Front Fork Tubes Fluid question

Discussion in 'Softail Models' started by zoood, Apr 24, 2015.

  1. zoood

    zoood Junior Member Product Contributor

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    I have to replenish the fluid that goes into the front fork tubes. However, I dont know the amount and I dont know if more is required, because my front tubes are 2"s over stock and the tube sizes are 41mm. Also what type fluid and what is the required viscosity?
     
  2. Jack Klarich

    Jack Klarich Expert Member

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    Heritage holds 12.9 oz type E if that helps:D
     
  3. tourbox

    tourbox Senior Member

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    A chart I have shows Wet @ 7.75 oz.,Dry @ 8.50 oz.. That's for L77-96 FLs.
    My 95-96 FL manual shows the same. With 2" over I wouldn't put more than an extra 1 oz.
    You may want to add or subtract to get the feel you want. As far as weight Type E is 10W IIRC and Type B is 15W.. Heavier weight= stiffer ride.
    tourbox
     
  4. Dan.1977P

    Dan.1977P Active Member

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    Use Type E (or 5w) and measure what comes out and put that much back in
     
  5. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    I agree here with the provision that you measure the air gap above the fluid level on both tubes and adjust the low one so it is within 1/8" of the higher one.

    Button it up and ride it. If it feels too harsh or stiff, then remove 1/4" of fluid from both sides and see how that is. Repeat once if necessary. If still too stiff, then you will have to go with a lighter grade fluid.

    Cheers,

    TQ