Hi,
Have a front disc brake kit installed on a 57 chev.
Rear brake cylinders were seized and now replaced. Now rear drum brakes are locking up first.
Any suggestions?
How do I adjust the proportioning valve if it is that?
Dave
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Hi,
Have a front disc brake kit installed on a 57 chev.
Rear brake cylinders were seized and now replaced. Now rear drum brakes are locking up first.
Any suggestions?
How do I adjust the proportioning valve if it is that?
Dave
Good Morning,
On the proportional valve there is not an adjustment. I would say most likely loosing up the adjuster on the rears would help. sounds like they might be on the tight side.
Hi aaron,Quote:
Originally Posted by CPPAaron
I am assured the drums are adjusted correctly.
Front disc were working fine with seized rear drum cylinders, now replaced cylinders back drums are locking up when brakes pressed.
Either wrong cylinders installed or faulty proportioning valve?
Do the proportioning valves stick/fail often?
Dave
No issues with the valves on these really... I would double check you have the correct wheel cylinders. If the bore is too large this could happen.
Hi Aaron,Quote:
Originally Posted by CPPAaron
Have 1" cylinders fitted to the rear.
Is it possible to have the wrong proportioning valve? Would a disc/disc valve cause this?
Thanks,
Dave
Only if it had a 4 wheel disc prop valve. There should be a "2" stamped on the bottom of it and a rubber cap in the front.
I know this is an old thread, but I was wondering if you found a solution to this. I have the same problem with my '55 chevy. Disc front, stock drums in rear. ThanksQuote:
Originally Posted by nailz77
This is exactly the crappy advice CPP will give you after they send U the wrong parts. Of course the proportioning valve could be defective or incorrect !!!!!
If you have not fixed yor problem yet, you might have to much pressure to the rear brakes. One possible solution is to install a adjustable proportioning
valve and decrease pressure to rear brakes