Rear Brake Switch

Discussion in 'KTM 950/990' started by snarley, Aug 11, 2012.

  1. snarley

    snarley Long timer

    Joined:
    May 24, 2008
    Oddometer:
    1,037
    Hello All,

    I own an 07 990ADVS which seems to have a problem with the rear brake switch. I just recently replaced the switch that goes into the rear master cylinder because the previous one wasn't activating the taillight. Now with the new switch in place, I've bled the rear brake and refilled the master cylinder with new brake fluid, but.. the rear brake will not activate unless I push down REALY hard on the brake pedal ???

    There's no leaks anywhere, no air in the system, nothing externally bent, or damaged ???

    Any ideas ??

    Cheers

    snarley
    #1
  2. norm67

    norm67 Adventurer

    Joined:
    Jul 1, 2010
    Oddometer:
    87
    Location:
    BETWEEN UTOPIA AND TOTAL COFUSION
    do the brakes work? master could be bypassing internally
    #2
  3. Groundhog

    Groundhog Been here awhile

    Joined:
    Nov 7, 2005
    Oddometer:
    188
    Location:
    Kansas Flatlands
    Same with my '07. I almost need to lock it up (or activate the ABS) before the light comes on. I also replaced the switch , bled the system, etc. Brake itself works fine.
    #3
  4. snarley

    snarley Long timer

    Joined:
    May 24, 2008
    Oddometer:
    1,037
    Yeah same, brakes are fine. must be the norm...

    Cheers
    #4
  5. Groundhog

    Groundhog Been here awhile

    Joined:
    Nov 7, 2005
    Oddometer:
    188
    Location:
    Kansas Flatlands
    I just tried yet another switch (not looking forward to getting rear-ended in traffic). This one is working properly.
    #5
  6. RobertMtl

    RobertMtl n00b

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    Aug 18, 2019
    Oddometer:
    1
    Location:
    Montreal, Canada
    Can anyone tell me the part number for the rear brake switch on a 950 adv, I believe it's the same as the 990. I was also told that I can buy a universal one as long as the thread pattern is right "
    M10(10mm)diameter x 1mm thread pitch)
    #6
  7. Salzig

    Salzig Long timer

    Joined:
    Oct 17, 2008
    Oddometer:
    1,238
    Location:
    Cremona, Italy
    Part number is 50311051100.
    #7
  8. Boatman

    Boatman Membership has it's privileges ;-) Supporter

    Joined:
    Mar 9, 2005
    Oddometer:
    13,891
    Location:
    Mill Spring, NC

    Just for future reference, you can easily look up these part numbers at any online site that sells KTM.

    As for a "universal".... Im sure they exist but most likely won't have the correct electrical connector.
    #8