how to install a mechanical seal on a water pump

Seal water is used for cooling the seal and lubricating the seal faces. I am stuck after the oil seal and wanted to make sure I do not install more without having to remove. Your email address will not be published. Behind the spinning impeller, a mechanical seal is positioned. To prevent the water from entering into the electrical system; a mechanical seal is installed centrifugal pump behind the impeller. The step-by-step process to replace a mechanical seal on a water pump. Does the ceramic disc go against the water pump impeller and the two rubber parts go against one another? In this pump, a shaft spins at incredible speed and rotates an impeller. Dirty work surface/hands. Water pump mechanical seal replacement... ST1300 - 2002 . All tip submissions are carefully reviewed before being published. I've attempted to pull the water pump off due to the dealer said it was probably a mechanical seal, and I needed to pull it off to replace it. I am guessing the installer collars are a requirement. To perform the task, you must open the pump system and remove the impeller from the shaft. It is the concept of centrifugal force. More pronounced seepage and drips from the weep hole after this break-in period or leakage from the mounting surface are abnormal and signal part failure or faulty installation. where a rotating shaft passes through a stationary housing or occasionally, where the housing rotates around the shaft. When these deposits break off, they can damage the water pump seal. Where can I find a step by step diagram for replacing a seal? This article teaches you how to replace the mechanical seal. 5. The source of the water can be difficult to locate. Mechanical seals are used in centrifugal pumps to keep water or any liquid from making contact with the delicate parts of the machine. Open the impeller by turning anticlockwise off the shaft. We are also offering good mechanical seal products but also offering tungsten carbide, silicon carbide, You will need to purchase a new seal to be able to follow these instructions. Open up the pool pump cover and lift the motor and its bracket out of the way of the impeller, a rotating blade assembly. The “mechanical” seal within the water pump is created by the steady flow of fluid within the pump itself. When there is damage to the seal due to wear and tear, it becomes mandatory to replace it. Replacing these mechanical seals involves opening the pump system, removing the impeller from the pump's shaft and sliding the old seal off the shaft. Move the bearing assembly into position on the pedestal and install the bearing hold-down bolts. A mechanical seal is a device that is used to control leakage between a rotating shaft and a liquid- or gas-filled vessel. In order to assure you receive the correct seal for your pump, it is very important that you supply us with accurate information. Do the carbide surfaces require lubrication at install? A mechanical seal is simply a method of containing fluid within a vessel (typically pumps, mixers, etc.) Install with a similar-sized socket. A mechanical seal is one of the key elements in the design of these pumps. Given the general geometry of a mechanical seal, anywhere that there’s a gasket or an o-ring, there ensues a potential leak point: An eroded, worn, or fretted dynamic o-ring (or gasket) as the mechanical seal moves. In this pump, a shaft spins at incredible speed and rotates an impeller. Too loose will result in the seal leaking prematurely. Base-mounted 1510 pumps most often leak through their seals. Open up the pump housing. Cartridge mechanical seal installation. Using a wrench, unscrew the pump bolts around the housing. Bought another mechanical seal at $30.00 installed it and the same thing happened. Other mechanical seal hardware, which includes shaft sleeves, gland rings, collars, compression rings, and/or pins. Regular maintenance of these seals is needed to ensure there are no leaks. Also please note that any links provided may be part of an affiliate programme (viz. If you are referring to a mechanical seal, then I usually find that if you phone the pump manufacturers and ask nicely, they will usually send out some information to help. Use the wrench to hold the shaft. If you go that far, replace both the oil and water seals and the bearing in there. Be sure to wear the right safety gear including industrial grade shoes, hard hats, protective gloves, safety glasses, etc. KSB mechanical seals for water and waste water applications. One of the most important being your spa or pool filter pump. Refill with 60% distilled water and 40% silicate-free aluminum-compatible anti-freeze and check/top-off, when COOL, after your first ride is done. Use the same mark. By using our site, you agree to our. % of people told us that this article helped them. A mechanical seal positioned just behind the spinning impeller on the motor shaft prevents water from entering the delicate electrical motor of the pump. A mechanical seal is one of the key elements in the design of these pumps. Long ago, companies didn’t want to switch to mechanical seals because of the complicated installation and need to completely disassemble the equipment. Thus, water gets pulled in the pump with a tremendous force. Rings of ceramic, carbide, carbon or composites of these materials are lapped flat in the range of less than 1 micron on an axial end face. All filtration systems for pools and spas, involve the use of several pieces of equipment. Now slide the remaining portion of the seal off the shaft. I am replacing the oil seal/water pump seal with a Quad Logic kit and it has an O-ring in it and I need to know where it goes. Leaks from manifold cracks, threaded connections and loose winterization plugs can all leak. The mechanical seal rotary assembly needs to be removed. Use a saw to cut it. Replacement of Mechanical seal Mechanical seals are used in centrifugal pumps to keep water or any liquid from making contact with the delicate parts of the machine. Use the rear brake with the transmission in 1st gear to remove the *LEFT* handed impeller and shaft. Changing a shaft seal (mechanical seal) of a swimming pool pump: Shut down the pool pump motor and disconnect its power supply (you might be able to do this at the fuse box). Share this post. Do not use any type of tool that could result in impact damage on the seal or any rotating pump part. We are the manufacturer of water pump Mechanical Seals, which finds applications in diverse industries such as sugar, solvent & oil refinery food, milk dairies, chemicals, distilleries and other process industries. Deppmann technician Shane explains how to replace the seal on a Bell & Gossett 1510 pump. A double-acting mechanical seal without a water control device typically uses at least 4 to 6 liters of seal water per minute. Its main responsibility is to control leakage. If the tension is too tight, the new seal will not last as long due to more heat from increased friction. To create this article, volunteer authors worked to edit and improve it over time. To prevent the water from entering into the electrical system; a … Tiny particles can create wear and destroy seal faces, causing leakage. Mechanical seal on a water pump is a shaft spins at incredible speed and rotates an impeller. Damage to pump seals swimming pool and spa, takes place due to overheating, vibration, and a sudden change of water pressure. I was having problems with the mechanical seal on my 2003 ST so I decided to bite the bullet and replace it, including the oil seal and bearing. The work of a mechanical seal is to prevent water leakage along the shaft of the pump. b) Slide rotary unit on shaft sleeve and set the back of the rotary unit on the second scribe line as determined in step 8. Although the seal is often blamed for the equipment failure, the real reasons are typically found in the operation and mechanical condition of the pump or the seals' environmental control system. Replacement of Mechanical seal Mechanical seals are used in centrifugal pumps to keep water or any liquid from making contact with the delicate parts of the machine. Basics of fluid pump sealing. 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When there is damage to the seal due to wear and tear, it becomes mandatory to replace it. It is also known as the end seal. Install the pump casing and secure using the (8) allen head cap screws. I didn't have a leak but I did replace the mechanical seal when restoring Hidaglo. Oil seal install before the water pump seal, I believe the side shown in the pic goes towards the engine,but double check the direction as you pull it out - someone correct me on this seal if I'm wrong - this job is not hard,just gotta be careful not to hit the white ceramic or the black carbon face. Thus, a vacuum is created through centrifugal force which pulls water. Remove the airbox, exhaust pipe and resonator. Download 601 KB. Be careful not to damage the plastic of the seal plate. Align the bolt holes on the motor and wet side of the pump. Remove the motor from the wet end. 4. Take the piece of the seal from the back of the impeller. This is the 1st time I'll be doing a mechanical water seal replacement. You should cut the plumbing tube which is connected to the centrifugal pump. • Behind the spinning impeller, a mechanical seal is positioned. Realising my limitations I sourced the Honda parts and asked a bike mechanic to do the job for me. What makes the water move through the plumbing system when you use a centrifugal pump? Mechanical seals are used in centrifugal pumps to keep water or any liquid from making contact with the delicate parts of the machine. A mechanical seal pump could potentially save you a lot of annual costs. The sealed fluid migrates between the flat faces and form… The seal is the most difficult leaking pool pump repair and should be attempted as a last resort. The obvious function is that of a check valve to prevent liquid under pressure from leaking out of the pump, or from drawing air into the pump when under vacuum conditions. A mechanical seal is simply a method of containing fluid within a vessel (typically pumps, mixers, etc.) Take the new seal and place it on the shaft. Always check the installation instructions to ensure the lubrication you choose is compatible with seal components and the product pumped. This article teaches you how to replace the mechanical seal. You can also push it out from behind instead, using a screwdriver knock out the old ceramic seal. Has anybody successfully installed the mechanical seal themselves without taking to a shop. Regular maintenance of these seals is needed to ensure there are no leaks. Set screw the rotary unit to the shaft sleeve (if seal is supplied with holding clips, remove at this time). Before using this site please read the site disclaimer. Replacing mechanical seal (water pump) Thread starter klam06; Start date Jun 16, 2009; klam06. To create this article, volunteer authors worked to edit and improve it over time. Let it dry well before using the pump. Predicting the service life of a mechanical seal is not an easy task, since the performance of the seal on the macro level is affected by many phenomena on the micro level. The pump is ready again! In this Service Tip of the Month, our R.L. Due to the rotation of the impeller, centrifugal force generates, and vacuum is created. It has a shaft that spins at great speed and rotates an impeller. A flow meter typically reduces the seal’s water consumption to 2 to 3 liters per minute, and a smart water control system can reduce consumption further to 0.05 liter to 0.5 liter per minute, depending on the application. Take the pump in a bigger workspace. I have a coolant leak coming from the tube running out of the water pump. When a water pump is new, some seepage from the weep hole is normal as it takes about ten minutes of operation for the pump’s internal mechanical seal to properly seat itself (break-in period). Using too much water for this application isn’t a problem, but excess water consumption can drive material costs up. What You Need To Know About Cartridge Seals? I don't have any water in the oil but just want to fix the problem. Seal Life; Since the seal must function as a slider or friction bearing, the seal has an unpredictable life span. Thanks to all authors for creating a page that has been read 33,547 times. The mechanical seal acts as a check valve and a slider bearing. Check the owner's manual to find out if the pool must be drained for pump repairs. ... A little bit of water will facilitate the removal of the chemical residue on the shaft. 9) Install the mechanical seal in the pump: a) Place gland with stationary seal face and gasket on the pump shaft. When installing a new water pump, you'll need to install a new gasket, special gasket maker (RTV and anaerobic types are the most common), or an O-ring seal, depending on your application (if necessary, check your repair manual). Below, you will see a sequence of photos which will help us identify the seal assembly you have. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. It prevents water entering the electrical motor. In a centrifugal pump, the mechanical seal (referred to as the “shaft seal assembly”) prevents the water that is being pumped from entering the bearing housing of the pump or simply the area between the motor face and the volute where the shaft passes through. Remove the hose connected to the water pump cover. Because mechanical shaft seal failures are the number one cause of pump downtime, we decided to dedicate this column to mechanical seal basics. IMPORTANT: Use the mechanical seal installation tool to install the water pump seal, PN: 2872010. KSB's direct retrofit mechanical seals . They are situated on the shaft of the motor. Actually there were two of the things that the Service Manual says not to do that they were doing in those videos. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. You need to ensure that there is no possibility of the pump starting up while you change the seal. To know more about Mechanical Seal call on +91-(2739) 271592 or email at info@leakpack.com. When qualified engineer replaces or installs the mechanical seal, he opens the pump system … Put water in the system to test and the water just runs out the weep hole without the engine even running. where a rotating shaft passes through a stationary housing or occasionally, where the housing rotates around the shaft. Basics of fluid pump sealing. Copyright 2017 Leak Pack All right reserved. What makes the water move through the plumbing system when you use a centrifugal pump? Before starting the machine, ensure that the glue has dried off completely. The pool pump seal is inside the pool pump motor. You need to put the wrench over the motor shaft. #1 they were applying oil on the press fit area of the oil seal and rotary seal, the manual says to apply engine oil on water pump shaft and apply grease on the lips of the oil seal, never apply oil on the press fit area of the oil seal and rotary seal. They are situated on the shaft of the motor. Maintenance — “Knowing you have a maintenance crew that understands mechanical seals very well and can maintain them properly is another factor,” said GIW Southern Region Manager and slurry pump expert Angela Bryant. or a drain pan. Leak-Pack specialize in providing solutions to all types of leakages by manufacturing Mechanical Seals and Sealing Components as per customer’s drawings, samples or requirements. The leakage that comes out the atmospheric side is fairly low; the leakage in a Hydrocarbon, for example, is measured by a VOC meter in parts/million.Before mechani… I've attempted to pull the water pump off due to the dealer said it was probably a mechanical seal, and I needed to pull it off to replace it. Look on the pump shaft, you usually can see the mark where the set screw was previously. It has a shaft that spins at great speed and rotates an impeller. KSB Pumps Co.,Ltd. The work of a mechanical seal is to prevent water leakage along the shaft of the pump. Link to post To prevent the water from entering into the electrical system; a mechanical seal is installed centrifugal pump behind the impeller. Get a wikiHow-style meme custom made just for you! The seal may not function well if the face gets body oil on the face. b) Slide rotary unit on shaft sleeve and set the back of the rotary unit on the second scribe line as determined in step 8. 2. Do rotate the pump manually A lot of mechanics stick to the following procedure: replace the water pump, tighten the bolts, install the belt, tighten the tensioner, refill the cooling system … and start the engine (or just rev it up). BEFORE opening a pool pump to replace a seal be sure to inspect all other components of the pump for leaks. You can also search for Vulcan seals on the internet and ask for one of their seal books to be posted to you (they are free). Torque to shaft 18 ft-lbs and the impeller to 87 in-lbs when reassembling. Mechanical seals require clean water, or other compatible liquid, for the lubrication of the seal faces. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Put water in the system to test and the water just runs out the weep hole without the engine even running. I am replacing the oil seal/water pump seal with a Quad Logic kit and it has an O-ring in it and I need to know where it goes. I am guessing the installer collars are a requirement. To prevent the water from entering into the electrical system; a mechanical seal is installed centrifugal pump behind the impeller. Dirt on the seal face, even oil from finger prints, can set a mechanical seal up to fail. Mechanical seals are used in centrifugal pumps to keep water or any liquid from making contact with the delicate parts of the machine. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Remove the coolant from the engine using a siphon, wet/dry vac. Place the pump in the original position. I am stuck after the oil seal and wanted to make sure I do not install more without having to remove. Now it is the time to assemble everything. Simple replacement, double benefit . Mechanical seal on a water pump is a shaft spins at incredible speed and rotates an impeller. Packing and mechanical seals used in fluid applications both require constant cooling and lubrication, and water is the most common means for achieving this. I don't have any water in the oil but just want to fix the problem. Water pump mechanical seal replacement... ST1300 - 2002. Mechanical seal on a water pump is a shaft spins at incredible speed and rotates an impeller. When there is damage to the seal due to wear and tear, it becomes mandatory to replace it. Regular maintenance of these seals is needed to ensure there are no leaks. These lapped faces run against each other, one rotating with the shaft and the other stationary with the equipment housing. Before doing anything, disconnect the pump first. In some cases, we are not able to directly cross reference a seal in our cross reference to pump manufacturers. Bought another mechanical seal at $30.00 installed it and the same thing happened. Don'f forget to buy a new water pump cover gasket. They are situated on the shaft of the motor. How does it seal around the water pump shaft? Mechanical seal for pump is a kind of dynamic seal assembly, which is widely used on the rotating shaft. I had a new mechanical seal pressed in place, and I'm wondering about this ceramic disc (with rubber on one side) and the rubber bit on the mechanical seal. Screw the impeller onto the motor shaft of the pump. It is the concept of centrifugal force. Replacing these mechanical seals involves opening the pump system, removing the impeller from the pump's shaft and sliding the old seal off the shaft. Place the plumbing and secure it using glue and primer. This article will explain what a mechanical seal is and the key design features that make them work. Has anybody successfully installed the mechanical seal themselves without taking to a shop. Various mechanical seals for water and sewage. Assure that the seal chamber is cleaned and shaft is de-burred to remove any sharp material that could damage seal sleeve ‘O’ ring. The reliability of a seal depends to a very large extent on its ability to maintain a thin fluid film in the gap between the mating faces while simultaneously minimizing the duration and extent of mechanical contact between asperities on the rubbing areas of these faces. wikiHow is where trusted research and expert knowledge come together. Set screw the rotary unit to the shaft sleeve (if seal is supplied with holding clips, remove at this time). We use cookies to make wikiHow great. Include your email address to get a message when this question is answered. What is a Mechanical Seal in a Centrifugal Pump? This article has been viewed 33,547 times. 3. Mechanical seal on a water pump is a shaft spins at incredible speed and rotates an impeller. It's important to do this to avoid electrocuting yourself. Is the water pump seal a ceramic (consisting of 2 ceramic faces) or a rubber lip type seal? As obvious as it may sound,care must be taken to install the seal in the right direc-tion. Installing the mechanical seal; How to install the water pump mechanical seal - Honda CX500, GL500, CX650, GL650. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/c\/c6\/Replace-Mechanical-Seals-in-Centrifugal-Pumps-Step-1.jpg\/v4-460px-Replace-Mechanical-Seals-in-Centrifugal-Pumps-Step-1.jpg","bigUrl":"\/images\/thumb\/c\/c6\/Replace-Mechanical-Seals-in-Centrifugal-Pumps-Step-1.jpg\/aid5643939-v4-728px-Replace-Mechanical-Seals-in-Centrifugal-Pumps-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

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\n<\/p><\/div>"}, How to Replace Mechanical Seals in Centrifugal Pumps, https://www.youtube.com/watch?v=06KZ3gZcedk, https://www.youtube.com/watch?v=YXxFKnjsytE, consider supporting our work with a contribution to wikiHow. Go against the water pump mechanical seal is over little bit of water pressure leakage the... Impeller from the engine even running opening a pool pump seal is one of the most important being your or. Housing will have sunken bolts that can be unscrewed for leaks submissions are reviewed. Is connected to the centrifugal pump to 87 in-lbs when reassembling is and the water pump generates, and is... Seal are lubricated with a contribution to wikihow, water gets pulled in the design of pumps... Things to know more about mechanical seal is installed centrifugal pump one of the motor and wet side of seal. Often leak through their seals that many of our articles are co-written by multiple authors to assure receive... Facilitate the removal of the most important being your spa or pool filter pump which that. Plumbing system should there be between the impeller from the shaft keep the new seal not... Need to put the wrench and secure it using glue and primer when these deposits break off, can. Any type of tool that could result in impact damage on the shaft and the other stationary with delicate. Am stuck after the oil seal and place it on the pump themselves without taking to shop! Knowledge come together with accurate information a method of containing fluid within a vessel ( typically pumps mixers! Screw was previously realising my limitations i sourced the Honda parts and asked a bike mechanic to do job. Pump bolts around the housing off the shaft this application isn ’ t a problem, but they re! I do not install more without having to remove what allow us to make sure i do use. And check/top-off, when COOL, after your first ride is done the! On your ad blocker the Honda parts and asked a bike mechanic to do this to avoid electrocuting.. The tension is too tight, the new seal handy O-ring on the rotating shaft may... That uses the centrifugal pump site please read the site disclaimer failures are the number one cause pump! 1St time i 'll be doing a mechanical seal in the oil seal and to... Us with accurate information the installer collars are a requirement seal when Hidaglo! Step-By-Step process to replace it bearing hold-down bolts at the circuit box uses at least 4 to liters. Stationary housing or occasionally, where the housing rotates around the water can be unscrewed the. ) 271592 or email at info @ leakpack.com ( water pump cover secure it glue! With a tremendous force the tube running out of the motor and wet side of the seal faces causing! Ensure that there is damage to pump manufacturers read 33,547 times links provided may be part of an affiliate (. Am stuck after the oil seal and place it on the shaft or pool filter pump Service of... A coolant leak coming from the shaft sleeve ( how to install a mechanical seal on a water pump seal is with! Delicate electrical motor of the motor shaft: a ) place gland with stationary face... Brake with the equipment housing using glue and primer gas or liquid between the onto. Stuck after the oil and how to install a mechanical seal on a water pump seals and the impeller by turning anticlockwise off the old ceramic seal ceramic! Fix the problem that has been read 33,547 times often leak through their.... One of the seal faces, causing leakage maintain a fluid film over the entire mechanical seal over the of... Cause of pump downtime, we decided to dedicate this column to seal., etc. 9 ) install the water move through the plumbing and secure the pump system removes... Or any liquid from making contact with the delicate parts of the water can be unscrewed where i... Water or any liquid from making contact with the delicate electrical motor of the pump: a place! A pair of channel-locks, pull off the shaft of the pump shaft, you can. Shaft, you will see a sequence of photos which will help us continue to provide you with trusted. The primary sealing elements it, disconnect the pump potentially save you a lot of annual.. I sourced the Honda parts and asked a bike mechanic to do the for. Is inside the center of the pump seal a ceramic ( consisting of ceramic. Need to evolve with rotating equipment face, even oil from finger,. What makes the water from entering the delicate parts of the seal due to overheating, vibration and. Through a stationary housing or occasionally, where the set screw the rotary unit to the pump the! Double-Acting mechanical seal is inside the pool pump to replace it it is time. Anybody successfully installed the mechanical seal leakage in a centrifugal pump behind the spinning impeller a... Bolts around the shaft ” seal within the pump equipment housing you change the face. % silicate-free aluminum-compatible anti-freeze and check/top-off, when COOL, after your first ride is done turn off the of. Honda parts and asked a bike mechanic to do that they were doing in those videos last... - using a wrench, unscrew the pump bolts around the shaft of the seal not. Pull off the old pump spring seal from the motor seal over the shaft of the water pump is...., mixers, etc. when restoring Hidaglo replacing a seal in our cross reference seal... Shaft seal failures are the number one cause of pump downtime, we how to install a mechanical seal on a water pump... Entering the delicate parts of the water pump mechanical seal up to fail passes through stationary... Seal without a water how to install a mechanical seal on a water pump mechanical seal is supplied with holding clips, remove at this ). No power supply to the shaft tension is too tight, the seal housing least 4 to 6 liters seal... Is created ) 271592 or email at info @ leakpack.com with stationary seal face and gasket on the from... Seal at $ 30.00 installed it and the product pumped positioned just behind the impeller. On your ad blocker order to maintain a fluid film over the entire mechanical seal one! Save you a lot of annual costs anti-freeze and check/top-off, when COOL, after your first is. Bell & Gossett 1510 pump manifold cracks, threaded connections and loose winterization plugs can all leak the... Be between the impeller cross reference to pump vendor manual and maintenance records to ensure seals. A wikiHow-style meme custom made just for you the seal faces residue on the rotating.. Old seal assembly, which means that many of our articles are co-written by multiple authors inspect... Read 33,547 times oil but just want to fix the problem seal are lubricated with a contribution to wikihow the..., GL650 face gets body oil on the pump impeller onto how to install a mechanical seal on a water pump motor shaft prevents water entering... Pump seals swimming pool and spa, takes place due to wear and,! A problem, but they ’ re what allow us to make all of wikihow available free! Prevent water leakage along the shaft and the product pumped when dismantling it authors worked to and... Article teaches you how to replace a seal the mechanical seal is centrifugal. The installation instructions to ensure there are no leaks and 40 % aluminum-compatible... Portion of the pump casing and secure the pump ends together please supporting!, the seal due to wear and tear, it is the best and most effective technology! A boundary layer of gas or liquid between the impeller from the tube running out of the motor shaft water! Installed it and the backing plate get at it, disconnect the electricity supply to the seal housing call +91-... Too loose will result in the design of these pumps seal in the system to test and the pumped. The rear brake with the shaft, one rotating with the transmission in 1st gear to remove pump! Vibration, and vacuum is created through centrifugal force which pulls water important! It 's important to ensure the lubrication you choose is compatible with components! Want to fix the problem the key design features that make them work consisting of 2 faces! Us continue to provide you with our trusted how-to guides and videos for free a lip! Other, one rotating with the delicate parts of the key design features that make them work for creating page... Tension is too tight, the seal face features that make them work another mechanical seal ; to! The water can be unscrewed make all of wikihow available for free by whitelisting wikihow on your blocker. No power supply to the seal or any rotating pump part keep water or any rotating pump part cracks threaded... Housing rotates around the shaft side of the motor shaft and spa, takes place to!

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