Advertise on Bikeforums.net



User Tag List

Results 1 to 10 of 10
  1. #1
    Senior Member
    Join Date
    Mar 2007
    Location
    Columbus, OH -- Randolph, NJ
    Posts
    226
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Fork won't hold air

    So I have an 04 (I think) Rockshox Duke SL Air. I did notice that it was leaking air very slowly, meaning I'd have to pump it up once a month or so, but recently it won't even do that. Now it doesn't hold air at all.

    So how difficult would it be to replace the seals? I do all of the work on my bikes, but have never even attempted to play with a fork like this. What sort of tools and fluids would I need? Should I just say screw it and bring it to the shop?

    Thanks,

    Matt
    Specialized Tarmac Comp
    Trek 520
    Trek 4900

  2. #2
    Pwnerer Wordbiker's Avatar
    Join Date
    Jun 2005
    Location
    Pagosa Springs, CO, USA
    My Bikes
    Road, MTB, Cruiser, Chopper, BMX
    Posts
    2,900
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Check out the service manual here.

    If you have the needed tools (or want to buy them), just changing out the O-rings for an air leg is really not tough.
    Quote Originally Posted by ahsposo View Post
    Ski, bike and wish I was gay.

  3. #3
    Senior Member
    Join Date
    Mar 2007
    Location
    Columbus, OH -- Randolph, NJ
    Posts
    226
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    So will I just need an O ring service kit? It sounds easy enough to do that. Thanks!
    Specialized Tarmac Comp
    Trek 520
    Trek 4900

  4. #4
    Senior Member BCRider's Avatar
    Join Date
    Mar 2008
    Location
    The 'Wack, BC, Canada
    My Bikes
    Norco (2), Miyata, Canondale, Soma, Redline
    Posts
    5,435
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If they are JUST Orings then you can get replacements at most decent hardware stores. Orings use an odd number convention for sizing so take out the old ones and use it to compare the new ones to so you get the right ones
    Model airplanes are cool too!.....

  5. #5
    Pwnerer Wordbiker's Avatar
    Join Date
    Jun 2005
    Location
    Pagosa Springs, CO, USA
    My Bikes
    Road, MTB, Cruiser, Chopper, BMX
    Posts
    2,900
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by mkauffman View Post
    So will I just need an O ring service kit? It sounds easy enough to do that. Thanks!
    Yes, although you may find many of the O-rings at a hardware store, I'd still buy them through RockShox. It'd be a real hassle if you missed spec on one of them and had to tear the fork down again. Some forks will also include proprietary parts that you won't find anywhere but RockShox.
    Quote Originally Posted by ahsposo View Post
    Ski, bike and wish I was gay.

  6. #6
    Senior Member
    Join Date
    Mar 2007
    Location
    Columbus, OH -- Randolph, NJ
    Posts
    226
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I went ahead and ordered the o-ring replacement kit, figured I may as well just replace them all.
    Specialized Tarmac Comp
    Trek 520
    Trek 4900

  7. #7
    Junior Member
    Join Date
    Sep 2004
    Posts
    23
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    (Apologies in advance for cross posting...)
    I have been having the same problem with my Duke. Recently left the bike hanging upside down in a friends garage adn the oil leaked out. Would this be an indication that seals need to be replaced, or that the air valve is loose...?

  8. #8
    enginerd jeff^d's Avatar
    Join Date
    Oct 2004
    Location
    Redlands, CA
    My Bikes
    Surly Steamroller, Kona Unit, Trek 520
    Posts
    265
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by cbPDX View Post
    I have been having the same problem with my Duke. Recently left the bike hanging upside down in a friends garage and the oil leaked out. Would this be an indication that seals need to be replaced, or that the air valve is loose...?
    I hung my Reba upside down and lost the oil. After finding all the drained oil, I discovered the top cap on the right leg was slighty loose. Don't know if this was from the factory, or from using the PopLoc, or some other evil...

    My LBS suggested that I take it apart, clean everything, and replace the oil before replacing any seals. The fork is less than a month old and I didn't want to send it to RockShox. I'll be taking it apart this weekend.

  9. #9
    my brain hurts! fosmith's Avatar
    Join Date
    Mar 2008
    Location
    Oak Knoll
    My Bikes
    Numerous bicycles.
    Posts
    679
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    did you try tightening or replacing the schrader valve core first? start cheap....

  10. #10
    Junior Member
    Join Date
    Sep 2004
    Posts
    23
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I actually rebuilt the fork. No new o-rings but a new valve (the stem was broken). Took it all apart, cleaned, reseated the boot on one side (which I think may have been a problem). Now I have an issue where when compressed it sounds/feels good. If I am just rolling over washboard I get a clunking that sounds like a loose headset. It is like the fork is topping out hard. It is like it isn't 'acitivating' over the little bumps. Was rattling like mad during last nights short track race! Any ideas, suggestions? (Sorry for hijacking "kauffman" - I'll start a new post if folks think it is more appropriate.)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •