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Its troubleshoots as a faulty hydro booster. The pedal has never been touched and no issues after road testing it several times before I messed with the fluid. Something has blocked the check valve. Fluid surface should have some movement or spout in the forward reservoir section. Minor spouting...

no......I opened all the fittings and let it trickle out and the used a hand vac bleeder.....is that my issue? it was old yellow fluid and about empty

Hey guys. Here is some more info. I didn't remove the hydro booster or master cylinder. The only thing I did was drain the old fluid and refill with DOT5. I line vacuumed each fitting to remove the old fluid till the new appeared. I'm going to adjust my V belt and do the booster test that I...

Need some help. My 87 Humvee is sorta back on the road but with a major problem. After picking it up in December, its finally almost restored. However, after doing a small road test my brakes are locking up. I'm building way too much brake pressure and all 4 disc are locked to the point that it...