Hey Larry: I am certainly not an expert on the generator, but here is what John said: Folks:
It is very easy to test the generator on the plane. The test is difinitive. Disconnect the ground from the battery. Remove all the wires from the generator. Connect a volt meter between the armature of the generator and the generator case (ground). Connect a jumper wire from the field terminal to the generator case. Start the engine. Voltage should track RPMs and reach 13-14 volts by the time you get to about 1500 RPM (probably sooner). If this test fails connect the volt meter from the field terminal to ground and repeat. If you get a volt or two, the geerator is bad. If you get nothing flash the field then repeat the first test. John Cooper Skyport Services _www.skyportservices.net_ (http://www.skyportservices.net) Lynn Nelsen In a message dated 11/16/2009 6:31:27 P.M. Eastern Standard Time, [email protected] writes: A common problem, I know. Yesterday I noticed that when I started the plane the ammeter was not showing the charge I was used to . I revved it up and it hopped up and showed a charge. As I was flying, I began to notice it on the discharge side a bit. It went further on the discharge side when I turned something on. Obviously, not charging. I started it today and it never went into the charging area. I would like to try what I can first to find out the problem before I go the certificated (A&P) route. I am thinking that the behavior could indicate a bad regulator. Of course, the generator could be at fault, too. I presume I should be able to check generator output at the regulator to see if there is sufficient voltage? That should tell me right there... Any simple tricks are appreciated. I know we cover this from time to time, but this time it's my time! Thanks, Larry in Missouri N99340 ------------------------------------ Yahoo! Groups Links
