Found out my old crane's brake drums were 40% thinner than spec

I was going through some old service records my dad left from when he ran this business back in the 90s. Found a note saying the brake drums on our 1985 Grove RT were originally 1.5 inches thick when new, but after I measured them last month they were barely 0.9 inches. That explains why the stopping distance felt off on that job in Portland three weeks ago. Has anyone else checked their older rig's brake drums against the factory spec?

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kaiharris2mo ago

Measured mine at 0.85 and swapped em out right after.

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