Finally figured out why my boom angle was off after 3 years on the job

I've been running a Liebherr LTM 1050 for a little while now and kept noticing my boom angle readings were slightly off when I'd double check with my manual inclinometer. Drove me nuts for months. Turns out it was something simple - the little bubble level on the manual backup got knocked out of whack from sitting in the cab in the Texas heat. But the real thing I kept seeing other guys do wrong was not zeroing out their digital angle sensor before a pick. Idk if it's laziness or what but I've watched three different operators just trust the factory calibration and skip the daily check. Yesterday I caught a new guy about to make a 30 ton lift with his sensor reading 2 degrees off because he never did the zero reset after a transport. That could have been a bad day for the load and the rigging. Has anyone else had to deal with guys who think the digital readout is always perfect?

2 comments

2 Comments

vera_campbell20d ago

Oh yeah, that digital trust thing is real. I had a guy on my crew swear his sensor was accurate until I made him climb down and zero it out, then watched the reading drop by a whole 1.5 degrees on the spot. It's like people forget that bumpy haul roads and even just the sun heating up the housing can throw those things off over time, so that daily check isn't just a suggestion, it's the difference between a clean lift and a swing that puts stress on everything.

james_kim20d ago

That "digital trust thing" you mentioned is SO real. I've seen guys act like I'm insulting their grandma when I suggest the readout might be wrong. It's like they think machines are perfect and we're just supposed to shut up and trust them.