brake bleeding issue

[danny never]

I am trying to get my bike back on the road after my crash at the track last week. the crash busted off the front brake reservoir and the thing that that the reservoir hose slides onto. a friend had a srad 600 master cylinder laying around so i swapped it over to see if it would work. didnt seem to have enough pressure for the calipers, so i took the nipple thing that the reservoir hose slides onto off, and put it on the tlr reservoir. now i cant get the thing to bleed. it seems that the piston kind of sticks when i am pumping it up. any ideas?

what other master cylinders will work?

[dragonbro]

sounds like you got air in the master cylinder. try to blead it right at the master cylinder first, or hook up a mity vac to the calipers and suck the fluid through.....should bring the air with it

[G Money]

Re: brake bleeding issue

How long on average will it take to get the air out? I know it will vary based on how much air is in the system. I'm just curious if pumping with a mighty vac for 10 mins is going to be enough.

[JiffyPark]

Re: brake bleeding issue

Usually after half a bottle of fluid I'm good to go. After 10 minutes I think you would have gone through a 55 gallon drum of fluid... My brakes are always squishy when I'm done so I zip tie the lever over night and by morning they are ready for riding.

[chucks_net]

Re: brake bleeding issue

Also I tap to knock the bubbles free -sort of like tapping on the side of a glass of soda

[Jeff]

Re: brake bleeding issue

These things are notoriously hard to bleed. In addition to the above suggestions some have unbolted the calipers and elevated them above the master cylinder while bleeding to help move the air up and out of the system. Be sure to put something between the pads so you don't push out the pistons if you try this. Another suggestion was to force fluid through the lines from the calipers up. Just make sure you don't overflow brake fluid all over the bike.

[danny never]

Re: brake bleeding issue

Holy thread from the past batman. My original post was from 2003. Btw, cracking the banjo bolt loose at the mc and bleeding it worked.

[G Money]

Re: brake bleeding issue

Holy thread from the past batman. My original post was from 2003. Btw, cracking the banjo bolt loose at the mc and bleeding it worked.

I just wanted to be polite and not start a new thread...

[G Money]

Re: brake bleeding issue

Holy thread from the past batman. My original post was from 2003. Btw, cracking the banjo bolt loose at the mc and bleeding it worked.

So you just loosened the banjo bolt, squeezed the lever, held it, and tightened the bolt up again? I'm just trying to get this thing working like it did before...

Thanks for the replies.

[OldTLSDoug]

Re: brake bleeding issue

Best bet is to spend $35.00 or so and get a Mity-Vax and then it is easy to bleed it.