Have gone thru this brake job as thoroughly as I can (or as much as my patience will allow anymore, LOL!)
Rebuilt brake master cylinder (from a Suzuki VS1400), flushed all brake lines, replaced hose and hose clamps from reservoir to brake master cylinder, replaced banjo fitting crush washers, replaced all brake shoes and hardware, plus new wheel cylinders. Even lost the original 245 tires and installed 215's, which go on and come off MUCH easier. Put everything together and adjusted the Lehman actuating arm for the brake master cylinder for a clearance between actuating arm and master cylinder piston set at a gap of .035 (approx. 1mm)
Bleeding consisted of a combo of gravity bleed and traditional bleed and it's just not happening. Have a very low and spongy pedal, which tells me that there's a lot of air still in the system. After researching it, my understanding is that the brake master cylinder should be situated above the height of the wheel cylinders. Measured everything today....
Reservoir sits at 16 1/2 inches at the bottom, 18 inches at the top.
Master cylinder sits at 10 1/2 inches
Flexible hose that routes from master cylinder banjo bolt fitting to under the axle tube is 9 1/2 inches, then it routes over the top of the axle tube and threads into the T-fitting for the lines going to the wheel cylinders.
Bleeder valves on the wheel cylinders are at 15 inches, definitely HIGHER than the brake master cylinder.
After fighting with this job for going on 3 months now (working on it as time allows) decided to buy a MityVac brake bleeder and will be giving that a shot. Also strongly considering unbolting the brake master cylinder and propping it up so's it's above the height of the wheel cylinder bleeder valves while trying to bleed this thing.
Does this approach sound hopeful ?
Thanx in advance