Stuffing Box & Packing Material Choices

vanilladuck

E32-3 / San Francisco
Yah, 1/8" is what I bought - although, I haven't replaced the flax/stuffing yet. I'm waiting to see if my adjustments hold back the drips (and let enough through when underway)
 

Second Star

Member II
That locking nut is a nasty piece of work. If you do get it free it is miserable to get it to lock the packing nut again! The space is small and awkward and with the cleaning of threads and application of various lubricants it is generally rendered "easily" movable. It doesn't help, as you say, that the shaft in forward unscrews the nut assembly. I had so many issues of the locking nut coming free that once a seal had been created (another miserable job) I fitted a hose clamp around the packing nut such that the "tail" of the clamp pressed on the boat bottom resisting the tendency of the nut to turn with the shaft turning. Out of the context of your boat, the job is easy .. as per Mainsail's site!
 

Alan Gomes

Sustaining Member
That locking nut is a nasty piece of work. If you do get it free it is miserable to get it to lock the packing nut again! The space is small and awkward and with the cleaning of threads and application of various lubricants it is generally rendered "easily" movable. It doesn't help, as you say, that the shaft in forward unscrews the nut assembly. I had so many issues of the locking nut coming free that once a seal had been created (another miserable job) I fitted a hose clamp around the packing nut such that the "tail" of the clamp pressed on the boat bottom resisting the tendency of the nut to turn with the shaft turning. Out of the context of your boat, the job is easy .. as per Mainsail's site!
I've had 4 different stuffing boxes on different boats and have never run into this problem. I makes me wonder if you are having something unusual going on with yours, though I'm not sure just what that would be. Maybe others can weigh into help gauge how common this might be.
 

goldenstate

Member III
Blogs Author
That locking nut is a nasty piece of work. If you do get it free it is miserable to get it to lock the packing nut again! The space is small and awkward and with the cleaning of threads and application of various lubricants it is generally rendered "easily" movable. It doesn't help, as you say, that the shaft in forward unscrews the nut assembly. I had so many issues of the locking nut coming free that once a seal had been created (another miserable job) I fitted a hose clamp around the packing nut such that the "tail" of the clamp pressed on the boat bottom resisting the tendency of the nut to turn with the shaft turning. Out of the context of your boat, the job is easy .. as per Mainsail's site!
This is interesting. After another haphazard, unsuccessful go at freeing the locking nut yesterday, I decided I may just leave it alone in the nut's current 'fixed' location. I can still slide the adjusting nut off to get the packing gland out.

Thanks for your feedback.
 

vanilladuck

E32-3 / San Francisco
It literally took me 5-6 separate days of wrenching 'medium gently' to loosen the locking nut . Tom, it sounds like you're in the same mental state of mind I was in half way through. Just keep working at it little by little. Enough Kroil/PB Blaster, wrenching and it will eventually come loose. Did you happen to try backing the packing nut off a few threads and squirting some freeing oil into the normally hidden side of the locking nut?
 

1911tex

Member III
My problem is still very frustrating...can't contort myself enough to get down in the bowels to get a good grasp on either with a wrench. As mentioned before, I need my beefy son available to pull me out butt first via belt or I am in deep doo doo trying to wedge myself out.......need someone small with arms like an orangutan to get down there....still looking for that person to bribe!
 
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