Leaking prop shaft

[tjandoverguy]

Can I get some advice on how to pack this seal ,the bolts are all the way in

[boom23]

This looks to me like a Volvo Shaft Seal. From what I know, it needs to be replaced. There is no packing.

Here is info: http://www.murrayyachtsales.com/wp-c...g_Box_Eng1.pdf

Here is the install manual: https://www.generalpropeller.com/pdf...structions.pdf

There is a YouTube video of someone who replaced it with the boat in the water. You got to be quick...

Good luck.

[sailormed]

Volvo states that it needs to be replaced every 5 years but in some cases the seal is ok after 10 years or more. Wear obviously depends more on engine run hours then days of installation. It does need a regular greasing of the secondary (inner) sealing lips that are not in contact with water and also a "burping" of air after haulout. If not done correctly the ungreased seals or absence of water will lead to premature seal wear and water will pass the seals.

[tjandoverguy]

thanks for the help
i burped it and put greece in and i think its ok

[Sailmonkey]

Originally Posted by tjandoverguy

thanks for the help

i burped it and put greece in and i think its ok

If it’s been run for long without being burped, or if it’s old, it’s time for replacement. Grease isn’t going to be a solution here.

[DougR]

What is posted here is correct, particularly the part about greasing the seal. However, perhaps there is distortion in the photo, or its just my eye, but it looks like the prop shaft is distinctly misaligned with the shaft log tube that the seal is clamped to. The prop shaft needs to be centered within the shaft log tube. This can be caused if the engine is misplaced on its beds. If so, this will cause wear on one side of the lip seals inside the rubber, and the seal will have to be replaced after the engine position is corrected.

DougR