since 1940

Aircraft Alternator Frequently Asked Questions

What is the current part number version for my alternator

What alternator goes on my airplane?

Many older Prestolite (Electrosystems) alternators have been improved and have updated part numbers. The following Acrobat document from Electrosystems contains the old and replacement part number listing.

Link to Application Information

What is the difference between the ALT 8400 series and the ALT 8500 series alternator

The 8500 series are a re-designed replacement for the 8400 series alternator that incorporate an improved slip-ring end bearing.

Sky Ranch Alternator Charging System Checker Windows Software   Step-by-step instructions for diagnosing alternator charging system problems. Alternator types, testing. Regulator types, pin-out diagrams, mounting diagrams, troubleshooting information. Download demo Tell me more

Sky Ranch Alternator Charging System Checker Windows Software. Step-by-step instructions for diagnosing alternator charging system problems View Screenshot   More information

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Disclaimer: sacskyranch.com contains abundant information relating to aircraft maintenance. The information provided  is not intended to supercede or supplement the F.A.A. approved  maintenance and/or operator’s manuals. Those F.A.A. approved manuals must be utilized when performing maintenance and/or operating aircraft.