The cups in the yokes of your universal joint are staked on place and the assembly is considered a throwaway part.
If there's no play in the cross and it swivels without binding it'll likely last many more years.
I doubt you'll find a shop that will take it apart and re-grease it, they'll just check it as I said above and if it doesn't pass the checks recommend you get a new one.
If there's no play in the cross and it swivels without binding it'll likely last many more years.
I doubt you'll find a shop that will take it apart and re-grease it, they'll just check it as I said above and if it doesn't pass the checks recommend you get a new one.