Coolant Concentration Testing
TOOL REQUIREDJ 23688 Coolant Tester (Fahrenheit Scale)
J 26568 Coolant Tester (Centigrade Scale)
NOTE:
^ Before each use, swing back the plastic cover at the slanted end of the coolant tester, exposing the measuring window and the bottom of the plastic cover.
^ Wipe the measuring window dry with a tissue or a clean, soft cloth.
^ Close the plastic cover.
^ Do not remove the clear plastic pump from the J 23688 or the J 26568.
1. Release the tip of the pump from the housing of the J 23668 or the J 26568.
2. Insert the tip of the pump into the radiator filler neck. The tip of the pump must be below the level of the coolant.
3. Press the bulb. Release the pump in order to obtain a sample of the coolant.
4. Insert the tip of the pump into the cover plate opening.
5. Press the pump bulb. Allow a few drops to fall onto the measuring surface. Do not open the plastic cover when taking readings because any water evaporation will change the reading.
6. Point the coolant concentration tester toward any light source. Look into the eyepiece. The coolant protection reading is at the point where the dividing line between light and dark crosses the scale. Antifreeze protection is the scale on the right. The temperature scale is reversed from a standard thermometer scale. Below zero readings are on the upper half of the scale.
7. If the readings are not clear, properly clean and dry the measuring surface. Conduct a new test.