Hi Roger,
Got the new drive units and I have installed one on the louder pump I had. However, now it is literally 10 times louder. Before it was a hum that could be heard while next to the tank, now it is super loud and I can hear it anywhere in the house. Do they have a break in period? I tried both new drive units and they both sound the same.
I have left one in there for about a day and half and there has been no improvement. If the pumps were this loud when I bought them, I definitely would have returned them. At this point, I think I will have to take out the old drive unit and take the wide flow kit off. The noise is pretty much unbearable, I am actually worried about the toll this takes on the fish, as it can't be pleasant to hear this amplified through the water 24/7.
Any suggestions would be appreciated. I have already taken the pump apart 2 or three times to make sure that the shaft is seated properly. Also, swapped out the new drive units and there is no difference, so I am worried that it is something with the motor, which would be the only thing I haven't changed out at this point.
I realize the pumps are several years old and have gotten good use out of them, just thought I could change it up with the wide flow and 18v jumper.
Sorry for the long post.
Thanks,
Jason