water pump concerns..

[chris650]

Hello everyone. So I installed my new water pump and I have a concern. When I went to put the new pump base in, it sort of went down,but didn't seat against the housing until I tightened everything down. It didn't exactly "pop" into place like I heard its supposed to. Since its my first time installing , am wondering if its common for them to be difficult sometimes? Its fully seated against the gasket and the housing now.

 

[thumpar]

Re: water pump concerns..

List what drive you have and part you used. There are 2 different bases. The upper parts are all the same.

 

[chris650]

Re: water pump concerns..

I have a mercruiser R drive, I do believe. Not 100% sure. It has a pre-load pin on top of the shaft so I used kit 18-3317.

 

[achris]

Re: water pump concerns..

That's the right kit for your gear housing. I've sometimes had that happen.. It feels 'soggy'... As long as it pressure tests ok, you're fine...

Chris.....

 

[Bt Doctur]

Re: water pump concerns..

preload pin base is somewhat flared and MR,Alpha is more of a flat base. the kit number appears correct.

 

[chris650]

Re: water pump concerns..

pressure testing it now. Turned up a custom fitting at work. It hasn't moved from 14psi in five hours. Ive even been rotating the shaft periodically too.

 

[achris]

Re: water pump concerns..

5 Hours!!! .. I give it 30 minutes... Call it done!

Chris.......