What does the belt that drives the aircon compressor also drive?

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Lars Knudsen - 05 Aug 2006 11:54 GMT

Hi,

Anyone who knows what the belt that drives the aircon compressor also
drives in the car? Generator? Other important stuff?

What happens if it breaks

a) other (expensive) stuff might break as well
b) the engine stops
c) battery will not be charged
d) the aircon will stop workng

I assume at least option d is true :o)

Please advice if anyone know. The car is a 2002 E39 530dA touring.

** Lars

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Dave Plowman (News) - 05 Aug 2006 12:15 GMT

> Anyone who knows what the belt that drives the aircon compressor also
> drives in the car? Generator? Other important stuff?

Why not look? It's hardly difficult.

It also varies by make of car and possibly model too.

However *as a rule* AC usually has its own belt as it is often an option
on cars so saves a total re-design.

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Lars Knudsen - 05 Aug 2006 15:03 GMT

>> Anyone who knows what the belt that drives the aircon compressor also
>> drives in the car? Generator? Other important stuff?
>Why not look? It's hardly difficult.

Well... It is partly hídden under the engine - so it's not THAT easy
to see. However it does actually look like the belt is used only by
the a/c but I was not sure.

>It also varies by make of car and possibly model too.

Sure thing... That's why I posted in the bmw newsgroup and mentioned
that it is a 2002 E39 530dA touring. It does vary for sure, I also
have a Peugeot 406 coupe 3.0 and on that it is the same belt that
drives a/c and the generator... Clever French design ;-)

>However *as a rule* AC usually has its own belt as it is often an option
>on cars so saves a total re-design.

I don't think that they sold a lot of them without a/c - I think the
manual aircon was standard. Anyway, what you say does make sense.

** Lars

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Miller - 05 Aug 2006 12:32 GMT

as a rule there is one belt that drives all the peripherals on modern
motors. where a/c is not specified as an option, the compressor is not
fitted and a shorter belt is therefore used. you may be able to get around
the problem by fitting a belt of the length specified for a car without a/c.
i know this works on many mercedes. have a look at the belt journey around
the various pulleys, you should be able to work it out.

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admin - 07 Aug 2006 15:05 GMT

> as a rule there is one belt that drives all the peripherals on modern
> motors. where a/c is not specified as an option, the compressor is not
> fitted and a shorter belt is therefore used. you may be able to get around
> the problem by fitting a belt of the length specified for a car without a/c.
> i know this works on many mercedes. have a look at the belt journey around
> the various pulleys, you should be able to work it out.

Apparently BMW doesn't follow your rule. I've never seen a BMW that had
one belt and AC.

This ain't a mercedes newsgroup BTW..

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JackWang9@gmail.com - 05 Aug 2006 13:45 GMT

> Hi,
>
[quoted text clipped - 9 lines]
>
> I assume at least option d is true :o)

My AC belt broken weeks ago. For my 99 528i obviously it only drives
the AC. I drove the car OK w/o AC for a few days.

> Please advice if anyone know. The car is a 2002 E39 530dA touring.
>
> ** Lars

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Lars Knudsen - 05 Aug 2006 14:56 GMT

> My AC belt broken weeks ago. For my 99 528i obviously it only drives
>the AC. I drove the car OK w/o AC for a few days.

Okay - it looks that we too when looking at it, but it is rather tight
down there as partly hidden under the engine.

I'll keep my fingers crossed that it last until I get it past the
garage.

** Lars

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