Comments by "craxd1" (@craxd1) on "Fixing The Largest Construction Equipment On The Planet | Mega Mechanics | Spark" video.

  1. "Weren't planned for removal." Yes, they were, which is why they're there. No matter how well-designed, all machinery breaks down on occasion, which is why things like removable gearboxes and motors are used. The owner of the machine might keep spares on hand as well. Then there is PM, and preventative shutdowns, where things are removed and rebuilt, to keep the machine running. Things, such as bearing housings in the large weldments, if they're worn out, are welded up, on site, and bored out by portable boring mills, where new bearings are then installed. Everything is designed to be repairable, especially on these multi-million dollar machines.
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