i have searched this post and found a lot of related information but nothing that realy defines my problem. so i just replaced the rotors, pads, drums and shoes on my 1987 t4r with the 22re, 4wd. now, not to blow my own trumpet, but i have been working on these rigs recreationally for about five or six years now. i have built four of them, and own three right now. (1 truck and 2 t4r's). i have never had such a problem bleeding the brakes as i have had this time. i have double checked the book and bled in the correct order. i adjusted the ebrake. i have a person helping me with the brakes, pumping and holding the pedal. in the past i have remebered it allways beeing a pita but never this bad. now i am starting to question if maybe my master cylinder has failed. so here it is, if i apply brakes at a normal, slow, even rate like normal brakeing,the pedal will go streight to the floor. if i apply a quick push like emergancy braking it'll stop on a dime and hold pressure about halfway down to the floor board but if i ease of the pedal it will sink right back down again. i bleed the crap out of these brakes and am getting clean fluid through all ports. i am wondering if this is just some trapped air i am fighting or if the master cylinder has coincidentaly gone bad? any input or similar experiance would be greatly appreciated. thanks in advance.
brake bleeding issues.
- Thread starter hopleaf
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unfortunatley i am affraid that you are probably correct. gave it another round of bleeding today. no air, only clean fluid. the only thing i can think of is master cylinder. it was probably on its way out anyways. the brakes on this rig were never great. i attributed that to the worn pads and rotors etc. well when i get around to getting a new master cylinder and getting it installed i will post if that fixed the problem. thanks for the help.
well i replaced my master cylinder and i am pretty certian that was the problem. i did the bench bleed and it saved my but! the amount of work on the bench bleed would have taken hours to try and do on the truck. glad i followed that advice! my M/C came with a kit for bench bleeding. my brakes are a ton better and the truck stops well, but still dont feel quite right. my 1992 witch in theory is the exact same as my 87 feels much more responsive and solid. i think i might need to spend a little more time bleeding the lines or maybe adjust the booster. it works well, it just works a little more towards the bottom of the pedal. thanks to all for the help and if i make any more revalations on this rigs brakes i will update this post. thanks again
85toyrunner
New member
May need to adjust up your rear brakes a little more. That could cause a feeling of a soft pedal