I've searched all evening and can't find pictures or description of where exactly the test port is to test the transmission pressure on a 1967 4020 Powershift. I've found that with warm oil the pressure should be 150 psi (early models) to 160 psi (late models). I even found one place that said to turn it up further to 190ish for better performance. On my dash gauge it will peg far right when cold but after an hour in the field it will drop below the "safe" line so I'm likely looking to shim it up a bit to keep it in the operating zone. Operation of the transmission is still all normal, and I'd like to keep it that way. New Hygard oil, filters, and cleaned the screen this fall.
Which plug is my test port and which one hold the spring and shims I should possibly be adjusting?
Thanks
Which plug is my test port and which one hold the spring and shims I should possibly be adjusting?
Thanks