No brakes! need help quick so i can work!

[burningsky]

i just replaced my brake line going to the rear brakes from the master cylinder and bleed my brakes correctly but i have no pressure at all any help would be appreciated.


2000 grand cherokee
ABS-yes

 

[mcmud]

Gravity bleed them. If you will attach one end of say a 20" piece of 1/8" tube onto the bleeders and then the other into a clean container with a hole in the lid allowing the tube to be held in place, about 1" above the bottom of the container allowing space for the trash fluid to settle while it is sitting on the floor beside the bleeder. I have two mason jars with the tubes stored inside the lid. Anyway you can allow gravity to do the work of getting the air out of the line Or if you desire to speed it up some pour some fluid into each of the containers so's not to suck air back into the line during your pumping of the brake. Of course have enough fluid available and a close eye on the reservoir. Once complete you could allow the fluid to separate and then pour the clear back into your supply. Sounds lengthy but it isn't once you have tried it.

Hope this will help.
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Edit: I find no reference to which Jeep you are working with but I'm a CJ guy and know with that much air in the line that the proportioning valve must be held in place so as to not allow the shaft to shift so to block off the rear leaking that it will sense and will attempt to stop.

 

[SteelHeadz]

Also,do not pump the brake pedal at any time while bleeding. Air in the system will be compressed into small bubbles that are distributed throughout the hydraulic system. This will make additional bleeding operations necessary.

 

[mcmud]

If fluid is place into the container prior and the tube held off of the bottom the poster will be able to. Since the air will rise away from the tube and the sediment allowed to settle, pumping would then be OK, in moderation slow and EZ.