Old rocking piston can be rebuilt providing the motor still works. Sometimes for the rebuild the pump will need new piston cylinders. There are examples on YouTube of how to rebuild them. Sprkplug also explained how to do it in a past post. I will see if I can find it.
Tony's PBoss Forum good instructions:
http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=390615

Ytube:
https://www.youtube.com/watch?v=JvVv2iRDVz8

Last edited by Bill Cody; 02/23/18 08:14 PM.

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