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Alternator light.

Posted: 19 Jul 2020, 09:48
by ricicles
First trip away this year . Alternator light came on but goes out at higher revs.
I have measured the voltage from the alternator . Its showing 11v at tickover.
Should it be more or is this normal at tickover.
Should I be looking for a fault elsewhere?

Re: Alternator light.

Posted: 19 Jul 2020, 10:02
by Jim San
Low charge. 
belt slack, poor earth, poor connection at terminals are first things to check.

Worn brushes, simple and easy fix, change brush pack.

Re: Alternator light.

Posted: 19 Jul 2020, 10:11
by Mocki
It should be 14.5v ideally as soon as the engine is running . Tickover shout be any different , it’s alternator not a dynamo! 

It’s the brush pack .

when you measure the out put voltage measure the the back of the alternator, using the casing as neg .
then measure again using the van body as neg , any difference and you need to clean the alternator amounting points and earthnstraps . 

Re: Alternator light.

Posted: 19 Jul 2020, 20:42
by tobydog