How To Troubleshoot An Alternator On A Refrigerated Truck

How To Troubleshoot An Alternator On A Refrigerated Truck

Dealing with a malfunctioning alternator on a refrigerated truck can be challenging. Here’s a step-by-step guide to help you troubleshoot the issue:

Step 1: Initial Inspection Begin by visually examining the alternator for any obvious signs of damage, such as loose wires, cracks, or excessive dirt and grime. Ensure the alternator is securely mounted.

Step 2: Check Belt Tension Inspect the alternator belt for proper tension. A loose or damaged belt can prevent the alternator from functioning correctly. Adjust or replace the belt as needed.

Step 3: Test the Alternator Output Using a multimeter, test the alternator’s output voltage. Connect the multimeter to the battery terminals with the engine running. A healthy alternator should produce around 13.5 to 14.5 volts. Anything significantly lower may indicate a problem with the alternator.

Step 4: Inspect the Battery A faulty battery can also cause issues similar to those of a failing alternator. Check the battery for signs of damage or corrosion. If the battery is old or damaged, consider replacing it.

Step 5: Check Electrical Connections Ensure all electrical connections to the alternator are secure and free of corrosion. Loose or corroded connections can cause electrical issues.

Step 6: Test the Voltage Regulator If the alternator output is within the correct range but the battery is not charging, the voltage regulator may be faulty. Consider testing or replacing the voltage regulator.

Step 7: Replace the Alternator If none of the above steps resolve the issue, it may be necessary to replace the alternator. Ensure to use a high-quality alternator suitable for your refrigerated truck.

Still Need Assistance?

If you’re still experiencing issues with your alternator, don’t hesitate to contact us at Auto Electric Re-Builders. Our team of experienced professionals is ready to assist you. Visit us at 830 John Counter Blvd, Kingston, ON K7K 2R1, Canada, or call us at +1 613-544-7466. We’re here to help you get your refrigerated truck back on the road.