How To Fix a Lower Fork Tube Leak On a Dirt Bike

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We demonstrate how to successfully rebuild the lower fork tube on a 2015 KTM 300XC-W. Having your lower fork tube leak where it threads on to the casting is very rare, but if you are experiencing this problem this video will help. The process will be the same for pretty much all bike models. It's always good to have your bikes specific service manual on hand to follow the procedures and have access to torque specifications. Get all your motorcycle fork rebuild needs at www.rockymountainatvmc.com.
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Пікірлер: 44

@harryzampetakis7279 4 жыл бұрын

Many thanks! Absolutely helpful! Need to get mine serviced for this... Now I know what exactly is needed to be done! 👍

@hagayharel6640 3 жыл бұрын

Hi. I would like to see a video of how to take it apart from the locktite at first

@leukefilmpjes9681 Жыл бұрын

Just heat it with a paint dryer.

@jamessonger3 6 жыл бұрын

id like to see a video on how they color those like pro circuit....

@ronless5169 5 жыл бұрын

Where is a source for these WP o-rings? They do not show on the KTM microfiche on RM ATV/MC.

@keanelofgren1502 4 жыл бұрын

I have a problem with the fork leaking from the top, I replaced the bottom seals and they don’t leak anymore(thanks to you) but I would like tips on how to eliminate leaking from the top of my fork. Thanks

@terraviewfarmsstables3311 6 жыл бұрын

Could you do a video on getting servly stuck cv joints out on an atv.

@jonnoMoto 6 жыл бұрын

Huh. Didn't know that could happen. Cheers!

@jlfabricatorful 5 жыл бұрын

I have a few bent fork tubes on the shelf but the axle clamps are good. Can just the tubes be ordered for replacement? 05 yz250 and 07KX250.

@umpquahoward 2 жыл бұрын

I have a 2001 KTM 400 exc , Both forks have the compression adjuster on top and rebound on each bottom, I noticed while adjusting the rebound with the screw on the bottom both forks they seem to seep oil at the screw. Any Ideas? is there an oring?

@nikolaosberatlis3942 Жыл бұрын

Is there a set screw on the fork lugs that you need to remove first?

@Gizzard4400 2 жыл бұрын

Can I use any o ring for the seal because I can't find an OEM ring for it

@aaronmarzec2018 5 жыл бұрын

Hello! I just picked up a 2001 KTM 200 EXC for $1000. I’ve converted to the 2005 subframe, one piece rear fender, tossed on a 2015 150SX FMF Gold Series Fatty Pipe with FMF Q-Series Spark Arrestor, and literally every single thing is now BRAND NEW on the bike converted to 2007-2015 parts; however, I need to get the factory soft exc suspension serviced. I need it to be able to handle upper- B level Hare-Scrambles, B VET class Motocross and same class for Enduros. I basically would consider it a GNCC/Moto setup? I currently have the 43mm WP forks from the 2001, as well as the 2001 shock. I’ve heard of people tossing in newer CRF250/450 Showa forks or newer Yamaha KYB SSS forks instead of “wasting their time with the WP forks. I would get the stock rear shock sprung and valved for my application. Do you think it would be better to valve and spring the current 43mm WP and stock shock for what I want, or would I be better off with the Showa/KYB SSS and revalve stock shock? Toss on a newer KTM shock? Any advice would be greatly appreciated.

@medveds1 4 жыл бұрын

You guys rock!! Thanks heaps for this info.

@rmatvmc 4 жыл бұрын

Thanks for checking it out!

@medveds1 4 жыл бұрын

@@rmatvmc I've tried to pull mine apart, removed the set screw, but still she don't want to come loose. Any ideas, do I use heat?

@medveds1 4 жыл бұрын

@@rmatvmc P.S.I went out and bought a heat gun, it worked. Thanks again.

@nikolaosberatlis3942 Жыл бұрын

What brush do you use to clean the threads?

@vwseb007 5 жыл бұрын

Hi. How open the fork tube? I warm it but it didn’t turn. I don’t want to break something. Is that very hard closed? Thx

@emiliojopillo3774 3 жыл бұрын

Hi. How i would do of my fork the fork cover bolt is leaking.

@veen9670 2 жыл бұрын

My fork tube unthrded itself and completely separated from the axle thing on my gsxr 1000 while I was riding it now idk what to do no fork oil even came out when it happened I'm guessing I can't just thred it back on

@composetproductsl.l.c.dela2844 3 жыл бұрын

Hi, Thanks for the video. The axle clamp on my 2009 KTM 450EXC has cracked. Fork oil is weeping through the casting on the inside of the axle clamp bore. Any idea where I can source a replacement axle clamp?

@rmatvmc 3 жыл бұрын

You can check the OEM parts finder to see if they have it there or your next best bet is eBay or something similar to that. You can check the OEM parts here: www.rockymountainatvmc.com/oem-parts/KTM

@jenssolbjrg5042 6 жыл бұрын

Hi, im trying to fix a leak from the seal on a Øhlins front fork, im trying to use seal mate, but it dosen't work. Do you have any tips?

@rmatvmc 6 жыл бұрын

*Jens Solbjorg,* yes. Seal mate's can work sometimes. Otherwise, replacing the seal is your next best option.

@davetscantech 6 жыл бұрын

I believe some forks have set screws holding the lug onto to tube I would also remove the o ring before cleaning.

@doublefeed732 6 жыл бұрын

Dave Taschuk I think there was and they just failed to show that part...why, because for one: that fork stanchion came off wayyy to easy so clearly they already had it disassembled lol and the other reason is because there was a hole for a set screw that hole wouldn’t be there for nothing.

@rmatvmc 6 жыл бұрын

*Jean Splitter,* Correction. This had never been disassembled prior to being fixed. It was that easy to disassemble. This lower fork does not have any set screws. Those holes you are seeing are for the bolts that hold the fork guard on. This was pretty rare that the lower fork was that loose. Not all would be this easy. About removing that o-ring yes, good call *Dave Taschuk!* Thanks

@ClarkOnVacation 4 жыл бұрын

@@rmatvmc KYB forks do have a set screw that is peened over, not that these are KYB but just saying. A video would be super helpful as mine are leaking from the bottom.

@Shipman37x 5 жыл бұрын

I need help. The lower seal is leaking and I need to remove the stanchion but there is a set screw I need to loosen but Idk if it's a Phillips screw or a special tool is needed. It's a 2005 yz 250 2t

@aaronmarzec2018 5 жыл бұрын

Shawn Shipman is it not easy to tell whether or not it is either?

@HighGrade_FireBlade 2 жыл бұрын

The thread locker doesn’t create a seal, it just prevents the stanchion from coming loose. The o-ring creates the oil seal. If the manufacturer meant for the thread locker to creat the seal they would have used ptfe thread sealant instead.

@paytonrandall8853 2 жыл бұрын

Is that seal on Rocky Mountain Bc I can’t find it in the oem?

@rmatvmc 2 жыл бұрын

Yes, we should have the seals for your bike. Click the link below and enter your bike's year, make and model to see all the fork seals we carry that will fit your bike. www.rockymountainatvmc.com/parts/dirt-bike-fork-seals

@rstwofive 5 жыл бұрын

Rocky Mountain ATV, where are you finding these mystical O-ring part numbers?

@rmatvmc 5 жыл бұрын

You will need to go into the OEM schematic for your bike to find the o-rings. The first link in the description should get you started on the right track. Hope this helps. Thanks!

@rstwofive 5 жыл бұрын

@@rmatvmc the OEM manual doesn't show the fork lug removed from the chrome stanchion.