Any 336 or 340 owners with a dripless shaft seal out there?

[robertsapp]

It's time to replace the shaft log hose. I think I'd like to upgrade to a dripless shaft seal. There isn't very much room between the coupling and the log. Has anyone with a 336 or 340 done this? Does a standard dripless seal fit in the available space?

 

[Bill19233]

Previous owner had installed one on my 2000 340, I recently added a shaft collar from PSS for a little extra peace of mind, hose goes to the mixing elbow on the Yanmar.

Not the best photo, but I had it in the boat file on my computer and it shows plenty of room, I beleive PSS specs say 6.225" length for the 1" shaft model.

 

[robertsapp]

Re: Any 336 or 340 owners with a dripless shaft seal out the

Great, thanks. One of the things I'm scratching my head over is that the existing shaft log is mounted to the hull with two bolts, which appear to be so close to the body of the log that there's no room to slide the hose on properly. I was hoping the rubber hose for the dripless seal was thinner in profile and would slide onto the log properly. Looks like it does judging from your picture.

 

[navigator97]

Re: Any 336 or 340 owners with a dripless shaft seal out the

Another consideration for going dripless, is to use the Teflon green putty in place of the middle ring in the stuffing. I have used that for many years now and remain dripless. No heating on the stuffing box or shaft. very functional and much lower cost. It is available at WM and others. It's worked for me on our 1990 H-33.5 with a 1.000" bronze shaft.

 

[Ralph Johnstone]

Another consideration for going dripless, is to use the Teflon green putty in place of the middle ring in the stuffing. I have used that for many years now and remain dripless. No heating on the stuffing box or shaft. very functional and much lower cost. It is available at WM and others. It's worked for me on our 1990 H-33.5 with a 1.000" bronze shaft.

I agree with dripless traditional packing. Do a search of packing, packing glands, stuffing boxes and anything else that rhymes to see how modern packing materials will allow a gland to run dry as dust without problems. Much, much cheaper, and easier .

 

[navigator97]

Re: Any 336 or 340 owners with a dripless shaft seal out the

The driples packing coumpound is made bt WESTERN PACIFIC TRADING and is called
Syntef Stuffing Box Lube
W.M. Model # 255358 | Manuf. # 10150 Cost at W.M.is $13.99 and it enough to last at least 4 re-packings, and you only have to repack it every few years. very cost effective. For the 1st and 3rd packing rings I use Teflon impregnated Flax packing. The Syntef compound is formed and put in as the 2nd ring. Then snug down hand tight and then turn with a packing wrench 2 or 3 "flats" on the stuffing nut.

 

[robertsapp]

Re: Any 336 or 340 owners with a dripless shaft seal out the

Well here's thing. My shaft log hose or whatever it's called, the rubber hose that connects the shaft seal to the shaft log, is starting to pull apart where it slides onto the log. It obviously needs to be replaced. It looks like it was never properly installed to begin with, because the the mounting bolts on the log that I mentioned look like they kept the hose from being seated as far onto the log as it needed to be. I'm planning a quick haul out over the Christmas break to replace it, and I'll probably put in a new Cutless bearing and get the shaft trued and the prop balanced at the same time. If I stay with the same type of seal, then I think I'm going to have the same problem, with the hose not sliding onto the log properly due to the interference from the mounting bolts. If the bellows for the dripless seal has a thinner wall, then I think it will fit a lot better, and going with the dripless seal helps cut down on water in the bilge. The cost reallly isn't of much concern, because it will be pocket change compared to what I'll already have invested in the haulout, yard time, new bearing, shaft and prop work, etc.

 

[Ralph Johnstone]

As Previously Mentioned .......................

................... a traditional stuffing box, when properly packed with a modern packing material is 100% dry. No drips, not a single one for the life of the packing. I'm currently shooting for five years after getting three years out of the previous packing.

Can't really picture the current space problem you have without a couple of good photos. If anything, a mechanical seal will require a little more room. Send along a few shots and get a consensus from the forum.

I really think you need to do a little more research on this project before hauling the boat and starting the meter ticking.

 

[robertsapp]

Re: As Previously Mentioned .......................

I may be on the boat this weekend doing some maintenance, so I'll try and take a few pictures. I must admit, this is the first time I've ever heard of anyone saying they think using a traditional stuffing box is superior or even as good as a dripless shaft seal.

 

[Ralph Johnstone]

Make Sure You Get .......................

I may be on the boat this weekend doing some maintenance, so I'll try and take a few pictures. I must admit, this is the first time I've ever heard of anyone saying they think using a traditional stuffing box is superior or even as good as a dripless shaft seal.

................. some real close up shots and perhaps stick in a tape measure or other reference objects.

 

[crosswind]

Ok so I've been diligently following along this thread for my own education.

I just purchased a 79 30' and relocating her down the calumet river into the Mississippi where she will be trucked to her new home on Lake Carlyle here in Illinois.

My concern is due to the week long motoring down the calumet into the Illinois, etc. etc.. I am naturally wondering about the integrity of my packing gland. The PO did not know what type of gland was down there so I had to inspect and much to my suprise (and delight) there is a dripless in place!

So the run is since the PO didn't know what was down there and he owned her for 1-12 years, how much more life should I expect or should I replace it now before my week long journey?

Thanks for all the great info

Crosswinds

 

[crosswind]

Just a follow up to my previous posted question I am posting a picture of the packing gland in her now.

Crosswind

 

[Andreas T]

Here is how it looks on my H336. Just installed it this summer. No problem with clearance.

 

[Rick D]

Re: Any 336 or 340 owners with a dripless shaft seal out the

The PSS I have is an older version like yours without the hose. These need to be 'burped' to get the air out after launching. The new ones do not. The original advice I got from them was ten years or 1000 hours to replace the bellows; I believe it is less now. I have done that twice and each time the bellows looked and felt like new. I keep the old one as a spare, although there would be no way to put it on without taking the shaft coupling off, so it's stupid. Anyhow, these things are low maintenance item. However, only you can make the decision to replace the bellows or not.