If you are comfortable with the maintenance routine for a truck-mounted vacuum excavator, you’re well equipped to handle maintenance on the trailer-mounted variety. But one key difference on a trailer-mounted unit is also one of the most overlooked maintenance items, according to Jerry Hatfield, training and warranty manager for Sewer Equipment Co. of America.“The hitch system is probably the one point that doesn’t get enough attention on a trailer unit because you don’t have that on a truck,” Hatfield says. “But it’s critical because that’s what is pulling the unit down the road.”And there’s more than just having a piece
