I doubt that they are checked that closely at the factory, and there is a minimum / maximum that is acceptable for shipping, and no 2 tractors are alike. As long as it is in tolerance of plus and minus, out the door they go. Same with redelivery, I doubt that any are checked before they are put into the customers hands.Thanks the first thing I will do when I get setup to do it is check what the pressure is now and it should be set at about 1750 PSI from the factory if it shows that then I will know the gauge is ok.
I’m always very careful when doing something like that and always want to make sure it’s done right.
I did this on HD engines for years because of low oil pressure when the engine was idling.
Thank you for your input much appreciated.