Volvo D4 260HP water pump impeller change Cutwater 28 2019

[Paul&Wendy]

I've watched a few videos about how to change the impeller, but I'm still not sure what I'm looking at on our boat. The raw water pump has no circular face plate that I can find. The sea water intake hose is mounted on the back of the pump. It appears that this rectangular shaped part of the pump is removable with four bolts. Is this the plate that allows access to the impeller? If so, does it make sense to remove the water hose before unbolting, and, does it make sense to remove the water sensor connector from the nearby fuel filter to allow for better working access?

I'm confused because I've never seen a pump with water entry into a face plate. All the videos I watched show a circular face plate with water input and exit on the sides of the pump. I question if the videos showed a D6 engine?

 

[it4llc]

We had a 2020 C28 with the D4-260. There were 6 small bolts with the heads of the bolts on the aft side of the water pump. I would usually lie in the cabin door to change the impeller so worked by feel more than sight with the.