Dynamo: C39 or C40?

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Pascal
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Dynamo: C39 or C40?

Post by Pascal »

Hi,

I need to replace the brushes on my dynamo. How can I tell if it's a C39 or a C40?

Regards,
Pascal
1970 4-door saloon


PSL184
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Re: Dynamo: C39 or C40?

Post by PSL184 »

Put a pic on of the body and terminals and we'll tell you....
[sig]8426[/sig]

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Pascal
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Re: Dynamo: C39 or C40?

Post by Pascal »

See below

[frame]Image[/frame]
[frame]Image[/frame]
1970 4-door saloon


PSL184
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Re: Dynamo: C39 or C40?

Post by PSL184 »

C40
[sig]8426[/sig]

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Pascal
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Re: Dynamo: C39 or C40?

Post by Pascal »

Thanks - as you can see on the picture my brushes were pretty worn. No wonder it wasn't charging!
1970 4-door saloon


mike.perry
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Re: Dynamo: C39 or C40?

Post by mike.perry »

The C39 dynamo has nut and bolt terminals, a grease plunger on the end plate and on the earlier dynamos there is an inspection cover which makes inspecting the brushes a doddle. The brushes are a different size and the output is less than the C40.
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Pascal
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Re: Dynamo: C39 or C40?

Post by Pascal »

Hi,

With new brushes all was rosy for a while until one of the brush springs went astray. Back to taking the dynamo apart.

I looked on the ESM and Bull Motif web sites but couldn't find any of these springs. Does anybody happen to know the reference, and where I can get them from?

Regards
Pascal
1970 4-door saloon


Pascal
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Re: Dynamo: C39 or C40?

Post by Pascal »

Looks like the reference is RTC466. I could find them on Mini and Land Rover web sites, but not on Morris Minor web sites, strangely enough.

Regards,
Pascal
1970 4-door saloon


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