Troubleshooting: Alternators

Q: I paralleled the alternators on the ground successfully but the pilot reported after the first flight that the electrical load balance shifted to imbalance after a short period? Why might this occur?
Tags: alternator, balance, load, paralleled, shifted
Q: I recently installed an overhauled alternator on my twin engine airplane. I have not been able to parallel the two alternators. What is the most likely cause?
Tags: alternator, overhauled, parallel, twin engine
Q: I am performing an annual (100 hr) inspection. Is there any preventative measures or things I can check to assure long life of the alternator?
Tags: alternator, inspection, preventative
Q: I recently replaced the alternator on an old airplane that had been out of service for awhile. The new alternator has higher voltage but lower than specified current output. Before I reject the alternator, what other things can I check out?
Tags: alternator, current, replaced, voltage
Q: My ammeter shows a steady oscillation back and forth. How can I cure this?
Tags: alternator, ammeter, oscillation
Q: After installing your overhauled aircraft alternator, the belt keeps coming off the pulley. What is wrong?
Tags: alternator, belt, overhauled, pulley
Q: With considerable time on my alternator, I am considering having my mechanic change the brushes. How do I know if this is necessary and is it an easy process?
Tags: alternator, brushes
Q: I suspect the rectifiers (diodes) are going bad in my alternator, what is the best way to check for this condition before removing from the airplane?
Tags: alternator, bad, check, diodes, rectifiers
Q: Shortly after changing an alternator, the rotor shorted out (burned). What could cause this? Before installing another alternator what should I check in the airplane to avoid another possible problem?
Tags: alternator, burned, cause, check, rotor
Q: Upon changing an alternator, it was determined that it had an open (burned) stator. What could cause this? Before installing another alternator what should I check in the airplane to avoid another possible problem?
Tags: alternator, burned, cause, check, stator
Q: During flight, I am experiencing an increasing amount of radio noise. The alternator has been installed for years. Any suggestions?
Tags: alternator, flight, radio noise
Q: After installing a new belt driven alternator, I am experiencing a loss of power (observed on my ammeter). What are the possible causes?
Tags: alternator, ammeter, belt, causes, power loss
Q: After installing an overhauled gear driven aircraft alternator, I am experiencing a loss of power (observed on my ammeter). What are the possible causes?
Tags: alternator, causes, driven, gear, overhauled, power loss
Q: I have installed a new unit to replace a worn out alternator, during flight the alternator will drop off line but cycling the switch will reset it every time. What can be done to eliminate this?
Tags: alternator, drop off line, replaced
Q: During flight, my alternator dropped off line and would not reset. I installed one of your overhauled units. On ground run-up the alternator worked fine but once in flight the alternator dropped off line and would not reset.
Tags: alternator, drop off line, fail, overhauled, reset
Q: I removed my aircraft alternator after many hours of operation, installed your overhauled unit, tensioned the belt properly but after starting the engine the alternator will not work?
Tags: alternator, fail, tensioned