1940 John Deere H - Oil change and replacement of temperature gauge

[@TreemanGustaf]

Your H is not a 1940. In mid 1941, they used the 3 hole dash because electric start was introduced. The dash would have originally had a break ot plug in the center hole for hand start tractors. You can check the serial number, and it will tell you the year. One identifier I see is the curve in the governor line, the 1940 line would be straight. The curved line was used to allow room for the starter, and was used on all tractors from mid '41 on. Someone added the ammeter to plug the hole...

[@WaynesOldRustyStuff]

The serial number on this tractor is 15278. It looks like the serial numbers for 1940 are from 10780 to 23653. I suspected that the dash was a replacement and was from a newer tractor that had an ameter. I have been looking for an original dash with only two holes. I cant explain the curved governor vent pipe unless it was also a replacement from a newer H.

[@TreemanGustaf]

@@WaynesOldRustyStuff Yes, your serial number is 1940, so dash, and governor pipe were apparently replaced.