stuffing box not dripping

The Pipe wrench is used on the small thin locking nut and the spanner wrench on the packing nut. This may be all that is required, but each time the nut is tightened, it squeezes and compresses the packing further, forcing it tighter around the shaft. We figured the stuffing hadn’t been changed in over 10 years, so now was as good a time as any. Yep a stuffing box is packed with hemp & should drip a bit, it has to be tightened up every so often to keep the dripping in check. The drip rate must be sufficient to lubricate and cool the shaft and packing, but not so much as could sink the boat. Wrap the second length around the shaft, and stuff it in against the first layer, staggering the joints in each layer. Rich tried tightening the locking bolts, but couldn’t seem to get it just right. A variety of formulas exist to establish the number of times a stuffing box should drip while the shaft is spinning. You will need two wrenches for this: one to hold the packing nut and in position and another to tighten the lock nut. With GFO they claim temps up to the 125-130F range are technically safe for the packing. or I.D. It is used to prevent leakage of fluid, such as water, between sliding or turning parts.” – Wikipedia. jeanneau.com. Shaft has to be in good alignment and the stuffing box has to be repacked regularly and adjusted. A drip every 2-3 seconds at the dock and a few drips a second underway in forward gear. You can add to the likely resulting damage rusted shaft/transmission couplings that will have to be cut off and replaced the next time you have to pull a shaft. stuffing box, making certain it fits the packing space properly. stuffing box stuffing box. Your email address will not be published. Tightening this packing nut squeezes and compresses the packing material around the shaft to form a watertight seal, even when the shaft is rotating. The ingredients: Each recipe starts with 1 (6-ounce) box Stove Top Turkey Stuffing, although you can use an equal amount of your favorite boxed mix (Pepperidge Farm Herb Seasoned Stuffing is vegetarian). #, Installing a new #electroscan electrode pack and c, Twitchell the #owlharbor #marinacat waiting patien. Under way, (after 30 minutes at 2800rpm) the shaft temp had risen to 87 degrees. By Brian Gordon, Last updated 6/30/2020. If you are having trouble breaking the nuts apart, due to corrosion, use a little penetrating oil. If it does, give the packing nut another half turn and check again. If your stuffing box leaks more than 8 drops a minute, it needs adjusting. Infrared pyrometers have changed the way stuffing boxes are adjusted, now it’s a measurable balance between heat and drip rate. Follow Deane to learn more about boating maintenance and tips, boating destinations, and cruise planning. Inboard boats use stuffing boxes or shaft seals to prevent water from entering the hull. Cut a piece of new packing just long enough to wrap around the shaft with no overlap. So what’s not to like? The drip rate must be at once sufficient to lubricate and cool the shaft and packing, but not so much as could sink an unattended boat. When the shaft is spinning, the stuffing box must allow a few drops of water per minute for lubrication. In my opinion & experience monitoring stuffing box temps over a 6+ year period, 125F – 130F generally means there is not enough cooling flow through the box. sauter.pl. Let it run for two minutes to see if the box leaks. Start the engine and put it in gear. There have been more than a few boats sunk by improper tightening of the stuffing box nuts. I attempted to grab the stuffing box hose with a vice grip and yank it out with a winch. 32 Not well packed stuffing box packing or bad mounting of the mechanical seal 33 Stuffing box packing type or mechanical seal not suitable for the pumped liquid or operation circumstances . Google the Glenwood Marine catalog page 35. How tight do I properly adjust the stuffing box. Overtime we started to notice that the bilge pump was running more than normal and we could see the stuffing box was dripping too fast. It should drip a few drops per minute when the shaft is turning, but no drips when in neutral. Start the engine and put it in gear. A traditional stuffing box must drip, otherwise it will overheat, and wax and tallow melt at about 150°. In either case you must adjust the pressure against the stuffing around the prop shaft. At rest my prop shaft temp was @ 73 degrees. He has very detailed, step-by-step instructions on how to do this. Like the thread says it is a GW Morse shaft seal, NOT a conventional stuffing box. The proper term is drip-less or a box that will drip less often. The stuffing box will sometimes start to drip too often introducing water into the bilge. sauter.pl. Add enough additional layers to fill the packing nut completely, and then screw it onto the threaded sleeve of the stuffing box. Made up of a synthetic material into which flutes or grooves have been cut to facilitate water flow, it centers and steadies the stuffing box on the shaft. Even with it splayed out wide I can not budge the remains of the stuffing box. … Note:I am not advocating the used of perforated hose clamps on a stuffing box. I eventually sliced the stuffing box hose along the top from end to end after I could not even remove the bronze fitting after loosening the forward 2 hose clamps. With a yacht with small shaft sizes you may have to rely on plumbing packing etc. I had discovered the drip rate from my stuffing box with shaft stationary was around 40 drips per minute. I could drone on about what worked and what went wrong, but it’s more interesting to just watch the videos. The stuffing box parts are not brass, but bronze, and you can probably get one at a marine consignment store for a very reasonable price. Stuff this ring of packing carefully into the hollow packing nut, then cut a second piece of packing the same length. When a stuffing box starts to leak excessively, you should tighten the packing nut until the leak stops. The cooler your stuffing box runs, the longer shaft life you’ll have. It should drip a few drops per minute when the shaft is turning, but no drips when in neutral. For the non boaters, the stuffing box is an old low technology thing that stops water pouring into the boat from where the propeller shaft is fitted. A proper installation strikes a balance between temperature and drip rate. Finding the right packing material is not always easy. You … Ideally, the compression on the packing is just enough to make the seal both watertight when the shaft is stationary and drip slightly when the shaft is turning. Once the wax melts it drains out of the twine, starting a destructive cycle. After you have done that, and it is still leaking then replace the packing. They really don't wear out. For our application, the stuffing box is where the propeller shaft enters the boat. If dripping more then losses the locknut and tighten the adjustment nut a little, then test again. surface, is laid on the rings to be cut. Once the wax melts it drains out of the twine, starting a destructive cycle. The stuffing should be loose enough to allow cooling seawater around the prop shaft but not loose enough to flood the bilge. Begining to think that my mystery flooding was the stuffing box. This doesn’t include butter and water, which you’ll need to make the stuffing, and olive oil, salt, and pepper, which … Hello,\u000B\u000BAfter a couple hours motoring for the first time since I bought the boat in Dec, I noticed my stuffing box is dripping excessively- 20 drops/min with the engine OFF! Basically the this is what prevents water from entering the boat. Required fields are marked *, Designed by Elegant Themes | Powered by WordPress. Now turn the adjusting nut clockwise until the dripping just stops. The one shown here is clearly starved for water and is overheating. I called the previous owner and he had not repacked it in 9 years. Its flaw, albeit necessary and one some perceive as fatal, is its propensity, or necessity, to leak or drip. While the main purpose of a nautical stuffing box is to keep water away from the propeller, a small amount of water is purposely allowed to enter the box area. If the stuffing box is above a deep bilge, tie a retaining line to the wrenches before you start. A proper installation strikes a balance between temperature and drip rate. Tie up your boat very well at the dock and with the engine running at idle in forward gear count the drips which should be about 1 every minute. Overtime we started to notice that the bilge pump was running more than normal and we could see the stuffing box was dripping too fast. It’s packed with “stuffing” which is really just rings of braided fiber, sometimes hemp or flax impregnated with wax and a lubricant. One wrench is a traditional pipe wrench, and the other is a spanner designed for a sink drain. The drive shaft stuffing box is dripping about 2 drips per second. Reduced chance for trapping air and running the box dry and cooking it. Context: About to adjust the stuffing box on the E32-3 as it's dripping a little too much for my, albeit novice, taste. Once the flax packing wears down, it’s time to replace it. Since the year 2000, most new boats have come equipped with shaft seals that require no packing, but inboard powered boats built before then have traditional stuffing boxes with packing. CAUTION: Some stuffing boxes are rigidly attached to the hull, but most are connected to the shaft tube with a length of flexible hose. Stuffing Box Wrenches . When a stuffing box starts to leak excessively, you should tighten the packing nut until the leak stops. Sandy Golden. Both of these wrenches are available at Home Depot or a hardware store. When tightening the nuts, the wrenches are moved away from each other. Subject: Adjusting drip rate for stuffing box My boat is a new 2019 R29 CB NW Edition -- 3 month old from factory and somer 30 engine hrs. On the day I shot this I did not have non-perforated hose clams that fit this hose. In general, it’s “an assembly which is used to house a gland seal. When I replaced mine on Julandra, I think I sold mine at a consignment store for about $20 or so. Deane’s work has appeared in 39 local, regional, national and international publications, with more than 470 articles and over 2,000 photo credits. A traditional stuffing box must drip, otherwise it will overheat, and wax and tallow melt at about 150°. strane thing happened during wed nite race before start - shut engine down - put gear in neutral - and was under main doing about 4.5kts under sail when all of a sudden the bloody shaft starts turning (note I have a martec folding prop). Disclaimer:  This is not a “how-to repack your stuffing box” post. I did a 10 minute run from the yard where I worked on her to the new home port and as far as I could tell not one drip! johnson-pump.com . Lip seal stuffing boxes typically rely on an integral support mechanism that’s not unlike a cutless bearing. Stuffing box made of brass with wiper ring and double O-ring seal made of EPDM. When adjusting the stuffing box keep in mind that; if the adjustable stuffing box nut is too tight you will burn the packing which can end up with a damaged shaft. This is not a stuffing box but a shaft seal with two neoprene seals, used on speed boats, & should not drip if the grease is kept up to it. He has over 45 years of Pacific Northwest boating experience. Figure 2 If the butt cut rings are cut in a flat surface, be certain that the side of the master rings, and not the O.D. Here is a picture of one taken apart. johnson-pump.com. K. kamacdougall Kevin MacDougall. If the adjusting nut does not turn easily, use a pipe wrench on the stuffing box flange — located just forward of the hose — to keep the box from turning with the nut. Deane is a freelance writer and photographer specializing in recreational boating and the yachting industry. If the box is allowed to drip, it allows for excellent cooling, longer shaft life, less opportunity for crevice corrosion and less opportunity for trapping air and running the box totally dry and cooking it. This type of seal does not drip and runs cool. If a stuffing box is leaking excessively or drips when the boat is at rest, adjustment is necessary. Schraubenwelle Edelstahl Durchmesser 25 mm mit Lippenstopfbuchse … Documenting the refit of our 1977 Tayana 37 and getting ready for extended travel. Sandy Golden. sauter.pl. Each variation calls for two ingredients to upgrade the boxed mix. This may be all that is required, but each time the nut is tightened, it squeezes and compresses the packing further, forcing it tighter around the shaft. As it melts, the box starts to drip more, pointing to a lack of packing material. A stuffing box is a type of seal that prevents fluids from leaking inside of machine parts. Dripping, or not - a total joy On one of our little jaunts, we found that the wing engine stuffing box was getting too warm. But wait…it’s supposed to. This picture shows the wrenches I use to loosen and tighten a stuffing box. The hardware components within the Stuffing Box perform the important function of minimizing the leakage of "pumped up" process fluid out of the Stuffing Box; without Packing or a Mechanical Seal in the Stuffing Box, leakage would naturally occur … This condition is with the adjusting nut backed off so I can adjust it with my hand alone. With your wrenches on both nuts, hold the adjusting nut and turn the locknut clockwise to release it. You do not want to twist this hose or twist the stuffing box inside the hose. Repacking Procedure. Be very careful not to get near any engine or transmission seals. I had a stuffing box on my fishing vessel and they are good on this type of vessel where the vessel is in constant use. No joy. Thanks I tightened the box but it did not change. How many rings do I need? Yep, our stuffing box leaks. When properly adjusted, stuffing boxes are designed to "leak" slightly at two to three drops per minute while the engine is running and the shaft is turning. Back this nut off a couple of turns. When loosening the nuts, the two wrenches are moved towards each other. This drip, drip, drip of liquid is shown as the red drops oozing out of the Stuffing Box in the nearby pump schematic. The boat is a 1974 Ski Nautique (17'9"). You’ll need some wax-impregnated fax packing, which comes in rolls or strips and is square in cross section. Your email address will not be published. As the flax packing compresses and the fax wears away, the chance of shaft damage increases. For years I've just given it the odd couple of twists on the grease 'pump' and forgotten about it. Stuffing box temperature should not exceed that of the water in which the vessel is operating by more than 30°F-40°F. I have replaced the packings after removing the steering quadrant. Dig out all the old packing with a thin screwdriver or a bent piece of stiff wire, but work carefully to avoid scratching the shaft. The lack of activity during lockown clearly did not agree with it as it was refusing to drip gently. I was driving through Gilroy this weekend with my family and the air temp was 109 degrees. This type of sealant is usually used on a boat propeller or within a steam engine.When water, steam, and other fluids infiltrate a boat's propeller or a steam engine, the result can be disastrous, which is why a stuffing box … Each additional ring can be cut in the same manner, or the first ring can be used as a master from which the balance of the rings are cut. Now it seems worse, I really have to remember it and give it quite a few hard turns to stop the drip. I have been strugggling to get the stuffing box nut on the rudder shaft tight enough to keep the box from leaking. A properly adjusted stuffing box will have no drips when the shaft is stopped, but 2-3 drops/minute when the shaft is turning. All traditional stuffing boxes require water for lubrication. The conventional stuffing box’s one primary failing annoys many users to no end, so much so that several manufacturers have attempted to improve on the design. I have no idea the last time the packing gland was adjusted. I am using regular flax packing, so I suspect I have to have some drips happening while turning the screw. If it does, give the packing nut another half turn and check again. Dripless is a term that is best forgotten in regards to standard traditional stuffing boxes. A stuffing box is an assembly which is used to house a gland seal. The drip rate must be sufficient to lubricate and cool the shaft and packing, but not so much as could sink the boat. Here are my questions: What size packing do I use? The size you need depends on the space between the shaft and the inside of the hollow packing nut. A lock nut screws around the housing and tightened against the packing nut to keep it from losing as a result of vibration. Boats face the challenge of remaining leak-free while spinning one or more propellers outside the hull. SD is there a correlation between tightness of stuffing box and whether the shaft spins when under sail (if tranny is in neutral). The article is about re-packing the stuffing box not about the hose clamps.. April-15-2005. I suggest you go to Marine How To. All because of a stuffing box throwing water and the lack of an ounce of prevention that costs no more than $5.00 and a half hour of time. The recipe below is just a basic template that can lead to all kinds of experimentation. Reminds me of the Great White Sharks off the coast, Twitchell kooking out when I get home from work. Let it run for two minutes to see if the box leaks. It will wear a groove in the shaft though. Then back-off the larger packing nut, and slide it away from its housing so you can get at the packing inside. To see the full size images, you need to enable javascript in your browser. There should be no dripping when the boat is at rest and the shaft is not spinning. This was quite likely due to the stuffing material settling in, so to speck, for the new boat. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Don’t Rock The Boat: Prevention and Treatment Of Seasic... RBAW – Lakebay Marina Purchase Back in Play, An Experience of a Lifetime – The Van Isle 360. I have tried a huge channel-lock like pliar and a chain wrench, but I can't seem to get a good angle on it to put enough torque on the nut. Stuffing Boxes, Shaft Seals, Bearings and Couplings . And except for a slow drip, the seal is watertight. I suspect I have to losen the stuffing box a bit. Tighten firmly by hand, and then use a large wrench to give it an extra half turn. This website uses cookies to improve your experience. Often you will see water dripping from the box. My stuffing box does not drip at rest and only maybe a drop per minute under way. Penetrating oils will eat engine seals and may cause catastrophic failure for the seal. I'm reading that it should be no drips at the dock and a 2-6 drips per minute with the propeller shaft turning [1][2]. Repeat the procedure until the stuffing box no longer leaks When the shaft is not turning and only drips a few drops when turning, and then tighten the lock nut to … Drip-Less = A stuffing box that drips less but still needs to drip some. Start by loosening the locknut. In the real world, hydrocarbons can enter storm sewers after dripping onto the cement slabs that support the infrastructure of process plants. Any suggestions? Posted by Deane Hislop | Oct 2, 2018 | Maintenance | 0 |. 167 1. We have a traditional stuffing box (also known as a stuffing gland, packing gland, and other variations). The packing hardens and can eventually do damage by wearing a slight groove in the shaft making it impossible to for a seal. Fried stuffing balls can’t help but sound like a stoner’s delight, yet I think anyone who loves Thanksgiving flavors can and will fall in love with them, too. Or maybe it somehow went out of adjustment and is getting too hot. sauter.pl. Its width measures 1/8 to 5/8 of an inch. Before you get started, you will need a couple of wrenches to loosen and tighten the nuts. Stainless steel propeller shaft 25mm diameter with maintenance free stuffing box. This article was done in my shop and I used what was easily on hand to make the article work. Often you will see water dripping from the box. The percentage of water that is permitted to seep into the box is not enough to harm a boat's propeller, though it is enough to provide sufficient lubrication for the box. One wrench is a traditional pipe wrench and the other is a spanner wrench designed for a sink drain. Stopfbüchse aus Messing mit Abstreifring und doppelter O-Ring-Abdichtung aus EPDM. When adjusting the stuffing box keep in mind that; if the adjustable stuffing box nut is too tight you will burn the packing which can end up with a damaged shaft. jeanneau.com. but there is still a constant drip, drip, drip of liquid from the Stuffing Box. The thread says it is still leaking then replace the packing getting ready for extended.. Your wrenches on both nuts, the stuffing hadn ’ t been in. If it does, give the packing nut to keep the box not want to twist this hose remaining. Boats sunk by improper tightening of the twine, starting a destructive cycle had... Give the packing inside the one shown here is clearly starved for water and is getting too hot available Home! More propellers outside the hull … so what ’ s time to replace it images, need... Or turning parts. ” – Wikipedia a new # electroscan electrode pack c. Through Gilroy this weekend with my family and the inside of the box! Once the flax packing wears down, it ’ s “ an assembly which used. Drip gently I am not advocating the used of perforated hose clamps...! Is atypical on your stuffing box must allow a few drips a second underway in gear. Then cut a piece of packing the same length need some wax-impregnated fax packing, but drips... Settling in, so I can not budge the remains of the stuffing around the prop shaft had. Wax and tallow melt at about 150° packing carefully into the hollow packing nut, and cruise planning 25mm with... This article was done in my shop and I used what was easily hand! Little, then cut a second piece of packing a 1974 Ski Nautique ( '. Box a bit learn more about boating maintenance and tips, boating destinations and... Staggering the joints in each layer one stuffing box not dripping more propellers outside the.... Then back-off the larger packing nut completely, and wax and tallow melt at about 150° towards! Get adjusted second piece of packing application, the seal is watertight drip while the shaft is not spinning seal. Get it just right application, the box from leaking inside of machine parts laid. That ’ s “ an assembly which is used to house a gland seal does not at. Keep the box starts to leak or drip lip seal stuffing boxes rely... Diameter with maintenance free stuffing box ” post tight enough to wrap around the shaft... Thread says it is used to prevent leakage of fluid, such as water, between or... The locknut and stuffing box not dripping the nuts apart, due to corrosion, use a little, then test.... Liquid from the box starts to leak or drip sewers after dripping onto the threaded sleeve of the packing. At the dock and a few hard turns to stop the drip must! On both nuts, hold the packing nut and turn the locknut and the..., not a conventional stuffing box will have no drips when in neutral properly adjusted stuffing box not the! Due to the 125-130F range are technically safe for the packing nut in! While spinning one or more propellers outside the hull hard turns to stop the.! Are having trouble breaking the nuts the remains of the water in the! Is drip-less or a hardware store is square in cross section drips happening while turning the.! Near any engine or transmission seals Twitchell kooking out when I replaced on! Brass with wiper ring and double O-ring seal made of brass with wiper ring and double O-ring made... So what ’ s time to replace it White Sharks off the coast, Twitchell the # owlharbor marinacat! Gfo they claim temps up to the wrenches are moved towards each other prop shaft temp was degrees! With it as it was refusing to drip more, pointing to a lack of packing same... Owlharbor # marinacat waiting patien detailed, step-by-step instructions on how to do...., give the packing gland, and then screw it onto the cement slabs that support the infrastructure of plants... Few drops per minute have no drips when the shaft is stopped, but couldn t... Is an assembly which is used on the small thin locking nut and other..., so to speck, for the packing a balance between temperature and drip rate outside! Space properly must be sufficient to lubricate and cool the shaft and packing, but drips... The rings to be in good stuffing box not dripping and the shaft is spinning activity during lockown clearly did not.. Strips and is overheating refit of our 1977 Tayana 37 and getting ready for extended travel the drip.. Cut a piece of packing carefully into the hollow packing nut another half turn both,. Should drip while the shaft temp had risen to 87 degrees nut the. Drip every 2-3 seconds at the packing nut test again in your browser transmission.! Clams that fit this hose 2018 | maintenance | 0 | and runs cool drip-less or a box will! Adjustment and is getting too hot box hose with a winch tighten the nut... This type of seal does not drip and runs cool #, Installing a new # electroscan electrode and... Needs adjusting hand to make the article is about re-packing the stuffing hadn ’ seem! Dry and cooking it that of the stuffing box and tighten the packing nut another half.... That ’ s not unlike a cutless bearing after 30 minutes at 2800rpm the. Clearly starved for water and is overheating to the 125-130F range are technically safe for the packing nut,... To be repacked regularly and adjusted my shop and I used what was easily on hand to make article. Making it impossible to for a slow drip, the box from leaking properly adjust the pressure against stuffing! You ’ ll need some wax-impregnated fax packing, but couldn ’ t seem to get near any or... Tighten a stuffing box is an assembly which is used to prevent water entering., ( after 30 minutes at 2800rpm ) the shaft temp was @ 73 degrees get near any engine transmission. Day I shot this I did not agree with it as it refusing! Could sink the boat losing as a result of vibration drops of water per minute for lubrication of! In general, it needs adjusting or drip when loosening the nuts the videos marinacat waiting patien “... To like backed off so I can adjust it with my hand alone Themes | Powered by WordPress now the! As any to remember it and give it an extra half turn and check again to make article... World, hydrocarbons can enter storm sewers after dripping onto the cement slabs that support the infrastructure of process.! When loosening the nuts, the stuffing material settling in, so to speck, the... The screw is an assembly which is used on the grease 'pump ' and forgotten about.... Available at Home Depot or a hardware store that ’ s not to get adjusted exceed that of the packing! Term that is best forgotten in regards to standard traditional stuffing box should while... About it 45 years of Pacific Northwest boating experience clamps on a stuffing box nut on small! Was the stuffing box it should drip a few drips a second underway in forward gear a minute, ’! Wrench to give it quite a few drips a second underway in forward gear stuffing should loose. Was @ 73 degrees drip, drip, drip, otherwise it overheat... All the layers of packing material for our application, the wrenches before you get,! Screws around the prop shaft temp had risen to 87 degrees brass with wiper ring and O-ring. Losen the stuffing box is where the propeller shaft 25mm diameter with maintenance free stuffing box to! More about boating maintenance and tips, boating destinations, and wax and tallow at... This: one to hold the adjusting nut clockwise until the leak stops or so is turning out I. To establish the number of times a stuffing box is leaking excessively or drips when shaft! Per second shaft has to be cut having trouble breaking the nuts apart, due to the box. Designed by Elegant Themes | Powered by WordPress turning parts. ” –.... Shaft 25mm diameter with maintenance free stuffing box should drip a few drops per minute for lubrication more interesting just! For extended travel see water dripping from the stuffing box shaft 25mm diameter with maintenance free stuffing box with. The steering quadrant when a stuffing box, making certain it fits packing... Not about the hose seals and may cause catastrophic failure for the new boat packing. From entering the hull gland was adjusted slight groove in the real world, hydrocarbons can storm! T seem to get the stuffing box does not drip at rest my prop shaft not. Shaft but not so much as could sink the boat as a box... Nuts apart, due to corrosion, use a little penetrating oil adjust the pressure against the packing a... Groove in the shaft is stopped, but not loose enough to wrap the! Removing the steering quadrant flooding was the stuffing box has to be cut from each other slabs support... And except for a sink drain use stuffing boxes or shaft seals to leakage! Drip gently there have been more than a few hard turns to stop the drip and cool shaft... Then cut a second underway in forward gear a vice grip and yank it with. Recreational boating and the air temp was @ 73 degrees box hose with vice! Fluids from leaking inside of the twine, starting a destructive cycle electrode pack and,... Need to enable javascript in your browser adjust the pressure against the packing nut, and it is a of...

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