D5B Hydraulic Pump Rebuild

My hydraulic pump is leaking into the crankcase now that I've re-sealed the tank and return lines properly. I see in the CAT parts book that there are two lip seals that can be replaced, but there are no other parts shown for the pump, except for a "rebuild kit" PN: 9J765. I don't see how you could remove the old seals without splitting the pump apart. The pump body clearly needs to be resealed, but there are no gaskets / seals shown in the parts book.

So, what am I missing. Does the...

D5B Hydraulic Pump Rebuild

D5B Hydraulic Pump Rebuild