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Old 08-21-2011, 05:06 PM   #1
MikeJones16
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Bleeding brakes

Im trying to bleed my rear brakes but None of my wrenches are fitting over the valve.. Was just wondering if there was a special size or anything. Thanks.
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Old 08-21-2011, 07:20 PM   #2
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Re: Bleeding brakes

You may need different wrenches .........

Seriously .... someone may have put metric bleeders in there. Try your metric and standards before giving up on them. Not being there ... thats all I can suggest.


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Old 08-22-2011, 12:24 AM   #3
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Re: Bleeding brakes

I tired both and cant seem to get a great grip on em. They kinda like to strip easy.
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Old 08-22-2011, 12:58 AM   #4
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Re: Bleeding brakes

vice grips - but be careful =that can strip them also- also use a good penatrating oil to loosen them up - and also try brake line flare wrenches
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Old 08-22-2011, 08:51 AM   #5
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Re: Bleeding brakes

iirc my '73 was 5/16.
Give them a quick wirebrushing to remove rust, dirt and soak them down with penetrating oil. May as well hit the brake line fitting while your there.

I use a 1/4 drive socket to break them loose, sometimes tapped on to get a good fit. If they're rounded off I have used Vice-Grips with moderate success.

IF you get them loose without snapping them off, you should be able to get new bleeders at the parts store (if needed). Now a days, if I snap off the bleeder, I just replace the wheel cylinder. Not worth my effort to try to remove the old one when a whole new assembly is about 10.00.

I haven't tried it, but I think a 5 yr old can snap off brake bleeders without to much effort.
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Old 08-22-2011, 10:39 AM   #6
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Re: Bleeding brakes

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Originally Posted by MikeJones16 View Post
I tired both and cant seem to get a great grip on em. They kinda like to strip easy.
Try using a 6-point socket.
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Old 08-23-2011, 10:43 AM   #7
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Re: Bleeding brakes

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IF you get them loose without snapping them off, you should be able to get new bleeders at the parts store (if needed). Now a days, if I snap off the bleeder, I just replace the wheel cylinder. Not worth my effort to try to remove the old one when a whole new assembly is about 10.00.

I haven't tried it, but I think a 5 yr old can snap off brake bleeders without to much effort.
I'm with donut on this one. You'd better replace the cylinders. They will come with new ones. If the screws are in bad shape, that is also likely the condition of the wheel cylinders.
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Old 08-27-2011, 02:51 AM   #8
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Re: Bleeding brakes

6 point did the trick. Now the fluid is having a hard time reaching the back ( all new brake lines) Should i just keep trying and they'll eventually come out?
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Old 08-27-2011, 03:04 AM   #9
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Re: Bleeding brakes

you might need to take them out and clean out the holes to get them to bleed or just replace them might be best
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Old 08-27-2011, 03:05 AM   #10
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Re: Bleeding brakes

I cleaned them out and poked holes with a needle pin. they should have no problem working. its just the fluid isn't reaching the brakes. I've tried 6-7 times and the fluid hasn't reached through yet.
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Old 08-27-2011, 03:11 AM   #11
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Re: Bleeding brakes

i just did a truck with new lines make sure all of your fittings are tight and maybe just open them up for a while and let the fluid gravity bleed down and the do the normal bleed on them after fluid starts to come out all four corners
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Old 08-27-2011, 08:23 AM   #12
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Re: Bleeding brakes

You have probable "popped" the proportioning valve. This cuts-off the fluid to the end that has lost the pressure balance.
Is the "brake" light on?
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Old 08-27-2011, 10:21 AM   #13
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Re: Bleeding brakes

Brake light is not on. I only took er around the block for the first time. with only the front brakes bled.
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Old 08-27-2011, 10:45 AM   #14
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Re: Bleeding brakes

Completely remove the rear screws, fill the resevior up as much as possible, reinstall the m/c cap and pump the brake pedal with slow strokes about 7 or 8 times. Repeat the process until you get fluid. Once you get fluid, close the RR bleader and bleed the LR (driver's rear) until you get nice clear fluid. Go back and finish bleeding the RR. I had troubles bleeding mine and this process helped.
I did use graivity bleeding to completely flush the system as well. The rears are way more stubborn than the fronts.
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Old 08-27-2011, 10:52 AM   #15
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Re: Bleeding brakes

If i pump the brake with the screw out. Wouldn't that bring air in?
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Old 08-27-2011, 10:54 AM   #16
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Re: Bleeding brakes

Its already full of air. Your main goal at this point is to get the majority out so that you can put the bleeders back in and bleed the rest.
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Old 08-27-2011, 10:55 AM   #17
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Re: Bleeding brakes

alright. i'll go give er a try.
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Old 08-27-2011, 11:00 AM   #18
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Re: Bleeding brakes

You may even wanna crack one of the nuts loose at the union near the front of the frame to see if you can get rid of an air pocket near there.
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Old 08-27-2011, 05:52 PM   #19
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Re: Bleeding brakes

Quote:
Originally Posted by MikeJones16 View Post
Brake light is not on. I only took er around the block for the first time. with only the front brakes bled.
Ok, dumb question....Does the brake light work?
If the front works and the back is full of air, the valve is very likely popped.
You have to get that re-centered first or it will never push fluid to the rear.
Sometimes, as bad as it sounds, you have to open one of the bleeders on the front to relieve the pressure. This can balance things out and get the fluid flowing again.
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Quote:
Originally Posted by Longhorn Man View Post
As for reading directions...
The directions are nothing but another man's opinion.
Learn from the mistakes of others, you won't live long enough to make them all yourself...

Bad planning on your part does not necessarily constitute an instant emergency on my part....

The great thing about being a pessimist is that you are either pleasantly surprised or right.
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Old 08-28-2011, 04:35 AM   #20
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Re: Bleeding brakes

The light probably doesn't work.

And I still haven't got any fluid out the rear. Would one of those vaccum brake things that suck the fluid through work?
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