I have 2 leaking GPR dampers - is it possible to service them myself?

Discussion in 'Equipment' started by men8ifr, May 13, 2011.

  1. men8ifr

    men8ifr Been here awhile

    Joined:
    Jan 28, 2008
    Oddometer:
    383
    Location:
    Midlands UK
    Anyone else done this and was it successful?

    I don't think there is a rebuild kit for the GPR's i.e. seals but they are all plain O rings.

    Sending both of them off is a bit $$$ (£££) for some-one else to replace the orings.

    Both of the dampers are a few yesrs old but I'm a bit miffed they are both leaking.
    #1
  2. Mercury264

    Mercury264 Once you go Triple...

    Joined:
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    23,008
    Location:
    Masshole
    Mate had one leaking - he contacted them, not sure of the exact details but I am pretty sure they replaced it with a new one.
    #2
  3. Treewakr

    Treewakr throttle junkie

    Joined:
    Aug 20, 2007
    Oddometer:
    36
    Location:
    land of cheese,trees, and 2nd gear singletrack
    I've rebuilt my GPR damper a couple of times. They are pretty simple and straight forward. Just find the right size o-ring and you're good to go. Refilling the unit with oil is the most time consuming part. Add oil slowly and move the lever back and forth to work all the air bubbles out.

    Also, changing oil viscosity just a little lighter or heavier makes a big difference in performance!
    #3
  4. KTM450SX

    KTM450SX Been here awhile

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    Bend, Oregon
    Don't GPR's have a lifetime warranty?

    I only owned one but I thought it did. ( I don't use any stabalizers anymore )
    #4
  5. YamWOW!

    YamWOW! Been here awhile

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    Oct 25, 2008
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    #5
  6. men8ifr

    men8ifr Been here awhile

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    Jan 28, 2008
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    Location:
    Midlands UK
    Yeah we get screwed over here (UK) a service is £55 ($80-90) in the US it's $25.

    I've never seen any mention of a first service free so I don't think we get that either.

    Better get the O ring kit out - I've tried once to repair one damper but it's still leakign though may be from the adjuster shaft - i did not replace the O rings on that i did not think it would leak there.

    It was a pain to get all the air out - I was going to try and submerge the unit in oil and re-assemble it should hopefully be easier.
    #6
  7. malsin

    malsin Adventurer

    Joined:
    Aug 30, 2003
    Oddometer:
    83
    Location:
    Kansas City
    My GPR is leaking yet again, after two free redos by GPR after I paid for service (with me paying the shipping so not really free). Unit lasted two years before it leaked. Now it leaks on day one of riding after getting it back. Each

    Here are two items that may help anyone else that comes across this thread.

    Picture of a GPR disassembled and barebones instructions. I'm less nervous about trying the service myself. I figured I would open the top and have springs flying everywhere ...
    http://www.georgiaoffroad.com/forums/viewtopic.php?f=17&t=47520

    GPR refill and bleeding instructions that they used to have on their site. I saved a copy way back when and now it isn't posted anymore. So here is my copy of their document:
    http://home.everestkc.net/malsin/Motorcycle/rfs/GPRAirBleedingInstr.pdf
    #7
  8. luv2lean

    luv2lean not lost til out of gas

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    1,014
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    East of Sacramento
    Thanks Malsin for the useful instructions. It looks fairly simple. Anybody found a good source for the o-rings?
    #8
  9. ndrordr

    ndrordr n00b

    Joined:
    Oct 9, 2007
    Oddometer:
    6
    Location:
    Fredericksburg, VA
    Anyone that's done this know what the size of all the little allen screws is? I am in need of re-oringing mine, but none of my metric or sae allen wrenches fit.

    Any help is appreciated.

    Rob
    #9
  10. men8ifr

    men8ifr Been here awhile

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    Jan 28, 2008
    Oddometer:
    383
    Location:
    Midlands UK
    I will have to try again - I'll try to take some pics and let you know O ring sizes etc.

    Re the allen bolts all I know is it's a U.S size and was standard in a small set of allen heads I got in the UK so should be very easy to find in the U.S. Also re the O rings a $10 O ring kit with say 20-30 different sizes should have all you need.

    Regarding the re-filling and getting air out all I do is fill as much as possible and re-assemble then turn the unit upside down, remove the 2 small silver cross head screws and pour a bit of oil in each then move the damper arm slowly left to right adding oil at each screwhead for 20min and all teh air should be out. Check by setting the damping to max and moving the arm by hand left to right - you should feel no free play in the arm around the centre.
    #10
  11. de Razendebol

    de Razendebol n00b

    Joined:
    May 15, 2010
    Oddometer:
    6
    Location:
    Canada Ont Waldemar
    Okay, it is easy diy but they don't sell the o ring kit, just measure the seize with a calipher,
    all standard seize, fill oil with a syringe, good examples on you tube how to do it
    got mine gpr 4v dirt 2 years and start leakingwill take it apart and post the seize
    #11