Head scratching, waterpump 115 Merc

[occunknown]

Well I pulled the lower to do a repair and reassembled and reinstalled lower. Checked water pump and all was very good condition. Started up and shifted all gears well but no water from weep hole, checked at top of water jacket and dry, warm air only. Any ideas where I went wrong? Went back together to easy and I should have know something is wrong if I did not have to cuss a little. Please help................

 

[Barnacle_Bill]

Re: Head scratching, waterpump 115 Merc

Did you make sure the woodruff key was in place when you reassembled the water pump?

 

[occunknown]

Re: Head scratching, waterpump 115 Merc

Yes sir I did, had to hold in place with some grease and did a freehand spin and all seemed to work well.

 

[MH Hawker]

Re: Head scratching, waterpump 115 Merc

The only other thing would be the water pump tube is not in place.

 

[occunknown]

Re: Head scratching, waterpump 115 Merc

I hope to get to tare down this week and will post what I find. Thank you all for the replies

 

[occunknown]

Re: Head scratching, waterpump 115 Merc

Well this is what I found. Is the impeller backwards?

 

[79Merc80]

Re: Head scratching, waterpump 115 Merc

I don't know abnout it being backwards or not, but it DEFINATELY needs to be changed as it's developed a set. The veins should stick straight out unless inside the top cover.

Craig

 

[Chris1956]

Re: Head scratching, waterpump 115 Merc

Replace impeller, wear plate and both gaskets.

 

[occunknown]

Re: Head scratching, waterpump 115 Merc

Thank, shall do a complete repacment.