Alternator

Alternator, waterpump, A/C, sensors, CAS, etc.

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Alternator

Postby M100TURBOFR » Sun 13.10.2024, 14:03

Hi
Would like to know what the component attached to the aternator is (see photo). Is it just a car radio suppressor or some type of condensor? Depending on answer, would you recommend transferring it to a new alternator or not?
Thanks David
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Re: Alternator

Postby dapinky » Sun 13.10.2024, 14:25

David,

I don't know the 'official' answer, but I assumed it was a radio suppressor, so I transferred it to the new one....... it works, so it hasn't sabotaged it!
Dave

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Re: Alternator

Postby M100TURBOFR » Sun 13.10.2024, 16:38

Dave
Thanks for reply. I assumed it was - memories from the 70s!
P.S. No luck so far with finding the fine thread hub ball joint nuts.
David
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Re: Alternator

Postby dapinky » Mon 14.10.2024, 10:20

M100TURBOFR wrote:Dave
Thanks for reply. I assumed it was - memories from the 70s!
P.S. No luck so far with finding the fine thread hub ball joint nuts.
David


When do you need them by? If you are having problems, let me know and I'll sort out a small parcel for you.
Dave

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...oh, and a 2006 Freelander destined for the jungles of The Gambia - 4500 miles across roads, desert and tracks - what could possibly go wrong?
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Re: Alternator

Postby Tuga2112 » Mon 14.10.2024, 11:10

just based on my rudimentary understanding of electrics. i would expect something like that to either create a permanent drain in the battery (because its connected to the positive stud and shell) or be a completely bogus snake oil adition to the setup

as neither of my cars have one, and they both operate fine. (without issues picking up old fashion radio signals) my suggestion would be to get rid of it.
or at a bare minimum check for the parasitic drain with and without it.
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Re: Alternator

Postby RonR » Mon 14.10.2024, 15:48

It's a suppression capacitor so there's no drain at DC, it attenuates the voltage spikes from the alternator diodes as they switch on & off, which can play merry hell with other electronics.
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Re: Alternator

Postby Tuga2112 » Mon 14.10.2024, 15:50

RonR wrote:It's a suppression capacitor so there's no drain at DC, it attenuates the voltage spikes from the alternator diodes as they switch on & off, which can play merry hell with other electronics.

is this just "belt and braces" thing in the event the regulator fails ?
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Re: Alternator

Postby RonR » Mon 14.10.2024, 16:27

AFAIK the regulator is not directly in the path of the alternator output, so can't filter the diode spikes. It senses the average output voltage and varies the field winding to adjust it to the correct figure, around 14V.
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Re: Alternator

Postby M100TURBOFR » Mon 14.10.2024, 16:39

Many thanks to you all for answering my query. Have transferred said component to a new alternator.
Thanks David
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Re: Alternator

Postby alan e » Wed 16.10.2024, 20:42

I'm watching car SOS and they needed a alternator which they got from a co called WOSP alternators that they make to order and is in uk so i checked and they make a alternator for the M100 its a 65amp LMA075 no price on the site that i could find, if you are in need of a alternator it maybe worth checking them out. https://www.wosperformance.co.uk/alternators
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