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Old 10/18/2019, 02:38 PM   #7
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Join Date: Apr 2000
Location: Austin Texas USA
Posts: 35,559
On the 6105's I am leaning towards this being a drive unit issue, if these are made after Nov 2011, the metal shaft should be rigidly fixed in the motor, it is not meant to come out. The drive unit should spin on the shaft, anything made before Nov 2011 the shaft is removable, it spans to the front cover and the drive unit should spin freely on the shaft. If the shafts wobble from being loose, that will cause intermittent operation, if you can reseat them firmly they will work, if not, you need motor block 6105.100 to repair these.

Roger Vitko
Tunze USA

"He's for every one of us, stands for every one of us, he'll save every man, woman and child in a mighty Flash!"

Current Tank Info: 210 gallon planted tank with Altum Angelfish
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