There are a lot of mechanics dont understand an electron, I am not one of them, its too mentally challenging in the long run, I am the instant gratification class. Nobody,,, but nobody, well almost no body but maybe a savy engineer with several IQ point advantage beats up on me about fastener R&R, stuck fastener and PM level fastener management from a fleet perspective.
I have had highly experienced men who in reflection come back, said, I learned a lot about that especially from a practical perspective and you made me a beliver, can see it in the time I worked here. We use a lot of used old equipment, keep it a long time.
Most guys I have to keep on about the spray, in my career about one followed that explicit instruction to A t,,, A guy that was used to having a boss but also very experienced in proto, maintenance etc and the day I hired him he asked,,, anything special you want me to do,,, I said,,, spray all the nuts bolts, he said,,, it will be done, never had to mention it again in fact he often said,,, sprayed them up, test fit, etc, all tidy. In about 4 years this guy broke about 1 bolt as I can remember, he would even go so far as to stop, we get together to solve ahead of a problem or take corrective steps, weld out problems etc.
The guy has since moved on, many times I wish I had him back in special circumstances where he is superior to myself, reading technical service manuals etc. He liked to read them and I was paying by the hour, ha but it was effort well spent when he would come off the stool and say,,, I know how it works now, I could get a 5 minute tutorial or summary.
With this in mind I often multiplied the effort by PM servicing multiple units and part orders at the same time. I would say, we got 8, we just service one, one leaking,,, they all 20 yrs old lets do them all.