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Discussion Starter · #1 ·
81 FJ60 brake issue

Could not get the brakes to function unless the pedal was all the way down, so the master was replaced.

It still has the same problem after bench bleading the new reman unit ( from NAPA).

With the power bleeder connected and pumped up, the flow out of the rear lines is very poor. I would expect something other then drips to a trickle.

The flow from the front brakes is not much better than the rear.

It takes four pumps to be able to use the brakes, unless one pushes it all the way down for the front circuit and the fail over condition.

Any suggestions ?
 

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Adjust your rear brake shoes/wheel cylinders for starters.

Then:

Bleed the load-sensing proportioning-valve, bleed the front calipers, and then bleed the rear circuit.

The LSPV has to be bled out, or air will be in the front brake system, and you will need to adjust your rear brake shoes/wheel cylinders, or you will not ever get a good, firm brake pedal and will always have a lot of pedal travel before the brakes " work ".




:beer:
 

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Discussion Starter · #3 · (Edited)
Had bled the LSPV then rear disks ending with the front disks.
Rears are TSM with B. Riveria calipers (Built in E brake, one if the first units).

During the bleeding process with the power bleeder a poor flow was observed at the rear.

When the pedal was tested, three strokes went to the floor before it it felt normal.
After sitting two minutes, it is the same all over.

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The master cylinder was replaced due to poor pressue and it was leaking into the interior.

The front pads are 50% and the rears are 75% or more.

The bleed test where a poor flow was observed was at a connector upstream from the rear calipers.

Checked all the lines along the frame and none are mashed or damaged.
 
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