Well, if you rember, sometime before Christmas I had the alternator quit charging on my YJ. Over the Christmas weekend I took the whole charging system apart, cleaned all the connections and tightened the belt. This worked OK... until last Monday, anyway. On the way to work, I look down and the Check Engine light is on again. Looked over at the volt gauge, and sure enough, not charging again. I just knew it was too good to be true. Anyway, continued on to work and had my boss get hold of the service manager at the local Dodge store. Borrowed the factory troubleshooting manual for the charging system(it was throwing a code
41 'generator field not switching'). Spent about a 1/2 hour with a multi-meter and a couple of wrenchs to find that I had too high of resistance in the field circuit inside the alt. Removed the alt from the Jeep and took it to a place I know that rebuilds them. After inspection, it was determined that the brushes had worn the commutator rings down so far that the brushes were not contacting them anymore. Glenn says this is a common fault with the ND alternators. He installed a good used rotor and a set of brushes, changed me $50 and sent me on my way. Now, this morning when I get to work, I'll reinstall the alt. and be good to go again...*and* I have a lot more confidence in this repair than I did the last one.-- Old Crow '82 Shovelhead FLTC 92" 'Pearl' '95 Jeep Wrangler YJ TOMKAT, BS#133, SENS, MAMBM, DOF#51, SPUNGER#2