I just changed by hydraulic fluid and pulled the bleed plug from the pump but no oil comes out. what should i do? it is a john deere 190e excavator
Apply a slight amount of air pressure at the hydraulic tank fill plug to help push the oil up and out the pump bleed port.
Do you have the cap off of the tank? The oil wont flow if the cap is on. you can also do as Diesel dave suggested.