I pulled my pump today on the Volvo MD17C. I pulled it mainly because of the neglect of previous owners with a lot of rust underneath and going down the engine. I'm cleaning up all the rust and coating with corroseal and will repaint. Also have to do the saildrive ring. But I digress....I took the pump apart and three of the screw heads twisted off. The shanks came out easily by hand!! I bought this pump two yrs ago as a whole pump assy and I checked the screws before install..there was a little salt under the output fitting today. The output is a copper tube (typical volvo) that slips into a rubber seal and inserted into the pump. The other end goes to the heat exch and secured half way up to the timing case cover. If it's not just right, it will weep. This last summer I was tracing some other pesky water sources that I couldn't find and finally discovered that condensation forms on this copper tube and runs down to the pump and drips.. Hence a lot of the source for rust over time. (34 yrs)..I think I'm either going to buy another pump with threaded fittings or get the nipples and solder them in and go hose. I'll have to do that to the heat exch also. I might go whole hog and get this exch off the engine... That will take some engineering.....
