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Thread: Ducati USD fork legs

  1. #1
    Join Date
    7th June 2014 - 19:46
    Bike
    Ducati 944ST, Ducati 400SS
    Location
    Wellington
    Posts
    85

    Ducati USD fork legs

    Can someone please help me with stripping down USD Fork Legs. I'm familiar with standard Legs and need to know how these come apart before starting on them. The Bike is a 1991 Ducati 400SS with 41mm USD Forks marked 'Ducati'. No other information on them, could be Showa or Marzocchi ?
    I've undone the Fork Caps, but they only come out 15mm and then just rotate without coming out of the Leg.
    Need to replace the Fork Seals & Head Bearings for Compliance

    Thanks in advance.

  2. #2
    Join Date
    27th February 2005 - 08:47
    Bike
    a red heap
    Location
    towel wronger
    Posts
    6,522
    Push the outer leg down and undo the nut holding the top cap on. You will need to make a couple of simple tools. Google is your friend.

  3. #3
    Join Date
    29th May 2010 - 21:08
    Bike
    ducati 900ss f650
    Location
    welle
    Posts
    472

  4. #4
    Join Date
    7th June 2014 - 19:46
    Bike
    Ducati 944ST, Ducati 400SS
    Location
    Wellington
    Posts
    85
    Thanks Guys, should have Googled earlier.

    Problem now is that wherever I search, Google, YouTube etc, I cannot find the Oil Weight & Quantity for the 400SS. The Forks are SHOWA, branded as Ducati and are non-adjustable.

  5. #5
    Join Date
    29th May 2010 - 21:08
    Bike
    ducati 900ss f650
    Location
    welle
    Posts
    472
    I don't know if the 400 is the same but 900ss is 440 cc and the 750ss is 457cc of ATF SAE 10w20 or fork oil SAE 7.5

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