[johnbuckley]

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Originally Posted by Synchro909

It is most likely just too much end play in the shaft. Try one of these https://www.snydersantiqueauto.com/P...l-a/water-pump

Trouble with these collars is you have to take the pump off and to pieces to fit the collar. I am sure I saw somewhere a two-part collar that could be fitted over the shaft without removing the whole thing. ( or try a small hose clip, -yes it does work!)