67 Series IIA 88 Brake Issues

Anyone familiar with 67 Series IIA 88 brakes? I have replaced the M/C, all 4 Wheel Cyl, all shoes, all rear brake lines, shoe springs, drums turned, pre-bled the m/c prior to installing and still only get brakes after 4 pumps of the pedal. I have bled the entire system wheel to wheel several times from the furthest away to the nearest wheel. I'm not sure where to turn next...any thoughts out there? Thanks in advance, Mike

I'm not that familiar with the rover drum brake setup but it sounds like there is either air/leak some where or they need adjusted a little tighter. I would try adjusting them once and see what that does for you.

Thanks, I did adjust the shoes to just up to the drums with hopes to reduce the travel play, but that didn't seem to work. I'm thinking I need to pressure bleed the system to drive out any air but have not done that before. It runs great...just doesn't stop!

Maybe you got a dud m/c. I bought an Allmakes m/c and my brakes were better before I changed it, the original was fine just the resavoir was cracked. I would try pressure bleeding it first though if you have access to a bleeder setup.

Thanks Brian, already changed out the new m/c that I had bought with another just in case that was the culprit - it wasn't and still does the same thing. I'll try to locate a pressure bleeder and go that route to see if that does it, if not, I'm going to pull out some more hair while I have another beer. This issue is kicking my butt.

There is a system called the Phoenix that works by drawing the bubbles up instead of down. Have you also tried clamping 3 of the four brake lines when you bleed your brake one at a time, Have heard of good results that way as well.

Did you bench bleed the Master cylinder before installing it?

Did the bench bleed on the m/c but didn't clamp off the flexible lines when I bled at each wheel. I'll try that next to see if that works. Right now, no matter what I do, I get brakes on the 4th push at the pedal.

Yeah who knew something so simple could be so difficult. I'm actually having the same problem with my friends Chevy truck all new brakes, wheel cyl, lines, hoses, drums, m/c, you name it on the brake system its all new. We bled it at least 5 times still the problem. He's taking it to a shop that has a bleeder that you put on the bleeder valve of the wheel cyl and pushes fluid from the wheel to the m/c. Im curious if itll fix the problem. Good luck!

take your adjuster plate off and snug up the brake pedal, sounds like you only utilizing a portion of the MC's action. The pressure is there you say, dose it go down after you build it up? that would mean a leak.

The other thing is that the bleeder is on the bottom instead of at the top, therefore you are never able to get bubbles out as effectively with more modern setups. People have made up sections of brake tubing from where the original bleeder is to the top, therefore being able to bleed from the top.

stockfamly wrote:

Anyone familiar with 67 Series IIA 88 brakes? I have replaced the M/C, all 4 Wheel Cyl, all shoes, all rear brake lines, shoe springs, drums turned, pre-bled the m/c prior to installing and still only get brakes after 4 pumps of the pedal. I have bled the entire system wheel to wheel several times from the furthest away to the nearest wheel. I'm not sure where to turn next...any thoughts out there? Thanks in advance, Mike

Do you have the CB or CV type MC? I think the CB type is very hard to bleed - you may have to jack up the vehicle to get the MC level... if you have the CV type you most probably have an air leak somewhere.

YMMV

mike