Shaft seals

Repacking tips. By all means use the new Goretex Teflon impregnated packing.

Get enough to cut at least four overlaping rings per seal. Perhaps only three will fit the first time, but you'll have a spare ready to go should you need to add one later due to compression. After removing the old packing place each ring in with the overlaping cut at least 120 degrees away from the previous one so as to not have two splices on top the other. Do not just put a coil around the shaft and drive down on it. If the seal tube will take four rings great use them and screw down the seal. Water will be running in the whole time so you want to work quickly in tight quarters so that why you cut your rings first. Tighten down until the water stops and then one more half turn. Tighten the locking nut (on prop shaft seals there should be one.) Next go for test cruise with a mate that can handle the helm and if possible you observe the seal under power. If the dripping starts, come off plane and out of gear, tighten another half turn. Repeat until the seal is dry under load and is cool to touch when dropped out of gear.

If you get a leak again, repeat this process and if you run out of room to tighten down any more put another ring or two in. Why is this necessary? The log tube maybe slightly larger than the packing rope dimensions and will flatten more than expected and will need to be compressed by adding another ring or two.

When I first repacked my rudder seals (out of water please) I found the factory had generously used one entire ring for each rudder seal! I'm lucky they even tried to use packing I guess. SR is great but not perfect!
 
Sorry about the size of this pic but I wanted to show detail. I took an old screwdriver and modified it with a dremel tool. I'm going to try this when removing the rudder post packing material (one of these days!).

Packingremover.jpg
 
You're correct. Dripless seals-well, they're not supposed to drip. They need to be serviced or replaced. Your boat is from the same era as mine- you may have the Tides Strong Seals. If so, you might get lucky and have a spare seal already in place on the shaft ahead of the seal. If you have the spare seals in place, you don't need to haul-out to replace them.

You'll need to post a pic or find out what you have for specific advice.

Good luck with that. I just replaced my Tides seal with the spare seal on my 02 310 V-drive. Launced today it leaked worse than before. Now I'm back on the hard and probably have to pull the shaft.
 

Forum statistics

Threads
113,229
Messages
1,428,966
Members
61,120
Latest member
jingenio
Back
Top