y rear brake jam up on wr4?
Posted March 18, 2006 - 02:45 PM
while riding home after a trail ride,
my son wr4 had the rear brake jam up on him,
i had to release some brake fluid thru the nipple b4 the wheel could turn & we could return home,,
i cleaned&serviced the rear caliper & while on the way to the riding area,
the rear brake jam up on him again,
the rear brake disc is not warp,
wat can be the reasons for the lock up???
Posted March 18, 2006 - 03:00 PM
Posted March 18, 2006 - 04:19 PM
Think of it this way..if you had to bleed brake fluid to release the caliper that meant the hyd. pressure of the brake system was up as if the peddal was pushed. Like OM said, if the fluid is boiled from the brake pads dragging OR of the fluid is contaminated with something that boils lower than the proper fluid pressure will build and it'll be just like the pedal is pushed.
I'd drain and flush the system with new fluid too.
Posted March 18, 2006 - 05:54 PM
If it is set too high, your son could be inadvertantly actuating the rear brake in normal riding conditions.
Posted March 19, 2006 - 04:43 AM
tink i will service the rear master pump as well
& adjust the pedal height,
will test it next weekend ride,