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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
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| Subject: | 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
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| Subject: | Re: Alternator will not put out current |
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
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