as I get my jacks out from under my sons Fireblade.  Hes replacing his tires and my garage is a mess.

I have a 911 and will review any error codes etc. too.

Thanks
2016 BMW S1000R, I likes 'em naked.
"BMW - The Ultimate Driving Riding Machine!"

I am NOT a Biker, nor a Hooligan, Im a Motorcyclist.

Offline Sunchaser

  • S1000R Pro
  • ***
  • Posts: 181
  • Country: us
  • City / Town: Largo, Florida
Re: Brake pedal low
« Reply #3 on: Yesterday at 07:45:23 PM »
Also, while up on the jack, the front lever had no effect while the wheel was spinning and lever applied.

Turns out the fluid level was plenty high, but ugh!  Brake fluid very dark and ugly.

Drained the reservoir and removed the cylinder.  Researching what to do while waiting for a Haynes manual.   Must be a rotted seal or something in the cylinder.  Kinda disappointing, never had a rear cylinder issue in 50 years of riding.



2016 BMW S1000R, I likes 'em naked.
"BMW - The Ultimate Driving Riding Machine!"

I am NOT a Biker, nor a Hooligan, Im a Motorcyclist.

Offline starpower

  • S1000R Pro
  • ***
  • Posts: 332
  • Country: us
  • Bike: '14 S1KR, ZeroS
  • City / Town: Potter Valley
Re: Brake pedal low
« Reply #4 on: Today at 04:27:57 PM »
It is amazing that the fluid could get that contaminated in just 6500 miles. A disintegrated seal?
"The most beautiful things in the world are those from which all excess weight has been eliminated" - Henry Ford I, 1893

 


Recent Posts/Topics