How old is it? If your boat is 2000 and if the seal is 16 years old then you may like to read what Volvo
says about life of these seals
Here why it may leak:
- old or worn,
- engine/shaft out of line,
- dirt on the shaft (e.g. salt),
- prop beating.
Here what you can do before you replace yours:
- make sure you have excellent access to the part,
- SLIGHTLY ease the two bolts, SLIGHTLY!
- turn the fitting 60 degrees,
- TIGHTEN the bolts, I repeat TIGHTEN them,
- start the engine
check for leak,
- repeat till you find the angle when it leaks
Mind working under water
level you do not want to flood the boat. If you ease the bolts too much, water
may push the seal off the tube. I have done this a dozen times on our boat and never flooded her.
These fittings come in metric and imperial. When buying
a replacement, measure your shaft carefully. They are not interchangeable.
Make sure the hull
external 'vent' holes on the shaft assembly are not clogged - this seal is cooled by water sucked in from the outside of the hull
Hope this helps.