Charging problem

by Johann Johannsson in 912 / 914 Technical Questions 4 years ago

Hello Rotax experts.

i have a problem with my Rotax 912 uls engine not charging my battery enough. It is only charging around 12,9 volts.

What could be the reason for this?

Thank you in advance,

Johann G

Iceland.

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Re: Charging problem

by Ran Giladi » 4 years ago

Ran Giladi

4 16 57

Check the regulator. probably it is malfunction.

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Re: Charging problem

by Roger Lee » 4 years ago

Roger Lee

133 5.49k 5.76k

Do a voltage check on the two yellow AC input wires going into the VR. Then do a voltage check on the DC current exiting the VR. You'll have your answer in a few minutes. Make sure the battery terminal screws on the battery are tight.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

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Re: Charging problem

by Johann Johannsson » 4 years ago

Johann Johannsson

4 14 14

Thank you Roger. I will check that.

Best regards,

Johann G.

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Re: Charging problem

by Tyler Hathaway » 4 years ago

Tyler Hathaway

3 478 1.39k

https://pointsforpilots.blogspot.com/2012/12/testing-rotax-912914-generator-and.html

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Re: Charging problem

by David HEAL » 4 years ago

David HEAL

23 199 472

Here is some more info re: checking your 912's charging system:

https://www.rotax-owner.com/en/support-topmenu/technical-information/rotax-technical-articles/16-internal-generator-checks/file

https://www.rotax-owner.com/en/videos-topmenu/rotax-minute/404-charging

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