Front Brake Issue

[Jeff Rand]

I am having a problem getting my front brakes (both) to release. I just converted over to Aerospace but I was having the problem with the old setup. Any ideas? I am thinking it is in the master cylinder.
Thanks,
Jeff

 

[Gbodynutt]

Did you replace the master cyl. and or the hoses to the calipers?? If you open a bleeder do the rotors free up?? What about if you open the line at the master for the front brakes??

 

[Jeff Rand]

I replaced the powermaster at least 5 times with spare units that I had. I was using the internals of the other units in my housing (my housing was so much cleaner then the spares units). Well it turned out that my housing was defective. I think there are some check valves where the brake lines attach to the housing nad I believe they were not holding. I have the brakes working now but I see air in the reservoir on the pump side. I think I will go to just manual brakes (car is only used on the track) in the future.
Jeff