How to change seal and water pump bearing?

Gracian for this located,
my question is how to deassemble the water pump of a Dodge Stealth, the pump is very similar to that used by some Voyager, Cirrus and Mitzubishi Montero, they are for the 3000 engine, it turns out that it has a leak of the pump and the bearing feels very dry, I want to change it just like the seal, but the pulley apparently enters only pressure, and the propeller does not With a string or pressure, please if any comrade has knowledge in the disarmament of bomb I learn about how they are repaired, in advance thanks,

Friend I drop the pump of that vehicle, but usually if they are pumps that are coupled to the viscoso, the strap of elements is disassembled and the bolts of the pump, usually if the pulley does not bring bolts to be armed, then it is a single piece and sells complete.

Thanks Comrade for responding, it turns out that the disarmament is already part of the synchronization system so it is something delicate since its size is specific, and it is mounted under pressure on the arrow, the driver is also under pressure, the mechanical seal is in a piece and what is costing me to get work is the bener that comes in one piece with the arrow, I live in the city of Mexico and it is a bit rare Japanese, greetings.