---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Sat 12/23/17: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:54 PM - Alternator will not put out current (John Miller) 2. 09:11 PM - Re: Alternator will not put out current (Bob Turner) ________________________________ Message 1 _____________________________________ Time: 07:54:29 PM PST US From: John Miller Subject: RV10-List: Alternator will not put out current Fellow RV10 guys. I am ready to fly the RV8 I have been building for the past 5 years, but I have an alternator issue maybe one of you can help with. The alternator I have installed is an Ultima (with internal voltage regulator) from O=99Reilly=99s auto parts store. My next door hangar mate has an RV7 with the same alternator setup. When I did my first ground engine run on Thursday, all worked fine except the alternator would not put out voltage. I double checked my connector plug wiring against my hangar mate's, and and made my connector wiring exactly the same as his is. Then I confirmed that I had 12v (with alt field switch on) to each of the 2 connectors in the plug, plugged it into the alternator, and ran engine again but no voltage increase with the alt field switch on. With the alt field switch, there is no voltage to the connector, but there is batt voltage showing at the alternator output wire with the batt switch on. Friday, I pulled the alternator off and took it back to O=99Reilly =99s. It bench checked ok on their alternator tester. I also confirmed on their tester that the 2 connectors had 12v to them - it did. Then I had them order a new alternator anyway and it bench checked ok before I left the store.. Put the new alternator on this am. Ops checked it this afternoon with an engine run and also ran a temp lead from the alternator output connector to a voltmeter. The alternator output never went above the battery voltage of 12.7v with the alt field switch on. Thinking it might be the connector plug that plugs into the back of the alternator, I changed out that plug for an older one I had with the original Denso alternator I had on my RV10. I confirmed that I had 12v to the 2 connectors with alt field switch on and ran the engine again - no voltage increase again! I am at wits end trying to get the alternator to put out voltage when the engine is runningany of you have suggestions? Thanks - Grumpy N184JM ________________________________ Message 2 _____________________________________ Time: 09:11:39 PM PST US Subject: RV10-List: Re: Alternator will not put out current From: "Bob Turner" My first suggestion is to get a real schematic for this alternator, not just try to copy your neighbors plug. There are many different Ultima models. Do you have a good ground connection? -------- Bob Turner RV-10 QB Read this topic online here: http://forums.matronics.com/viewtopic.php?p=476728#476728 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv10-list Browse Digests http://www.matronics.com/digest/rv10-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.