I did have the motor and the pump rebuilt about a year and a half ago....I was thinking about taking it back to the same pump shop and having the seals replaced, but if it is something I can do myself I rather save the time and money.
Well, if you had the pump rebuilt, and it lasted 18 months to be at this point in time, you could pull it and take it back to them again. The question might be, is the condition of the pump compromised and will the new repairs last as long or longer. They will do the same repair probably for the same or similar cost.
Or, you can do as I suggested, pull the pump out, open the wet end, remove the impeller, now, you’re looking at the pump seal. Simply replace it and reverse the procedure. Although this may sound simple enough to accomplish, that can only be determined AFTER you have successfully accomplished the repairs.
As for the time and money, by the time you add the cost of the previous repairs, the time it will take you to accomplish this repair, get the right parts for whatever is needed to complete the job, the period of time your tub is out of service, it just may be cheaper to call your dealer and have him accomplish this for the cost of a trip charge, the new pump, and probably 30 to 45 minutes of labor for him to get the job done.