89 Seadrive 140hp - Impeller Replacement

[seabird89]

Hi, thanks for the replies. I have misplaced my service manual, so sorry for the questions.

I have removed the lower unit and disassembled the pump housing and impeller. The blades were curved, but luckily the impeller and housing were still in one piece.

I purchased the kit with just the wear-plate, impeller, and various gaskets and o-rings. I was planning on using the OMC gasket compound on the plate gasket and the housing gasket, do I need to put anything on the other o-rings?

Also, does anyone know the torque requirements for the pump housing and the lower unit bolts?

Lastly, I noticed the last guy used what looks like clear silicone to seal the upper and lower units where they come together, should I do the same or use something else?

 

[southkogs]

Is a Seadrive a sterndrive or an outboard? I think we may have you in the wrong spot.

 

[seabird89]

Seadrive outboard.

 

[jerryjerry05]

NO sillycone between the units.
​And you really don't need any sealer on the pump gaskets.
Some grease on the impeller vanes.
Yes it's an outboard.

 

[seabird89]

My kit came with two o-rings. The smaller one I put between the wear plate and the impeller, under the impeller. I am not sure what to do with the large one. The part number is (O-Ring) OMC 310967, 310585, described as [h=3]O-RING, Driveshaft To Crankcase.[/h]
Crowley does not show the small one going where I put it, but they also don't list that part on the diagram.

http://www.crowleymarine.com/johnson-evinrude/parts/UH632333.cfm?mdl=HGZBC7

Does this go near the top of the drive shaft next to the splines? Or somewhere else?

I am wondering why the grommet of impeller housing does not fit tight around the drive shaft and thinking that maybe this o-ring goes there, although I think it would just spin with the drive-shaft.

Another option would be on top of the impeller as there is a recessed area in the impeller next to the spline.

I was trying to follow this video, but I don't see her put a second o-ring on.

https://www.youtube.com/watch?v=6WZMArnU48c&spfreload=10

 

[seabird89]

I figured it out, the larger o-ring goes under the impeller and the smaller one goes in a groove on the shaft just below the splines that engage with the flywheel. This video helped.

https://www.youtube.com/watch?v=kYgwzSIn0Ug