F4i Front brakes Locking up problem
#1
F4i Front brakes Locking up problem
i changed my front master back to a stock one after i wrecked and broke the zx6r one. bled it and everything iand it seamed like it worked good. took it for a test ride and it worked fine. next thing the front brakes slowly started engaging and it locked up all the way. it was stuck. the only way for me to release it was to open up the bleeder valve to let the fluid out. and its free again. if i use the front brakes again itll slowly lock up again. whats the problem? i need help! thanks
#6
Re: F4i Front brakes Locking up problem
You must have air in the lines. The Way some of the racers told me to bleed a system is break open the banjo bolts and bleed them from there as well and the bleeder valves.
#7
Re: F4i Front brakes Locking up problem
Air in the lines won't cause the brakes to lock up it willjust make them spongy. Swap out the master and see if that fixes it. Sounds like the master isn't letting the system bleed off pressure and let the pads get pushed back out by the rotors.
#9
#10
Re: F4i Front brakes Locking up problem
Brake fluid doesn't expand that much.
Air in the lines won't cause the brakes to lock up it willjust make them spongy. Swap out the master and see if that fixes it. Sounds like the master isn't letting the system bleed off pressure and let the pads get pushed back out by the rotors.
Air in the lines won't cause the brakes to lock up it willjust make them spongy. Swap out the master and see if that fixes it. Sounds like the master isn't letting the system bleed off pressure and let the pads get pushed back out by the rotors.
#11
Re: F4i Front brakes Locking up problem
Air expands when it gets hot. The fluid get hot from breaking hence the air gets hot. You are right about the spongy feeling but the master only puts pressure into the system when the lever is pulled. The only way the pads whould be against the rotors is if the two way in the master is not relieve the pressure.
#12
Re: F4i Front brakes Locking up problem
so i gotta bleed it again. clean the rotors. what about the pads? what did your buddy do to fix it?
Last edited by undercvr_skank; 01-19-2009 at 03:15 AM.
#13
Re: F4i Front brakes Locking up problem
Well I was saying make sure theres nothing on the rotor first. This may not be the problem but it only takes a second to check. Yeah you need to brake clean the rotors and pads. You should take the pads out of the calipers but if you could probably get by with spraying eveything down.
#14
Re: F4i Front brakes Locking up problem
Air expands when it gets hot. The fluid get hot from breaking hence the air gets hot. You are right about the spongy feeling but the master only puts pressure into the system when the lever is pulled. The only way the pads whould be against the rotors is if the two way in the master is not relieve the pressure.
#16
#18
Re: F4i Front brakes Locking up problem
lol...i dont know when i posted that. probably when i was in a rush this morning or something. yeah i was going to mess with it this weekend. it started snowing here. waiting for my buddy to be free so i can use his master. been so busy with work. im gonna clean the rotors and pads also. ill let you guys know how it goes. thanks for all the help.
#19
Re: F4i Front brakes Locking up problem
finally go my hands on a master. same one i had when i wrecked. 08 zx6r. and it works fine now. i only rode it around the block so far and its just fine. ill ride tomorrow for a bit to be sure its all good. thanks guys!
#20
Re: F4i Front brakes Locking up problem
![LOL](https://www.stuntlife.com/forums/images/smilies/LolLolLolLol.gif)