How I check My rectificar

by agustin Pucheu in General Tech Discussion 12 years ago

Hello, How Ihave to do to check my good funcionality of my rectificator, with a tester.

thanks

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Re: How I check My rectificar

by bill martin » 12 years ago

bill martin

10 757 0

Agustin,

With the engine running, you should read approximately 13.5vdc at the battery terminals. Anything higher than 14.5vdc could indicate a bad regulator. If your battery isn't charging, check the AC voltage going into the regulator. Problem could be in the alternator. You can find wiring diagrams for the regulator in the installation or heavy maintenance manuals under the support tab at the top of this page.

Bill.

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Re: How I check My rectificar

by milo avram » 11 years ago

milo avram

2 20 0

Dears,

measuring output from the regulator to a 70% charged 17 Ah battery, with a 582 at about 3300 r/min,

charging started with 16 V steadily increasing to 18 V,

is this way out of range ?

remaining very thankful for information,

cheers

Agustin,

With the engine running, you should read approximately 13.5vdc at the battery terminals. Anything higher than 14.5vdc could indicate a bad regulator. If your battery isn't charging, check the AC voltage going into the regulator. Problem could be in the alternator. You can find wiring diagrams for the regulator in the installation or heavy maintenance manuals under the support tab at the top of this page.

Bill.

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Re: How I check My rectificar

by Roger Lee » 11 years ago

Roger Lee

126 5.13k 4.55k

Hi Milo,

Did you take a reading right at the battery too?
Yes, 16V-18V is too high and will damage your battery. Most charging systems for 12V service charge around 13.5V-14.2V. There can be some slight variation and make sure your voltmeter is giving you the correct reading.

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

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Re: How I check My rectificar

by milo avram » 11 years ago

milo avram

2 20 0

dear Roger,

appreciate very much your message,

the readings are at the battery terminals,

the regulators black cable and the mass are connected to the battery,
and 2 of the regulators three yellow cables,
(the two close to the black), are receiving the AC voltage from the eight coil generator,

¿ what would be the clue about a friend told me that those are double regulators, supposedly the reason why there is a third yellow cable ?,

¿ can they be connected in different ways, using the ' loose ' yellow cable ?,

I'll be checking the voltmeter,

thanks a lot,

cheers,

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Re: How I check My rectificar

by bill martin » 11 years ago

bill martin

10 757 0

Milo,

If you are getting 16-18v reading at the battery or the regulator, the engine alternator is not the problem. Alternator current is DC voltage and varies greatly depending on engine RPMs. The function of the regulator/rectifier is to convert the AC voltage to DC voltage and regulate the DC voltage to 13.5 to 14.5 DCV regardless of the input voltage.

Sounds to me like a new regulator is needed. Once they go bad, they are made in such a way that they cannot be repaired.

Bill.

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How I check My rectificar

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