Deep sea seal replacement.

[Nauti Fox]

One of mine started to leak, luckily enough whoever had them fitted had the foresight to have an additional seal fitted onto the shaft.

Waited for a good low tide and replaced the seal, did all the preliminary work the weekend before and then again the day before just to recheck...
Slid the old seal back and cut it off with a dremel, surprisingly tough material and took a while, cleaned up the face of the static seal and then came to the only problem which was trying to get decent tension with the new seal, the only way I could do it was using the nylon insert from the old seal to hold it square, fingers at full stretch.....
Lying on your belly on top of the battery box, wedged between bits of pointy metal while trying to reach down to the seal and compress it with the rubber boot and get it all square was a bit of a task....and then get the clips done up.
I ran it for about half an hour to start bedding it in but am still getting an occasional drip so I'll make up a "special tool", a section of mini guttering downpipe which is the correct size, cut in half then clipped together fitted over the shaft and long enough to get a good purchase to set the seal to the recommended compression.
PS, there was a plan B in case it all went horribly wrong.

 

[sharpness]

Good work startline al. I had the same "manecraft" type seals on my last boat. Never had a issue with them but i was conscious of the fact that if they had failed, it would be down to relying on the design of tightening down the emergency red clamp to limit water ingress. Manufacturer literature says if red clamp has to be used, the shaft must not be allowed to rotate, to prevent tearing off the part that attachs to the stern tube.
Good that the previous owner of your boat had thought to attach relevant spare to the shaft. For setting up distance / appropriate seal pressure, the downloads are available in pdf format on their website (link below), but you may already have this info.

http://www.deepseaseals.com/about/

 

[oldgit]

Thanks for taking trouble to take pix. Picture is worth thousand words etc. It is always helpful if you ever have to do a job again, esp. if like some of us, the memory span of a goldfish.

 

[Nauti Fox]

Good work startline al. I had the same "manecraft" type seals on my last boat. Never had a issue with them but i was conscious of the fact that if they had failed, it would be down to relying on the design of tightening down the emergency red clamp to limit water ingress. Manufacturer literature says if red clamp has to be used, the shaft must not be allowed to rotate, to prevent tearing off the part that attachs to the stern tube.
Good that the previous owner of your boat had thought to attach relevant spare to the shaft. For setting up distance / appropriate seal pressure, the downloads are available in pdf format on their website (link below), but you may already have this info.

http://www.deepseaseals.com/about/

Thanks Jon, got the details, I dropped them an email to check what it was made of before I started.....and got a reply!