How to remove pto shaft from implement - How To Replace Kubota B/LX PTO Seal. How to Connect a PTO Shaft. We thought it would cost thousands of dollars, but was only $30!Tractor Time with Tim Inf...

 
The balls are held by a slip ring that needs to be pulled toward the second ring to release balls. Try releasing the balls before putting the coupler on PTO shaft. If your PTO shaft was left outside. It may require lube on the balls to free them from rust. Sep 30, 2006 / PTO Quick Connect Coupling Problem #3.. R6 stuck on creating squad

Removing a PTO shaft from an implement can be a complicated process. It is important to ensure that the correct size and type of shaft are used, and that the shaft is properly connected to the tractor and implement. Additionally, it is important to ensure that any safety precautions are followed.If it is a two speed, it will have a snap ring retaining the removable shaft in the bearing housing which is fairly obvious, along with a flat spot on the O.D. of the shaft near the snap ring. Single speed output shaft and bearing/seal retainer will be nearly identical to your 5000. Feb 26, 2011 / Broken PTO Shaft on a 1979 6600 Ford Tractor #9.Remove dried grout from ceramic tile using a hardwood implement, water and a plastic scrubbing pad. Once grout cures, it becomes much more difficult to remove, but most grouts are ...Install the shear bolt back through the slip clutch and gearbox shaft. Leave the mower mounted on the 3ph and attach a come-a-long to the tractor end of the driveline, use a chain to go around the front axle of the tractor and hook the come-a-long to it as well. Start pulling against the shaft. Put as much pressure as you can with the come-a ...Customer relationship management (CRM) implementation is the process of setting up and deploying CRM software. Sales | How To REVIEWED BY: Jess Pingrey Jess served on the founding ...Nov 5, 2018. #1. Punch into the PTO shaft hole, then use the crowbar against the punch and differential case, and pry the shaft out. The retainer with the two side flats holds the seal and PTO bearing in place, and the steel plate you just removed has two flats that hold the retainer in place. I'd replace the shaft seal and retainer O ring ...How to remove the belts and a stubborn PTO unit from this tractor and could work with other tractors as well.Stick a bar through the drive shaft universal and let the frame stop it from rotating. Option #2 - Put a pipe wrench on the drive shaft or universal and let the frame stop it from rotating. Option #3 - Thread a rope through the universal and tie it to the frame. The objective is to stop the crankshaft from turning.Cutting a PTO Shaft to Size. If you own a tractor or any other agricultural machinery, you may find yourself in a situation where you need to adjust the length of your PTO (Power Take-Off) shaft.Whether you need to shorten a PTO shaft or repair a damaged one, cutting the shaft to the right size is an essential skill for farm equipment maintenance. In this guide, we will walk you through the ...PTO-driven implements get their power from a PTO shaft that connects your implement's gearbox to the tractor's PTO. The shaft that comes with your implement may need to be shortened to make sure it connects the implement to your particular tractor correctly. If this shaft isn't the proper length, operating the implement could cause great ...The Live PTO utilizes a two-stages transmission clutch. The first stage allows you to operate the PTO shaft while you press the clutch halfway. The second stage, however, will enable you to control the PTO’s engagement. This basically separates the control of the transmission from the control of the PTO operation.The Power Take-Off (PTO) shaft is an important part of a Ford 8N tractor. It allows the tractor to power other agricultural equipment, such as a mower or a tiller. Over time, the PTO shaft may need to be removed for repair or replacement. Removing the PTO shaft from a Ford 8N tractor is a straightforward process that can be done in a few steps.Start by sliding the PTO shaft into the mower deck, and then re-attach it to the tractor engine using the bolts that were removed in step 3. Re-attach the PTO shaft to the mower deck using the bolts that were removed in step 4. Re-insert the cotter pin to secure the PTO shaft to the mower deck. Re-connect the power to the mower.How to Remove PTO Shaft from Tractor. Removing the PTO shaft from a tractor may be necessary for maintenance or replacement purposes. Here’s a step-by-step guide on how to remove the PTO shaft: Ensure that the tractor’s engine is turned off and the PTO is disengaged. Locate the PTO shaft on the rear of the tractor, connected to the PTO gearbox.Expert Advice for Safe Removal. To ensure the safe removal of a PTO shaft from a gearbox, it is important to follow these expert-recommended steps: Turn off the engine: Before attempting any PTO shaft removal, make sure the tractor’s engine is completely shut off and the ignition key is removed.The balls are held by a slip ring that needs to be pulled toward the second ring to release balls. Try releasing the balls before putting the coupler on PTO shaft. If your PTO shaft was left outside. It may require lube on the balls to free them from rust. Sep 30, 2006 / PTO Quick Connect Coupling Problem #3.Thank you for watching!! If we helped you out and you want to show your support - LIKE, SUBSCRIBE or give us a shout out below. If you saw something you didn...To remove a PTO shaft from a yoke, first ensure safety by disconnecting power. Then, locate the retaining pin or bolt securing the shaft to the yoke. Use appropriate tools (e.g., pliers for a spring-pin, wrench for a bolt) to carefully remove the pin or bolt. Slide the shaft away from the yoke, ensuring alignment and balance to avoid bending.291K views 9 years ago. Have you ever wondered how to connect a piece of equipment to the power take off of a tractor? This video demonstrates the correct and …3. Pry Bar method to remove PTO shaft stuck on tractor. Another method that helps when PTO shaft wont slide is dismantling the assembly. Steps: Knock the pins out to have more working room. Remove the PTO shield from the tractor. It’s not rocket science so you shouldn’t face huge problems.Step 1: Prepare the Area. The first step is to prepare the area for the task. Make sure that the tractor and the attached implement are on a flat, level surface. Remove any debris or obstructions from the area and ensure that the area is well lit. Make sure to wear protective gloves and safety glasses before beginning the task.Install the PTO Link ® Implement Coupler to the implement driveline receiver and the PTO Link ® Tractor Coupler onto the tractor’s PTO—in a snap! What used to be a long, drawn-out, strenuous task is now …The risk with not engaging the PTO is that the shift collar can fall out of the shift fork. If this is the case, remove the left step plate (foot rest), then remove the shift cover and lever assembly, and place the collar on the PTO countershaft in the transmission before installing the PTO shaft. Shine a light up in the PTO opening to see what ...Measuring the PTO shaft length is relatively simple, but there are a few important steps to follow. Step 1: Measure the Distance from the Tractor to the Implement. The first step in measuring the PTO shaft length is to measure the distance from the tractor to the implement. This is the distance between the PTO shaft connection points.PTO shaft plastic guards fit 48″ long integral drive systems. These PTO shaft guards are quick and easy to assemble without tools, just use a simple tool such as a key, coin or screwdriver to remove the PTO guard. Easier lubrication of the PTO drive shaft through the grease entry hole, so there is no need to remove the PTO guard for lubrication.You may need to replace your PTO shaft if it becomes worn out, damaged, or if you need to attach a different implement to your tractor. Replacing Your PTO Shaft. Replacing your PTO shaft involves disconnecting the old shaft and attaching a new one. Specific steps on how to disconnect PTO shaft from Kubota tractor can be found in the video ...The risk with not engaging the PTO is that the shift collar can fall out of the shift fork. If this is the case, remove the left step plate (foot rest), then remove the shift cover and lever assembly, and place the collar on the PTO countershaft in the transmission before installing the PTO shaft. Shine a light up in the PTO opening to see what ...The power take-off (PTO) drive shaft is a crucial component in many agricultural and industrial machines.It is responsible for transferring power from the engine to various attachments, such as mowers, pumps, and generators. The PTO drive shaft connects to the tractor's power source and uses a rotating mechanism to transmit power to the attached equipment.To disconnect the PTO shaft safely, start by removing the cotter pin from the PTO yoke. Then, carefully slide the yoke off from the PTO shaft. With the yoke removed, the PTO …If it is a two speed, it will have a snap ring retaining the removable shaft in the bearing housing which is fairly obvious, along with a flat spot on the O.D. of the shaft near the snap ring. Single speed output shaft and bearing/seal retainer will be nearly identical to your 5000. Feb 26, 2011 / Broken PTO Shaft on a 1979 6600 Ford Tractor #9.May 30, 2019 · Today I'll give you some tips t ...more. You're all ready to do work, back the tractor up to the brush hog, the three point lines up easily...but you can't get the darned PTO to extend. What's ... In this video I will show you how to remove and swap a Ford 8N PTO shaft.\#ford8n #vintagetractor #tractorSo to get our measurement we need to do the following: PTO shaft length – Distance between tractor & implement + 75mm buffer. 1000mm – 800mm + 75mm = 275mm that needs to be removed from the PTO shaft. 4. The easiest way to cut the PTO shaft to size is to pull it in half so you have the inner piece and the outer piece.Regular maintenance of your PTO shafts is essential to ensuring reliable and safe operation – AND ensuring your safety as well! In this video, I show you ho...Cutting a PTO Shaft to Size. If you own a tractor or any other agricultural machinery, you may find yourself in a situation where you need to adjust the length of your PTO (Power Take-Off) shaft.Whether you need to shorten a PTO shaft or repair a damaged one, cutting the shaft to the right size is an essential skill for farm equipment maintenance. In this guide, we will walk you through the ...Measuring Your Shaft for Correct Length. 1. Hitch your implement to your tractor using the 3PL arms and raise it to the height where the PTO output shaft on the tractor and the implement align horizontally with each other.2. At this point they will be closer together than when the implement is resting on the ground;Measure from the groove which ...The Role of the Gearbox in a Tractor. The gearbox plays a crucial role in the overall operation of a tractor. It is responsible for controlling the speed and power transmitted from the engine to the PTO shaft. By adjusting the gears within the gearbox, the operator can regulate the rotational speed of the PTO shaft, ensuring optimal performance of the attached implements.Jun 15, 2015 · If I remember right the whole shaft assembly has to come out, then remove the snap ring in front of the housing. Use a punch in the PTO shaft hole and pry on the punch to get the assembly out after draining the rear oil. There is a large O ring that seals the retainer OD also. Jun 17, 2015 / MF 135 PTO shaft seal, how to remove and replace #3. Turn tractor engine off, disengage PTO so tractor PTO splines can be turned by hand. Turn male splines by hand until they align with female shaft indents. Slide shaft onto tractor splines. Retract whatever type of detent you have, button or pull-back collar, then push the implement shaft the final two inches onto the tractor PTO stub.The balls are held by a slip ring that needs to be pulled toward the second ring to release balls. Try releasing the balls before putting the coupler on PTO shaft. If your PTO shaft was left outside. It may require lube on the balls to free them from rust. Sep 30, 2006 / PTO Quick Connect Coupling Problem #3.#thinklikeahorse #ItIsNeverTheHorsesFault Getting this plastic safety cover off the PTO can be Tricky. Hopefully this will help others.NOTE: When I say met...Step 3: Install the New PTO Shaft. Now that the old PTO shaft is removed, it's time to install the new one. Start by inserting the new yoke into the tractor. Make sure the yoke is firmly secured. Next, insert the new universal joint into the yoke. Secure the universal joint with a wrench set. Finally, insert the new PTO shaft into the ...After disconnecting the PTO shaft from the tractor, the next step is to remove it from the Bush Hog. Follow these steps: Step 1: Locate the PTO shaft connection point on the Bush Hog gearbox. It is usually located near the input shaft of the gearbox. Step 2: Inspect the PTO shaft for any signs of damage or wear.367. Location. Gaffney, SC. Tractor. Kioti NX6010, JD 2720 w/46BH, Honda Pioneer 1000. I just had the same wrestling match with my BW12 mower. What a PITA! I spent about an hour doing all the universal joints (a job that should have taken 5 minutes) and, on that machine, there are 6-8 (IIRC) of those shaft covers that to release.Step 4: Remove the Locking Pin. Once you have located the locking pin, you can begin to remove it. You will need a pair of pliers or a flat-head screwdriver to do this. Gently grip the locking pin and carefully turn it counterclockwise until it is loose enough to be pulled out. Once the pin is removed, set it aside in a safe place.CDC - Blogs - Genomics and Precision Health – Toward More Precision in Implementation Science in the Age of COVID-19 - Genomics and Precision Health Blog Implementation science (IS...Step 4: Remove the Locking Pin. Once you have located the locking pin, you can begin to remove it. You will need a pair of pliers or a flat-head screwdriver to do this. Gently grip the locking pin and carefully turn it counterclockwise until it is loose enough to be pulled out. Once the pin is removed, set it aside in a safe place.Remove the PTO clutch shield by using a flathead screwdriver to remove the screws. Remove the PTO clutch assembly from the tractor by using a metric socket set to loosen the bolts. Disconnect the PTO drive shaft from the PTO clutch assembly by using a ratchet and pipe wrench. Remove the PTO shaft yoke by using a pipe wrench.24,645. Location. SE Michigan in the middle of nowhere. Tractor. Kubota M9000 HDCC3 M9000 HDC. There is an E clip that retains the push pin. Remove the E clip and the pin will drop out. You'll need a sharp pointed to to pop it. Aug 30, 2019 / Pto locking push pin removal #4.Welcome to the channel of Todd Family FarmWe are a family farm in central Iowa. There's Papa and Granny, Adam and Jill and 7 children. This is a channel star...PTO shafts don’t always come in the right length for your tractor because they are mea... This video shows the step-by-step process of cutting down a PTO shaft. PTO shafts don’t always come in ...Hi, Thankk you for witing. Remove the 6 bolts #16 on cover #19 and the whole assembly slides out. I hope this helps you. Diagram below. Wayne. Ask Your Own Agriculture and Farm Equipment Question. OK, I have been told that the tractor would have to be split to do the job.Mount the chipper on the three-point hitch of the tractor.2. Cut the engine and remove the keys. Lower the chipper on a firm and level surface.3. Lift the three point hitch so that the power intake shaft of the chipper is on the same height as the PTO of the tractor. The PTO and the power intake should be closest to each other at that position.4.If I remember right the whole shaft assembly has to come out, then remove the snap ring in front of the housing. Use a punch in the PTO shaft hole and pry on the punch to get the assembly out after draining the rear oil. There is a large O ring that seals the retainer OD also. Jun 17, 2015 / MF 135 PTO shaft seal, how to remove and replace #3.The PTO shaft horsepower rating series is a standardized measure of the maximum amount of power the PTO shaft can safely transmit. The rating series is divided into several categories, based on the horsepower of the engine and the power requirements of the implement. The PTO shaft is rated in either a Standard or a Heavy Duty series.Nope,Its no problem at all.There is a big washer up in there.This is an 8 speed with 2 stage clutch for the PTO.Ford told me they use a broom handle with some grease on it to line up and stick that washer back in place long enough to get the shaft back in,and the end of the shaft is beveled on the end so that helps as well.Its really quite simple.Posted December 11, 2011. To save on draining some of the oil you can elevate the back end so the hydro oil movestowards the front of the tractor (jack the back or take the front tires of and lower it down). However, it is just as fast to have a bunch of clean buckets around ready to catch the oil, that way you can inspect for any metal or ...Step 3: Remove the Shaft from the Tractor. Once the retaining bolts have been loosened, the PTO shaft can be removed from the tractor. To do so, place a stand or block of wood underneath the PTO shaft. This will help support the shaft as it is removed. Then, carefully grasp the PTO shaft and pull it out of the tractor, being careful not to ...This week I'm repairing the power take off (PTO) on this Case Tractor. It's done loads of front PTO work so I get the front off to figure out what's up with it.If determined that the drive line is too long, follow these procedures to adjust the length: separate the two drive line halves. Connect one half to the tractor PTO and the other half to the implement. Raise and lower the machine with the 3 point hitch to find the position where the driveline is shortest. Hold the half shafts side by side and ...This is our new tiller for our John Deere 1025R. The tiller is a King Kutter tiller. Subscribe for budget hunting videos and john deere 1025R videos. edited ...1.4K. 124K views 4 years ago. You're all ready to do work, back the tractor up to the brush hog, the three point lines up easily...but you can't get the darned PTO to extend. What's happened is a...The shaft transfers rotational power from the tractor's engine to the implement, allowing it to be powered by the tractor. PTO drive shafts come in a variety of sizes and styles, depending on the tractor and the implement being used. ... This requires removing the shields from the PTO shaft and unscrewing the bolts holding the shaft in place ...No one seems to carry a shaft with especially the implement end requirements of 1 1/2" round with the 3/8" key, much less with the 1/4" holes drilled at 9 and 3 o'clock for the through bolt. ... Dec 22, 2010 / PTO shaft removal #8 . Chilly807 Elite Member. Joined Sep 13, 2009 Messages 3,272 Location Nova Scotia Tractor Kubota L3400DT ...Aug 27, 2009 · The problem is that my PTO shaft does not have a (male) spline attachment at the mower end; the shaft is attached (welded) directly to a yoke. Assuming I can get a replacement PTO that is attached to a yoke, I can't figure out how to remove the one I have from the mower. I looked in TSC at some yokes and they seem to have an e-clip to remove ... Tractor. Allis Chalmers ED 40. There's a bit more to removing that shaft than just those four bolts. Just pop the cover off and leave the shaft place. The seal should be exposed on the inside of the cover. Aug 13, 2018 / New Holland TC 30 PTO shaft removal #3. OP.The Live PTO utilizes a two-stages transmission clutch. The first stage allows you to operate the PTO shaft while you press the clutch halfway. The second stage, however, will enable you to control the PTO’s engagement. This basically separates the control of the transmission from the control of the PTO operation.Step 1: Prepare the PTO Shaft. Before you begin connecting the PTO shaft, you must ensure that it is in proper working order. Check the shaft for any signs of damage or wear and tear, such as cracked or broken pieces, bent or twisted sections, and any other irregularities. If you find any issues, you must replace the PTO shaft before proceeding.The other ends of the PTO shafts connect to the implement and they have perhaps the two most common shear pin designs. Starting with the brush hog shaft, the shear pin is a half inch by 3.5" long, grade 2 bolt with a nylock nut on the end. ... The safety shrouds for each PTO shaft are also different designs, so the removal process is ...14. Tractor. Bobcat 4058 HST / Ford 3000. I experienced the same thing as you when I pulled I my PTO shaft from my Ford 3000. It's been a while but I believe I had to remove the top cover to finally get it out. Nov 13, 2023 / Anyone ever pulled a PTO shaft out of a1974 Ford 3000 #10. OP.A power take-off (PTO) shaft is a device that allows agricultural machinery to transfer power from an engine or motor to an external implement. It is composed of a shaft, a universal joint, a clutch, and a guard. PTO shafts are used in a wide variety of applications, including tractors, combines, balers, swathers, post hole diggers, and more.Remove the Locking Pin: Grip the pin firmly with pliers or the pin removal tool, ensuring a secure hold. Apply Even Pressure: Apply steady and even pressure while pulling the pin straight out from the shaft. Inspect the Shaft: Examine the PTO shaft for any signs of damage or wear. Address any issues before reattaching.ctgoldwing said: Ok, I know its not rocket science but. . . My Normand blower came with a pto shaft that has a ring coupler on the tractor side. To engage it you have to push the ring toward the tractor while pushing it onto the spline. To remove it the ring has to again be pushed towards the tractor while 'trying' to pull the shaft back.May 3, 2022 · In this video I will show you how to remove and swap a Ford 8N PTO shaft.\#ford8n #vintagetractor #tractor Technical performance measures are used to evaluate the performance quality of a technical system. Implementing them correctly requires a close understanding of the systems in ques...Dec 3, 2021 · The EASIEST and most consistent way to measure and cut a tractor PTO shaft. Measure BEFORE connecting implement to tractor. Cut with angle grinder and ste... Spent the day working removing top off tractor to expose rear gears. Removed front loader to drop front wheel drive shaft. Had to do this to split the tractor. Not much fun and still do not have pto out of tractor. The three speed pto and power steering have made it more difficult. I can only imagine the bill at a dealership.Step-by-Step Instructions for Removing the PTO Shaft Cover. Use the appropriate size socket to remove the bolts that secure the PTO shaft cover to the tractor frame. Once the bolts have been removed, the cover should be able to slide off easily. If the cover is stuck on the frame, use a hammer and pry bar to carefully loosen the cover. Be sure ...Medicine Matters Sharing successes, challenges and daily happenings in the Department of Medicine Dr. Kieren Marr will step down from her role as vice chair for innovation in healt...Disconnect the driveline: The driveline connects the PTO shaft of the tractor to the gearbox of the brush hog. Locate the driveline and remove the retaining clips, sliding it off the PTO shaft. 6. Remove the brush hog: With the attachment secured and the driveline disconnected, carefully drive the tractor forward, away from the brush hog. This ...A overrun clutch for a Ford 8n is like a emergency break on a car. Without you can just keep rolling! Even if there is a ditch or pond in the way. This $70 p...The PTO shaft lock pin is an essential component in agricultural machinery, particularly in tractors. It serves the crucial function of securing the power take-off (PTO) shaft, which transfers power from the tractor’s engine to various implements such as mowers, tillers, and balers. The PTO shaft lock pin ensures that the drive shaft remains ...Quick run through of what it takes to switch between 540 and 1000 rpm pto shafts.

Super Star Member. Use a specialty penetrating oil* to loosen rust, let it sit, warm it up with a small torch, tap with a brass or nylon mallet, then wiggle, wiggle, wiggle. You may have to separate the two halves of the PTO shaft, leaving one half on the Squeeler, to give yourself room to manipulate the stuck half.. 2022 donruss football variations

how to remove pto shaft from implement

Replacement involves removing the old shaft and installing the new one, a task which should be performed by a professional. Structure and Accessories of a PTO Shaft. A PTO shaft comprises several parts including a yoke, cross bearing, safety chain, and shielding. Each plays a crucial role in the functioning and safety of the machinery. Safety ...The PTO shaft is a two piece shaft with the front piece permanently attached to the blower. Leave the Quick Hitch hydraulic lines attached for now, but if you have any, remove any hydraulic lines to the blower. Remove the snow blower from the Quick Hitch by lowering the blower to the ground/floor. Remove clevis pin and then raise the lever that ...On various occasions, it becomes necessary to remove the Power Take-Off (PTO) shaft from an implement. The reasons can range from the need for maintenance,Ford 2000. I've got a 1970 3 cyl Ford 2000 with live PTO. I drained the rear oil today and went to remove the pto shaft to replace the oil seal and bearing. To no luck, I wasnt able to get the shaft to come out. I'm pretty sure part of the issue is there is RTV sealant or something similar holding the housing to the tractor.This allows a lot more room to work. After the PTO is connected, move the tractor back some to collapse the PTO shaft so the 3 point linkages will reach. As far as aligning the splines, I use an alignment bar. Shove the alignment bar into the universal joint of the PTO and it makes the most stubborn turn easily.To remove a PTO shaft from a yoke, first ensure safety by disconnecting power. Then, locate the retaining pin or bolt securing the shaft to the yoke. Use appropriate tools (e.g., pliers for a spring-pin, wrench for a bolt) to carefully remove the pin or bolt. Slide the shaft away from the yoke, ensuring alignment and balance to avoid bending.Installed some new safety chains, a top link, and an over running clutch on the Ford 600 this weekend.Jul 22, 2007 · The first thing I suggest is to knock the pins out hold the shaft to the coupler. That should give you a bit more room to work. Remove the tractor's PTO shield too, if it isn't too much trouble. My PTO shafts use a spring loaded pin to hold it onto the tractor. Depressing the pin releases the shaft for removal. Step 1: Prepare the Area. The first step is to prepare the area for the task. Make sure that the tractor and the attached implement are on a flat, level surface. Remove any debris or obstructions from the area and ensure that the area is well lit. Make sure to wear protective gloves and safety glasses before beginning the task.Location. East Northport and Oneonta NY. Tractor. John Deere 4300 HST 4wd. If you mean the shaft itself, there is either a collar that you pull towards the implement while you pull the shaft off the PTO a stub. Or a button on the collar that releases the connector and again, you pull the shaft off the PTO stub. Nov 8, 2016 / Pto disconnect #3.Install the PTO Link ® Implement Coupler to the implement driveline receiver and the PTO Link ® Tractor Coupler onto the tractor’s PTO—in a snap! What used to be a long, drawn-out, strenuous task is now completed in seconds by just aligning the oblong holes and studs of the two interlocking steel couplers, giving a quick turn to finish the PTO connection, and inserting the Safety Pin.How to Remove PTO Shaft from Implement. Removal of the PTO shaft requires careful procedures to prevent injury and damage to the machinery. It is advisable to refer to the manufacturer’s manual or consult a professional. Understanding PTO Shaft’s Structure and Accessories. The PTO shaft consists of several components including the drive ...The big wrenches (1/2) go round the PTO shaft as 'spacers' , the pickle fork moves the yoke out. Add more wrenches as required to fill the gap, then tap the pickle fork again. You need EVEN pressure to push/pull the toke off the PTO shaft. TWO prybars 'might' work, though awkward.A short how-to on replacing the PTO input shaft in the British IH tractors..

Popular Topics