Front Brake rebuild ?
Posted September 10, 2002 - 08:29 PM
Posted September 10, 2002 - 10:23 PM
Posted September 11, 2002 - 01:40 AM
Either use Doctor's gloves and/or blast the master cyclinder clean w/ brake cleaner prior to your initial fill of the system.
[ September 12, 2002, 04:11 PM: Message edited by: Kevin in New Hampshire ]
Posted September 11, 2002 - 03:02 AM
My front brake will get spongey from time to time, especially after the hard use of a couple of races. I generally have to completely flush my system which takes a complete pint to ensure a completly fresh fluid change. Then everything is great again.
Additionally make sure that the pin in the caliper is smooth and lubricated. After alot of usage the pin will get a groove in it causing the brake pad to hang and tilt a bit making the brake lever feel kind of spongey. Ty-Davis makes a steel pin that is really good at resisting scaring and grooving.
Also check your pads real good. Recently I replaced the rear master cylinders on both my YZ and my WR....Afterwards the YZ rear brakes were perfect but the WR would not lock up even with 200 lbs of pressure on the pedal....Come to find out the rear pads were glazed over from heavy braking and were not grabing the rotor....Some roughing with a med grit paper quickly resolved the problem.
Hope something here will help...
[ September 11, 2002, 06:04 AM: Message edited by: YAMAKAZE ]
Posted September 11, 2002 - 05:45 AM
The loop on the bottom of the line makes the system hard to bleed.
Removing the cliper and bleeding the system with the hose strait helps.
I also have had success with leaving a zip-ty holding the brake lever down. Just wrap a zip -ty around the grip and lever holding the brake on.
I read this in a chopper magazine and it relly helps when you want to get a 100% lever feel.
Posted September 12, 2002 - 12:37 PM
Posted September 12, 2002 - 10:06 PM
Posted September 13, 2002 - 06:27 AM
With the lever pulled in the plunger in the master cylinder is "open," so air that is in the line can, by force of gravity, find its way up the line, into the master cylinder reservoir, and out of the brake system.
Originally posted by sabin:
I cant see how this zip-ty thing is going to help? Please explain.
Posted September 13, 2002 - 11:02 AM
Posted September 20, 2002 - 09:14 PM