I received the Drive unit (6025.700) and Disc for drive (6025.740) for both of my 6045 from Tunze last week, and I replaced the Drive unit (6025.700) and Disc for drive (6025.740) for both of my 6045 today. And both of them give me the similar problems. Both of them were running normally at the beginning for about a minute, then one of them started to make a very loud noise, a few seconds later, the other one also did the same. It appears that both of the drive units were losing their balance and were waving (seemed like they were about to fly out from the unit). So I stopped them to see what happened, after openning them up, the metal stick/pin was not attached to the motor, but it attached to the Drive unit instead. Is this normal? I put both of them back to try it again, then both of them acted the same way. What did I do wrong? I put the Disc for drive onto the metal stick/pin first then the Drive unit over it (the Disc for drive was under the Drive unit), am I doing this correctly? The only difference I saw is that the new Disc for Drive part (6025.740) is substaintially thicker than my old one, is this causing the problem? please help. thank you!
