Optimax water pump saga continues...more questions

[dmanmtl]

Ok, after my first stupid post about removing the speedo pitot I have more doubts about what I am doing.

I bought a complete kit for the water pump - included the lower housing, plate, upper, impeller and multiple gaskets and o-rings.

2 questions: I have a couple of o-rings leftover - one went on the bottom of the housing nicely, I have no idea where the others go! Anyone know? These are fairly large ones - about 1.75 inches in diameter....

Secondly - in the attached pic you can see where I put the black washer - around the drive shaft at the top. My old mercruiser had a ring like this. At first I thought it fit inside the top of the housing but I could not get it in there. So I think this is where it goes.

I searched the web high and low to find some instructions on this kit (sierra or mercury original) with no luck.

I appreciate any and all advice.

D

 

[Chris1956]

That thick black washer is called a slinger. You have it in the correct spot. Water pump kits usually come with several Orings, some of which are not used. Ditto for gaskets. Always match the gaskets to the wear plate and upper housing and you will be fine. The thickest Oring that still allows the lower pump to fit into the gearcase is the right one.