A few questions about brakes

[abcus]

I tried to follow a few threads,buy still have questions.

 

I have a  front passenger side brake that locks up.  The car is a 89 gl wagon 4wd.standard trans.

 

I installed a new mc and bench bled it beforehand, I installed  a new hose to the caliper, a new caliper

and pretty much the brake fluid is new altho I did not flush it.

 

The rotor does not have excess play in it 6 to 12 and 9 to 3 o'clock.

 

The hill holder  cable is disconnected from the clutch fork.

 

When cool,the driver's wheel turns more freely than the passenger's wheel. The emergengy brake

does not seem to cause any wheel to lock up when applied and released.

 

Do proportioning valves tend to go out on these cars? Is there a test for those valves?

 

After removing the caliper I moved the emergeny brake arm on the old caliper and brake fluid squirted out.  Why would the

action of the emergengy brake have ANY effect on the hydraulic system?

 

Thank you,

abcus

 

[ivantruckman]

a brake can lock up  mechanically  or hydraulically ,  push the brakes  and then  if the wheel  locks up  ,loosen the bleeder screw,  if   the brake releases itshydraulic  ,  I have had  rebuilt calipers that have been bad and the piston seizes  .     if the brake  locks up  after the bleeder screw is loose  than the caliper pins  need to be cleaned and lubed .  or the piston is stuck.

Edited May 21, 2015 by ivantruckman