temperature gauge

Hi all, so I mainly operate my tractor for a small composting business I run. I recently had a problem with a weird sound coming from the tractor which would disappear when I would operate my front loader. Turned out that my hydraulic filter was really dirty. So after a clean, the sound...

I wonder where to best measure hydraulic oil pressure and temperature on a 2.5t digger. General wisdom says oil temperature is most accurate at oil return. Where should I measure pressure? I reckon there are different places, but pressure would only show when the particular cylinder is operated...

Can you put a temp gauge on a Farmall Super A? If so, how?

I purchased a 5520, the instrument cluster is not working. I sent it to be tested and it works fine. I've had a mechanic work on it extensively with no success. The cluster has rpm, fuel gauge and temperature gauge. I'm considering just adding aftermarket fuel and temperature gauges. I'd love...