CH 119 and CH 121 are the macerator and discharge impeller. As viper says they, are both solid steel. And not rubber wear parts. However, if I do remember correctly, they ride on an elongated shaft from the head motor, and if they have become even a bit loose, they will wear the shaft and not spin under duress.
I personally, have never had anything but problems with crown heads.
Jabsco are cheaper, and work much better with very affordable replacement parts.
Just my opinion.
Raritan head running but filling up with water
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tomschauer
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Viper
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Re: Raritan head running but filling up with water
Good point Tom. There's also a key CH34 on the shaft and a set screw F149VT on the discharge impeller that should be checked.
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