This site was very helpful with getting my fuel pump rebuilt and working great, so maybe someone knows about the water pump too!
Long story short, I shredded an impeller vane, stopped pumping water. I dug all the rubber bits out of the hoses and transmission cooler, then replaced the impeller. Still not sucking water up. I’m thinking the seal around the shaft is bad. I took the pump halfway apart before realizing there is very little info on this pump model. I found a replacement front seal for 15$ on ebay, but have no idea how to replace.
Anyone have any experience with this?