I'm a semi mechanic at UPS. Being that New England Motor Freight folded years ago, I'm thinking that trailer is old and has Budd/stud pilot wheels, not modern hub pilot wheels. If you look at the video close, it appears the left front outer is missing on the NEMF trailer. I assume the tandem's aren't slid all the way rearward.
You gotta know what the heck you're doing working on Budd/stud pilot crap and rust has no business being present on anything. You have a stud on top of a stud with a nut and reverse threads the drivers side to be aware of.
In addition to the mechanic screwing up, I question the pre-trip inspection the driver is required to perform.
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