For 3/4" to 3-3/4" (20mm to 95mm) shaft diameters. These need to be tight. The carbon flange is attached to the stern tube via an articulated rubber bellows. By hand or with a small block of wood, lightly tap evenly (around the shaft) the steel collar aft 1/4". Once that's done, here's how to do the job: 1. However it looks as if you have sealant on the shaft. 3) the seal may have a bad spot on it or could be out of round as a result of a defect from the manufacturer. You'll clean up the shaft, install the new rotor and bellows, reattach the shaft to the. PSS Shaft Seals can be easily retrofitted and is . Visit Website If the screws lose their grip, the bellows can slowly push the rotor forward on the prop shaft. Secondly, the shaft must be aligned to the center of the stern tube because this unit has no provisions for self-alignment. When the seal does eventually need replacement, you simply remove the split cap, pry out and remove the old seal and then slide the seal that is already on the shaft down and replace the split cap. Dripless Shaft seals I may get chastised for this comment. of the seal ring. As WoundUpMarine mentioned, the Tides uses a lip seal which seals directly against the shaft (vs. the SS rotor on a PSS or similar seal). Holding the flange boss with Stilsons I undid the flange Allen nuts. The screw that comes out of each hole will go in first when re-installed. I may be wrong because it's been a while, but I believe the PSS style seals against itself, as a carbon/stainless mechanical seal. These set screws can only be tightened once because the shaft, usually Aqualoy or Nitronic, is harder than the grub screw. Mark the position of the collar on the shaft with a Sharpie or tape. Loosen the packing-gland locking nut and the compression nut. Remove the bolts that connect the transmission to the coupling. If this is not done, the shaft seal will get hot quickly (without water . As their name implies, dripless shaft seals are designed to completely stop water from entering a boat's hull via the stern tube. DOUBLE TAPER SHAFT 1-1/8 x 52-1/8 $ 350.90 Add to cart; Drip-less water cooling kit for 1-1/4" $ 39.62 Add to cart; Dripless Shaft Seal - for 1 shafts (most direct drives) $ 397.83 Add to cart; Replacement Seals for dripless shaft systems $ 36.00 - $ 51.25 Select options; safety collar for 1 inch shafts $ 25.37 Add to cart; set screw . The Shaft Cap is required to installation. What comprises Dripless Shaft Seals? Adjust collars as instructions state. The PSS Shaft Seal is the top selling vessel mechanical seal in the marine industry and is installed as standard operating equipment by numerous boat builders and ship yards. Follow the steps outlined in the video . The tide's style seals against the shaft. Works perfect!! ADVERTISEMENT Thanks for watching! Here is a picture of the shaft seal. I recently purchased PYI Shaft Seals to replace the 8 year old seals my boat currently has installed. This is done by pulling the rubber bellows slightly to let water push the air inside the seal out. Required tools are pretty basic, with one caveat: Large screws in the face cap require a #3 Phillips screwdriveruse a #2 Phillips and you'll eventually strip the unit's face-cap screws. Once that's done, here's how to do the job: 1. A thin lm of water sits between the stationary carbon or ceramic ange and the stainless-steel rotor. 3) Push the shaft towards the stern separating it from the transmission. That's why I didn't mention anything about the engines or V drives. 2. Among other manufacturers, Volvo Penta and Vetus offer shaft seals based on lip seals. Loosen and slide the rotor forward on the shaft, apply a thin, even coat of toothpaste to the carbon flange, then press the rotor against the flange while turning in order to polish both surfaces. Five minutes and you're done. It's not a PYI seal, but another less expensive brand. So easy a sailboater could do it. Been three years now and zero problems. First thing to determine is what type of seal you have- conventional or dripless. Once the bellows is relaxed, the mechanical seal between the rotor and flange is lost, and sea water can flow into the bilge. Slide the stainless steel rotor down the shaft until it just TOUCHES the carbon. Remove the bolts that connect the transmission to the coupling. Have your marina block the boat and remove the coupler to the trans. How to replace can be found in the below link. Furthermore, how some folks think that slow . In this video, Capt. Drip-proof shaft seals such as the P.S.S. Available with cross-over water feed for twin shaft applications. Once set and operational the carbon/graphite face will actually polish the stainless steel rotor face during the beginning minutes of working. HOW DOES IT WORK? The dripless operation of PYI shaft seals offer various benefits, including: Minimizing needless bilge pumping Prevention of corrosion No adjustment needed after installation Reducing shaft seal maintenance No need to adjust packing Significantly less wear and tear on the shaft than traditional packing systems As with any rubber hose below the waterline, the PSS bellows must be inspected on a regular basis for any sign of wear, aging or chemical deterioration. Some DSS products use setscrews to hold the rotor in place. Boat Make. Slide the stainless steel rotor aft until the seal is compressed to an installed length of 5". Loosen the packing-gland locking nut and the compression nut. Some of that is going to have to do with hours and type of water; clear/muddy, fresh/salt, ect. Field Tester. I'm talking about the seal where the shaft goes through the floor, the packing seal (if you will). Conical marine face seals have a seal ring with a beveled face and a mating friction ring with a counter bevel. The system is simple and effective. The bellows and the carbon side of the PSS shaft seal was wobbling so hard back and forth as to make the banging sound. The PSS (Packless Sealing System) shaft seal is a mechanical face seal, which uses the seal created between the flat surfaces of the rotating stainless steel rotor and the stationary carbon flange. A thin film of water forms on the interface between the stainless and the carbon, lubricating the seal. Mark this position on the shaft as the "neutral" position with a marker or a piece of tape on the shaft just in front of the rotor. Related Products Customers Also Viewed $479.99 Wipe both surfaces with a clean, soft cloth and acetone prior to reassembly. The scoop forces the water up through the seacock, through a strainer, into a tee, and then to both dripless seals. I don't remember the exact drip rate but someone else will chime in. This happens more often than one might think. Any nicks, gouges or scratches on your shaft were it comes in contact with the Tide's lip seal COULD lead to failure. We had the shafts polished and the problem was solved. 2. When a lip seal begins to leak, replace it. If the screws lose their grip, the bellows can slowly push the rotor forward on the prop shaft. Slide the shaft toward the aft of the boat, about 10 to 12 inches. The plus side to dripless seals is a dry bilge. PSS Seal. We had a set replaced and they started weeping when we were in the Northwest Providence Channel on the way home from the Berries. It wouldn't be easier to replace with dripless seals but once done you should not have to replace for a very long time. The Type A PSS Shaft Seal is a mechanical face seal. Move the shaft aft and place a socket between the coupling and the transmission coupling and using 2 longer bolts retighten the couplings together and it will force the shaft out of the coupling. This was the first time I saw the PSS spray water into the boat. Tides Sure Seal Benefits: Lloyds Approved. :thumbsup: I actually had to partially close the the seacock feeding the seals as the pressure from the scoop feed water was too great. There are two main types of dripless seals known as face seals and lip seals which many boat manufacturers now fit to production boats. Some dripless shaft seal products use set screws to hold the rotor in place. This picture of a cross section of a shaft gland come to us thanks to the Alberg 30 class site. 1. The stuffing box (your prop shaft seal) is adjusted were there is next to no drips with the shaft not turning. The Packless Shaft Seal assists to cease water in the bilge (100% complete water tight) and damage to the propeller shaft. Polishing these out still may not be sufficient to allow these seals to seat correctly. Depending on the boat, the size of shaft, and the power output, there may be four or six nuts and bolts. PRICE FROM 180.36. They are Velvet 5000's. I mentioned the part of the water cooling hose going from the exhaust raw water to feed the seals because I thought that might help with what they are. 4 With the shaft turning you should see 1 to 3 drips per minute. 2 Adjusting a conventional stuffing box. Operates through a wide range of shaft RPM and operating temperatures. 04-06-2021, 10:30 PM. They can also be fitted as replacements to boats with . . This rotor is attached to the shaft. A more vigorous cleaning can be performed using a 600 grit wet/dry sandpaper folded in half to have grit on both sides. Tightening the hose clips may resolve the problem afterwards. They will supply you with a dripless holder that winds onto your existing bronze dinosaur parts and you're all set. The sealing surface is created between the flat surfaces of the rotating stainless-steel rotor and the stationary carbon flange. Vince Daniello offers a quick fix to get you back to shore. How it works: Two nitrile o-rings seal the stainless steel rotor to the shaft and will not experience wear A primary set screw and a backup set screw (2 sets) are used to secure the stainless steel rotor to the shaft A seal is created between the two mating faces of the carbon stator and the stainless steel rotor It is pretty sweet in that it includes a spare seal that rides on the shaft in front of the housing. seals described above must be "burped" before the boat is operated after a haul-out. Most of those dripless lip seals are Nitrile rubber and cooled by water injection behind the seal so yes, small particles usually pass through with no problems. Got a developing issue. If the boat is being towed or you shut down the shaft a dripless is on then you need to either lock down the shaft or keep water somehow flowing to the dripless to prevent the seal from . The stainless-steel ceramic rotor is sealed to the shaft by two O-rings recessed into the collar's bore. Seals are maintenance free. The shaft was then slid back to allow access to the central nut (24mm) which is inside the prop shaft flange and then once that was undone a two legged puller was used to pull off the flange. Available for shaft sizes 2-3/4" to 5" (70mm to 127mm) as a complete seal or retrofittable upgrade with a simple rotor replacement. These lip seal type shaft seals are more of a set and forget, in terms of leaking, however retaining clamps and . The pss seal is pretty bulletproof, general propeller in Bradenton carries them. These shaft seals are dripless, and rely on the principles of a mechanical face seal. 1- Loosen the packing gland nut. You'll start by removing the coupling from the shaft from the transmission, then remove the old stuffing box. Very often, shaft installers manhandle the shaft with water pump pliers or Vice-Grips, which leave small digs even in stainless. 26' Duffy, 23' Seaway, 14' Holland. This protects the shaft against electrolysis and acts as a safety in case the set screws fail. Your bilge shouldn't be running too much, but it will after a while. (takes a puller) then you have to remove the old stuff from the stern tube and polish the shaft really well. Dripless Shaft Seal leaking (stbd side) - 1989 Bayliner 3288 twin Turbo Hino. The PSS should have a lot more leeway in the condition of the shaft and still be able to seal. This fairly simple procedure can be done with boat in water. If you would like to learn more about Shaft Seals and how important it. If your dripless shaft seal fails while underway, you've got a problem. Dripless shaft seals. Select Styles for Availability $22.44 - $279.99 Add to Cart Model # P015712060 Overview We offer PSS Shaft Seal Maintenance Kits to keep your PSS Dripless Shaft Seal in perfect working order. 3 A seal is created between the two flat surfaces of the carbon stator and the stainless steel rotor. . If not, then you'll need to replace the packing. Also, if there is galling or marking on the shaft, the seal ring cannot be installed without first polishing the shaft. These two surfaces are held together with spring tension. 2- Loosen and remove the four nuts between the transmission and coupling. The PSS Shaft Seal is also recognized as the premiere retrofit (aftermarket) seal on the world market. If leaking there slide the shaft boot forward and check for damage to the neoprene body or shaft corrosion. The housing simply holds the rubber seal precisely against the shaft. 2) Loosen and remove the four nuts between the transmission and coupling. Only the starboard shaft is leaking while . It holds the carrier for the shaft lip seal just like the hose holds the packing gland on an old style stuffing box. It is possible you may never have to replace it. Learn more about cruising Ask Captain Chris,. Tides [Sure Seal] work great providing your prop shaft is smooth and unmarked. The sales manager confirmed this problem with me and demonstrated it at the Ft Lauderdale boat show last year. Not sure of the make of the dripless shaft seal but I think it may be a Norscot (see photo) since it uses ATF Tranny Fluid as a lubricant in an elevated resevoir above the shaft. Adjust it of course, but it may be adjusted to the end, now replace it. With the boat out of the water, measure and note the installed length of the seal. If from the sealing faces separating the two sections and cleaning may help. For our C30 we got a quote recently for $1190 to install a dripless shaft seal (350 parts and 840 labor). Done . Start engines and check for water. As these O-rings rotate with the shaft and rotor; they do not experience any wear during operation. That is not including haul out, and may be discounted slightly by . Finally, follow the instructions for proper placement of the vent tube. What do you do IF the dripless shaft seal drips? Typically one should smooth the area that the seal will be seated onto if there is any suspect of a worn place on the shaft. PYI Says this right in the installation instructions: The face is then lapped to 4 light bands. These volcano head screws rely on the initial "cut" or bite into the shaft for the grip. . The stationary carbon flange is attached to the front side of the bellows with hose clamps, and the back end of . In its traditional form the conventional stuffing box, discussed last month, carries out a vital role, allowing a spinning propeller shaft to pass from the inside to the . Use a product such as Kroil, PB Blaster, Thrust or other quality penetrating oils. Often referred to as dripless, face seals compress a fixed bearing against a collar that is attached to the shaft. Dripless Stuffing Boxes; Avoid the Pitfalls, and Keep Your Bilge Dry. All components are non corrosive and inert to electrolysis. There is a big difference between power boat vs sailboat applications due the difference in RPM's the shaft turns. Pop on a spare seal and if, IF, you ever need to replace it for some odd reason just yarn the old one out and slip the new one in. But here goes. As you do this, the incoming water will flush the sealing faces, and the leak should stop once the rag is removed and the sealing faces are back in contact. Simple to install. If that happens you also lose the crossover feed water. 4- Apply a penetrating oil to the shaft and coupling. Passagemaker review of the dripless PSS seal. I can't help with dripless, but with conventional packings try to access the stuffing box nuts. Important tip for dripless shaft seals! 1 Two nitrile o-rings seal the stainless steel rotor to the shaft and will not experience wear. Use the boat part look up below to ensure you are purchasing the correct part for your boat. $181.99 Add to Wish List Select all Add selected to cart Description Dripless Shaft Seal - 1-1/8" Shaft If your dripless shaft seal has failed get it repaired before you ruin your shaft. Usually these have no moving parts and the seal is accomplished by one or more elastic lips around the propeller shaft (also called radial shaft seals or Simmerrings). It happens more often than you might think. A bellows is spring loaded and provides the pressure that seals the PSS style stationary carbon flange up against the shaft held and revolving stainless collar. You shouldn't need to take the shaft out. It does leak or drip some when its running. Depending on the boat, the size of shaft, and the power output, there may be four or six nuts and bolts. . The shaft packing is lubricated with lake water and should have "x" number of drops per minute. 2 A primary set screw and a backup set screw (2 sets) are used to secure the stainless steel rotor to the shaft. 4) Apply penetrating oil to the shaft and coupling with PB Blaster or Thrust. From the seal housing there is a blue hose that brings water from the exhaust mani to keep the seal water cooled . If you can, then you can try tightening them a little to see if it helps. There usually are two allen screws per hole, remove the outer screw and just loosen the inner screw a half turn. Day One: 1) Loosen the packing gland nut. A dripless shaft seal will cost between $200 and $1,200, depending on how big your boat is (shaft size and shaft log size), but in general closer to the $200 figure. . Properly compressing your PSS Shaft Seal is critical, as not enough compression may cause the PSS Shaft Seal to leak. Once the bellows are relaxed, the mechanical seal between the rotor and flange is lost, and sea water can flow into the bilge. That looks like a dripless seal, as in non adjustable, odly enough they actually do drip quite a bit. The PSS dripless system likes higher RPM's vs slow RPM's of sailboat shafts. The PYI seal, like perhaps some others, uses two carbon discs that provide the lifetime seal. Boatbuilders and boat yards recognize the advantages and value of . The PSS Shaft Seal is the #1 selling marine mechanical seal worldwide and is installed as standard equipment by many of the world's most reputable boat builders and boatyards. Face seals rely on the spring tension created by a bellows-type hose. Notice the "locking nut" and the "adjustable stuffing box nut" in the picture. 2. 3- Push the shaft towards the stern separating it from the transmission. A hose connects the fixed bearing to the stern tube. I had that on my 08 LSV and as long as its not dripping when the boat is off its ok. If shaft will not release you may have to cut it off rather then harm the transmission from using too much force capta Master Mariner Joined Jun 27, 2011 Dripless shaft seal replacement: Step-by-step. I wanted the same thing as you many years ago when we purchased and restored our 53'. 1) HIGH DENSITY CARBON/GRAPHITE FLANGEThis space age composite is machined to shape. Loosen the screw and move the rotor, even 1/8" and you need new screws. Any vibration This was not a large volume of water, as it only sprayed as it banged against the shaft, but it was enough to "stop and fix it now". CONICAL FACE SEALS Any Shaft Vibration or Misalignment Will Cause Leaks. The frequency of having to adjust the drip rate on my packing gland (I may be approaching replacement) has me thinking about replacing it with a dripless shaft seal. seal $20-30 specify 1 1/8 or 1" oj props sells them and skidim OJ complete dripless system is $125- 149 skidim maybe oj props There are clamps that hold the red rubber boot to the boat , then clamps that the boot holds the seal housing to the shaft. The split cap set up is new. Dripless packing is an option from Malibu for 2005. $169.99 Add to Wish List Select all Add selected to cart Description Dripless Shaft Seal - 1" Shaft If your dripless shaft seal has failed get it repaired before you ruin your shaft. The PSS is a mechanical face seal that needs to be inspected and maintained over time. hook up water injection lines, put shafts back in couplers and bolt up, install props. Remove two set screws from each of the threaded holes in the stainless steel rotor. Slide the shaft toward the aft of the boat, about 10 to 12 inches. Most of the reported failures though are traced to zinc chips clogging at the hose nipple going into the dripless seals. 2) The seal may be seated over a worn area on the shaft and cannot seal properly. Use the boat part look up below to ensure you are purchasing the correct part for your boat. Dripless shaft seals are based on one of two different principles: lip seals or face seals. You can pull the two surfaces apart with your hand and allow water in. 4788 Dripless Shaft Seal Replacement-gctid774083 11-01-2016, 05:01 PM . the two downsides I saw were if the seal fails for any reason you get a flood of water instead of a leak. No moving parts to wear or cause a 'snag' risk.

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