Hi,I just purchased a JD 300 industrial tractor loader backhoe, and the hydraulics aren't working for the loader or hoe. The hoe tries, but is very weak, like there is an obstruction somewhere. The loader doesn't even seem to try...I'm guessing it's too heavy or demands too much pressure. I changed the canister filter, and looked at hoses, etc. Only thing I found is that the tank above the front pump has a 5/8" or 3/4" 90 degree hose that collapses when the tractor is running. I pulled the hose off and briefly ran the tractor, and made quite a mess.....rust protection I kept telling myself. I read in a thread (that I can't find anymore)that JD makes a "better" hose to replace it. It looks like someone used heater hose. Also, there is a small flare fitting on the port on top of the hydraulic tank that someone capped off....creative engineering I'm guessing. Anyone know where it goes? I broke a fitting of some kind on top of the pump that looked like a bleeder....oops. Anyone know what it's for? That is an impressively sized pump! Lastly, I read in an old thread that there is a hydraulic fluid screen near the brake pedal box, but I can't find it. There was a Y that 3 big hoses went into behind the brake box, and I pulled the spring loaded thingie out, and it looked fine. There is plenty of fluid in the case, I checked the dipstick and it is in the acceptable range. Any help/suggestions appreciated. John
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