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The seventh and last year I owned my business, I spent an inordinate amount of time on maintenance and repairs. The five rigs treated us well with regular oil and filter changes, but ancillary equipment--dehumidifiers, air scrubbers, and air movers, and our big insulation vacs died early miserable deaths if not maintained. We did mostly demo, so the machines operated in hugely dusty environments. Anything with a filter got clogged in short order.
Our 18 hp insulation vac had a 7 ga welded shroud around the insulation impeller wheel, and the crap commonly found in attics--fiberglass, wood, nails and such, blasted right through it over time. Looked like exit wounds from a shotgun shell. I had to weld two steel straps around the perimeter, and they were failing again when I sold. Then I had to do a quickie engine rebuild one day on a job site when it blew a head gasket. Bearings and a new head gasket in an hour, but those hours were expensive with an idle crew sitting there.
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