1984 115 merc water pump

[GHBART]

Every part explosion I can locate and the forums talk about a copper water tube. Mine has a plastic water tube that is about the same size as the water pump housing output. The new pump kit has a bushing in the outlet. I guess that is when you have the copper tube. It appears from what I have read that the copper tube is smaller than the pump outlet and can be inserted through a guide tube and into the bushing in the pump housing. My plastic pipe is the same size as the pump housing output and naturally the same OD as the plastic guide.
Question. Do I use any gaskets or o rings etc or do I just slide the water tube into the pump housing.
Wow! thanks
Bart

 

[cannonford57]

Re: 1984 115 merc water pump

maybe whats happened is the plastic guide tube from the last wp install has "GROWN" to the copper tube...it happens especially when and if the motor has ran hot.your right ,the rubber bushing is suppose to accomodate the copper tube when you ,after it passes through the plastic/nylon line up tube... hope it helps

 

[GHBART]

Re: 1984 115 merc water pump

Well just before I read your reply, I found out how I was screwed up. The seal that the pipe goes into stayed with the copper pipe. When I look at the end of the pipe, the seal with the adjacent guide tube look like one piece and appears to be a plastic pipe when looked at from the bottom. Everything is discolored and it looked like one piece. You are right the guide tube is now frozen to the copper pipe. Any suggestion on how to remove it.
Thanks for your time
Bart

 

[GHBART]

Re: 1984 115 merc water pump

I got the plastic guide tube that was frozen to the copper pipe off as follows.
Spray the top of the top of the plastic guide with a lot of WD40. Spray the bottom of the tube also. There is a lot of grit that gets in between the pipe and tube. Make a tool by bending the end of a piece of 3/4" wide aluminum so that it forms a hook on end. Take a rat tail file and file the hook to make a radius that matches the copper pipe. Hold the file parallel the long part of the aluminum tool. This makes a hook that fits the pipe and has a sharp edge to catch the end of the tube. Insert until you feel the tool pop over the end of the plastic tube. Pull with pliers. Ole!
Thanks again for help. Hope my experience helps another.
Bart