Land Rover Repair: Series brake bleeding, plastic syringe, ml plastic

Question
My '67 series IIA brakes will not bleed.  I have bled them many ways, including with the pedal, Vacuum, and reservoir pressure, but still no pedal, only mush.  The MC is good based on a rock solid pedal with the flex lines clamped off, and releasing the fronts seems to give all the pedal drop.  I have bled both the upper and lower wheel cylinders, and still no air out, but a mushy pedal.  My lower wheel cylinders do seem to be sticky and don't travel as smoothly as the uppers, but I don't believe that should lead to mushy brakes.  I thought I knew quite a bit about brake bleeding, but this has me stumped.

Answer
Hi Eric,

that is a real puzzler!  With brakes it either air, leaks or the Master C.  I was once told that me that they had to bleed the MC to finally get rid of that soft pedal.  I know there is also a bleeding sequence for some LR's too.

The best method is the vacuum bleeding systems that some dealers use.  

I have to admit I'm no expert on bleeding. I did my brakes recently and I'm not convinced I got all the air.  Air in the MC is what I suspect.  I'll have the dealer do this when they replace my gas tank (sometime this summer).

Here is what I found from a SIII 109 owner:

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"Pressure bleeding from the bottom up!" Bleed from wheel cyl back to MC. So long as there is no worry about pushing sludge back up to the master cyl...

Get a 60 mL plastic syringe and, after carefully filling with clean fluid and removing all air bubbles, tubed this onto each bleed nipple in turn. Slowly pushed a syringe-full back up each line. Have an assistant watch for air come back up.  Re-adjust the shoes out as far as possible, we now have a good firm pedal.

By the way, before doing this I followed the recommendations of the Green Bible and adjusted all 8 shoe adjusters right off. This allows all pistons to move back as far as possible and minimises the system volume. But you must remember to adjust them back out before trying the pedal, otherwise it'll go almost to the floor, even if there's no air in the system, because of the excessive piston travel.

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Eric, if this does not work, you'll have to ask LR for help on this.  It will save you from pulling all your hair out!

Best of luck,

JohnMc