I recently bought a Series 1 (SN 17???) D17. Today I put an Allis model 170 loader on it [with trip bucket], which had come off another D17. I hooked the loader's hydraulic hose to the rear-facing transport connection under the seat, like the previous owner had. When I raise the loader, it only comes off the ground about an inch, then stops. It looks and acts like the hydraulic fluid is low, so I want to add fluid to the system.
BUT, I don't know what the previous owner of the tractor used as hydraulic fluid. I've heard some people say they use 10W oil, some say basic farm hydraulic fluid, some say automatic transmission fluid.
My question is NOT "what is the best thing to use in the hydraulic system?", though that would be good to know.
My question is, since there is no way for me to know what's in the system right now, what should I top it off with? Or do I need to drain the whole system and make sure there is only one kind of fluid in it? Would it hurt seals or anything if the wrong fluid, or a mixture of fluids, was put in this system?
Thanks guys.
BUT, I don't know what the previous owner of the tractor used as hydraulic fluid. I've heard some people say they use 10W oil, some say basic farm hydraulic fluid, some say automatic transmission fluid.
My question is NOT "what is the best thing to use in the hydraulic system?", though that would be good to know.
My question is, since there is no way for me to know what's in the system right now, what should I top it off with? Or do I need to drain the whole system and make sure there is only one kind of fluid in it? Would it hurt seals or anything if the wrong fluid, or a mixture of fluids, was put in this system?
Thanks guys.