Water Pump Replacement on 115 Merc.

[75TowerOfPower]

OK so I am going to change the impeller for the first since I have owned my boat and I was wondering if you guys always replace the housing as well as the impeller and wearplates/gaskets?

I see that there are two kits out there, housing and non-housing kits.

 

[narvlebenoit]

Re: Water Pump Replacement on 115 Merc.

If the water pump housing looks good and dont have any groves in it I would just change the impller and gaskets.

 

[Moody Blue]

Re: Water Pump Replacement on 115 Merc.

Agree with ^^^^^^. Inspect the wear plate and S/S cup insert for ANY grooves or wear points. If in doubt, change them.

At the very least, you will need the new impeller and gaskets.

 

[Jacket4life]

Re: Water Pump Replacement on 115 Merc.

What type of gasket goop should you use when doing this? Or none at all?

 

[Jacket4life]

Re: Water Pump Replacement on 115 Merc.

What type of gasket goop should you use when doing this? Or none at all?

 

[Chris1956]

Re: Water Pump Replacement on 115 Merc.

No goop necessary. Oil the o ring in the pump base, as well as the driveshaft, so you don't tear up the driveshaft seal. Oil the impeller housing to make installation easier.