Fork seals, change on motorcycle part 2 (of 2), twin chamber

[billyman1221]

hey guys so i just finshed doing my fork but i have a question when i was part 2:57 and when i pressed it al the way in a blast of air cam throught the bleed hole and some oil is that ok then it was fine

[RockyMountainATVMC]

@billyman1221 - yes, you want them a little overfilled so the air and excess oil will get pushed out the bleed out.

[billyman1221]

man it looks pretty basic if i got the tools and a shop wants like 150 plus part to do them and tools will cost prob 70 bucks so fuck it im doing them my self

[spruland]

Whats the deal with the ktm 350 forks? I heard they have a nitrogen bladder in the fork that needs to be deflated??

[happywombatproducts]

How would I know if my forks are leaking? There seems to be oil by my front tire and some more by the dust cover, I thought when fork seals go they go all at once? What would you rate this for on a scale of 1-10 10 being the hardest to do yourself?

[RockyMountainATVMC]

@happywombatproducts - they can leak slow at first. with the right tools the job is very easy. 3

[djjbennett]

were did u get the crank shaf pully tool and the spliter and fork 1 as wel let me no pal ..im sik ov a the hand tool i need it 4 kx 85 and my dt cross ktm

[djjbennett]

were did u get the crank shaf pully tool and the spliter and fork 1 as wel let me no pal ..im sik ov a the hand tool

[retz250]

Hey i have an 08' KTM 250 Xc-f i think it has dual chamber but is there anything special about wp forks i need to know or would i be fine changing the seals myself after watching this video?

[RockyMountainATVMC]

@retz250 - there are certainly some differences, but you can do it. Just keep your manual close by.

[guitardude105]

hey nice vid, i have an 08 ktm 250sxf but it has factory connection suspension(it came when i bought it) how should i do this? just research and do it myself or can i do you think i can call factory connection? will it be easy to do by myself?

[matt23111]

i have a 2004 yzf 250 what kind of fork oil do i use and how much of it?

[RockyMountainATVMC]

@matt23111 - you have the cartridge type. The yz's went to the SSS (dual chamber ) for in 2005. Refer to your manual for oil height. I don't have the specs.

[WayneTuckyCustoms]

Hey, dude thanks for all these videos realy helps all of us young guys get all the tech info, thanks again.

[kronKrew]

wow thanks so much this looked so much harder in the manual haha this makes it looks easy

[desertrider154]

I mean chamber..inner chamber

[desertrider154]

Is it necessary to change the inner cartridge's oil. I dont have that tool to take it apart. Also when I was pushing the damper rod in and out a bit of oil came out...does that mean I now have to take it apart to get the correct amount of oil in it?

[RockyMountainATVMC]

@desertrider154 - like any oil surounded by moving parts, it can get dirty, hot and eventually break down. Yes you should change it periodically. When you compressed it, where did the oil come out? Oil crom the outer chamber will get into the holes on the top of the chamber. It was most likely that.

[mxracerTopeka]

I'm curious if you've had any feedback on changing the inner cartridge spring to a lighter weight. What improvements it made if any to initial fork movement. Or do you have an opinion on that. Does it improve high speed square edged bumps? Does it "dive" into the corner better. I've been wanting to try a lighter IC spring weight in my sons bike that I've already resprung the main springs on. It seems to me replacing the IC would be a cheap revalve almost. Thanks

[RockyMountainATVMC]

@mxracerTopeka - I can't say I have tried it. i can't imagine it doing much though.

[whoopdedolalala]

@RockyMountainATVMC

why didnt you remove the damper rod, it should be to clean. you guys really need the right vises for this. you make this look so painfull

[TheTy333]

why did you put 2 different oils in the 2 different chambers??

[RockyMountainATVMC]

@TheTy333 - Mostly because the owner of the bike wanted that oil. You can run the same in both. Some guys put the more expensive stuff in the inner chamber where all the valving takes place.  I personally doubt there is much difference between the two we used.

[johnny89racer]

Thanks for the vid guys, I've not had a twin-chamber fork apart before, gave me a better idea before I did. The one thing that concerns me is knowing exactly how much oil is left in the fork if the outer tube was not removed from the slider (I only want to change springs, not the seals). It's a bummer that the 'oil height' can't be checked.

[RockyMountainATVMC]

@johnny89racer - if you pull the inner cartridge to change the springs, it should be pretty easy to get almost all the oil out of the outer tubes. There will shouldn't be enough left in there to make any difference.

[mranderz]

I have a 2005 Yamaha XT660 X Supermotard. Is this procedure for my type of bike?

[RockyMountainATVMC]

@mranderz - i am not familiar with that bike. If it has "dual chamber' type forks, then yes.

[mdpunk21]

Hey man I've got a 1999 cr125r, its a double chamber and the skockys are Showa, they come stock with the bike. Would this work for my bike

?

[RockyMountainATVMC]

@mdpunk21 - Yes they would. The twin chamber Showa forks are almost the same as the KYB twin chambers. The steps in this video are the same. however, refer to your manual for any differences.

[XiFueledX]

I noticed you used two different brands of oil in the inner and outer chamber. Why is that? Were they different weights? I just thought that was strange.

[RockyMountainATVMC]

@XiFueledX - we used honda oil in both, just two different types. You can use the same in both. I think we put a little lighter oil in the inner chamber. I can't remember if the manual called for that or not.

[TC510Husky]

Nice job, helps illustrate everything the manual calls for.

Would you be for or against washing and purging everything with varsol prior to putting new oil in?

Thanks!

[RockyMountainATVMC]

@TC510Husky - thanks. I have seen some forks that were so dirty inside that I did flush them with solvent, but for the most part i don't. Just make sure you get all the solvent out if you do.

[dodgyplonk]

could you do a video on bleeding air out of forks?

[85ccmaster]

I have a 05 kx250, and I dont have a manule

[RockyMountainATVMC]

@85ccmaster - It would be a great investment!

[85ccmaster]

how much fluid did you put in the outside cartridge?

[RockyMountainATVMC]

@85ccmaster - it depends on the bike. refer to your manual.

[mpdpspnp]

liked the video but I was watching to see how to install the seals and they were never installed?! Did I miss something?

[RockyMountainATVMC]

@mpdpspnp - yes. you missed part 1.

[blisterguy007]

hey i have a 2005 yz250f and i cant find what size of fork seal driver i need i saw you have a manual can you help

[RockyMountainATVMC]

@blisterguy007 - 2004 through 2010 YZ's have 48mm forks.

[AtheistVendetta]

Thanks for sharing... nice video.

[sportmax1974]

how can I take apart the inner cartigride in order to shorten the legs? Thanks!!

[sportmax1974]

HI. I would like to shorten the fork legs for supermoto use. How can I take the inner cartgride apart? Thanks, great videos !!

[boobflop]

i noticed that you used two different types of fork oil one for the inner cartridge an then another type for the outter tube so is there two different types of oil you need to use or does it matter

[RockyMountainATVMC]

@boobflop - You can use the same in both. Refer to the manual for recomended oil type.

[exuberator7420]

if you can come across the oil volumes for a 07 kx 450 that would be great,, I have been able to get an 06 manual but seems the 07 manual is just an adendum to the 06 but I have been told the forks are different. could use help finding the oil volumes if anyone knows them.

[takeit58]

thank you so much for it. that was helpful!!!

[jaielet2]

good good vid thanks

[dakhracevideo]

Thanks a ton, very helpful!

[suzuki21rydr]

this is a good instruction. if im changing my springs to better suit my weight should i calculate with my body weight + the weight of my riding gear?

[RockyMountainATVMC]

yes.  either way it won't make that big of a difference.

[fattpeoplepissmeoff]

do you know why my forks would be really stiff and not rebound back when pushed down on?

[RockyMountainATVMC]

make sure your rebound clickers aren't in too far. you may need to rebuild and inspect.

[fattpeoplepissmeoff]

so should i adjust them in the negitive direction or positive because mine has little knobs on top of the fork that have a positive turn and a negitive turn

[RockyMountainATVMC]

correct

[RockyMountainATVMC]

Twin chamber type forks don't usually go off oil height. Instead they go off volume. Refer to your manual for the proper oil volume.

[dylan212121www]

I have a 2006 yz250f how much oil do i put in the outer part of the chamber

[RockyMountainATVMC]

Refer to your owner's manual. I don't have the specs.

[belenhuizar25]

very helpfull!!!!!!!!!!!

[goneyz400]

nope there the original forks

[goneyz400]

hey rocky mountain i have a 1990 cr500 is my bike equipeed with the dual chamber fork ?

[skatergmail]

I didn't know they had twin chamber then, did someone swap the forks?

[RockyMountainATVMC]

Nope. Refer to our cartridge fork videos.

[Alexgetspussylol]

i have the 08 kx450 how much oil did u put in

[RockyMountainATVMC]

That is the exact bike we used, but I don't remember. We took the specs out of the owner's manual. Please refer to the owner's manual.

[solbadguy9999]

thats the promblem here in the phil. u buy motor no service manual hahahah

[nathan672]

In the service manual it says to measure the oil height in the inner chamber? How come you do not do this step in the video?

[RockyMountainATVMC]

Each fork is a little different on where that oil height is. The point of measuring the oil in the inner chamber is to be high enough you don't get air in it, yet not so high that it is difficult to get the cap on. All the excess oil will come out either way if the other procedures are followed. The key is to not have any air in the inner chamber. Get the oil height right and it will be a little easier (less excess oil to squeeze out when putting the cap on).

[Gurbanus]

Thanks, great video!

[WmashdaProductions]

I am wondering if you could make a video about a Leak down test. it would be great if you could.

[stefanoryogacross]

Thank you!! this video is very usefull and can prevent the lost of a lot of money!

[mxchamps]

best video. thanks. very helpful to me

[dezertrider1]

Awesome! Everything i need to and the confidence to boot!

[mxracerguy]

great video! Best on YouTube. This helped a ton on my CRF fork seals.