Book : BBS02 Bafang Disassembly for repair and Tools Guide 03

⚡4 MASTER BOOKS AMAZON ⚡
www.amazon.com/gp/product/B0C...
0:00 E-Bike Master Books
4:08 BBS Motor Hall Sensor Tester.
5:51 Complete disassembly of the BBS BAFANG Motor
9:53 Let's start the disassembly of the bottom bracket axle and pinion gear
12:24 Pedal Assist Sensor and Checkpoints for motor disassembly
Parts List
s.click.aliexpress.com/e/_DEm...
s.click.aliexpress.com/e/_A0K7m7
🚲Bafang / TSDZ Central Motor Tuning Repair Parts
cafe.naver.com/tgenter/717

[@prikkurde]

clear video thanks

[@velosapien]

I ride mine in the rain...no issues so far. I also have a hammer and a table to work on.

[@Mobilant_US]

The bbs02 series has a right-hand crank axle, making rain somewhat easier. It's not a big problem when driving, but it would be good to be careful when parking.

[@user-dz6tk2cg4m]

I ride mine in the rain. Had it up to 48.6 mph as well.

[@Tonyplat98]

48mph BBS02 motor? That's very unique trick you'll need to show me how to do that some day...

[@kosztaz87]

Great video, but I must say my axle locking looks nothing like the one in the video. I simply cannot find a video anywhere on KZbin, that would show the type of locking nut I have on my BBS02 (it's on the left side/ non-drive side). Also I had some sort of permanent rubber coat or seal there, that I completely destroyed/ hacked into a thousand pieces, as there was no way to remove it. I don't know if my unit is a revised kit (I bought it about 3 years ago), what I know, it's way less repairable thanks to this change, extremely frustrating. I actually ended up using some IB weld epoxy (only a tiny amount) and glued a socket head to that washer on the axle. There is simply no other way I could see to try to turn it, or pull it out. I am still waiting for the JB weld to cure, then I will try to twist it or pull it out. I have no idea whether I will succeed or not. But I really hope I don't have to bin the whole unit because of this design flaw. I have a broken clutch inside, and unlike on the BBSHD where t's easy to access it, here on the BBS02 it's buried under everything else. I miss my BBSHD more and more.

[@Mobilant_US]

Thank you. After researching. Perhaps the latest version has a gasket that appears to be plastic. If you look at the seller's product here, you can see three rings. s.click.aliexpress.com/e/_Dmc8BpH

[@Mobilant_US]

My guess is that the BBS02 is very prone to water seeping into the axle. It appears to be used for waterproofing purposes before installing the two locknuts to prevent moisture inflow.

[@Mobilant_US]

endless-sphere.com/sphere/threads/bafang-bbsxx-replacement-of-bearings-in-bottom-bracket.65711/

[@hopleoos]

Super !! Finally found somebody who removed the 2 needle bearings .... Thanks folks. I live in the Netherland and cycle in the rain too. One of the bearings was rusty and dirty, the axle had trouble going round. What is the size of those bearings in progessional language ??

[@Mobilant_US]

Thank you. Unfortunately, I don't remember the bearing size. But it will be sold here. s.click.aliexpress.com/e/_DEmZCwN

[@buka9993]

Mine crapped out after 31km, two rides. 😢 From what i gathered online, possibly,, the magnet for the PAS sensor behind the big cog got loose, so now PAS magnet gets dragged, so the motor keeps assisting even if you dont pedal, or even when using the throttle. Brake sensor has to kick in, or PAS set to 0 for it to stop. Now i have trouble with the new design rubber seal on the other side, and cant get inside. Dunno if I even will get a warranty repair... Apparently, putting the bike upside down to adjust the rear derail, at my apartment, was the last straw to get something loose. Strange. No strangee noises, only after 31km...

[@Mobilant_US]

kzbin.info/www/bejne/l4DKoGOFoM-Wr6s Here's a video of inserting a small screwdriver into the axle gap and removing the rubber seal. The method is the same. We recommend replacing the pas sensor and magnet disc. Once you take it apart, you will see that repair is not difficult.

[@buka9993]

@@Mobilant_US I will be sending it for warranty repair. Warranty contractor for bafang is very close by. I don't think it would be possible for BBS02 seal ( new revision ). The seal is very tough rubber, pressed in very tight, and doesn't have any ridges that can have a lever inserted. Screwdriver wouldn't even go in on the sides, because it's such dense rubber. I've seen someone pull it out with skinny pliers, but I don't have ones that would fit. I'd rather just send it for repairs. No to mention parts cost. I've now noticed that there is an audiable "dragging" shhhh sandy sound when the motor operates ( I use walking support by holding minus, it doesn't trigger PAS ). Almost certainly, for some reason, PAS magnet got loose. Dunno how that happened, when on newest BBS02 revision there are no screws holding it ( which get loose after some use, and were a problem ), but a metal(?) tab. Maybe it's a manufacturing defect. Thanks for the advice anyways.

[@Mobilant_US]

@@buka9993 Good choice. Did you ship the item to China via EMS? If so, make sure to frequently check the tracking status. When the item arrives at Chinese customs, be sure to contact the seller. Such items often get held up at customs. If the seller doesn't receive notification from Chinese customs within a week, the item will be returned to you.

[@buka9993]

​@@Mobilant_US Nah. Europe. From what I understand, it goes to an ebike/parts shop / repair shop company ( 50km away from me in Wroclaw city, Poland ) for repairs, and then, they will bill bafang/the seller for warranty repairs. The ebike company is listed as certified Polish warranty repair contractor, in the warranty card included with the motor. I called them, and they said they will repair it there. There is also a bafang factory in Wroclaw city ( dunno if they make BBS motors, I know they make bafang ones with shrouds for store made ebikes ), and a bafang warehouse ( my motor was sent from there, arrived in 1.5 days ). So, at least I have that. Hopefully I will get it back soonish. And working for more than 31km.

[@vforvendetta0013]

My engine have 10000km + not really problem with him

[@buka9993]

Mine crapped out after 31km, two rides. 😢 From what i gathered, the magnet for the PAS sensor behind the big cog got loose, so now PAS magnet gets dragged, so the motor keeps assisting even if you dont pedal, or even when using the throttle. Brake sensor has to kick in, or PAS set to 0 for it to stop. Now i have trouble with the rubber seal on the other side, and cant get inside. Dunno if I even will get a warranty repair...

[@afolabijamiu9453]

I want to repair my motor how can I contact you I am in Lithuania

[@Mobilant_US]

Unfortunately, I do not do repairs. If you tell me the symptoms of the problem, I can give you advice.

[@afolabijamiu9453]

at first the motor was very stiff on pedal assist and stop frequently so i decided to clean and grease it but no effect. also, when i thottle and release it the speed continue until i press break and currently it's showing error 30.

[@Mobilant_US]

Error code 30 indicates a damaged controller if the connector is not connected properly. If there is no physical noise, it is recommended to detach and replace the controller.

[@Mobilant_US]

If you smell something burning when you open the controller cover, it is very likely that the motor coils have turned black due to water or overload. Parts can be easily purchased from AliExpress.