Hi Fred
In short.... NO... there should not be oil in the alternator. You will have a failing seal on the output shaft from engine to the alternator. These seals can sometimes be changed without splitting the crankcases, but sometimes not. You will need a puller to get the rotor off and access to the shaft/seal to see what is going on.
This may be a job for a repair shop if you have not done this sort of work before. There are some tools required, and the engine will need to be removed from the frame if a new seal cannot be fitted without splitting the crank case.
regards
robotek
Testimonial: "thanks for info,very helpfull"
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