Brake problems??????????

[wesley bristow]

I'm having trouble bleeding the air out of the brakes on one of my deuce and a halfs that I bobbed. I rebuilt the master cylinder because it was leaking and put new wheel cylinders on the front axle. I didn't put new ones on the bake because they seemed to be okay. I've blead the brakes several times starting at the back and working my way all the way to the air assist and it still will just loose pressure once you let off the brakes and it sits for a minute. The only thing I can think of is that the air assist is bad or it's because I forgot to bench bleed the master cylinder.

 

[porkysplace]

Bleed the air-pac first then the farthest wheel and work back.

 

[wesley bristow]

I'll try that, Thanks for responding!

 

[porkysplace]

Do you have one of these ?
If not it is a low to build one.
Deuce Power Bleeder R4x4 Style

Post #2 of this thread has the order to bleed for a 6x6 (just bypass the part for middle axle on a bobber. It also lists the needed TM's
[h=1]Bleeding Brakes after Wheel Cylinder Replacement[/h]

 

[wesley bristow]

I'll get some help tomorrow and do that process and hopefully that will do it, if not i'll report back. Thanks for the info guys!

 

[brian s]

like above must do air-pac first.
power bleeder a must.
just did mine a few weeks ago this way and all good!!!

 

[wesley bristow]

Well I guess i'll need a power bleeder, still not successful.

 

[brian s]

I used about 60 oz of brake fluid .it took me two times but all is good. Good luck

 

[mark salanco]

I built myself a power bleeder a few years ago, one of the best tools ever.

 

[Kaiser67M715]

IMO a power bleeder is nice, but will likely not solve the issue at hand. I let my whole system gravity bleed, before using the two man system(and once with a vacuum bleeder). still have nice firm pedal.

My whole system was rebuilt, all new lines, rebuilt all the wheel cylinder, and rebuilt master and air pack.

Does the pedal loose pressure with no air? or only loose pressure with air? have you checked inside the drums to verify any seals have not blown out of the brake wheel cylinders? and have you pulled the push-rod boot on the master to verify it is not leaking? and finally, do you get a little pressure back when pumping the brakes(specify if you do, if it was with air assist, and/or without air)

Again it is just my opinion that a power bleeder will not solve the issue at hand. (It is a handy tool though, and definitely worth building)

 

[gimpyrobb]

Have you adjusted the brake pad distance from the drum? That helps too.