Hi everyone. Glad to find this forum discussion. I got the P9550 for over three years. First time got the ER-10. Leslie wanted $950 to replace the motor block. That is a hiway robberies. I was able to find a m-block for $400 and replace it myself. After a 1-1/2 year the same thing happen. This time I am starting to make an deep dive into it. Polaris is building an underwater robot but using all cheap parts, connectors are not even IP65 rating. Only rated for splash proofs. The motor block is made of cheap hard plastic not hard composite material so after a while the chassis bend and cause leakage. The thruster motor is only protected with one oring on the outside under the brass nut, no support nor seal from inside. So stupid design. And some stupid people on YouTube shows loosing the nuts during disassemble, which can cause leakage if not careful. Polaris does not want theirs tech to deal with the electronics replacement. They created the tester to test the unit so the techs only know what parts to replace according to the results from the diagnostic tester.
I opened the motor block to see what is going on and found one motor has some corrosion built up on it. Using the DVM to test the motors. The good one shows 60ohm and the corrosion one shows 30ohm. This can cause over current on the cpb. Looking for the replacement motor now. If anyone knows or has them please let me know. Thanks.
Mow,
How did you remove the big gear the one that has the bearing (the one that is connected to the output shaft). I think the bearing is bad I donāt want to damage the assembly trying to remove it. Also do you have the Amazon p/n for the bearing, if not I will search for it.
Thanks
We 3d printed one, not sure how long it will last, there are online companies that will 3d print one for you and they use materials that probably will be ok for this function. The company I saw is igus and they charge about $10 for the gear plus shipping if you give them the 3d file.
any luck finding this gear? i need the same part to repair my cleaner. thanks for any insight.
I couldnāt find it anywhere, all places I found that specialize in gears, the exact match could not be found. Even from the manufacturers of the Robot itself, it was the full motor or nothing. What I ended up doing is buying a replacement of the part of the motor itself that the gear is in and luckily it worked like a charm. There is always a chance the same part might be broken on the used part, but worth a shot and worked for me - good luck: Zodiac V3 4wd V4 VX40, VX50 VX55 Gearbox Motor Drive Polaris 9300 9450 9550 Pool | eBay
HI
I have Polaris 8050 sport robotic cleaner and recently noticed it stop moving, I ha checked the obvious and did not see any issue, however, when i try to move wheels, even though it moves in both direction i found it has some resistance and its making screechy grinding noise. When i put it back in the water it works for some time 10-30 minutes and then it stops. I pull it out of the water , spin/move wheels manually a bit , put it back in the water and it is working again for some time and stops again.
I suspect it has something to do with drive motor or the shaft.
Has anyone experience similar issue? and if i were to replace drive motor, is it something someone already have done it, and any idea where i can get a replacement part (other then Polaris, which they want be to buy entire motor block).
Any suggestions/recommendations would be greatly appreciated.
Thanks
I know that some of these posts are quite old, but for those just joining (in late 2023)ā¦
Regarding the 41JFS3146 motors referenced throughout this thread, I reached out to the Canadian company, Fluidra, recommended by Ebram in this comment, above, via email on 26 November, 2023. Fludraās very quick reply on 27 November, 2023, was as follows:
āIf the Motor is bad, there is not part for it or for any of the individual component, the whole Motor Block has to be replaced, please. Technical Support Kind Regardsā
Follow-up from my post, two messages up: I successfully ordered replacement motors from Depanne Robot (who ironically, posted immediately above). The motors currently sell new for $36 each.
website: www.depannerobot.fr
[email protected]
2 chemin du Tourail
63500 Le Broc
France
I confirmed that the motors work, but Iām currently in search of a replacement motor block control board, so if anyone knows of a reliable source, please share it.
I actually found your shop but am unable to order from it, it always states the shopping card is empty. Iāve tried different browsers as well. I need the same motor and would like to order! 
Iāve finally just managed to order. I had to do it from my phone though. It just wouldnāt work from my laptop, even with different browsers.
Iām in Portugal and just ordered the motor from the link https://depannerobot.fr/produit/moteur-41jfs3146-occasion/
My robot is Zodiac RV4390 TILE
Hello @antunesr ,
Welcome to RobotShop community.
We are sorry to hear that you are having trouble with your robot.
According to the provided link, it seems that you have ordered the motor from a different website.
We hope the issue will be resolved.
Let us know if thereās anything else we can assist you with.
Sincerely,
Are there any sources in US?
I just recently had to replace the circuit board on my 9650iq. There were apparent shorts on the board due to a leak.
Not sure if the motors are damanages as well, but even after replacing the circuit board im getting error 10.
I refuse to order a entirely new motor assembly with a not even 3 year old robot.
Got a P9610IQ - Got the Error Code 3 - Left Traction Motor. Opened up housing and left traction motor 41JFS3146 was rustier than the right and some condensation inside (not much, some droplets.) If I clean, dry out and re-gasket with dielectric grease, would it work?
Anyone figure out a way to get 41JFS3146 motor in US recently?
Hello. Could you share a drawing of the transition plate? I am grateful in advance!
Hello @ab2 ,
Welcome to RobotShop community.
Unfortunately, we donāt have such information so we recommend contacting the manufacturer directly and ask them to provide you with it:
[Tel:800-822-7933]
(mailto:[email protected])
Feel free to contact us again if you need further assistance.
Sincerely,
Alex,
Where did you find the circuit board? Looking for a new one for my Polaris 9550
You donāt need the exact 41JFS3146 motor as long as the replacement matches the key specs ā 24V DC, similar RPM/torque, gear ratio, and shaft size. Check electronics suppliers or marketplaces like eBay/AliExpress, and make sure itās sealed for pool use.
Took mine apart and found water inside as well, along with a little corrosion in various places. I disconnected the motors from the Circuit Card inside to take my resistance measurements with my DMM. I was getting approximately the same measurements from the motors (around 21 ohms).
So I thought okay, maybe there is debris binding up the internal gears. Went to rotate the left and right traction motors again to feel the difference and they had the same resistance to rotation this time.
So I connect the left traction motor to the CCA again, and itās difficult to turn again. Even feels like there is slippage, which other forums would lead you to believe that the internal gears were misaligned or had debris causing the issue.
I did notice a spot on the back of the control board (side the component leads are soldered to) that looked like it could have some corrosion just above where the main motor is connected to the control board. Did a continuity check to
see if there was a short at that point, but that was not the issue. Think it might have been mineral build up as it just brushed off with ease.
Then I flip the control board over to the front where all the components are exposed. Yep, there definitely has to be an issue as multiple spots look like they have corrosion. Would have been nice if they would have used some kind of B pilot point
conformal coating to protect the CCA with this being used under water!
Next I went to try and clean up the control board in hopes to be able to test the suspected the component(s) that had contaminants on the leads. While cleaning board, the C18 capacitor came loose from the board and eventually came all the way off. It had seemed to be a contributing factor being located opposite from where the debris on the back side of the board was at.
Further probing found the second JMTK58N06B N-Channel MOSFET from the TR2 (left traction motor connector) connector to have a short. Another short was found on a surface mount resistor marked R100 located closest to the edge of the board where the input power is connected at the S4 and S5 markings.
Without access to the schematic and layout of this board, I would attempt to replace these 3 components if possible and the goal was to spend the least amount of money possible.
If anyone knows where to get the circuit card, I would appreciate the link so that I can check availability and price.
Very helpfull thread for similar issues on my Polaris 9450
initially Error 10 after running 10-20 minutes but now pretty much instantly.
Both gear wheel-motors at 35-38ohms and they spin OK when powered externally
Impeller motor spins OK BUT I do not know the standard impedance I should readā¦ spins when powered externally
I did have to fix the cable-swivel since one wire no longer connected ( they use an Audio-jack 1/8) but error 10 still present.
I thought maybe the motor board got damaged when the wire got disconnected BUT using my oscilloscope, I see that the Brown-wire is LIN and the pattern changes when the motor board gets poweredā¦
Pretty much all board pictures found seemed slightly different then mine ā¦
am suspecting the U3 with the little corrosion spot next to the J1 connector. If its an IMU that no longer communicates with the main CPU, error 10 makes a lot of sense.
I would hate to replace the motor PCB and not fix the issue.
Anyone has reversed engineered the LIN protocol ?
All pool robot companies owned by Zodiak all use the same components to keep the cost downā¦
the changes from one model to the next one,
to the next model year makes sure as many components can be reused in every productsā¦