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mfinn
09/17/2016, 04:32 PM
I just picked up a second hand 6125 powerhead and it seems a little weak for 3150 gph. So I figured maybe it's due for a new impeller and I'm not finding any in the usual vendors I buy from.
Anyone have a link?
mfinn
09/18/2016, 08:53 AM
50 views and no help?
mfinn
09/18/2016, 10:20 AM
Found what I think is the right part in the Tunze catalog.
Is the 6125.700 the right drice unit for the 6125a model, Rodger?
rvitko
09/19/2016, 08:56 AM
If it is the 6125 with removable shaft that spans from the front cover to the back of the motor, you need 6125.700, this was the version made from 2008-2012. The current version the shaft only spans to just below the top of the hole the drive unit is in, and it is not removable, for this version you need 6125.701.
mfinn
09/26/2016, 10:00 AM
If it is the 6125 with removable shaft that spans from the front cover to the back of the motor, you need 6125.700, this was the version made from 2008-2012. The current version the shaft only spans to just below the top of the hole the drive unit is in, and it is not removable, for this version you need 6125.701.


Since the shaft was able to be removed, I ordered the 6125.700 part.
I installed it and the pump worked for a little while and stopped. Not sure exactly. I turned the pump on in my salt mixing barrel and walked away.
Maybe 10 hours later I checked on it and the pump was not working.

Pulled the pump out and re-assembled it and turned it on, out of the water. Propeller started spinning so I dropped it in the water and it worked for a few seconds and stopped.
I repeated the same steps again. Same results.
Then I re-installed the old impeller and fired it up a half hour ago and it is still working.

Thoughts?
rvitko
09/26/2016, 10:57 AM
Possibly a wrong spare part, is the magnetic rotor longer on the not working one? The long rotors only work on the newer pumps with fixed shaft.
mfinn
09/26/2016, 11:59 AM
Possibly a wrong spare part, is the magnetic rotor longer on the not working one? The long rotors only work on the newer pumps with fixed shaft.



Yes it is longer ( the new one)
rvitko
09/26/2016, 12:23 PM
PM me your info and I will send the shorter rotor.
mfinn
09/26/2016, 01:11 PM
PM me your info and I will send the shorter rotor.



Thank-you.