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Had a main hoist brake fail on a tower crane in Dallas yesterday.
It happened during a slow swing with a 2-ton load, so I just set it down gently and radioed for maintenance. Anyone dealt with a sudden brake failure on a Liebherr 125 EC-B before?
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the_miles20d ago
Damn, glad you kept it cool. Had a brake go on an older 250 HC-L once. Exact same move, slow swing with a light load. Key thing is you didn't panic and just set it down. After that, we found the solenoid valve on the brake circuit was sticking. Swapped it out and tested the hell out of it before putting any real weight on the hook. Always check the electrical side before you start tearing into the brake pack itself.
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julia_carter6120d ago
That solenoid fix works maybe half the time.
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the_oliver20d ago
Keeping cool is a skill I learned after my first brake failure looked like a bad dance move. Your solenoid tip is gold, saved me hours of pointless wrench turning. Electrical gremlins love to hide in plain sight.
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