oldnslo
Super Member
I would suggest confirming the shaft seal is leaking before changing anything.
Do you have any method of measuring components accurately? I would suggest dismantling the existing pump if it is the source of the leak and measure the bearing bores, look carefully at any internal seals. That pump could have some sliding plates on either side of the gears. In these plates are seals, if those seals go bad they can allow excessive pressure into the shaft seal cavity. These are typically special shaped seals so you have to purchase a repair kit made for your pump.
Do you have any method of measuring components accurately? I would suggest dismantling the existing pump if it is the source of the leak and measure the bearing bores, look carefully at any internal seals. That pump could have some sliding plates on either side of the gears. In these plates are seals, if those seals go bad they can allow excessive pressure into the shaft seal cavity. These are typically special shaped seals so you have to purchase a repair kit made for your pump.