sbalmos
Well Known Member
I've had Beringer brakes for the life of my bird, and have never had issues bleeding them each year during my condition inspection / winter maintenance tasks. This year, the left brake (surprise, surprise, from what I've read in other threads) just will not bleed.
Normally I bleed with the master cylinders completely unbolted and laying horizontal in the groove between the rudder pedal tubes. I never even thought of leaving the top bolted and just the bottom up until horizontal (thanks bkervaski, in another thread in the archive!). Anyway... This year, the left brake, when I pump the cylinders a few times as they bleed, I can hear bubbles burbling in the cylinders. And there is a large air gap in the bleed line before the fluid starts running again. Even if I didn't pump the cylinders, there are decent air bubbles flowing through, more than I would normally see.
I've checked the caliper, checked the masters, replaced the copper gaskets, about the only thing left is the regulator. What/where else should I try? I have to imagine the air is being sucked in somewhere under vacuum during bleeding, because otherwise wouldn't I see a leak somewhere?
At a bit of a loss this time around. Especially when I can hear air burbling in both master cylinders when they're pumped.
Normally I bleed with the master cylinders completely unbolted and laying horizontal in the groove between the rudder pedal tubes. I never even thought of leaving the top bolted and just the bottom up until horizontal (thanks bkervaski, in another thread in the archive!). Anyway... This year, the left brake, when I pump the cylinders a few times as they bleed, I can hear bubbles burbling in the cylinders. And there is a large air gap in the bleed line before the fluid starts running again. Even if I didn't pump the cylinders, there are decent air bubbles flowing through, more than I would normally see.
I've checked the caliper, checked the masters, replaced the copper gaskets, about the only thing left is the regulator. What/where else should I try? I have to imagine the air is being sucked in somewhere under vacuum during bleeding, because otherwise wouldn't I see a leak somewhere?
At a bit of a loss this time around. Especially when I can hear air burbling in both master cylinders when they're pumped.