COOLER ASSEM. 7L7749 - Caterpillar

Illustration 1 g03221396
Discharging capacitor (1) Capacitor mounting screw (2) Capacitor lead
Disconnect capacitor lead (2) from the terminal on the back of the alternator. Remove the plastic housing from lead (2) that surrounds the clip.
Touch lead (2) to the capacitor mounting screw (1). This discharges the capacitor.Note: Each time this test is done, the capacitor must be discharged.
Illustration 2 g03221556
Capacitor test (1) Capacitor mounting screw (2) Capacitor lead
Put the multimeter on the 20M resistance (Ohms) scale. Connect one multimeter lead to capacitor lead (2). Touch the other lead to capacitor mounting screw (2) .
There should be a very low resistance for a short period. Then resistance should stabilize above 100000 ohms (meter reading 0.10 or greater).
If the reading is not correct, replace the capacitor.