Alternators: How They Work & How To Fix Them. Case 170B Excavator.
Published at : 23 Dec 2025
My charging system is not working in this 40 year old machine. It could just need a new alternator, but it could also have wiring problems, or both. I go through a troubleshooting process and tear down and attempt to fix the alternator, plus find some other problems, and end up with a thorough understanding of how charging systems and alternators work.