3545 hydraulic problem

Hi all , am knew to form , looking for help on my 3545 ,
The the lift and hydraulic leavers were stuck together , have them now freed , but a leak is now coming from under the tractor , from where the draw bar is held on , the leak only happens when pumping , when the lift was raised the hydraulic leaver was pumping , so now the leak , Is acess to the pump under the tractor and if so can I just drop it out or do I have to draw out the shaft

Hi
The hydraulic pump are mounted on the round plate under the backaxel and drops rigt out, for a leak to okure only hwen pump is working it suonds plusible the seal betven the plate and the backend housing is failed but it can be the plate is self that is cracked in the inturnal oilchanel.
Bjarne

Thanks a million for help took down pump to day and the o ring was in bits , put a new one in and resealed the plate , all back now and working , thanks for help