have 1992 chevy truck can not get back bracks to work properly?
i have replaced rein lines from the rear to the front it has new cylinders in rear,new shoes,drums are good, i have put 4 new slave-driver cylinders on it ,new booster.i have taken the abs off of it,it had the rear wheel abs. it has been bleed properly many times. the front brakes travail great NEED HELP BAD been working on this off and on for 3 months all new parts are new not rebuilt, portioning valve has been replaced to. my email lonerider@insightbb.com aid help
more info guys on this 1992 truck what we have done to it.we have plugged the lines off at the wheels and u cant move the push at all.when we only plug the the back brakes u can only move pedal have way front brakes work great.when we plug off fronts pedal only moves half way. but when we off up front and back pedal goes all way to floor and u can pump the pedal 3 or 4 times to get some pedal but hwen u quit it just goes to floor we are bleeding brakes properly each time doing this.we are wondering if the abs has to be on this truck to run them .i took the abs off because it wasnt working it very expensive for this old truck. i have a 1996 monte carlo that i done the same affair to and had to problem doing this to it . email me with any info u have if u can thank you guys.
i be informed you have probably heard this before ,but the only thing it can be ,and i speak from experience is the proportioning valve,anytime you cleave to the pedal you run the risk of off setting it,and that sounds like what has happened here,especially if you pressed it with all the bleeders closed on it,and I'm unfaltering you did,open the front bleeders and hit the brake it should center it again,good luck.,,PS put a line on the bleeders to pilot where the fluid goes to.
