Jeff,
Let me pile on... Jim Brown and I have just gone through this.
Frans is right on. The GG connections are AC.
First confirm the voltage regulator is charging the battery. At 3000
RPM your ammeter should be near zero for a fully charged battery, and
voltage should be 13.5-13.8 volts. If it is not, it is the stator or
regulator.
Regulator: Check the light circuit. Light on with engine off? It is
supposed to be OK...Wrong, trust no light only.
Check B+ again, with the alternator C and B connected it should be
battery voltage, C is often put on an alternator switch, so check that
the switch provides battery voltage.
Check AC voltage from stator yellow leads. (see heavy mx manual 13.4.7).
The regulator is a solid state device and does fail. $190 from Rotax.
I used to keep a spare, but too expensive now.
Stator:
Check the resistance values of the stator yellow leads per the heavy
maintenance manual. You need a good Volt/Ohm meter for this.
If there is a short, then replacement of the stator is necessary. I
have repaired them before, and a year later, I had to go in again and
replace it. Yours is a fairly new engine, so you should not have a
defective stator like I had. $1200 from Rotax.
Enjoy your troubleshooting,
Bud Yerly
Custom Flight Creations.
----- Original Message -----
From: JEFF ROBERTS<mailto:Jeff@rmmm.net>
To: europa-list@matronics.com<mailto:europa-list@matronics.com>
Sent: Wednesday, April 07, 2010 11:21 PM
Subject: Europa-List: Re: Electronic Mind Needed
<Jeff@rmmm.net<mailto:Jeff@rmmm.net>>
Hi All,
My electronic problem is continuing to elude me. Thats not saying much
since I have never wired anything except a room or two on some houses
over the years. With that said I have been having trouble keeping my
battery charged over the past 4 or 5 months. Gold Rush has 220
delightful hours on her, but lately she's just not charging the
battery, or maybe I have a drain somewhere that wasn't there before. I
have replaced the regulator, and the big blue capacitor. After
charging the battery today I went out and bought a new voltage meeter.
I checked the battery 1st to be at 12.5 volts, I checked the 30 amp
fuzes and they are good. Last week I did find a loose ground and fixed
it but to no avail. Today I check the output of both alternator wires
as they we're connected at the GG connections to the regulator and
they we're reading - 6.5. when connected. When disconnected from the
regulator they didn't have a reading at all. Is that normal?
I also checked the +B output to see if it was sending a charge and it
read only .53 volts.
If any of you have advise to this non understanding electronics guy
that would like to be flying charged to safely get to sun-n-fun let me
know.
Thanks In Advance!!
Jeff R. N128LJ Gold Rush
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