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11 replies

No pressure to left rear brake

T tonyamoreMember
Hello All.

I noticed that my 72 Pantera was not braking the way I was so I decided to Change the fluid.
What I found was that I could bleed the right rear but not the left rear.
When I follow the brake line from the front to the rear, it enters a "T" fitting and then feeds left and right to the wheels.
So I am assuming that there is a blockage in the "T" fitting.
Is the any valving in the "T" that would cause this?
Or is it a straight "T"
I did not have enough time to take the fitting apart but that is the next step when I get back to it.
Just thought I would ask before starting in case I run into a problem.

Thanks
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B bdudMember
There are special brake wrenches available which grip the bolt better, they might help in your case. http://www.sears.com/search=br...0line%20wrench%20set
Rather than start at the T fitting, maybe remove the right rear brake bleed nipple and make sure it is not blocked. Try to bleed the brakes with the nipple removed. It could be a blockage from the rubber of the rear caliper flexible hoses, what condition are those? Bend them at a sharp angle do you see cracks?
zr1panterazr1panteraForum Sponsor - SACC Restorations
The rear T has inverted flare seats, not Euro bubble flare seats.

IMO you are wasting your time with the t- fitting if you still have the stock rubber brake hoses.

It is EXTREEMLY commen, as pointed out earlier, that those hoses deteriate from the inside and block all flow to the Caliper. I didn't believe it could happen, (As the pressure could be as high as 1200psi), until it happen to me.

Change the rear hoses if they are the stock rubber ones and your problem will be fixed!
marlinjackmarlinjackThe Machinist #5723 AMARGOSA MACHINE 'Running on Empty- Middle of Nowhere'
...I Agree with Bdud!!

It's called a 'Flare-Nut Wrench'.

If you don't have one, don't even Attempt trying to loosen the Nut! You WILL round it off, Guaranteed!! with a 'Open-End Wrench'.
And Vise-Grips DON"T work!
But, you'll have to Replace the Metal Line Anyway!

You'll need a 7/16" or 1/2" size.
If you do not have one, Go Buy One!
And Soak the Nut in a little WD-40...just My 2 Cents.

...I also agree with ZR1, My Money's bet on the Rubber Hose Being the Problem! You'll still need a Flare-Nut Wrench!

Having the Correct tool, gets the Job done Right, the First Time! And it Makes the Job go EZ.
bosswrenchbosswrenchMember
Besides the disintegrating OEM hose problem (black colored fluid is usually from carbon black out of the rubber), I've seen calipers that could not be bled due to hard varnish plugging up ports. It had been so long between servicings, I had to DRILL one guys bleeder screw to bleed a rear caliper! The owner had never noticed a problem....

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