Pump Cone Oil Bath Mod - Long Term Results

[madtom]

so changed to oil bath at beginning of last season. prepping boat for season two. went to check oil levels in pumps . right pump was good just a little low on oil....the clean green. left one got water in it somehow looks all milky, thinking front seal may have torn.. pulled both pumps and the cones. will refill the good one and rebuild the other as it feels like a rough spot on front bearing. just glad I can do all of this myself lol.

 

[FSH 210 Sport]

so changed to oil bath at beginning of last season. prepping boat for season two. went to check oil levels in pumps . right pump was good just a little low on oil....the clean green. left one got water in it somehow looks all milky, thinking front seal may have torn.View attachment 197358. pulled both pumps and the cones. will refill the good one and rebuild the other as it feels like a rough spot on front bearing. just glad I can do all of this myself lol.View attachment 197359

Did you put new O rings on the cones when you made the switch?

 

[madtom]

I did. I also put a little bit of permatex along the flat surfaces. that part was sealed tight when I pried them off. I had problems out of that pump when I rebuilt it last year. shaft was right at min diameter in seal area behind impeller. had the beginning of a groove there from the bad bearings and seals I pulled last year. PO used the boat in brackish water. may just order a new shaft this go around so I'm not doing this again next year.

 

[FSH 210 Sport]

I did. I also put a little bit of permatex along the flat surfaces. that part was sealed tight when I pried them off. I had problems out of that pump when I rebuilt it last year. shaft was right at min diameter in seal area behind impeller. had the beginning of a groove there from the bad bearings and seals I pulled last year. PO used the boat in brackish water. may just order a new shaft this go around so I'm not doing this again next year.

Thanks for the quick reply…. How many hours on those engines? How is the other shaft? Are you in fresh water now?

I like your plan on just replacing the lot and move forward and not have that thought in the back of your mind!

 

[madtom]

Thanks for the quick reply…. How many hours on those engines? How is the other shaft? Are you in fresh water now?

I like your plan on just replacing the lot and move forward and not have that thought in the back of your mind!

In fresh water now. crab pots in the bay here during the warmer months but far enough upstream in the Potomac that there is not really any salt here. right at 130-135 hours for the engines. Easier to fix it and not worry about it. ordering parts now lol.


Other impeller shaft was perfect. could have just slapped it together but replaced all the seals.

 

[madtom]

so putting it all back together. old shaft had enough wear for the seals not to be seals lol

 

[madtom]

so putting it all back together. old shaft had enough wear for the seals not to be seals lolView attachment 198205

broke down and am having machine shop build me a jig for the front bearing .91 inch /23mm distance to the front lip...... using 2 inch thick Bar stock.

Yesterday was about an hour of messing around to get it right and then it slipped while pressing the rear bearing on.... so about 4 hours of my time with 3 pump rebuilds just to get that distance correct. I was stuck on step one lol.

using jig
1. Press bearing until it bottoms on jig .91/23mm distance is correct
2. put spacer on
3. press back bearing on...
4. freeze in freezer before install in pump to make it easier

If using one time makes this a one and done process it has paid for itself.... of course wont use it until next year...... but I wont be wasting time for a rebuild if needed.

 

[Dixemon]

Please show us a picture of what the machine shop made for you.

 

[madtom]

Please show us a picture of what the machine shop made for you.

so machine shop finally finished my hunk o metal

hopefully it won't be needed until next year

 

[FSH 210 Sport]

so machine shop finally finished my hunk o metalView attachment 199841View attachment 199842

hopefully it won't be needed until next year

So your jig supports the shaft like this? (I made the step go all the way across as I couldn’t figure out how to draw it without it being too busy.) Then you just set the block across the press table with the the engine side of the shaft hanging down and use the bearing attachment 9 to push the bearing onto the shaft?

 

[Dixemon]

So your jig supports the shaft like this? (I made the step go all the way across as I couldn’t figure out how to draw it without it being too busy.) Then you just set the block across the press table with the the engine side of the shaft hanging down and use the bearing attachment 9 to push the bearing onto the shaft?

View attachment 199908

That is exactly how I see it as well. short shaft up towards press, bearing stops when contact with block at precisely 23mm +/- 1.

 

[FSH 210 Sport]

So then you would install the shaft with new bearing on it into the housing, pack with EPNOC grease, slide the spacer on, then press the aft most bearing on the shaft, put on washer and torque nut to specified amount?

 

[madtom]

So your jig supports the shaft like this? (I made the step go all the way across as I couldn’t figure out how to draw it without it being too busy.) Then you just set the block across the press table with the the engine side of the shaft hanging down and use the bearing attachment 9 to push the bearing onto the shaft?

View attachment 199908

Yup. That way the jig becomes the shaft support in the press. assemble the bearing spacer and rear bearing without the 23mm shifting by accident while pressing. I was doing this previously with a wooden block but could never get it exactly to 23mm.... jig has the 23mm down to the lip which is the part in the factory book with the circled b and the measurement.