Failed Hub Motor Clutch - Promovec (Shengli) Motor Teardown

[@JCisJD]

Your videos are so helpful

[@EbikeRepairs]

Glad you think so!

[@strhunter666]

very helpful, i had a customer bring in a newer bike and the axle key was never installed

[@EbikeRepairs]

Glad it helped

[@gren509]

The "sprag" clutch is dry. Lift the seal off and put oil into it, it will work fine.

[@joehozzy2616]

Yes had same issue. I drilled a tiny hole in clutch and injected oil into it.

[@EbikeRepairs]

Good to know, I'll have to give that a go next time I get an unfixable one! Thanks for the info

[@Boediprasetya]

@@joehozzy2616 If you make a hole in the clutch with a drilling machine, there will definitely be particles that fall into it, how do you get the particles out?

[@joehozzy2616]

@Boediprasetya do it carefully and there will be no issues

[@Boediprasetya]

@@joehozzy2616 Thanks Bro

[@jorainer612]

I've got this exact same clutch. Please where did you get a new one? Mines from a volt bike. Like yours looks fine. But sometimes no drive and clunking from the motor so wanted to replace it.

[@EbikeRepairs]

Unfortunately, I didn't manage to get a spare, the manufacturer never responded. I replaced the whole motor for the customer.

[@Boediprasetya]

36T 38mm Planetary Gear with Clutch.... Do you use this clutch?🚲🚲🚲🚲

[@EbikeRepairs]

Unfortunately I couldn't find a clutch for this motor, sorry

[@DikTrom]

woodruff key is round, this seems to be a square one not?

[@EbikeRepairs]

AFAIK this is standard but maybe I'm calling it the wrong name - it's a keyway slot filler jobbie

[@bogsquatch6782]

Is it possible to loosen up a sticky clutch to help coast for longer

[@EbikeRepairs]

Either bearing replacement or a new clutch assembly would be needed. What motor do you have?

[@bogsquatch6782]

@@EbikeRepairs thanks man I have the engwe pro motor. I found out that model has a welded clutch to enable regen from the motor. I uploaded a post of the two clutches for anyone to compare. Such a relief the new clutch coasts for days

[@EbikeRepairs]

i didnt know that, thanks!

[@radowane101]

I have the same situation in a gazelle ebike, what should i do ? Is it possible to replace only the bearing or i need all the planetary assembly ?

[@EbikeRepairs]

I think you need the clutch mechanism, usually comes with the planetary gears included.
I don't know how to replace only the clutch mechanism one way bearing, I think they're sealed units.

[@radowane101]

@@EbikeRepairs thanks

[@akhilkumarkar9112]

I have facing same problem sir, 😞

[@EbikeRepairs]

One of the comments mentioned injecting some oil 👍

[@bernardpayne2882]

Hi, did you find a source for the clutch? I also have a smaller axle - 13.5mm

[@EbikeRepairs]

unfortunately not. sorry!

[@nickbryant3695]

@@EbikeRepairs Did you end up having to replace the whole motor in the end? I have a Promovec motor with the same issue, and exactly the same Planetary Gear part that has failed. Bafang gears are easy to source, but not Promovec it seems.

[@nickbryant3695]

Answering my own question here, but I managed to get a replacement clutch from Batribike, who are the UK distributors of Promovec motors. Took about 6 weeks to arrive as they need to import the part but is now installed and all working again. Many thanks for the original video as it was a great help in working out how to take the motor apart.

[@patrickjfekkin6715]

Hi can you please let me know if you fix and customer bikes please post how I can contact you!

[@EbikeRepairs]

Hiya yes [e-mail]

[@mazharalimazharali2892]

AoA sir motr k jo andr graria 3 hoti h wo ni mil rhi h

[@EbikeRepairs]

Sorry buddy I'm only fluent in English, could you translate, please