Ok my Kubota B2400 HTS 4 wheel drive has develop a leak at the top of the power steering shaft I order new seal but I cant seem to get it apart to install a new seal took the unit to Kubota dealer and they took were at a lost on how to get it apart I know that they were three diffrent one used in these tractors my seail on the tractor is B2400HD74773 the only numbers that I can find on the strreing unit are PQC1565 and B926014 these were on a plate on the unit any help on how to install this seal would be greaty appreciate