bradw

OK I have used the search function and can not seen to find a answer..
So I replaced MC, Both Calipers, Rear Brakes and adjusted rears with a little drag in them..
I have bleed these thier is no air in any lines and have bench bled MC..
This is all on 89 Cherokee..
My pedal gets hard when engine is off as soon as I start it I have almost no brakes..
Any help would be great
Brad

freegdr

calipers on with bleed screws at the top and you bleed in right order

bradw

yes I have done all that

89Laredo

bad booster

freegdr

try pushing the pedal down keeping pressure on the pedal does it stay or is it creaping down when pressure is applied

freegdr

booster gets hard when motor off then when he starts the pedal goes down that means it working proprley... 30 year automotive experience....

RedRoamer

i had same problem on my 89 after front brake job.

bled and bled with same problem, finally used a vacuum bleeder and that worked.

freegdr

bradw

It is not booster , pedal stays hard till you turn engine on then it goes to floor...
the proper bleed sequence is rr.lr,rf,lf??

freegdr

you have done brake jobs before right

freegdr

right, do the pedal does it creep down

bradw

Yes it just drops down with in a second or two of starting engine.. thier is a little brake pressure
I have done brake jobs before ..

freegdr

no no no with the vechicle not running just push the pedal down untill you feel resistance keep pressure on the pedal is it creeping down do not start it just push the pedal

bradw

no it is a steady pressue

freegdr

the rear brake regulat the height of the pedal when they are adjusted proprely the wheel should spin maybe a half to three quarters of a turn when rotating by hand is this how they are adjusted