bus driver Posted January 21, 2015 Report Posted January 21, 2015 My Century 2B Auto pilot circuit breaker keeps popping. (When I hold in the breaker for 10 minutes, it gets REALLY hot) .Just kidding. Anyone got Century Auto pilot experience. Wondering if a servo is binding. 1 Quote
N201MKTurbo Posted January 21, 2015 Report Posted January 21, 2015 Yes Sent from my LG-C800 using Tapatalk 2 Quote
bus driver Posted January 21, 2015 Author Report Posted January 21, 2015 Yes Sent from my LG-C800 using Tapatalk 2 OK, you got me. Got any pointers on the issue? Quote
N201MKTurbo Posted January 21, 2015 Report Posted January 21, 2015 The century 2B only has an amplifier and a servo. Either the servo is binding or you have a chaffed wire or a stuck servo. Was the autopilot behaving OK before it started blowing the breaker? Is it working ok now when it doesn't blow the breaker? Quote
bus driver Posted January 21, 2015 Author Report Posted January 21, 2015 N201MK, I just got the A/C and it has been blowing since I got it. Don't know about before. Owner passed away and plane sat for 5 years. I assume it is a servo though. Flight controls seem a bit more heavy than they should be. I have a Century 1, Century 2B and STec 60 Alt. Hold. Does the 1 and 2B use the same aileron servo? Quote
N201MKTurbo Posted January 21, 2015 Report Posted January 21, 2015 OK, there are a few things you can do. If you take off the access panel just inboard of the servo in the left wing, you will find a connector. Disconnect it and see if it still blows the breaker. If it does then remove the amplifier and see if it still blows the breaker. To remove the amplifier, remove the white knob, behind it you will find two screws. Remove the screws to remove the front panel. Behind it you will find the screws to remove the amplifier. Quote
bus driver Posted January 22, 2015 Author Report Posted January 22, 2015 Will do. Let you know what happens. BTW, my STec 60 alt. hold will not poer up. The lights will test, but that's it. Any ideas on this. Thanks so much. Quote
bus driver Posted January 22, 2015 Author Report Posted January 22, 2015 OK, there are a few things you can do. If you take off the access panel just inboard of the servo in the left wing, you will find a connector. Disconnect it and see if it still blows the breaker. If it does then remove the amplifier and see if it still blows the breaker. To remove the amplifier, remove the white knob, behind it you will find two screws. Remove the screws to remove the front panel. Behind it you will find the screws to remove the amplifier. Are you talking about a knob on the AP control panel in the cockpit or in the wing. Just so I know where/what I'm looking for. Quote
helitim Posted January 24, 2015 Report Posted January 24, 2015 My IIB has this exact same problem when I bought it. The seller said another shop had been unable to locate the source of the problem. My avionics shop spent a lot of time replacing a servo, checking the wiring and all the system components. Finally the father of the shop owner, who is now retired, was at the shop one day when I happened by and was still complaining about the problem. The old man asked a few questions and then asked a tech to go pull my control head out of the plane. He took one look at the bottom of it and realized the little round transistor looking pieces on the bottom were touching the metal brace on the frame of the mount. He put a piece of electrical tape on it and said to go try it. Problem solved. A small amount of reshaping the mount and no issues since. I'm not suggesting this is your problem but, it had stumped numerous other technicians before the old man solved the problem in about 5 minutes. 1 Quote
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