I have a 1998 D721, the left hand Hydro pump appears to be leaking at the shaft for the sheave for the belt. The sheave has a nut on the end, how do you remove the nut? Can I put a rachet on the nut and tap it with a hammer or are there gears inside the pump I would damage? I've worked on my skidsteer in the past but not the grasshopper, is there a gasket that's easy to replace or am I better off once I remove the pump to take it to the dealer and let them repair? I appreciate the advice and help. Greg
