1200C rear brake

Discussion in 'Sportster Models' started by bamafan36567, Oct 8, 2013.

  1. bamafan36567

    bamafan36567 Member

    11
    0
    0
    I have a 2004 1200C and am having problems with the rear brake. Sometimes when I hit the brakes they work great, sometimes they work a little and sometimes they don't work at all. When they do work they are great. Any ideas?
     
  2. tourbox

    tourbox Senior Member

    1,310
    68
    54
    Have you recently done anything to them? As in change the pads. They possibly need bleeding. Check your fluid level.
    tourbox
     
  3. bamafan36567

    bamafan36567 Member

    11
    0
    0
    No work has been done and fluid level is fine.
     
  4. bc45

    bc45 Active Member

    211
    0
    1
    When you say they don't work do you mean the pedal is firm or does the pedal go all the way down? sound like maybe the master is starting to go out.
    Try bleeding the system.
     
  5. fin_676

    fin_676 Experienced Member Staff Member Moderator Contributor

    5,277
    133
    156
    Brake fluid should be changed every 2 years or so for best braking efficiency however at 10 years old it may be time for a master cylinder rebuild

    Brian
     
  6. Iceman24

    Iceman24 Well-Known Member

    3,224
    48
    13
    If you don't feel comfortable tearing the brake system apart and re-building...take it in for service. Rear brake function isn't something you want to mess with...it's 70% of your stopping power (at least, depending on how you brake).
     
  7. gator508

    gator508 Senior Member

    2,308
    68
    81
    bamafan36567

    Sounds like you should bleed the system first, you can get a vacuum bleeder for ~ $20, you may have to go somewhere else besides Robertsdale though to get one. I bought mine at Harbor Freight in Mobile. It is a very easy process just make sure to bike is vertical, prop up with a piece of wood under the jiffy stand and make sure you replenish the fluid as you bleed the system. If that doesn't work you may have to go into the caliper or master cylinder, and as Iceman suggested if you are not adept at this then take it into the shop. There is a bike shop on 59 between Loxley and Robertsdale I have not used them but have heard good things. Good luck!

    Oh yea...roll tide!!
     
  8. Jennmarr

    Jennmarr Junior Member

    400
    0
    6
    Rear brakes provide 70% of a motorcycles stopping power? Not according to the laws of physics. The FRONT brake provides 60-80% of the stopping power available (depending on road surface) due to the weight transfer onto the front wheel during braking.
     
  9. Webbtron

    Webbtron Banned

    583
    0
    1
    Just do the brakes. New pads, fluid change, inspect the cylinders & calipers
    [​IMG]
     
  10. jimharvey1

    jimharvey1 Junior Member

    467
    28
    7
    Is there ANY possibility that someone may have added the incorrect grade of brake fluid into the system? DOT4 and DOT5 are NOT compatable. You can screw around rebuilding the master cylinder or you can just replace the thing. They're not that expensive. Just changed one on a friend's 05 1200C. Check the bolts on the rear caliper too. On my friend's, the front bolt and the rubber boot had backed completely out and was lost. Blue Loc-tite is your friend. I am assuming there are no apparent leaks.