mercruiser impeller cover

[lions den]

i have a 88 mercruiser i/o 3.7l 165hp. do i have to take off the flywheel to remove the impeller cover? how do i get the cover off? its loose but doesn't want to come out...its alum. so i don't want to force anything....does the flywheel have to come off ?

 

[cuzner]

Re: mercruiser impeller cover

Hey Lions den.. I've never changed an impeller, but I do know where it is located.If you start at your fly wheel, you have a long to go to get there. Its located in the lower part of your stern drive.Are you sure your not trying to change your water pump?<br /><br /><br /> Jim

 

[kcole683]

Re: mercruiser impeller cover

Are you working on a circulating pump on a 3.7?<br /><br />If so then the harmonic balancer must be pulled off to get the cover off.<br /><br />Try: 3.7 Liter Merc Forum <br /><br />There is alot of merc 470 or 3.7 info on this link.

 

[Bob_VT]

Re: mercruiser impeller cover

There are 2 "pumps" in a 3.7L. The first is the impellar in the outdrive which should be changed seasonally depending on use and the other is the internal water pump that circulates the anti freeze. <br /><br />Whatever you do never hit the harmonic balancer with a hammer it will disrupt the magnets and mess up your charging system.<br /><br />Bob