Stuffing Box Hose Replacement

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WindEnsemble
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Joined: 11/15/10
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Stuffing Box Hose Replacement

This week while we had the boat out for bottom paint, I decided to also replace the stuffing box hose. I would like to share a few things with the group. No idea if the hose has ever been replaced. I would hope so, but it was in pretty bad shape.

 

1. The coupler puller sold by Catalina Direct worked as advertised. The only problem I encountered was that simply loosening the packing nut (and pulling it forward), did not provide the clearance necessary to get the puller between the coupler and transmission. I had to remove (destroy) the existing hose to get the clearance I needed. Even then it was a tight fit, but once the puller was in place, the coupler came off pretty easy. I did use PB Blaster in the set screw holes and let it sit over night. I recommend doing this. Put some PB Blaster in a small cup (I used the cap to the can), and then apply with a Q-tip. This prevents it from spraying onto things that should not experience PB Blaster. I put it on the coupler/transmission bolts as well. Everything came apart pretty easy.

 

2. I ordered the Heavy Duty stuffing box hose from Catalina Direct. This was a mistake as the angle of the prop shaft entering the hull was so acute that the extra thickness of hose prevented it from sliding completely over the shaft log. In CD’s defense they do mention that the thicker hose will not fit all boats. I should have been more careful. Hopefully they will let me return the kit. If not I will make it available to a C36IA member. I acquired the proper size hose (I got it locally, but it matched exactly the specs on the CD site for the smaller hose size) and managed to get it installed. Even the proper size with clamps was a very tight fit. Too tight a space between the shaft log and the hull.

 

3. Re-installing the coupler on the shaft. I had searched our forums and other sailing sites to try to get some tips on re-installing the coupler. Most hits either suggested buying a split coupler or heating the coupler prior to trying to slide it back on. I got what I believe is a great tip from the boatyard manager and thought I’d share it. He suggested using valve grinding paste. Apply some to the shaft, then work the coupler on by twisting it back and forth as you push it on. You may have to pull it back off and add more paste a time or two, but I was able to to get the coupler all the way into position without a lot of effort. Then take the coupler back off, thoroughly clean the paste residue from the shaft on the coupler. After doing this the coupler slid right on the the shaft and fit perfectly. No heat, no beating, etc.

 

We launched today and the boat didn’t sink. I’m calling that a win.

 

Jeff

S/V Wind Ensemble
1987 C-36 Wing Keel
Universal M25XP 23hp
Hull #705
Coastal Alabama