Does my alternator have a built-in regulator?

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awitty

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Jan 16, 2023
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Location
yorkshire
Year of Your Van(s)
1972
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none
Hi

I recently purchased a 1972 crossover model that is in need of a lot of TLC. Whilst the engine is being rebuilt I thought I'd start with the electrics.
I understand the engines originally had a generator + regulator for maintaining the battery, but I appear to have an old alternator in mine (Bosch 0 986 031 120). Does anybody know if this alternator is internally regulated? I still have the regulator attached but wonder if it is still required and if I can now bypass it.

Thanks

Andy
 

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It needs to be between 13.8v to 14.2 v to overcome the internal resistance in the battery to charge.
 
Remove the screws holding the slip ring brushes and you should see a black plastic box inside. Check the slip rings for excessive wear and replace brushes if necessary
 

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