Alternator RRC

**Camo** · 11th January 2010, 11:11 AM

Hi all

Question regarding the alternator on my RRC

Recently my rangie has been draining the batteries whilst turned off.. It takes about 2-3 days for both batteries to flatten. When I jump start it the alternator is putting out over 14 volts and charges great. If I drive everyday its fine.

I thought it was the cranking battery so I replaced with a new one. Didn't make a difference.

I disconnected the alternator yesterday morning and looks as if the drain has stopped.. so thinking one of the diodes is stuffed which keeps the charging circuit on when engine is off.. Has anyone had this problem?

Anyways my main question is my local auto electrical guy said you cannot rebuild the standard type alternators from RRC's

Is this true?

Cheers

Camo

**Lucus** · 11th January 2010, 11:25 AM

if your charging at 14 volts you have a regulator issues. Max charging volts should be 13.5 to 13.8. 14 will cook your batteries.

You can rebuild the magnet marelli alt's. i recently replaced the bearings, brushes and regulator (the brush pack and reg are a one piece item)

The rebuild cost me just shy of $110 ( i paid my self in beer for the labour)

RRC Magnet Marelli Alternator rebuild

Diodes can be replaced, if need be and complete diode packs are avaliable if you look hard enough.

baxters electrical where a good source of Magnetti Marelli alts parts

Baxters - The driving force in automotive

Cheers
Luke

**Camo** · 11th January 2010, 11:32 AM

Ah cheers for that

sorry I was a bit vague.. it is charging at around 13.8.. I just rounded it to 14.

My last alternator crapped itself 6 months ago.. it was charging at 19volts

Is there a way to check the diodes? best thing is to take it in for testing i guess

Camo

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