Special Tools
DescriptionPart NumberQty.
COOLANT TESTER (F)
HD-23688
1
COOLANT TESTER (C)
HD-26568
1

  1. Allow coolant system to cool to room temperature.
  2. Remove pressure cap.
  3. Place a few drops of coolant from the filler neck onto the prism of either the COOLANT TESTER (C) (Part Number:HD-26568) or the COOLANT TESTER (F) (Part Number:HD-23688).
  4. Hold the prism up to a light.
  5. The coolant freeze point is the mark where the dark area begins on the ETHYLENE GLYCOL temperature scale.
  6. Compare the freeze point of the coolant to the anticipated operating or storage temperatures. Replace as required. See Cooling System → COOLANT.
    1. If the indicated freeze point is less than specified on the container, replace with GENUINE HARLEY-DAVIDSON EXTENDED LIFE ANTIFREEZE & COOLANT (HD-99822-02).
    2. If anticipated cold temperatures exceed that of Harley-Davidson premixed antifreeze, replace with a mixture of de-ionized water and ethylene glycol antifreeze. Follow the directions on the container to create a mixture with a freeze point that will exceed the expected cold temperature.
  7. Install the pressure cap.