the large bronze nut shortly behind the transmission encircling the shaft leading to the propeller? It appears as though there is a locking nut at the stern end of the nut, which would mean that I tighten toward the transmission...is that right? How tight do I tighten? Any assistance would be greatly appreciated. I need to get this tightened up soon, as it began dripping at a moderate rate following a trip where we had to motor against the wind for about 4 hours. It is dripping when the engine is not running. Thanks,
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Yes, that's right
The large packing nut runs counter to the thinner tightener nut. They're diametrically opposed, so all you have to do is loosen the thin nut to move the big one. Tighten down the big one to stop the drip, then retighten the thin nut to keep everything in place despite vibration.
The large packing nut runs counter to the thinner tightener nut. They're diametrically opposed, so all you have to do is loosen the thin nut to move the big one. Tighten down the big one to stop the drip, then retighten the thin nut to keep everything in place despite vibration.
everything you ever wanted to know link
check out this link - I'm sure that doing a google search for shaft packing will yield lots more useful info Don
check out this link - I'm sure that doing a google search for shaft packing will yield lots more useful info Don
Another picture.
Don's Related Link failed for me. Here is another stuffing box picture. If you are working from the starboard side then the lock nut(aft-most) is turned away from you. The forward nut and collar are one piece. Under that collar is the packing, probably three rings of 1/4". You need to replace that and I recommend GFO. You can tighten until almost zero drips even with shaft turning. Meanwhile loosen the lock nut. Then turn the "box nut" away from you to tighten. Hold that nut while tightening the lock nut. On my H37C I work from the port q-berth so the directions change. At any rate it is clockwise to loosen the lock nut and tighten the box nut if looking aft down the shaft.
Don's Related Link failed for me. Here is another stuffing box picture. If you are working from the starboard side then the lock nut(aft-most) is turned away from you. The forward nut and collar are one piece. Under that collar is the packing, probably three rings of 1/4". You need to replace that and I recommend GFO. You can tighten until almost zero drips even with shaft turning. Meanwhile loosen the lock nut. Then turn the "box nut" away from you to tighten. Hold that nut while tightening the lock nut. On my H37C I work from the port q-berth so the directions change. At any rate it is clockwise to loosen the lock nut and tighten the box nut if looking aft down the shaft.
Huh? to stop the drip? no no no no
Do not stop the drip. If you do, the shaft will overheat, and you will kill it. The water is there to provide cooling and lube while motoring. Keep it at a drops every 15-20 seconds or so. If the engine is not running, rather, the boat is not moving, then there shouldn't be any drops.
Do not stop the drip. If you do, the shaft will overheat, and you will kill it. The water is there to provide cooling and lube while motoring. Keep it at a drops every 15-20 seconds or so. If the engine is not running, rather, the boat is not moving, then there shouldn't be any drops.
Sorry JC, but
you are wrong. I have motored over 40 miles continously at 2600 or above withOUT drips. Before doing this I had a lot of experience with checking the shaft and stuffing box temperature. With GFO you do not need water lubrication. However, do notice in the Related Link(of my previous post) that GFO does recommend a very slow drip. But nothing like you are used to with even teflon packing. I think you will find other testimonials in the Forum Archives.
you are wrong. I have motored over 40 miles continously at 2600 or above withOUT drips. Before doing this I had a lot of experience with checking the shaft and stuffing box temperature. With GFO you do not need water lubrication. However, do notice in the Related Link(of my previous post) that GFO does recommend a very slow drip. But nothing like you are used to with even teflon packing. I think you will find other testimonials in the Forum Archives.
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