Bill, a good mechanic needs his torque wrench gone through at least once a year, with calibrations every 6 months.
I have had people fired for not using a torque wrench, and they didnt work for me. The mechanic argued with me stating you dont need to use a torque wrench on a flywheel and coupler, that his experience was enough to know how tight the bolts should be. I indicated that if the rotating assemblies were not torqued correctly, I would have him fired. Went straight to HR and the CFO to fill out the proper paperwork. During the startup and pre-delivery testing, the coupler fasteners came loose, and destroyed $100K worth of parts and delayed a project for 12 weeks. He was promptly escorted to his truck with his tools.
There are torque specs for a reason, as I am sure you know.
When you hit someone in their wallet, they will listen.
