Thanks for giving me the advantage of your experience with these potential buys Soundguy, I appreciate it.
I did look at the pedals and such for signs of wear that did not fit with the hours shown. The running boards since they have been repainted not so easy to tell but there are no signs of damage or abuse to the sheet metal I could find. No wear on the edges of the running boards and clutch pedal still looks good. Is 55 PSI about normal for these motors? What can I expect to call a good range, 45-60? I still need to pull the dipstick and see what the oil looks like color (clean/new or old and cruddy), viscosity (my worry here is thicker/heavier than it should be might be a sign its been doped up with STP or some such additive to bring the pressure up and/or mask a knock), any signs of water (head leaks?), etc.).
What about brakes. Are these wet brakes or was that just the later 4000 series tractors. How can I tell how much brake life might be left? From what I have been able to find online about the 801 brakes, they appear very similar to drum brakes used on trucks of the same era, so not wet brakes for the 801. And same for the clutch, how much pedal travel is normal before engagement? As far as the clutch is the free play range the same as for an 801 (1-1/2 to 1-3/4")?
Sorry for all the questions. I've worked on plenty of cars from the 60s and 70s, but not tractors of any era. Drove a few many years ago when I worked for a nursery/commercial florist but not much since then. My first were a Super H and a JD model 60.
In the photo above, what are the levers marked 1 and 2 for? Look like hydraulic valve levers to me and I'm guessing that is a valve body there under the seat with the two plugged ports labeled
CROP No 2 and
LIFT No 2
Another question; Were all the 62-64 4000 tractors 12v negative ground? This one appears to be or was it converted. 601s and801s were all 6V positive ground right?