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> Is there any testing I can perform to check out the various components? > The engine starts OK and the panel runs fine once the RPM gets to about 1100, but the ammeter never comes to life and all The Generators used on our small Continentals use the "A" circuit for field control. That is the field is connected to A+ inside the generator case and the regulator cuts resistance in and out of the circuit to control field current hence generator output. An accepted test to confirm that the generator is operating is to apply a ground to the field terminal. Since you've got something amiss, I'd first do a careful inspection of the wiring. Use the print that's in the maintenance manual. If you don't have one. I'll scan one or fax you a copy. Physically trace the wiring point to point using the print for a guide. Things to look for. The fuse--is the fuse intact? is the fuse holder in good condition? Is the ammeter wiring OK? No broken connections? Is it open? Rare but possible with a 50+year old instrument. An Ohm meter or other continuity tester here works. The master switch should have two connections. One opens the battery, you know that's OK since you do have electrics--how about the other connection that opens the field? check this. Now you've checked the wiring, ammeter, generator, fuse, master switch and still found nothing. Disconnect the wire going to the "F" field terminal on the generator, Make sure it's the field and NOT the "A" terminal. Tie it back out of the way and ground the generator F terminal. Take the cover off the generator brushes and move the prop. Be sure the generator armature turns you don't want a broken gear or generator shaft ruining your day. Now run up the engine, be sure to get the engine up to 13-1500 RPM so your above the coming in speed of the generator. If you have output, you know the generator is OK & your trouble could be the regulator or the wiring. If the generator does not have an output, and the brushes, comutator, etc all look OK, there is one more thing I'd try. If it has been sitting for some time there is a possibility of the generator losing its residual magnetism. I have to cut it short now. 3 of my granddaughters arrived for the weekend. If what I outlined above doesn't find something I'll get into further testing & flashing the field a bit later, Cheers: Paul NC2273H ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
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