Excellent video, thank you for taking the time and afford to make it. One thing i always do when taking an unfamiliar engine apart is to make notes from the steps i take as well. When assembling just reverse the list and there is almost no chance to forget where everything goes.

Bike Mechanic, I feel like there should be a right to repair law similar to iPhone, but for Shimano di2 and other products. Shimano should be required to sell all individual parts for their products as well as make any special tools easily available, and to set up regional repair centers to send in things like brifters and derailleurs for repair.

I’ve just last week done this on a customers bike and it was not easy at all very difficult but it was my first time so hopefully gets easier the more I do it, great video 👌

Just done mine , followed your vid , motors better than when I bought the bike ty

I managed to rebuild my motor with the help of this video, so thank you very much. I sourced the bearings from a local dealer. They are pretty basic bearings. Couple of points to add. The crankshaft in mine was pretty stuck so it needed some gentle punding to come off. Also the other needle bearing is behind the seal the seal needs to come off temporarily in order to change that.

Hi, Dave. Thank you very much for sharing this video! I have just sent my E8000 to shimano UK and if they fail to fix it I will take it to you to have a look at it. I live in Brazil and will be travelling to Manchester next month. Regards, Francisco.

The circlip on the outside is very malleable and easily deformed. I am considering replacing mine with a better quality one. Thanks for your video. It took me approximately 3 and a half hours to do the whole job. Quite nerve wracking but very satisfied with the result. I have rebuilt hundreds of motorcycle engines so dealing with the tiny wires and circuit boards is a bit of an eye opener. Rejoining the wire ribbon is a trick!! You need to be careful not to put too much grease in the blind bearing holes as it creates a seal that pressurises the cavity when you try to insert the bearing and the shaft. I have been a cycle and motorcycle mechanic for 50 years so I have experienced this before on petrol engines. Cheers .

Thank you for this video! It gave me the confidence to tackle the bearing replacement.

Excellent video. don't need it doing yet but would be confident after watching this, well done.

Great video and thanks for your effort, I have an EP8 that has an internal problem that Shimano will not warrant because I'm the second owner. No one services the motors in Australia so its replacement only at $2200 so I will be doing it myself, thanks again for the helpful tips..

Props to having the time to make this video man

благодарю за Ваш опыт

Heyup Dave. Watched your video with fear and trepidation. My E8000 has done about 14,500 km, but even now it still sounds much the same as the day I bought the bike. Suppose there'll come that fateful day when your excellent video will be indispensable to me . I totally agree with your philosophy, if at first you don't succeed, buy a new engine. Oh yes, battery still very good too.

Thank you so much for this video and recomending those replacement bearing kit for us!

Thank you for sharing your knowledge and experience, well made video, i hope this will bring me further now… cheers mate! Greetings from Germany!

I can see where a support stand would come in handy for this, much like there is for Holley and Rochester 4 barrel carburetors. But the support pin heights would need to be different to match this motor.

Excellent stuff, look forward to seeing other manufacturer motor, videos :)

That was really, really great Dave, thanks so much, as you say, if the warranty's up, then the cost of the bearings, and tools are a small pricen to pay if it's "sh*t or bust" if you'll excuse the expression !

Very interesting and useful video, thank you!

Very scary if the warranty period is lost after 2 years ,hope there is reliable technician like you in my country sir 👍

Great video. Let's hope I will not need to do that, although as a trained car mechanic I am sure this is well within my capabilities.

Top video!

Excellent video :)

very detailed

Thanks Dave for the video, you've convinced me to not buy any bike with a Shimano motor in it. Whew, that was actually a close one :)

Is there any axle seals to replace? Wondering if bearing kit is enough with some sealant tube. Thsnks for the video btw!

Thanks for the video, I'd wondered what the internals look like! I have an E8000 and it is feeling very "draggy", not rough or noisy, just like there is a lot of resistance. Its out of warranty so not sure what to do about it. I'd love to upgrade to the EP8 and wish Shimano allowed some kind of upgrade/conversion, I know physically it fits but electrically it apparently does not :(. Thanks for putting this together!

Brilliant video Dave, thanks for sharing, I've always wondered if it were possible to overhaul a Shimano motor 😀 There's plenty about Bosch motors and I've done my own, but like you said there's none on Shimano. 👍🏻👍🏻

Very clear instructions here. Thanks. Just to note you did not show putting the circling back on the shaft to complete. While tricky it actual looks easier than the Bosh performance line motor. Less bearings. Shame that the seals are not available as water ingress is a real issue with eMTB motors. With no obvious water damage i.e.corrosion, 2500 miles really is not excessive to need a full bearing change for wear. This represents less than 10 miles a day for a year. Disappointing. Can better quality replacement bearing be sourced?

Great vid Dave, very interesting. Can you do one for a Bosch motor, I believe they can be rebuilt also. Certainly doable but one for the shop, 👍

Hello, could you make a video for the shimano ep8? He often has a crank axle play problem. Many thanks for your work and for sharing your investigation.

Hi Dave, interesting video, just wondered why you didnt replace the main shaft seals at the same time as surely they are crucial to keeping the unit water/dirt free?

I've got an issue with an intermittent torque sensor fault accompanied by E010 on my E8000 after pedal strike on a rock, so I followed your video to take a look inside. I was hoping to see a loose ribbon cable, but nothing looked obviously wrong, apart from the fact that I was not able to separate the crank shaft from the torque sensor. It seemed to separate much easier for you and I wonder if that has anything to do with the error I'm seeing. Great video, thoroughly enjoyed the process!

my e7000 started making some very weird noises after exactly 4000km. any ideas? they don't start immediately as soon as i start pedaling but lets say after i put some stress on it

Bravo

Thanks for this great video, but I can’t loosen the aixle, any advices, thanks Peter

i watched this like a crimi, thx a lot°!

Hi Dave, great video. But I have a question. In the video, at 9.06 minutes, when you lift the engine, we see a ring that stayed on the carpet. I don’t understand where this ring was going. Can you help me? Thank you very much.

Hey Dave watched your motor removal and it worked a treat..replacement bearing got crank shaft and wouldnt pull out of speed sensor any tricks a i wiggled and wiggle wouldnt come out?

Magic video mate, Do you know if it is the same for the EP8 motor ? Cheers

Thanks for the well explained instructional video it’s very well done. I have an E8000 that I believe has a buggered bearing so will need to dissect it to inspect the damage. I’m in Australia and parts are not available for at least 9 months. I’m thinking (hoping) I would be able to get a bearing form a local bearing supplier. Would you happen to know what bearing part number/dimensions for this unit would be? Thanks again for the well thought out video.

uuuuaaaauuuuu !!! What a video !!! Thks a lot !! I am overhauling my e8000, and replacing all bearings. Can you tell me, what are the greases that I can apply ?? there's a white and a black one, I have some doubts on the whaite grease. I've read lithim grease, green motoreax, dielectric... and so on... and i'm very confused.. Thanks and congratulations

Internally the motor parts look well built and sturdy and like cars bearing here and there needing replacing, I read and see a lot of E010 errors of peoples motors been knackered and need replacing, Is this like inside of a computer a motherboard hardware problem rather than the moving parts been a problem? If so would replacing the motherboards on these not be thee answer?

Great video , repairing mine at the moment , and having trouble with the needle bearing on the drive side we’re you able to change that, didn’t see that in the video.

great video. absolutely. thx thx thx

Awesome video Dave. I'm waiting to have some drift sleeves made to press the largest 2 bearings on to their respective shafts. Basically steel pipe just wider than the diameter of the shaft, but no wider than the beating inner race. Can I ask a question. There is a 2nd roller needle bearing in the outer most gear sub assembly (the one that has the biggest bearing fitted). Does that neddle bearing also just pop out or does it need to be driven out with a drift or puller?

Ay up and howdo dave, I'm off injured so thanks for the input. What you didn't say dave, was how much is the bearing over all, and is it the same on a 2021 Bosch?

Hi! I was about to order the bearings to do this maintenance but then i saw your video again and heard you say noise from bearings are audible also with the motor off. Well, mine does a Hell of a noise but not with the motor off, so i'm a bit lost now. Is a very strange noise, specially in high torque uses, trail and boost, but motor feels good, is just the noise... Sort of vivration... Idk... Alredy open the motor and bearings fell really good, so if you have any ideas they are more than wellcome... My friends are fed up of my noisy bike lol, It sounds like an ill duck with every pedal stroke. Thanks a lot! Great videos!!! Keep It Up!!

Thanks for the video. It`s really helping me alot. But I really have a problem to get the shaft out of the part you show at 21:18. The sprague bearing is stuck in my motor and needs to be replaced and the shaft wont get loose. Any Tips ? And also do you know where the right sprague bearing can be found ? Thanks for your work. Greetings from Austria

good stuff! love from finland! Subscribed!

Hi Dave great video have you got one for the e7000 earlier model motor also do you sell the bearing kit for them thanks ?

Hello, this video is awe-inspiring! 🙇I would probably suffer a nervous breakdown if I had to do this on my motor... 😲 One quick question about motor-noise diagnostics: What is the reason for scratching, duck-like noises that occur only (and even then only sometimes) when pedalling uphill ? Could it be the bearings still?...would dysfunctional bearings make noises all the time, even when assist is off? Thanks a lot from a "mere rider"😉

Hi , I am not able to release the crank from the tork sensor , is ther le any slip or circlip to get it off ? I mean in your time 8:48 you get it off , but I could not

So informative . I have to make an animation video of this video

Inspired by your video, I took my motor to bits and, unfortuneately I broke the ferrite(?) ring on the main shaft (the one with the torque sensor). Do you know of anyone who has spares for these motors? Thanks for this great video.

Wow. Well done. Definitely a first. Is the 7000 motor the same do you know?

okeey

Hello Dave, execellent video, I have two questions for you: How many kilometer before change the bearings? Can you give me the bearings type?💪

Hi, great stuff, but you did not show how to replace the needle bearing and the largest bearing on the largest/outermost gear ring. Can you plese tell what tool you use for them. Thanks, and all the best, KM

Hey Dave, thanks for sharing. Really appreciate that. Just wondering if you have any spare parts for sale, or any used ones? As my mechanic opened e8000 and discovered one pinion gear's teeth (the one on your left hand at 10:36) is damaged instead of the bearings. Sad.

Thanks Dave.. great video. Do you know approximately how much time or km's are on this motor before this bearing rebuild?? Thanks

Super video! What grease do you use? Thank you. Jan

Thank you very much for the very helpful video. Since my E8000 is constructed slightly differently, the clutch magnet unfortunately broke. can someone tell me where I can buy this? It's a little gray ring. Can be seen in the video at 15:03

do you think , after a basic maintenance, drill a Grease port in apropriate location is a good idea ?

Considering the ingress of dirt and discolouration of the grease, it must be an idea to replace any seals to the outside world in the motor?

I have molykote pg 75 ( some white grease for big gears ) but i saw you use dark grey grease , what is the name of this grease please ? and 2nd question, which bearings press you have ?

Ok so the lists of motor repairs and bearing doesn't mention what specific bearing sizes for the Shimano. Would it be possible for a specific list of bearing sizes so I can buy all of them somewhere before I tear into the motor ??

Hi Dave, great video! Thanks for sharing. Could you provide the bearings info and where to source them from? Thanks!

Probably oil Is better for the lubrication, and It we want we can improve the Gear box with two cups for replace It. The only big problem Is find the right oil for gears wheels and electronics parts.

Can you do a Raking list which motor is the easyest for repairing? This would be for me a buy reason.

Hello, do you know if the plastic gear next to the engine fits the shimano e7000?

Dave, do you think it’s worth wearing a grounding static electricity tether when working on this?

Hi, first of all thank for the greta video you posted, it's the only one in the internet with the whole process. My Shimano motor was making a nasty noise I was able to find in some videos and people was saying it was the bearings F..ed. I was going to buy the bearings and do it myself but as I had to buy the extractors and the press to install the new ones I finally decided to take it to one guy that makes these jobs for some local shops here in Spain. The thin gis I just got my Shimano motor serviced, the guy that made the job replaced the same bearingns you replaced but the nois is still there, I have a noise from the engine when the wheel spins backwards (while cleaning the chain) and also on climbs. the noise disapears for a fes second if I stop pedaling and start pedaling again. I thin kthe issue may come from those sprag bearings you mention. Do you know the service parts of those sprag bearings? I'm prety sure Shimano just buys them I don't think they will manufacture themselves. The noise are these: kzfaq.info/get/bejne/nb5kas5_tNK-gn0.html kzfaq.info/get/bejne/ruB6l7iWnqvHpIU.html Again thanks a lot for all the effort put in that video

I wonder if, after the bearings replacement, the ERROR E010 cames out on the display. thanks for your video anyway

Grinding noise, then followed up with no noise and noticable loss of power as well as feeling the crank having more drag when pedaling. NO ERROR message. Likely faulty bearings? 8500km in all weather in 5.5 years

Hello, is possible to do maintenance on EP8 with more than 2 years and 6.000 klms?

Super Video von dir!! Welches Fett benutzt du? Kann man auch das Weiße von Bosch benutzen? Danke

Hi Dave! Another great video. How can you tell if your bearings need changing? Thx Steve.

Hello , Thank you for this clear and precise video. I have creaks when I force a little on the pedals whether the engine is running or stopped, but especially when the engine is hot. My Steps E8000 engine is from 2017 and has 8500Km. Shimano offers me a paid quote but I don't think Shimano agrees to take it under warranty... This video is great because it will help me replace the bearings myself. I couldn't find the link to buy the bearing kit on your site. Can you tell me where to find it? Thanks again.

Sorry one more thing, my motor (e8000) turns fine in the direction of peddling, but feels quite stiff to pedal backwards, I removed the crank arms and was unable to rotate bottom bracket anti-clockwise.. any thoughts?… thanks in advance

Hi Dave, just viewed this and have a question. On both this, the EP801 and other motors, are there any seals on the housing where the main driveshaft enters/exits the motor? If there are and you can't get replacements, then would it be worth replacing the bearings as you'll not be able to keep the crap out due to the seals being shot?

Hi Dave, can you please Tell us All bearing Types and numbers you are using ? thanks !

awesome video, btw you forgot the shim from 7:54 to installed in minute 31:19 that so bad

nice, but do you haven't any little shim left 7:50 that you didn't put back on the shaft? 30:15 😅

Do you know if the mounting holes are the same as the e5000?

Good stuff. It's ridiculous Shimano won't sell the torque sensor separately..

Hi, can you please help? I have a bike I am servicing for a friend he has the e7000 with, I suspect bearing noise. Can this be done to that motor?

E bike motors seem to be very difficult to work on . maybe it would be better to buy a new motor ? i have a Nox xc mtb with the Sachs rs motor , which is fantastic . however the company won't even allow their handlers to work on them . the motors have to be returned to the factory and a replacement is given . don't know if this is a good or bad thing .

Hi. Do you have code item engine cover Dx whit logo Shimano? I search on-line but no find! 🤔

Great video, just out of curiosity do you have any idea how many miles that motor had done ? keep rolling with these fantastic video's. Thank you for sharing.

Gonna do my own bearings, what gear grease should I use ??

Hello Dave, Could you please tell the Numbers or the dimensions of those bearings that you replaced. Thanks to your great video, I want to replace the bearings in a Steps8000 motor. It would help a lot to have the bearings before hand, so it is possible to disassemble and assemble in one session. Thank you very much in advance from Germany. Albert

Does Vaseline have to be checked at 1500 km? or is it enough to change the bearings?

Hi Dave, Im from the Philippines. I have a Ducati ebike model tk01. Can I ask you a favor if you can help me because my shimano EP8 motor engine is noisy/ rattle. What will you suggest?

21:20 Have you opened this plastic gear before? is there a bearing here that only rotates in the other direction? Mine is stuck

Hi Dave, snapped a Di2 rear derailleur need to replace the cable to a E8000. Does the motor need to be dropped?

hei!! kan you also du the shimano EP8? thanks!!

Great video! I want to overhaul a Shimano DU-E6002, can’t find a replacement set on performance line bearings. Do you have advice or part drawing/numbers?

Hi Dave does the same apply to the Shimano steps e7000

Wich grease do you use for the shimano motor?