Whuntmore's Eagle Project - Flicker (Picture heavy!)

[Whuntmore]

You might also want to check your rear brakes.  Drums can be quite touchy if they aren't clean and adjusted properly.  The adjusted rust up real easy and stick especially when your e-brakes aren't used often.

everything is also new for the back brakes. the drums were machined, all the parts were painted with hi-heat paint, and any moving part has anti-seize to it.  Even the wheel cylinders are new.

So rusting, seizing, or any of that ain't gonna happen.  the e-brake cable gets used here and there, and we cleaned it, and packed it with real graphite.  That ain't gonna seize either.

other then proportioning valve, the back brakes might not have been adjusted properly.  I'm really not exactly sure how to properly adjust them.

[EAGLER]

stuck or bad rear wheel cylenders can cause that effect too.take the drums off so you can have a look on it

[milliard431]

In that picture of the master it almost looks like the rear line is flattened out at the bend. I'm guessing you checked the whole back line for and bends or restrictions. If you bled them then they are not blockes off but could be restricted.

[Whuntmore]

In that picture of the master it almost looks like the rear line is flattened out at the bend. I'm guessing you checked the whole back line for and bends or restrictions. If you bled them then they are not blockes off but could be restricted.

in that picture it does look like they're bent, but it's not.  that's shadows making it look like that.  I haven't checked the whole back lines, but I can tomorrow.  

If the line in the back is restricted, wouldn't that cause them to not respond as well?  Instead of responding too much?  

@PeterM  yup, that's what we did - Got it till it's just grabbing, and then back it off till it spins freely.  So if that's how to properly adjust the back brakes, then it's been done.

I think it's the proportioning valve has either got crap in it (from the rubber rotting in everything else) or it's got problems.  Anyone have a good picture of what the valve looks like?  

I'm probably gonna replace it, and see if that's it.  If that ain't it, then I'm gonna try the rubber hoses next.

[Whuntmore]

stuck or bad rear wheel cylenders can cause that effect too.take the drums off so you can have a look on it

The rear wheel cylinders are new.  So unless I got crappy ones, they shouldn't be the problem, but I can check them.

[Whuntmore]

Ok, so with looking at the diagrams on Eaglepedia, there is a proportioning valve.   It's on the other side, and I've located it on the car.

I'm gonna check tomorrow to see if I can still get one, and I'm gonna change it out.  See if that don't fix it.  If not that, then I'll probably swap the rubber hoses - Actually, I might get them just in case.

[68AMXGOPAC]

I wonder of you could swap the lines at the proportioning vavle?? Maybe they got switched around by a PO ?? or something ?Might be an easy test first.I think those proportioning valves are hard to come by, maybe...

unless the PO changed the lines and fittings, there's no way to accidently switch the lines - Just what rollguy said.

We've tried bleeding the entire system, and that didn't work. 

I haven't gone in yet, been too busy with New Year's stuff, but probably this week.

[rollguy]

I wonder of you could swap the lines at the proportioning vavle?? Maybe they got switched around by a PO ?? or something ?Might be an easy test first.I think those proportioning valves are hard to come by, maybe...

I don't think that would be possible, as the lines will only go on one way.  I had a proportioning valve stick on my cadillac, and just bleeding the entire system and driving it turned out the light and fixed the problem.

[Whuntmore]

I wonder of you could swap the lines at the proportioning vavle?? Maybe they got switched around by a PO ?? or something ?Might be an easy test first.I think those proportioning valves are hard to come by, maybe...

unless the PO changed the lines and fittings, there's no way to accidently switch the lines - Just what rollguy said.

We've tried bleeding the entire system, and that didn't work. 

I haven't gone in yet, been too busy with New Year's stuff, but probably this week.

unless the PO changed the lines and fittings, there's no way to accidently switch the lines - Just what rollguy said.

We've tried bleeding the entire system, and that didn't work. 

I haven't gone in yet, been too busy with New Year's stuff, but probably this week.

[mechanic80]

Just a thought.  Is it possible the primary and secondary shoe positions are reversed?

[Prafeston]

Great thread. Fun to follow what others are doing. Keep up the good work. I egged you!

[Whuntmore]

Just a thought.  Is it possible the primary and secondary shoe positions are reversed?

you talking about the back brakes?  They wouldn't fit the other way... So I'm assuming we got 'em on the right way... plus we followed the shoe placement when we took 'em off (Ok, I think we did - the guy that helped me did most of the work).

But...  It's not impossible we screwed up, I'll have to double check.

Thanks, Prafeston I appreciate that.

[EAGLER]

as i remember there is a shorter and a larger brake shoe maybe they are in the wrong position

[Whuntmore]

yes, but which one faces the front, and which one faces the back? 

Is anyone Absolutely sure?  It's hard to tell in some of the diagrams.

[EAGLER]

the shorter goes forward and the larger goes backward.