Rockshox Argyle blown? Need help...

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Rockshox Argyle blown? Need help...
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flag ZenkiS14
Posted: Feb 8, 2014 at 18:03 Quote
I have a mint green Argyle 409 fork, currently set at 100mm. Road hard all day at Rays MTB in MKE today and one of the last runs the fork let loose. So it still has good pressure in the chamber, but 70mm or so of the travel stroke is super easy and not feel pressured at all. Then it finally hits a point where it feels like it has some catch.

I'm assuming I blew something up. But not sure where to start. The only internal fork maintenance I am experienced with is changing spacers for travel height. Don't mind tearing into it, but I don't have a clue where to start, what to check,or what replacement parts to buy.

Thanks guys.
flag Kiwiplague
Posted: Feb 9, 2014 at 0:31 Quote
So are you only getting 70mm of travel out of the fork? Sounds like it may be rebound oil leaking into the lowers, which is caused by bad seals. Let all the air out of the fork and try to compress it. If you still only get 70mm, then you definitely have an oil leak, which requires a service on the fork. If you have never done a service, then you are likely to be overdue for one.
You will need a seal kit, some oil for the damper, some oil for the splash lube and some snap ring pliers and a good read through this service manual - http://cdn.sram.com/cdn/farfuture/xbxuQEpdkBmJdQ16n0Kpua0zxa-NELqa05ZWhJA-6wc/mtime:1372788148/sites/default/files/techdocs/tm_my102.pdf.
flag Stash-of-Bikes
Posted: Feb 9, 2014 at 10:12 Quote
i just got a set of argyles and think something similar has happened
i let all the air out to check movement and get about 60mm travel before they stop hard, don;t know what they are hitting?
is this something to do with damping cart?
flag Kiwiplague
Posted: Feb 9, 2014 at 15:39 Quote
The o-ring seal on the damper shaft fails and lets the damping oil drain into the lowers. Since fluids are not compressible, the fork is unable to utilize it's full travel. This will also mean that the motion control damper won't work properly either (if you have one), an the rebound will start to play up as well, as the oil level will now be too low for either to work correctly.
flag ZenkiS14
Posted: Feb 9, 2014 at 20:03 Quote
I'll have to post up a video for you so you see what I mean. But in resting position, the fork sits at 70ish mm of travel. So I can lift it up, and pull it out to full 100mm extension....does that make sense?

Are problems like this mostly found on the dampner side or the air spring side?
flag ZenkiS14
Posted: Feb 10, 2014 at 15:27 Quote
Ok, here is the video of the symptoms. What do you guys think?

So after a great trip to Ray's MTB Park in Mke, this is what condition I left my Argyle in. It compresses down, then doesnt come up the full stroke. Im sure it needs seals and a rebuild, just not sure what parts cause this. My internal fork work experience is minimal, but not afraid to tear into it. Just need to know what to expect to find, and what to expect to replace. Thanks guys!

http://youtu.be/6tayiVC2WFc

[YT=http://youtu.be/6tayiVC2WFc]

http://youtu.be/6tayiVC2WFc
flag Kiwiplague
Posted: Feb 10, 2014 at 17:20 Quote
Looks like the air seals have failed as there doesn't look like anywhere near enough air pressure to get them to extend to their full extension. What pressure do you usually run? Do you have to top it up often?

Rockshox forks are super easy to work on, just need to take your time and follow the instructions closely. The seal kit will come with new wipers and foam rings as well, so that will sort out the minor leakage as well.
flag ZenkiS14
Posted: Feb 10, 2014 at 19:31 Quote
Kiwiplague wrote:
Looks like the air seals have failed as there doesn't look like anywhere near enough air pressure to get them to extend to their full extension. What pressure do you usually run? Do you have to top it up often?

Rockshox forks are super easy to work on, just need to take your time and follow the instructions closely. The seal kit will come with new wipers and foam rings as well, so that will sort out the minor leakage as well.

Never had to add air to it, was feeling perfect and riding awesome up until this weekend. Full weekend of hard riding and one good solid hard crash, so I'm sure something let loose. Should I be looking for broken parts on the air spring side I guess?
flag Kiwiplague
Posted: Feb 11, 2014 at 0:36 Quote
Only way to know for sure will be for you to take the fork apart. Something is definitely not right in there, but without seeing inside it, it is too hard to say for sure what has let go inside.
In saying that though,I would still suspect the seals in the air spring being the culprit.
flag ZenkiS14
Posted: Feb 12, 2014 at 6:45 Quote
Yea, Im thinking about just buying a whole new Air Spring Assembly, and replacing the seals/wipers while im at it
flag ZenkiS14
Posted: Feb 15, 2014 at 12:08 Quote
Well, I took it apart, never found anything that was a clear sign of it being broken...Although the bottom of the lowers looks rather funny. Nothing seems to be broken, but oddly shaped. Here's the pics, what do you think?

Unsecure image, only https images allowed: http://i228.photobucket.com/albums/ee147/KyleCrangle/20140215_135835_zps5sl4p09z.jpg
Unsecure image, only https images allowed: http://i228.photobucket.com/albums/ee147/KyleCrangle/20140215_135934_zpso5ngotiy.jpg
Unsecure image, only https images allowed: http://i228.photobucket.com/albums/ee147/KyleCrangle/20140215_140121_zpsspgvr7lm.jpg
flag Kiwiplague
Posted: Feb 15, 2014 at 13:29 Quote
The black things look like the bottom out bumpers, but they shouldn't be jammed down inside the holes in the lowers though. They are a flat circular piece of hard rubber with hole for the shafts to go through.

photo

Can't see them on your work bench with the rest of the fork internals, so I'm assuming that's whats stuck down inside the lowers.
flag ZenkiS14
Posted: Feb 15, 2014 at 16:21 Quote
Kiwiplague wrote:
The black things look like the bottom out bumpers, but they shouldn't be jammed down inside the holes in the lowers though. They are a flat circular piece of hard rubber with hole for the shafts to go through.

photo

Can't see them on your work bench with the rest of the fork internals, so I'm assuming that's whats stuck down inside the lowers.
hmmm....ok, that would make sense actually. The other side, the damper side is fine, and you can see it laying flat.

But the one on the air spring side is all wadded up I guess and stuffed down into the holes. So I guess I should replace that as well. I cant read that picture you put up, do you have a part number for them?
flag ZenkiS14
Posted: Feb 15, 2014 at 16:32 Quote
Yep lol Nailed it. Thanks for all your help man! I appreciate it.

Unsecure image, only https images allowed: http://i228.photobucket.com/albums/ee147/KyleCrangle/20140215_182708_zps7kyfqyo6.jpg
Im going to be ordering a new Solo Air assembly, a new set of those black bushings, a bolt kit, and a set of Enduro wipers and seals. Should get it back up to par!
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