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any tips for bleeding G2 Hayes brakes?

Aug 13, 2002
75
0
sandy beaches of O.C.
Hello, well Im finally getting the Saber together, this is the first time that Im installing the hydro's and Im having so troubles bleeding the brakes. The brakes that Im using are the HFX mag plus, the manual is just about useless, I have been to the web site and downloaded there directions, they are much better BTW, so I have done the front end and Im now starting the rear. I made a huge mess in the garage, D4 is everywhere, the little hose likes to pop off and then I have to start over. There must be some tricks that you guy's have found to make things a litter easyer and cleaner, do you ever get all the air out in the first attempt, or does it take several times, and another thing I have some troubles with is that sometimes while squeezing the bottle, it seams that something is blocking the fluid, no matter how hard I squeeze, no oil comes out, the brake lever is in the up condition, and the bleed screw is out with the hose it there, the caliper is open, so there should be no restrictions, cant figure it out:confused:
 

Rev.Chuck

Monkey
Apr 11, 2003
117
0
Raleigh, NC
Up at the handle bar I use a coke bottle with the top cut off and a spoke hooked through it hanging off the handle bar as a catch can.
If you have trouble with the fitting popping out have a friend hold the lever end in place.
Put a big loop at the lever end to keep air from getting back in the system. You can even use this for a little back flow to make sure you get all the bubbles out of the caliper.
I don't care what the instructions say (now), gently pumping the lever helps get the air out of the system, this is also easier to do with help. You need to do it while pressuring the system with the fill bottle.
Some times it feels like nothing is happening but you are pushing the oil thru some tiny holes with a less than an ideal presure vessel. This is really true when doing the back brake with all that tubing to fill with oil.
Caliper low, lever high.
Cursing under your breath and getting gradually louder as the evening progresses can help as well.