Tractor Pilot
Silver Member
I got my hydraulic gauge put together today. I bought the gauge online (https://www.surpluscenter.com/item.asp?item=21-1044&catname=hydraulic). After it arrived I went to the local JD dealer to get the male hydraulic quick coupler plug (AM102420) for the gauge and the hydraulic shims (AM875169). I then went to a local hydraulic shop to get an adapter to join the gauge to the coupler plug.
Before the mod, my JD770 showed 2000psi at low idle and 2100psi at full throttle. I installed 3 of the 5 (1 of the thickest and 2 of the thinnest) shims that came in the package. After the mod my tractor showed 2250psi at high idle and 2350psi at full throttle. No leaks. I am very pleased with the results. My model 70 loader will now pick up the front just enough to spin the front tires.
Before the mod, my JD770 showed 2000psi at low idle and 2100psi at full throttle. I installed 3 of the 5 (1 of the thickest and 2 of the thinnest) shims that came in the package. After the mod my tractor showed 2250psi at high idle and 2350psi at full throttle. No leaks. I am very pleased with the results. My model 70 loader will now pick up the front just enough to spin the front tires.
