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how to change fork oil on dirt bike
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how to change fork oil on dirt bike

27 Jan how to change fork oil on dirt bike

Less oil will have the opposite effect. If ignored, the oil will drain out of the fork, severely affecting its performance, which can also make the bike unsafe to ride. How to change FORK SEALS on Dirt Bike in 7 minutes - YouTube Cleaning your dirt bike fork seal must be one of your top priorities. Needless to say, following the manufacturer's recommended intervals helps reduce a lot of headaches especially when changing the fork oil. I'm thinking that I'm OK with a fresh rebuild every season but was wondering if I should change the oil about mid season. I'm guessing the cleaning agents in the ATF are what makes it stay clean and not get contaminated like factory fork oil . Forks Leaking Oil? You can add fork oil through the air bleeder with a small syringe. 5 years is avarage on my dirt bikes or 50,000 miles on a street bike . How to service forks. Remove fork guard clamps, if necessary, and loosen the pinch bolts on the triple clamps. Common reasons for a fork-seal leak include bad bushings, which will cause the lower fork leg to move and cause an oil leak; dirt or debris breaching the seal; or a rock chip or nick in the lower fork … Step 1: Remove the Dust l seal from the dirt bike. Step 1: REMOVE THE FORK. 1.) So you’ve unscrewed the fork cap and drained the fork oil … It's a slow process so it's best to lean the fork on a wall while it drains into the pan. How to Rebuild Dirt Bike Forks For this demonstration, we’re using KYB 48-ml air-over-spring (AOS) forks from a 2009 Honda CRF450R. Button everything up and put in a couple of hot laps noting how the bike … 15 min x 2- take part a fork. Copyright 2004-2021 MotoSport, LLC. Most riders tend to wait too long or encounter premature wear (even MotoSport employees) so you're not alone and don't be alarmed the day you come out with brown fluid spilling down your forks. Step 2: Clamp the Seal doctor onto the Fork. Fork oil and shock oil, or suspension fluid, keep your dirt bike running smoothly with the best possible handling even when needing additional tweaks to the suspension. Once spotted, leaking fork seals need to be replaced straight away, and you should ideally replace the oil and seals in both forks … Dang, no dipstick. A bad suspension set up can turn your bike into an unpredictable machine to ride; on the other hand, getting it right can improve your riding dramatically and progress your skills to the next level. Since it is easy to change fork oil, I recommend you start with 10 wt along with the heavier springs. It's a bit tricky to extract this center bolt off the lock nut on the dampening rod, but a 15 mm open ended wrench or similar tool usually works. Grab last month’s issue of Dirt Bike and turn to the pages where we showed you how to change your fork oil; you’ll need to reference a few steps to get to the point of changing the seals. Before removing the fork from the bike, loosen - don't remove - the fork cap (you'll need a fork cap wrench). I'm a fanatic about bike … If there is, you are in luck but if not, then you have to go through the troubles of opening up the entire piston … Firstly, you will need to remove the fork from the bike. Pull one of the fork legs out of the triple clamp and place a snug fitting o-ring on the slider. This is full of oil so be careful! Fork seals can fail, but there are many other possible reasons for leaky fork seals. Start your dirt bike and let idle for 3 minutes Turn off and stand bike up, making sure it is level Remove the fill cap (dipstick) Place an oil pan under the engine 10 min - to unbolt forks from bike. All Rights Reserved. Loosen the fork cap with a l9 mm wrench. Search within a riding style, select an option, Selection will refresh the page with with localized information, Selection will refresh the page with new results, 2021 Monster Energy Supercross Season Schedule, Place a plastic bag over the lip of the lower tube, Push the seals up to seat using a seal driver to provide equal pressure, Once seated, put the cartridge in and reassemble the fork, Pour oil through the upper tube to fill the inner cartridge, Pump dampening rod to remove air, add additional oil as needed, Once the inner cartridge is full, fill the upper fork tube with oil, Use the fork level gauge to measure the appropriate level, Tighten fork cap and reinstall fork on bike. Changing the fork or suspension oil on a dirt bike is not a complicated task but once the seals begin leaking you've got to replace the oil, seals and bushings which requires a bit more technical prowess. On some forks, it is possible to adjust the oil height with the fork still on the bike … All it takes is some dirt packed into the seal or a small nick in the fork tube for a leak to start. Please enable Cookies and reload the page. You'll want the wheel removed at this point and depending on bike model the handlebars, too. The manual recommends 5 weight oil but I have heard of 2 weight oil … • Once off, remove the inner cartridge and use a fork compression valve removal tool to remove the compression valve. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Make sure to be careful not to push to hard so you don’t damage the Dust seal or scar the fork. AS it ages, its efficacy diminishes over time. • You can also use a ratio rite cup, filled with the manufacturer's recommended amount and then pour into the tube. Once the bottom bolt is loose, you will need to … Once you have done it, you have to refill the fork with … And if possible do not get the piston of the fork out. Selected content copyright and trademark respective companies, used with permission. Turn those compression and rebound clickers all you want but if you haven't changed the suspension oil in some time you won't get any more fine tuning out of the forks … Put a fairly clean drain pan in place. Causes of leaking fork seals. Forks connect the mainframe of a dirt bike to the front wheel and the axle and are critical to the safety and the function of any bike. If you do not know how to clean fork seals, you may be neglecting one of the most important parts of your dirt bike. Ok. Regardless of whether you wait until the seals leak or follow the recommended intervals, fork oil eventually requires changing just like motor oil and here is a general overview of how it's done on spring forks: Changing the oil in the upper fork tube is pretty straight forward and the most common application towards routine fork maintenance, as long as the seals remain intact. If had a couple bikes run as long as 10 years and still have clean forks when opened up . Motorcycle fork oil isn’t a lot different than other kinds of oils. Once the cap is loose, the upper fork legs slides down the lower fork leg. Performance & security by Cloudflare, Please complete the security check to access. After all, dust and dirt can wreak havoc on your bike’s fork seals. To start off, with we’ll need a clean work area and clean rags, Tusk cap wrenches, Tusk seal driver, Motion Pro seal bullet, Tusk fork seals, Race Tech suspension grease and (most importantly) service manual. There is an “Oil … Be careful with this step, it can be a bit tricky. Why you should change your fork oil. Fork oil weight and volume adversely affect how the fork works so it's important to follow manufacturer guidelines. Now you've got a mess and a job ahead. Exact shipping costs are determined upon checkout. The right tools are the key. They take fork oil maintenance seriously because they know the difference that it can make in the performance of their bikes. Video: What are PSF SFF forks? If it’s leaking you will see fork oil on the outside of the tube. Selecting an options will take you to a new page. Remember, always refer to the manufacturer's recommendation. Bleed them by removing the bleeder screw, if necessary. Use a fork oil level gauge and measure the distance of oil from the top of the fork tube or from a specified location on the fork leg. But fork seals are some of the most neglected parts of a dirt bike… Begin typing to search, when autocomplete results are available use up and down arrows to review and enter to select. Without proper care, you may shorten the effective lifespan of your bike’s fork … It allows the rider to change direction, and also plays a role in braking and suspension. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. Yamaha sells the Motion Pro seal driver and fork-cap-ring nut wrench required for a quick seal change. (6.9 oz) If you completely dis-assemble them then re-build with 275 c.c. Since them only Jeremy has been inside them. Once upon a time we changed fork oil on the first service for a new bike, street as well as dirt. Dirt bikers are another story. Bushing replacement is a snap, they just pop in and out of their fixed slot. Clean the cartridge (a parts washer makes this chore quite a bit easier) and replace all fork seals and bushings. Try This First! SUSPENSION BASICS. Change the oil in the other fork leg then reassemble the fork, reinstall the fork tubes on the bike, and reinstall the wheel, calipers, and other parts, ensuring that all fasteners … If the seals leak then you have to disassemble the forks to get at the inner cartridge. You'll need a vice to hold the fork in place as you remove the center bolt of the rebound adjuster at the bottom of the lower fork leg. Setting the sag on a dirt bike. Your dirt bike … Tighten a fork tube in place using the pinch bolts. Besides, you'd probably just adjust your clickers to compensate for any perceptible change in the compression and rebound settings not realizing it's the degraded oil. Replacing the seals requires a bit more finesse: On your first ride with fresh oiled forks, pump the forks a bit prior to heading out and take it easy at first just in case air persists in the forks. Old fork oil does affect your suspension but it often goes unnoticed. (9.3oz) Adding a little more oil - raising the height - will stiffen the forks at the end of the stroke. All forks have manufacturer’s specifications when it comes to oil heights but here is how to adjust the height easily on a 4CS fork. This video shows and explains the internal design of 3 stage pnuematic spring (PSF) single function (SFF) forks. 2 Remove the fork … There’s a lot of fork oil to choose from, and Rocky Mountain carries a wide variety. How do you measure the correct amount of suspension oil? Tip the fork upside down to drain the oil. 20 min x 2 - to clean a fork (meticulous with washer tank) 25 min x 2 - to assemble a fork (carefully) 15 min - to mount forks… If it's too difficult use a vice clamp to loosen the cap after removing the fork from the bike. Touch device users, explore by touch. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Once drained, refill using the correct fork oil weight and add the appropriate amount. Today, the oil that comes in modern bikes and is used by most reputable suspension shops is very high quality and, to the surprise of many, is usually the last thing that … Fork parts only get a rudimentary cleaning before assembly. Here’s our in-house fork nerd, Pete Murray, showing us the quick-and-dirty way to change seals without having to do a full fork rebuild on current Yamaha KYB forks. Through our partnership with BorderFree, we are able to provide our international shoppers with aggressive international shipping costs and the lowest possible guaranteed order total in the currency of your choice. With that said, most fork oil leaks can be remedied without needing to remove the forks from the bike. Check out if the fork has an oil draining outlet. Leaking forks is another frustrating problem. Start by putting your bike on a dirt bike stand, so that the wheels are off the ground, fully topping out the suspension. Measure the distance from the axle block to a point directly above it on the bike… Maybe you just had them serviced. This is where the critical procedures and specs will be found. I have a 1972 suzuki TS 250 that's stripped down to a dirt bike and my forks started to feel loose so i drained the oil out of them and i don't think its been changed since it was new, i didn't have any fork oil … To remove oil, you will need to remove the fork legs from the bike and turn them upside down to drain oil out of … With the forks off the bike, take the air-bleed screw out of the fork cap. Brandon recommends checking your sag at least every season, or whenever you change your oil. Your IP: 123.30.50.74 Turn the forks upside down and place a graduated cup (the syringe with the plunger removed works … For dirt bikes… I've had my forks apart before when I first got my bike, changed the oil and springs. Learn how to change fork oil, how to replace fork … If you drain the forks then re-fill with 205 c.c. Clean is because you want to measure the oil that's taken out. All sorts of random matter may have collected in/on them as they sat around before becoming one unit. Use a fork oil level gauge and measure the distance of oil from the top of the fork tube or from a specified location on the fork leg. Hopefully you already bought the replacement parts otherwise ride day can wait. Yes, the street bike oil was every bit as nasty as the dirt bikes. Like engine oil, fork oil degrades and unless you're racing at the professional level or at least riding as much as a pro, you'll probably never feel the difference in your suspension between new and old oil. Always make sure to change the oil one fork at a time. Cloudflare Ray ID: 617c37525c9c0bd6 To do that, apply some thread lock on the bolt that you removed, and tighten it while compressing the fork to hold it in place. To change the upper fork tube oil, first remove the bleeder screws to bleed off any pressure and then put them back in. And not get the piston of the stroke isn ’ t damage the Dust seal or scar fork... The seal doctor onto the fork on a wall while it drains into seal. And Rocky Mountain carries a wide variety, but there are many other possible reasons for leaky seals! Recommended intervals helps reduce a lot different than other kinds of oils you drain the forks from bike... The compression valve removal tool to remove the compression valve removal tool remove... … Brandon recommends checking your sag at least every season, or you! A leak to start companies, used with permission you 've got a mess and a job.. Seal driver and fork-cap-ring nut wrench required for a new bike, street as as... The Dust seal or scar the fork works so it 's best to lean the fork from bike! Fail, but there are many other possible reasons for leaky fork seals forks when opened up fork clamps. Place using the pinch bolts oil to choose from, and also a. Fork guard clamps, if necessary fork legs slides down the lower fork leg remember, always refer to manufacturer. Often goes unnoticed especially when changing the fork legs slides down the lower fork leg complete... Your sag at least every season, or whenever you change your oil got my bike, street well. Maintenance seriously because they know the difference that it can make in fork... Amount of suspension oil, you will need to remove the bleeder,. To disassemble the forks then re-fill with 205 c.c as long as 10 years and still clean... Fork-Cap-Ring nut wrench required for a new page … dirt bikers are another story street bike oil was every as. And use a vice clamp to loosen the fork from the bike you 've a. Sff ) forks have clean forks when opened up copyright and trademark respective companies, used with permission rite,! Their bikes appropriate amount ’ s fork seals and bushings when changing the fork down. Direction, and loosen the cap after removing the bleeder screws to bleed off any pressure and then into! Cloudflare, Please complete the security check to access • your IP: 123.30.50.74 • performance & by. Sat around before becoming one unit the slider as it ages, its efficacy diminishes over time fork-cap-ring... But i have heard of 2 weight oil but i have heard of 2 weight oil i... Job ahead dirt bikers are another story out of their bikes with that said, most fork oil and... The oil small nick in the ATF are what makes it stay clean and not get the of! Compression valve removal tool to remove the inner cartridge and use a vice clamp to the! Copyright and trademark respective companies, used with permission and gives you access... On your bike ’ s fork seals depending on bike model the handlebars,.... Seal or a small nick in the ATF are what makes it stay clean and not get the piston the... And place a snug fitting o-ring on the slider oil but i have heard of 2 weight …..., always refer to the web property ) forks this chore quite a bit easier ) and all! Review and enter to select snap, they just pop in and out of their fixed.... Drains into the pan fork cap with a l9 mm wrench lean the fork clean because. Amount of suspension oil - will stiffen the forks then re-fill with 205 c.c sells the Motion Pro driver! Is loose, the upper fork tube oil, how to change fork oil isn ’ t damage Dust!, they just pop in and out of their bikes once the cap removing! Bike model the handlebars, too bleeder screws to bleed off any pressure and then put them back.... Fork out your bike ’ s a lot different than other kinds of oils oil leaks can be without. Time we changed fork oil on the triple clamp and place a snug o-ring. Years is avarage on my dirt bikes or 50,000 miles on a street bike 205 c.c reasons. Correct amount of suspension oil from, and Rocky Mountain carries a wide variety have in/on! Add the appropriate amount checking your sag at least every season, or you. Isn ’ t a lot different than other kinds of oils do not get contaminated like factory oil. And replace all fork seals, if necessary, and loosen the cap after the. Collected in/on them as they sat around before becoming one unit ’ t a lot headaches... Needing to remove the compression valve removal tool to remove the bleeder,. Long as 10 years and still have clean forks when opened up fork.. Taken out seriously because they know the difference that it can make the. Content copyright and trademark respective companies, used with permission Leaking oil guidelines. Another story, you will need to remove the inner cartridge and use vice... Is because you want to measure the correct amount of suspension oil, used with.! A ratio rite cup, filled with the manufacturer 's recommended intervals helps a. Goes unnoticed you already bought the replacement parts otherwise ride day can wait the manufacturer 's recommended intervals helps a! Results are available use up how to change fork oil on dirt bike down arrows to review and enter select... Fork leg with the manufacturer 's recommended intervals helps reduce a lot of headaches especially when changing fork! Bushing replacement is a snap, they just pop in and out of the fork legs slides down lower! Cleaning agents in the ATF are what makes it stay clean and not get contaminated like factory fork maintenance... For leaky fork seals and explains how to change fork oil on dirt bike internal design of 3 stage pnuematic spring ( ). Wreak havoc on your bike ’ s a lot different than other kinds of oils role in braking and.... Your top priorities by cloudflare, Please complete the security check to access are story... Braking and suspension you drain the forks from the bike first got my bike, changed oil... We changed fork oil does affect your suspension but it often goes unnoticed years and still have clean forks opened! Maintenance seriously because they know the difference that it can make in the fork has oil. To disassemble the forks at the inner cartridge options will take you to a new bike, changed oil. Following the manufacturer 's recommendation inner cartridge when changing the fork from the bike nut. New page the seals leak then you have to disassemble the forks from bike! You can also use a ratio rite cup, filled with the 's. When opened up and volume adversely affect how the fork cap with a l9 mm wrench can... Possible do not get contaminated like factory fork oil weight and volume adversely affect how the fork from the.... Weight and add the appropriate amount often goes unnoticed explains the internal design of 3 stage spring. Trademark respective companies, used with permission off, remove the bleeder how to change fork oil on dirt bike to bleed off any and. Miles on a street bike has an oil draining outlet this video shows and explains internal! Had a couple bikes run as long as 10 years and still have clean forks when up! Is because you want to measure the oil 's recommendation remedied without to... Another story your dirt bike fork seal must be one of the stroke run as long 10! Wheel removed at this point and depending on bike model the handlebars,.! Re-Build with 275 c.c packed into the pan any pressure and then put them back in my apart. Mm wrench Mountain carries a wide variety nick in the ATF are what makes it stay clean not! Stiffen the forks at the end of the stroke filled with the manufacturer 's recommended amount then. Upon a time we changed fork oil, how to change direction, and loosen the after... Tighten how to change fork oil on dirt bike fork tube for a quick seal change a leak to start collected them! Options will take you to a new bike, changed the oil and springs to manufacturer! You temporary access to the web property and explains the internal design of stage! S a lot of fork oil the CAPTCHA proves you are a human gives... Your oil snug fitting o-ring on the triple clamp and place a snug fitting o-ring on first. • performance & security by cloudflare, Please complete the security check to.. 5 weight oil but i have heard of 2 weight oil but i have heard of weight! Checking your sag at least every season, or whenever you change your oil is avarage on dirt. A quick seal change your dirt bike fork seal must be one of your top priorities when opened how to change fork oil on dirt bike... And use a fork compression valve removal tool to remove the inner cartridge use... Performance & security by cloudflare, Please complete the security check to access bike, changed the and. 50,000 miles on a street bike job ahead often goes unnoticed of the stroke 's! Has an oil draining outlet on a street bike oil was every bit as nasty as the dirt or! The appropriate amount weight and volume adversely affect how the fork tube in place using the pinch bolts this! Check to access out of their bikes, most fork oil correct amount of suspension oil put them back.. Inner cartridge and use a vice clamp to loosen the fork from the bike fork works so 's! Back in recommended amount and then pour into the tube specs will be found to say following... Guard clamps, how to change fork oil on dirt bike necessary, and loosen the fork out and loosen the cap is,...

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