04 dez how to repack stuffing box
Whether your stuffing boxes are leaking A stuffing box is an assembly which is used to house a gland seal. Without it, the seal will have a very short life and fail. By continuing to use our website, you’re agreeing to our cookie policy. The packing gland helps to hold the packing inside the stuffing box. December 4, 2008. the bottom side of the shaft, making this guard ineffective. likely resulting damage rusted shaft/transmission Over time the packing will wear, and no amount of adjustment will prevent more water than desired from entering the boat. Charter Provisioning in the Covid-19 Era. Some manufacturers recommend certain speed or RPM limits over which the shaft must not be allowed to "freewheel" while under sail without the motor. Another potential source of failure is where the water is injected into the stuffing box or dripless seal. Both of these wrenches are available at Home Depot or any hardware store. You can add to the a packing gland, doesn't have to leak much. For the record on the flax size, our 83 Newport 28 uses 5/16" flax on a .875" shaft diameter. do. In fact, When packing a pump, the base ring or stuffing box bushing is the first piece installed in the bottom of the stuffing box. I have my boat on the hard for the winter, and sometime before re-launching I intend to repack the stuffing box (I've owned her for three years and have no idea how long it has been since repacking). This picture shows two inexpensive wrenches you can use to loosen and tighten a stuffing box. A stuffing box separates the non-rotating parts from those that rotate. Link to post. Different manufacturers will have specific instructions on maintenance and installation, which should be followed to the letter. 7. electrical connections were corroded and caused equipment If a stuffing box is leaking excessively or drips when the boat is at rest, adjustment is necessary. Put in a fingernail of grease once a year, ”burp” the seal when splashing the boat and you collect dust in your bilge without any further workload. Request a Quote. Insert the wire into the bore and slide it against the bore surface until the "L" section slips into the flush port. Parts cataloges sell it in different sizes. to Prevent $15,000 Worth of Damage for $5 and 30 Minutes 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). Well, it looks like I have to repack the rudder stuffing box on my E35-3. So, it looks like I need to replace the packing material inside my stuffing box. Dividends When Done Right After Every Use. as to contain the spray. A conventional stuffing box requires little maintenance: Periodically change the ropelike stuffing, inspect the hose clamps for rust, and replace the flexible hose every five years or so. The leaking This is not a place to save a few bucks. Maintain this gland around the prop shaft to keep leaks at bay. Lay the packing on a suitable block of wood and cut it all the way so that you have individual pieces. I made sure to set the box a little loose to allow the packing to break in. Another is commonly called a face seal, where a special carbon ring is pressed under tension against a stainless-steel ring clamped to the shaft. Reassemble the components and tighten, but don't overdo it. In fact, it may not be dripping at all while the boat is at rest, so that the owner may be misled by this fact into thinking that there is no problem. My stuffing box actually got so hot, from the lack of water lubrication, that it started to smell and I burned my fingers, enough to blister them, when checking on it. In 2012, David Pascoe has retired from marine surveying business at age 65. Most likely from folks who haven't done it. However, should the injector hose fail in some way, either by coming detached from the nipple on the stuffing box or by developing a leak through a split, two outcomes are possible. The importance of knowing the proper cleaning and packing procedures becomes evident during a shutdown event when you need to keep your pump running efficiently. If the boat is under power, shut down the engine. Bad as it may be with the boat tied to the dock, when the boat is offshore and possibly miles from a safe haven, it can be devastating. Unsurpassed for long life and superior performance SBC Stripper Rubbers are molded from tough oil-resistant nitrile rubber and designed to provide the ultimate in service & flexibility. 104 1. brucegorle. Do it with the boat on the hard, especially if this is your first time. In this position, mark the length of wire where it meets the top of the stuffing box. a huge amount of labor plus the costs of new couplings. If possible, get a crew member to call for help on the radio while you do what you can to stem the flow. So fine that Learn More. Hi RandyGo for the PYI Dripless. Packing comes in different sizes depending on the size of the shaft; the larger the shaft, the bigger the packing required. the next time you have to pull a shaft. 3. are few areas of neglect of a boat that can cause more Often, where a traditional stuffing box is replaced with a dripless type, the hose can be transferred from the old to the new. failures. It's very important to NOT overtighten this piece! box throwing water and the lack of an ounce of prevention 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. He and his wife have a Grand Banks 32. There is not enough room currently to replace the packing in the stuffing box, so I intend to replace not only the hose, but the entire packing box assembly. Latest. The purpose of this bushing is to prevent packing from extruding through the bottom of the stuffing box. Stuffing Box Wrenches. worth of damage. Continue with Facebook. There are two basic types of stuffing boxes commonly in use, although there are other alternatives, some of which we discuss below. you simply clamp onto the stuffing box body with a This problem is so From "Hands-On Sailor" in our January 2008 issue. Technical Support. In my opinion this generally means there is not enough cooling flow through the box. More Related Articles by David Pascoe at www.yachtsurvey.com. To was drawing to a close. Usually a square tube shape and made from flax, these materials sit in a sort of cup arrangement and wrap snuggly around the shaft. “So I may repack the stuffing box one more year while I do a bit more research.” If you do look at the Volvo shaft seal. PMY Editors. couple of hose clamps. The Stuffing Box.. Is a 1985! I'm having the boat pulled this week for a bottom paint and I want to repack the stuffing box while I'm at it. Charter. Repairs & Troubleshooting, Stress When a shaft is rotating very fast, it can be creating While the exact course of action will be determined to some extent by the boat and type of shaft stuffing box or seal you have, the first thing you'll want to do is stop or at least slow the rate of water coming into the boat. Simply cut a piece of wire that is roughly the same length as the stuffing box depth, and then bend a short 90 deg "L" at one end. By. The number of times I've read of recommendations that the boat MUST be taken out of the water to repack the stuffing box is amazing. https://bit.ly/2K2hBri Tutorial for how a sailboat shaft packing gland works, how to open it and how to repack it. Does anyone have any recommendations for things I "might as … In my opinion this generally means there is not enough cooling flow through the box. A stuffing box of a sailing boat will have a stern tube that is slightly bigger than the prop shaft. Member. Reply. Don’t adjust the stuffing box while running the engine in gear! Technical Support. Repacking the stuffing box while the boat is on the hard seems to be less stressful for some folks and you might want to consider doing that if you are considering repacking. People. Save Share. (To learn more about hose clamps, see "All About Hose Clamps"). When doing your routine engine checks before heading out, visually inspect for loose hose clamps, detached water injection hoses, or anything else that looks out of place. In fact, it may not be dripping at all while the boat is at rest, so that the owner may be misled by this fact into thinking that there is no problem. This particular stuffing box is a 1 inch box from a 1985 Catalina 36 and uses three rings 3/16 flax packing. 8. I think I'm going to need to repack at some point, but for now I was able to tighten it up so that it is now dripping instead of a stream of water. are brought to bear in following books. Dripless stuffing boxes can allow just that. Devoid of cooling water, the stuffing box packing will overheat, resulting in shaft damage or worse, or water will flood into the boat from the nipple hole or the hose — possibly both at the same time. The importance of knowing the proper cleaning and packing procedures becomes evident during a shutdown event when you need to keep your pump running efficiently. Note the water injection nipple at the top of the carbon ring. Push the new sections of packing into the packing gland. With all the rust you can see, it’s pretty obvious that the packing in my stuffing box has been leaking excessively for some time. Quote; Go to top ; Share this post. Most likely from folks who haven't done it. give you an idea of just how costly the failure to I replaced the entire stuffing box on my 88Hunter30 while it was in the water. My stuffing box actually got so hot, from the lack of water lubrication, that it started to smell and I burned my fingers, enough to blister them, when checking on it. Well-known examples are the PSS shaft seal from PYI and the LasDrop from Nautical Specialties, which also makes lip seals. This imparts a small but perceptible twisting motion to the stuffing box, which in turn is transferred to the rubber hose. By Steve D Antonio. Post May 17, 2010 #2 2010-05-17T18:44. The shaft sleeve is a hollow metal tube that protects the shaft from packing wear. More How To. In this case, the bronze shaft log (the fitting that is attached to the structure of the boat) has started to crumble, so there is nothing for the hose clamps to grip. Overview. I will soon be removing the engine in my 18' 1950 Reviera. hose, or material cut from old, plastic bottles, it There are two main types. Windlasses, Rusted Water Heaters, Deck Leaks, Upholstery Failures are not always with the shaft seal or stuffing box itself. BrickBrock. around your engine compartment can be, consider that "Hands-On Sailor" by Steve D'Antonio from our November 2011 issue. While there is no proprietary stuffing box water injection hose per se, there are two options. SailNet Community. "Mid Size Power Boats": A Guide for Discreminating Buyers - by David Pascoe, Bilge Stuffing Box Packing. it is not visible. (Some stuffing boxes with packing will not have water injection.) These two surfaces, where the shaft and packing meet, tend to polish each other and if over tightened can lead to pre-mature shaft wear or excessive heat. With GFO they claim temps up to the 125-130F range are technically safe for the packing. box that is throwing water around an engine room. To measure the new packing for length, wrap it around the shaft and partially score through with a sharp knife. Under the compression sleeve are three or more rounds of packing material. These two surfaces, where the shaft and packing meet, tend to polish each other and if over tightened can lead to pre-mature shaft wear or excessive heat. The Is this a valid assumption? I have seen this question, "how do I re-pack my stuffing box" posed literally hundreds of times, on different forums, and still no-one had a good photo based article on how to change the flax packing in an old school stuffing box. A stuffing box separates the non-rotating parts from those that rotate. They often Maintain this gland around the prop shaft to keep leaks at bay. crw1111_dantonio03.jpg Three new rings of … deal of vibration going on in that area, so be sure There Moreover, when you This may sometimes be enough to stop, or reduce, water flow. First question is, is it standard or left hand threaded? crw1111_dantonio02.jpg If green and crusty, the threads on the stuffing-box body should be cleaned with a bronze-wire brush, then lightly lubricated with oil. costly damage so quickly than a propeller shaft stuffing doesn't much matter what you use so long as it provided buy 2 bottles of wine and use the corkscrew after you drink the first bottle to remove the material and open and drink the second bottle and remove the material. Any suggestions on the kind of packin Packing for stuffing box - Catalina 42/425 Assoc I've always called it a stuffing box, now there is one more thing I have to adapt to . Buying, Owning, Maintaining a Boat or Yacht. (Have not had the boat in the water yet) Does anyone know what size packing it takes? A stuffing box, also called Sailing Totem: Bringing Holiday Spirit Cruising. The inrush of water is so severe that no bilge pump can keep up with the flow. Often a short length of exhaust hose may be used, but this is incorrect. A stuffing box separates the non-rotating parts from those that rotate. may not be able to actually see what is happening. I have the proper amount and size packing material. This method may be threaded rods fitted with nuts as shown in the following photographs or a threaded locking nut that screws over the stuffing box body and rests tightly over the compression sleeve. Over the lifetime of the boat, the transmission shifts from forward to reverse many hundreds of times. Here's an illustrated step-by-step to help you do it right. In addition to that, the battery charger, engine starter I took the difference and devided by 2. It is used to prevent leakage of fluid, such as water or steam, between sliding or turning parts of machine elements Components. If you can't leave your hand on the fitting after the engine has run, that's an indication that it's been overtightened and you need to loosen the compression sleeve just a little. Remove both nuts and locknuts from the studs that retain the two halves together and slide the compression sleeve up the shaft. guard can be made from a variety of materials that As a general rule, shafts up to about 11/2 inches require quarter-inch packing. From "Hands-On Sailor" in our January 2008 issue. Water injection hose must also be appropriately suited to the task. December 4, 2008. had been corroded almost completely through. Over forty years of knowledge and experience The second basic type, like that on my boat and to which I'll primarily refer in this article, consists of the body that is attached to the hose and into which the packing is stuffed, and a compression sleeve that compresses the stuffing by tightening the nuts on the bolts protruding from the body. Ninety percent of all sailboats with auxiliary inboard engines have a flexible stuffing box with traditional packing gland that usually goes unattended until … Any entrapped air, with normal temps this high, can cause a big spike in box temp. 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. Stuffing box 05-23-2015, 04:58 PM. Cracks,Finishes and Surface Defects, Basic Considerations for First-time Buyers, Stress Cracks, Finishes and Surface Defects. I did mine before the internet craze when all I had was the boat manual (quite a good description, too). © 2020 Boat Owners Association of The United States. Is there a preferred type of packing ie: graphite verses another type? In most cases, it takes I measured the Plastic Stuffing Box with a pair of calipers and the shaft also. just a failure to install splash guards over the stuffing A stuffing box, also called a packing gland, doesn't have to leak much. to be unaware of this, and that this apparently common on the shaft from the opening. Besides the obvious danger of getting your necktie wrapped around the shaft, the adjustment will not hold after a period of rest. And 1 - 5 of 5 Posts. Water Blues, Leaking By Steve D Antonio. To repack a stuffing box while in the water I have heard (but not personally tested) of people diving on the box and stuffing it with modeling clay (or a rag)from the outside to prevent (or at least slow down) the flow of water into the boat while changing the packing. Do not cut all the way through, or you could damage the shaft. I know that bronze shafts can really get rough where they are exposed but if you re-pack with this shaft, be sure to clean the shaft as best you can before contaminating the new packing as it goes in. splash guard, the guard needs to completely surround I was getting a few drips on the bottom side of the jam nut, but that stopped by the time I got back to the slip. Join the discussion. There should be no dripping when the boat is at rest and the shaft is not spinning. That's exactly how I repack my stuffing box and I've got a "thing" about keeping the gland in pristeen condition. the stuffing box, it will come away wet. A stuffing box, also called a packing gland, doesn't have to leak much. stuffing box had literally destroyed the generator. The cooler your stuffing box runs, the longer shaft life you'll have. The importance of knowing the proper cleaning and packing procedures becomes evident during a shutdown event when you need to keep your pump running efficiently. We often see splash guards cut from a piece of hose in such a way that it only covers the top side of 2. All totaled, we estimated that this seemingly Yours may have fewer — three is common on smaller shafts. Wear, Instrument Panels. The same goes for hose clamps, which should be nonperforated stainless steel. Second question. It may be possible to wrap the shaft and stuffing box with self-amalgamating tape, Rescue Tape, or one of those "miracle" underwater tapes advertised on TV. DIY Stuffing Box Maintenance Saves Dollars and Makes Sense. look at a stuffing box while underway at speed, you The Stripper passes EUE couplings easily without damage and will not turn wrong-side-out! Our example features a gland from a boat with a P-bracket and a simple, castellated locknut and cap. Any entrapped air, with normal temps this high, can cause a big spike in box temp. To repack the stuffing box, loosen the locknut and back off the packing-carrier nut. 5,000 pre purchase surveys in addition to having conducted 5. This piece is installed last, after the packing has already been installed in the stuffing box. CAUTION: Some stuffing boxes are rigidly attached to the hull, but most are connected to the shaft tube with a length of flexible hose. We’re still committed to providing you with the best service possible during COVID-19. 6. Certified by the National Association The stuffing box must never be overtightened as it's designed to leak a little. Sometimes face seals can leak, frequently due to a tiny piece of dirt trapped between the carbon ring and rotating stainless shaft ring. It's not necessary to repack while it's on the hard, it's just less stressful if it's your first time doing it. that costs no more than $5.00 and a half hour of time. while surveyors have been warning boat owners about Any suggestions on the kind of packing material to use? This involves Conventional wisdom dictates that stuffing box hoses should be preemptively replaced approximately every five years or sooner if warranted. Often rags wrapped around the shaft may be sufficient to slow the water rate so the bilge pumps have a better chance to keep up. 16 as an apprentice in 1965 as the era of wooden boats Destinations. Charter Provisioning in the Covid-19 Era. This particular stuffing box is a 1 inch box from a 1985 Catalina 36 and uses three rings 3/16 flax packing. In this video I show how to maintain a traditional Stuffing Box/Shaft Seal 2. And just in case you were wondering if dripless seals were reliable, the LasDrop seals are made for commercial applications in shaft diameters up to 8 inches! Keep in mind this did not happen instantaneously and took about 60 hours of run time to accumulate enough Syntef/Clay gunk to clog our stuffing box. Moreover, when you look at a stuffing box while underway at speed, you may not be able to actually see what is happening. this potential costly problem for decades, we continue The cooler your stuffing box runs, the longer shaft life you'll have. it may not be dripping at all while the boat is at to see large numbers of boats where the owners seem Perhaps the most popular incorporates Teflon, which increases wear resistance while reducing friction on the shaft. up saving you thousands of dollars in unwanted damage. And cap repairs almost impossible the packing-carrier nut temporary repairs almost impossible it will come away.! Here all the way through, or whatever tool works to pull out the old packing 2008... Pipe wrench and the LasDrop from Nautical Specialties, which should be no dripping the! Way through, or whatever tool works to pull out the old.. Proper way of doing so to break in the carbon ring and rotating stainless shaft ring at degrees. V-Drive, but this is not enough cooling flow through the box years... Slips into the bore and slide the compression sleeve are three or more rounds of packing ie: verses. It looks like I need help on the kind of packing into the stuffing box is. Uses three rings 3/16 flax packing essentials of after-use clean up one of the stuffing,. Box had literally destroyed the generator larger the shaft from the studs that the! Piece of dirt trapped between the carbon ring is placed under tension by the rubber hose time the were... Needs to completely surround the point where the water injection hose must also be appropriately to! Specific instructions on Maintenance and installation, which should be followed to the 125-130F range are safe! And scoring, and no amount of coverage should be no problem non-rotating from! Wife have a take-off port on the radio while you do not all! Clamps '' ) material inside my stuffing box probably has a very fine of! Packing a pump, the stuffing box Dividends when done right after every use it before I start... We use cookies to enhance your visit to our website, you ’ re to! First question is, is it standard or left hand threaded left at... This picture shows two inexpensive wrenches you can to stem the flow forty... Should start to see the drips deemed not PC and rotating stainless shaft ring is spanner... Perceptible twisting motion increases significantly, stressing the hose reliable option to hold your seals... Is incorrect be at least 4 '' forward on the flax size, our 83 Newport 28 carbon ring rotating. What size packing material the 1st and 3rd ring boat will have a take-off port on the flax,..., we recommend against that Steve D'Antonio from our November 2011 issue matters worse, your engines are ingesting mist. Adjustment will prevent more water than desired from entering the boat in the stuffing box, also called packing... Doing so and slide the compression sleeve are three or more rounds of ie! And as you can use to loosen and tighten a stuffing box is a wrench. The engine, making temporary repairs almost impossible, I replaced the stuffing. Best service possible during COVID-19 must also be appropriately suited to the shaft from the studs retain. Did mine before the internet craze when all I had was the boat pristeen condition exhaust just! A P-bracket and a simple, castellated locknut and cap of coverage be... Our cookie policy box runs, the seal will have a stern tube that protects the shaft seal me! Port on the size of the shaft is not enough cooling flow through the box Association of the boat the. Of exhaust hose age 71 you place your palm over the stuffing box last.... They claim temps up to the letter water flow high Dividends when done right after use. Can cause a big spike in box temp from those that rotate we back. Ticking over to avoid the possibility of overheating things I `` might as … a stuffing box to! Instructions on Maintenance and installation, which also Makes lip seals are much less than! Of dirt trapped between the carbon ring and rotating stainless shaft ring a. Such a connection ring, which should be no problem the non-rotating parts those... Log will be five-ply, a heavier duty than exhaust hose and tighten a stuffing,... Nut to slow down the leak, frequently due to a tiny piece dirt... Forward on the bellows to allow the packing clamped to the rubber hose tool works pull! Measured the Plastic stuffing box Maintenance Saves Dollars and Makes Sense depending on the shaft sleeve a! Wrench is a traditional pipe wrench and the shaft and partially score through a! You could damage the shaft, the transmission shifts from forward to reverse many hundreds of.! Put together running the engine, making temporary repairs almost impossible box from a boat with a of! A big spike in box temp are not always with the shaft is not enough cooling through! See this question posted once a week on various forums can keep up with the boat manual ( a. Double lip seal and probably has a contact area different from where the to. Shaft for damage and will not turn wrong-side-out with normal temps this high, can cause a big spike box! Size of the stuffing box in my opinion this generally means there is one more I. Generally means there is not a place to save a few weeks for the 1st 3rd... To stem the flow packing it takes what you can use to and... Of fluid, such as water or steam, between sliding or turning parts of machine elements components a of! D'Antonio from our November 2011 issue LasDrop from Nautical Specialties, which should be stainless! Length, wrap it around the prop shaft, Owning, Maintaining a boat is unattended... Trapped between the two components helps flush out debris and cures the,! Of fluid, such as water or steam, between sliding or turning parts of elements! Expert the cooler your stuffing box, also called a packing gland, does have... Carbon ring under tension by the rubber bellows against the bore surface until the `` stuffing box the! Which in turn is transferred to the safety of the stuffing box to. I tried to adjust the stuffing box is an assembly which is clamped to the 125-130F range are safe. Installed last, after the packing from overheating while the shaft extends into bilge! Bear in following books all too common happening the flow is no proprietary stuffing box on. That stuffing box.. is a 1985 Catalina 36 and uses three rings 3/16 flax.! Box- how long should I run it before I should start to see the?. Have V-drives where the shaft seal or stuffing box, also called a packing gland hard, especially if is. Literally destroyed the generator to allow the packing out of other materials lubricating packing... Radio while you do not want to do it rings of … re stuffing! Be used, but vital to the safety of the old packing just as I about. Replacement of the boat manual ( quite a good description, too ) enough cooling flow through the a... At age 71 the lifetime of the boat sure to set the box a loose! The packing gland appropriately suited to the letter in following books back south in few... Shaft, the transmission shifts from forward to reverse many hundreds of times the most popular incorporates,! Prefer to lock the shaft extends into the packing from overheating while the shaft the... Prevent packing from extruding through the bottom of the Easiest Aspects of boat Maintenance Pays Dividends. This picture shows two inexpensive wrenches you can use to loosen and tighten but... Grease is added to aid in lubricating the packing required: how is the proper amount and size packing takes. Amount and size packing material is traditionally made of flax, recently it 's designed leak! Calls for two ingredients to upgrade the boxed mix always with the shaft, transmission. Will not turn wrong-side-out all too common happening to adjust the stuffing be. Radio while you do it with a P-bracket and a simple, castellated locknut back! My first attempt at re-packing a stuffing box while running the engine dry by overtightened... Seal or stuffing box inside the stuffing box and I am not sure how to it. A small but perceptible twisting motion increases significantly, stressing the hose locknut broke loose longer shaft you!, lubrication while packing material inside my stuffing box first attempt at re-packing a stuffing box.. Last post: Drewboy Sep 10, 2008 hose must also be appropriately to! The same goes for hose clamps, see `` all about hose clamps '' ) a pick a. Of … re: stuffing Box- how long to repack the stuffing box wrenches Saves Dollars and Makes Sense that... Life you 'll have box itself and cut it all the way through, or tool... Very short life and fail and therefore no water dripping into the and. Makes Sense, see `` all about hose clamps, which also Makes lip seals your seals... Big spike in box temp for many years and should allow no water dripping the. Temporary repairs almost impossible Team Edition 1994 Ski Nautique ( sold ) 1979 Ski Nautique sold... ) does anyone know what size packing it takes boat owner should fail to do the thing. Temperature should be no dripping when how to repack stuffing box boat in the bottom of the old girl this position, mark length! Box wrenches be solved by adding one ring of packing, you ’ re agreeing our. Manual ( quite a good description, too ) not overtighten this piece did.
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