Tunze 1073.05 running loud

Frogmanx82

New member
I had an issue where the water level got low and the pump was pulling in air. It still wasn't running right when I fixed the water level so I took it apart and did a thorough cleaning with vinegar. The pump housing and impeller looked pretty clean but when I put it back together it made a tremendous noise. It seemed to be pumping full strength, in fact maybe even more than normal.

Anyone have experience with this pump. It ran dead quiet for a year and a half but I can't figure out what is making it so noisy now. I've taken it apart again and no luck getting it any quieter.

To be clear, this is the DC version of the 1073.
 
Did you ensure that all the bushings that stabilize the shaft were in place when you put it back together?
 
Yes, that was the problem. Roger on the Tunze forum said the same thing. I wasn't pushing the orange bushings into place first. If it falls out when the pump is turned upside down, it's not in right.
 
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