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csb123
01/29/2017, 06:50 PM
I have and older model 6105 with the prop shaft in power block. It's buzzing because the shaft it tilting off center. I've tried to push it back to center, but after a bit of use it wanders back. The shaft is not removable.

Any suggestions?

rvitko
01/30/2017, 09:16 AM
If it still fits fairly tight in the seat and the shaft has no rust, I would try tapping it in with modest taps (careful not to bend it) with a hammer and a punch, when fully seated it is about 1-2mm below the top of the well the impeller sits in. If it is rusted or comes loose, I would send it in.

csb123
01/30/2017, 04:39 PM
I'll give it a try. Thanks!

five.five-six
03/13/2018, 02:57 AM
I’m having a similar noise. I tried tapping the shaft in but it really didn’t do anything. I’ve shut the pump off because vibration can’t be helping anything but it’s also cut the flow in my tank by 50% which isn’t helping the corals either.

rvitko
03/13/2018, 08:53 AM
If you send it in, I am happy to check it out. In some cases I have seen the shaft is bent and we can replace the shaft. If the shaft was loose, the propeller can wobble and that will make noise and then even after the shaft is reinserted the damage to the blades (worn ends) will make it imbalanced and cause noise. If the shaft seat is worn out and the shaft will not stay firmly in the motor, the only repair is a new motor.

five.five-six
03/13/2018, 05:37 PM
The shaft seems centered and firm. Just not 2MM below the well closer to flush and I didn’t want to drive it any harder.

Where do I shipp it?

rvitko
03/15/2018, 08:19 AM
Tunze USA
305 Victor St
Austin, TX 78753

five.five-six
03/19/2018, 09:45 PM
On its way

rvitko
03/20/2018, 08:28 AM
Thank you!

rvitko
03/23/2018, 09:58 AM
I got it, I replaced the shaft and the drive unit, the only charge is the drive unit. One side of the prop was worn done and the shaft and hole in the middle were ground down, it is substantially better, but not perfect, I am assuming a couple weeks of running will improve it more. I was trying to PM but RC is on the fritz and I have to log in over and over and getting into PM's is impossible.

five.five-six
03/23/2018, 11:22 AM
Thank you very much Rodger can you give me a private message on how to pay you?

five.five-six
03/23/2018, 11:26 AM
My 11" vlamingi Tang thinks that he is a diamondback goby. He likes digging sand out of his hiding space. I just wish you would take a cue from the Diamondbacks and drop the sand towards the bottom of the tank instead of taking it towards the top. Could this problem have been caused by my tangs burrowing endeavors?

rvitko
03/23/2018, 11:48 AM
I am just timing out over and over trying to send a PM, can you email me? Tunze at sbcglobal dot net

Sand would definitely cause it, that is what it looked like.

figuerres
04/20/2018, 11:08 AM
Hey Roger I will be sending in at least 1 possiby 2 next week.

i am re-doing my tank and have some buzzing that i have not been able to solve.
i have 4 6105's that were bought in 2015 or 2016 and two have fixed shaft and two come out. not sure yet if the buzzers are the fixed or not.

just got done soaking with vinegar and cleaning , now to test them all for issues.

rvitko
04/20/2018, 11:23 AM
Everything made after 2012, the shaft should not come out, so that is likely the cause. Removable shaft models will have a blue bushing on each end of the shaft and it will reach all the way to the front cover. If the shaft seat is still good, you may be able to reseat the shaft, that is what we try first here.

figuerres
04/23/2018, 06:14 AM
Everything made after 2012, the shaft should not come out, so that is likely the cause. Removable shaft models will have a blue bushing on each end of the shaft and it will reach all the way to the front cover. If the shaft seat is still good, you may be able to reseat the shaft, that is what we try first here.

so i wound up sending in two of the four.

they should show up Thursday per UPS estimate.

seems like the two i sent are the one the shaft is staying in, the two i did not end i think are the lose shaft ones, yes no blue bushing on the prop ends on any of them.

one buzzes, the other buzzes and makes bubbles -- cavitating ??

One i thought was going to be ok when i tapped the shaft but after a time the buzz came back.

rvitko
04/23/2018, 09:37 AM
Thanks Denny, I will let you know what I find.

rvitko
04/27/2018, 09:58 AM
Denny,

I think I have this solved, it looks like it was one pump as the older one without controller, the shaft is sanded down and the newer one the drive unit has a large ovate hole. My hunch is sand got in this pump and sanded the shaft and drive unit and then in cleaning the parts got swapped. I am still working on trying to replace the shaft, you will need a new drive unit.

figuerres
04/27/2018, 10:25 AM
Denny,

I think I have this solved, it looks like it was one pump as the older one without controller, the shaft is sanded down and the newer one the drive unit has a large ovate hole. My hunch is sand got in this pump and sanded the shaft and drive unit and then in cleaning the parts got swapped. I am still working on trying to replace the shaft, you will need a new drive unit.

ok that makes sense as i had 4 pumps all getting cleaned at the same time.

also the type of controller, bought them all in one order but one one has the new end the other 3 have the old end.

they ran for a while before the buzz started , no idea how it got the sand but there was plenty of sand in the tank.

figuerres
05/07/2018, 10:39 AM
ok that makes sense as i had 4 pumps all getting cleaned at the same time.

also the type of controller, bought them all in one order but one one has the new end the other 3 have the old end.

they ran for a while before the buzz started , no idea how it got the sand but there was plenty of sand in the tank.

just a follow up, got the parts back and things are working very nice now.

when i looked at the shaft and driver i was surprised i did not see most of that , must pay better attention in the future to the shaft and driver wear!
that shaft was all kinds of ground into a strange shape!

thanks for the help!

if there is a fish / coral show in the tampa / orlando area we need to catch up and have a beer or two !!