F4i - Main Forum Main F4i discussion board

STILL having front brake trouble...please help!!

  #1  
Old 06-23-2011, 06:27 PM
Member
Thread Starter
Join Date: May 2011
Location: Sevierville, TN
Posts: 45
Default STILL having front brake trouble...please help!!

About a month ago I had posted that my front brakes were locking up slowly while riding eventually to full lock. Well I took apart the calipers, cleaned everything put it back together, same thing. Then I thought well, maybe the MC isn't working correctly and relieving line pressure, picked up a good used MC and still, same thing. Leaving only the calipers, I picked up another set of calipers, both sides including lines all the way to the MC, known to be in working order. Got it all put together, took it for a ride tonight and it's still doing the same damn thing!!! I don't understand what else it could be.

They work fine for a few minutes and then the lever slowly gets stiffer and stiffer, luckily I took the trusty 8mm wrench so I could relieve the pressure while I was riding and make it back home without waiting for them to slowly release.

Any ideas fellas? This is driving me NUTS!!!
 
  #2  
Old 06-23-2011, 06:50 PM
Member
Join Date: Feb 2011
Location: Stamford
Posts: 79
Default

Lever??? have you changed it >??
 
  #3  
Old 06-23-2011, 07:01 PM
Member
Thread Starter
Join Date: May 2011
Location: Sevierville, TN
Posts: 45
Default

Yeah, it's brand new. Basically the whole front brake system has been changed out and it's still doing the same thing.

The only thing I can think is that maybe the lever is keeping too much pressure on the MC plunger??
 
  #4  
Old 06-23-2011, 07:51 PM
supersnake83's Avatar
Senior Member
Join Date: Oct 2008
Location:
Posts: 533
Default

You said you basically replaced everything. Have you replace the master cylinder too?
 
  #5  
Old 06-23-2011, 08:22 PM
Member
Thread Starter
Join Date: May 2011
Location: Sevierville, TN
Posts: 45
Default

Originally Posted by supersnake83 View Post
You said you basically replaced everything. Have you replace the master cylinder too?
Yes, this is what is driving me nuts. I've replaced the master cylinder, brake lines and calipers. There's nothing else to the brake system, that's what I don't understand.
 
  #6  
Old 06-23-2011, 09:21 PM
tyfrist's Avatar
Member
Join Date: May 2010
Location: Btown INDY
Posts: 67
Default

adjust the sensitivity at the brake handle. It may be too tight and so the brake is engaged when it's not.

It's that little spinning wheel, but you may have already tried that since you sound mechanically inclined
 
  #7  
Old 06-23-2011, 09:50 PM
jeffjones's Avatar
Welcome Crew and May 2012 Ride of the Month
Join Date: Aug 2010
Location: Kitchener, Ontario
Posts: 1,564
Default

there was a post like this awhile ago and the problem was an ebay brake lever.
Do you have the ebay specials?
 
  #8  
Old 06-23-2011, 09:52 PM
Member
Join Date: Jan 2011
Posts: 65
Default

I'm having the same problem, but mine never gets tight enough to lock up my brakes. I can usually feel it when it starts to happen and all i do is pull the lever out. I havent really tried to fix it yet but my guess is that the lever i have either needs to be greased or filed down because it isnt being aloud to swivel away from the mc plunger far enough to disengage. It was pretty tight fitting the lever into its spot. I might get to it tomorrow....i'll let you know how it goes but i would start by checking the lever if you have replaced everything else. not trying to thread jack, but One question i have...how stiff should my front break be? Whenever my bike sits and i get back on my brake lever is always mushy. After riding it tightens up.
 

Last edited by 05CBR600F4i; 06-23-2011 at 09:55 PM. Reason: add more
  #9  
Old 06-23-2011, 10:12 PM
Member
Thread Starter
Join Date: May 2011
Location: Sevierville, TN
Posts: 45
Default

Jeffjones...yes, it was an ebay special. I am thinking of ordering a different one. Suggestions without breaking the bank?

Could I possibly try filing down the area where the lever contacts the plunger and see if that makes a difference? I've already dumped over $150 into the brakes and it's the same as I started so I don't want to dump any more than is needed.
 

Last edited by coolcloo; 06-23-2011 at 10:15 PM.
  #10  
Old 06-23-2011, 11:08 PM
LasVegasHarley's Avatar
Senior Member
Join Date: Nov 2010
Location: Las Vegas, Nevada
Posts: 117
Default

on the stock lever, the adjustment wheel has a notch that must line up with arrow on the lever. If it is not lined up the adjuster will not lock and vibration while riding will cause it to turn out of adjustment.
 

Thread Tools
Search this Thread
Quick Reply: STILL having front brake trouble...please help!!


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.