PLATE 5433705 - Caterpillar

and retest the alternator charging system.STOP
NO - The voltage output does not rise.Repair: There is an internal problem with the alternator. Repair the alternator or replace the alternator.STOPTest Step 9. TEST FOR UNDESIRABLE CURRENT FLOW IN THE ALTERNATOR CHARGING SYSTEM.
Turn off all of the accessories. Turn OFF the system by pressing the OFF/RESET button on the ECS.
Clamp a 9U-5795 AC/DC Current Probe or the 225-8266 Ammeter Tool Gp around the main ground cable. Clamp the tool with the positive side away from the battery. Reset the probe (zero) before you clamp the probe around the wire. Read the current on the meter. Make a note of the current that was measured.Expected Result:The current is below 2 A. The "Yes" selection is dependent on the presence of a main disconnect switch on the generator set that is being tested.Results:
YES - WITH DISCONNECT SWITCH - For generator sets with a main disconnect switch, the current is below 2 A. Proceed to test step 10.
Yes - WITHOUT DISCONNECT SWITCH - For generator sets without a main disconnect switch, the current is below 2 A. Proceed to test step 11.
NO - The current is above 2 A.Repair: There is an internal problem with the alternator. Repair the alternator or replace the alternator.STOPTest Step 10. MEASURE THE CURRENT OF THE SYSTEM BY USING THE MAIN DISCONNECT SWITCH
Turn the battery disconnect switch to the ON position.
Connect a multimeter across the disconnect switch terminals. Connect the red lead to the terminal on the frame side. Connect the black lead to the terminal on the battery side. Use the "10A" connection in order to avoid damage.
Turn the battery disconnect switch to the OFF position and read the current. Make a note of the measured current.Note: The standard acceptable current draw is 50 mA.