Brake help

[stockk5]

Hey everyone, i just swaped in a Dana 60 rear and Dana 44 front. i kept the same calipers. never disconnected them. And just bolted on the Dana 60 rear and bleed them the best i could. It doesnt seem like i can get anymore air out of it. Today i get in my truck and my brake light is on. So i look around trying to see if my fluids leaking anywhere cuz the rear line broke the other day and the light came on.. but there was no fluid coming out anywhere i could see.. My brake pedal basically hits the floor before it engages and stops. What could be messed up in the drums that causes this? Should i just maybe get them power bleed or what? I dont know much about drums either.. so any tips/help would be great! thanks

 

[unclematty]

Time for a gravity bleed!

 

[KTEX]

did you check the master cylinder fluid level?did the pedal go to the floor overnight or from the getgo?

 

[stockk5]

as soon as i put the rear axle in it went to the floor basically. i mean they would work just fine w/ the power for stopping but just hit the floor,, and now the lights on and they dont work as well so i stopped driving it. whats a gravity bleed? does a shop have to do it?

 

[resurrected_jimmy]

gravity bleed = open the bleeders at the wheel cylinder and take the cover off the master cylinder and let fluid just run through. Use a catch pan.

Do you know what shape the wheel cylinders are in? If the seals are leaking no amount of bleeding will help.

 

[1-ton]

You could try adjusting your rear brakes to make the brake pedal firmer. The way I like to adjust my rear brakes is to adjust them up until the brake shoes are tight up against the rear drum, and the drum will not turn. Then I back off each side 10 turns.

 

[yosemitesam37891]

the wheel cylinders may be bigger than stock, maybe the master cylnder needs to be from the same size braking system. you will be able to get the light to reset after the pressure is back to normal by pushing the pedal hard to reset the proportioning valve.

 

[KTEX]

I dont know much about swaping to dana 60s,but the brake system is much larger.are you supposed to swap the proportion valve?also,i have seen master cylinders go bad after bleeding a system.the cylinder bore seal will go way farther than it normally does.sometimes crud will cut or warp the inner bore seal.-if the master cylinder is original i would replace it anyway.

 

[dremu]

Hey everyone, i just swaped in a Dana 60 rear and Dana 44 front. i kept the same calipers. never disconnected them. And just bolted on the Dana 60 rear and bleed them the best i could. It doesnt seem like i can get anymore air out of it. Today i get in my truck and my brake light is on. So i look around trying to see if my fluids leaking anywhere cuz the rear line broke the other day and the light came on.. but there was no fluid coming out anywhere i could see.. My brake pedal basically hits the floor before it engages and stops. What could be messed up in the drums that causes this? Should i just maybe get them power bleed or what? I dont know much about drums either.. so any tips/help would be great! thanks

If the lines have been opened, you feel the need ... to bleed!

When you bleed them, are you pushing the magic nipple on the proportioning valve in, with magic factry tool #J-12345678 or a folded piece of flat stock?

Could be vacuum booster or master, but bleed first.

-- A