640Adv'03 Fork Oil Change?

Discussion in 'Thumpers' started by lefos, Jun 16, 2005.

  1. lefos

    lefos Greetings from Greece

    Joined:
    Jun 29, 2004
    Oddometer:
    6
    Location:
    Athens, Greece
    Hello,

    Has anybody done a fork oil change to the 640Adv?
    I would like to know the procedure.
    The MXMA 4860 manual describes a full service of the forks
    but I would like to know an easier way to change the oil.

    Also does anybody know the standard Oil Height for these forks?

    It must be something like 5W and 100mm height, is that correct?

    Any help would be appreciated.
    #1
  2. mr7q

    mr7q Stupid and Contagious

    Joined:
    Mar 25, 2005
    Oddometer:
    314
    Location:
    Nothern Virginia
    For a fork oil change, all you need to do is follow the steps until you get the spring off... That should be enough to drain both the fork and the cartidge of oil. Add new oil, and then, skip to the end for the reassembly instructions and you're good to go!

    I think the oil level is in the WP manual... At least that's what I used. I'll let somebody with more knowledge answer that one.

    (And fill out your profile or the locals here will beat you mercilessly!)
    #2
  3. lefos

    lefos Greetings from Greece

    Joined:
    Jun 29, 2004
    Oddometer:
    6
    Location:
    Athens, Greece
    Thanks mr7q.

    I thought it would be somethink like that.
    The manual refers to measure the Height with some special tool
    that usually I do not have.

    And I have filled out my profile. Thank you for saving me from the locals!
    #3
  4. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,566
    Location:
    Circumlocution Office of Little Dorrit
    do you need a manual? uncle creepy might stop by with a link for you. if not i will post mine.
    #4
  5. lefos

    lefos Greetings from Greece

    Joined:
    Jun 29, 2004
    Oddometer:
    6
    Location:
    Athens, Greece
    Thanks meat, but I do have a manual. All I need to know is the
    viscocity of the fork oil (I think it is 5W) and the oil height level.
    #5
  6. Stobie

    Stobie Mr. Motivated Supporter

    Joined:
    Jun 27, 2002
    Oddometer:
    2,040
    Location:
    Stanley, NC
    The manual specifies 5w at 120mm.

    Have you chosen an oil? The buzz on KTMtalk is that Silkolene causes stiction. Maxima is OK, and a lot of guys are finding that the slickest oil out there (least amount of stiction) is the Honda oil. Other guys are having good luck using Mobil 1 Synthetic ATF, which is actually about 7.5w.

    Good luck. It's actually easier to do than it seems from reading the manual, but it is really messy.
    #6
  7. ram1000

    ram1000 Long timer

    Joined:
    Feb 14, 2004
    Oddometer:
    1,883
    Location:
    Tricities Washington
    Being from the past when bikes had two rear shocks we always used ATF in our forks. I put ATF in my 2002 LC4 @ about 2000 miles and at 10500 it still doesn't leak and has not stiction problems. Next time I will try synthetic. I did have to dial the dampening down from stock- probably because of the oil being higher viscosity.
    #7