Join Date: Oct 2009
Location: Swarthmore, PA
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Re: Stuffing box/Catalina 36MkII
I have a C34MkII with identical stuffing box arrangement, so I'll reactivate this thread. Before doing my (first) adjustment, I read the relevant sections of Calder's book and also MaineSail's website.
I think I have my issue resolved, so rather than a question I'll just post a comment. In my case I had 1 drop every 2 seconds at rest, and 1-2 drops a second when running (depending on RPM). I loosened the lock nut, etc. I ended up turning the compression (flax) nut about 1/3 of a turn, and water was still coming in. Then I suddenly felt a little resistance, and the water stopped abruptly. Unfortunately, when I put the motor in gear, I still had no drip, and I know this is a problem. The nut didn't get hot (up to about 80F after 10 minutes), but it still wasn't right to have no water. I did a lot of experiementation and no luck - either water all the time or no water ever.
Later I discovered that the nut can be adjusted by hand (thanks to some carefully placed PB Blaster that I had shot in a week ago. Without using a wrench, I could take it from frequent drips to no drip at all, and the amount of turning needed was only a few degrees. Very sensitive - could never find the right place if I were using a wrench. Finally, after multiple attempts, I found the sweet spot where it's dry when at rest and 3 drips/minute when in gear. Temperature rose to about 72F after 20 minutes of operation. I tightened the lock nut by hand, then used 2 wrenches very carefully, to make sure I did not move the compression nut at all.
A full replacement of the flax and rubber tube will go to the top of my offseason todo list, since I don't know when PO did it. Due to galvanic issues with the newfangled graphite flax on bronze shafts, I will use traditional wax flax.
Rick S., Swarthmore, PA
USCG Certified Captain, OUPV and 50 Ton Master
ASA Certified 101/103/104/105/106
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2001 Catalina 34MkII Tall Rig Wing Keel Breakin' Away, Universal Diesel M35B, Mantus 35 lb. anchor, sailing out of Rock Hall Landing Marina
Last edited by TakeFive; 05-08-2017 at 08:10 AM.