When I change the RW impeller on my SP 135 Lehman
, I always have to remove the water
lines from the pump to gain easy access to the face plate. If you did too, I'd check to make sure you hooked the water
lines back up correctly and didn't get them mixed up. Easy thing to do is to remove the water line from the pump to the oil
cooler at the oil
cooler and see where the water comes out from. Doing this even if the hoses are installed correctly will take care of the only other thing that could be causing your issue which is air in the pump not allowing the water to flow. If nothing comes out, might i suggest you do a little siphoning to get the water flowing. Easy fix either way.