Alternator / charging problem

[GARY MINKER]

Do you have dual ammeters? Do they both crap out? Vibration is the ticket it seems. The alternators to not have have a common ground but the battery bank does. The alternators use shunts to meter with and you may actually be charging but your metering may be bad. Go on Ebay or Grainger and purchase a DC clamp on ammeter and drain the batteries a bit and high idle the rig and measure everything and compare it to all the metering plus use a good quality DC Voltmeter. Don't get fooled in to thinking you have a problem until you verify with alternative metering that you really have a problem and not just a metering error. Gary 1958 PT-40 --- On Tue, 10/6/09, SteveQ wrote: From: SteveQ Subject: [WanderlodgeForum] Alternator / charging problem To: WanderlodgeForum@yahoogroups.com Date: Tuesday, October 6, 2009, 7:15 AM Last night I moved the coach from home to work. When I started it there was no alternator charge, usually there is about a two second delay from start to charge showing on the gauge. On the trip I hit a bump and there was charge for about 30 seconds then none. Both alternators are new as of three years and about 20,000 miles. To me it sounds like a ground problem. Also I ran the generator and the coach charge came up to about 10 amps Where to start to solve the problem? Thanks Steve Quandt 1993 PT-40 Iron Mountain, MI