How to fit a Bosch BDU2 Motor refresh kit the easy way.
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- Опубліковано 6 чер 2023
- If you have a noisy Bosch BDU2 eBike motor then this motor refresh kit could be what you need, but how do you fit it, I'm going to show you how the easy way.
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Hi Dave, I've been watching your videos for a while now and have learned a few tricks (stuck seatpost) along the way. However I must say a few things on this one, as if your viewers would do this service repair like in this video, they may have a major problem:
- the most important thing (as from Bosch written in the instruction manual): DO NOT grease the flat surface of the freewheel gear like at 14:10 , where it contacts the large needle roller clutch bearing. If the surface is contaminated, wipe it clean with isopropanol and slide the gear in the new freewheel like at 13:20 - the clutch bearing inside is already greased with the correct type of clutch grease. If you use the white Bosch grease on it, it will most probably slip and not be able to lock under high load.
- clean throulithy between the teeth of the gear - use like a toothbrush a get all the rust/greece mix out of there, before applying the new white grease
- change the o-ring on the shaft after cleaning it with a rag
- there a few other things to consider, which are described in the Bosch instructions...
* I would not use the "sponge" like inserts on the outside of the motor, they soak up water to and are magnet for dust - instead get a proper sealing from my colleague eBike Motor Center UK
Best wishes and greetings from Austria!
e-Bike Motorreparatur
Hi, Thank you for watching and your comments, most useful
That`s a very impressive Presentation with many Informations. Greatings from Germany
Hi, thank you, you too
I don’t own an e-bike, have never owned an e-bike… I don’t even know how I got here… but I got sucked into the video! 😂 Interesting stuff! 👍🏻
I must have that kind of persona, thanks for watching.
Great video 👍
Thanks 👍
Brushless Drive Unit 🤠💯🤟🇬🇧 Fantastic tech 👌
Hi, Thanks for watching
Very Good Job . I installed this Kit in 2 Motors , because the Motor freewheel makes Problems. In the Kit is also a Little Rubberpin , why you dont replace it ?Maybe it is important to do this . Whatever , thank you for your instructive Videos , very good 👌🏽.
Hi, Thanks for watching and your comment
is this refresher available for the 2022 Rail 7? I believe it also has the Gen 2 Performance CX motor. And great video! Cheers!
Hi, thanks for watching, if its a gen2 then yes
Hey Dave, is there a similar kit for Performance Line CX Gen 4 (BDU4xx)? My motor's mileage is already over 15k , no signs of wear yet, but this is inevitable, so I want to be prepared.
Hi, no not as yet
Thanks for the video! I'm surprised that there isn't a gasket between the two parts of the motor case.
Hi, Thanks for watching, there is, it's set in the new cover.
Hi dave...i no you might be busy but just
In case your not...
I have a 2022 trek rail 5 alloy bosch cx gen 4 motor when I ride I get a slight grind or a vibe coming from my crank arms up to my feet well it seems like that I have had the bike on a stand took chain off and turned the the peddles both ways and all seem good no noise or screeching theres no play and all seems tight even crank ring screw ...is it just me and all is ok or could be crank bearings...main pivot....tyres....could it be the torque of the motor
Thanks irene
Hi, Thanks for watching and your comments, sorry for the delay in commenting, best advice I can give is whilst you still have warranty get it to your nearest bosch partner dealer. or give me a call if your within travel distance.
Is the batteries from the 2019 Scott eRide frames the same as the 2022 eRide models?
Hi, not sure you will need to check with scott
Good intel however, I can't get enough mileage out of those POCs to do such a repair...
2 year warranty with some leeway?
Hi, leeway, between 2 and 3 years
Dave them foam sponges are just rubbish, get a proper tailor made rubber seal from Peter at performance line bearings 👍🏻
Love to see you fit one on a gen2 motor 👍🏻🇬🇧
Hi, Thanks for watching and your comment.
Tnx for this video..really educational..do you have links as to where to buy this parts?thank you.
Thanks for watching and your comments. if you would like to buy the kit just give us a call and we will sort you out.
Fantastic educational video Dave. Thank you for your time and for sharing your knowledge.
Your welcome
so what torque settings are the bolts on the motor, also you showed the noise with the chain on in the beginning of the video so why did u not show the same when the chain was on to see the difference
Hi, Thanks for watching, 20nm. Yes I realise I should have done that. the motor was super noisy but equally so was the hub.
@@TheYorkshireBikeMechanic great video though, only problem you don't put enough of them out now, I repair Bosch batteries and brms's so i watch your channel a lot, but for a while u haven't been putting as many videos out as you usually do
does this fit the 2015 GEN 2 Performance Line motor .... came out prior to the Performance CX
yes i think it does but you can ask the ebike motor centre uk or just get them to service the motor for you i got 10.000 miles from my old performance motor
The drive unit must not be repaired if any of the following part numbers applies:
→ If the eBike has a back-pedal brake.
→ The drive unit has one of the part numbers below:
0 275 007 020
0 275 007 021
0 275 007 022
0 275 007 023
0 275 007 024
0 275 007 025
0 275 007 342
Compatible with:
BDU2XX
Scope of delivery
cover (incl. seal, bearing, freewheel) drive gear
gear grease
cover screws
bearing pin with rubber collared bush and protective disc
repair instructions
Service kit Felt Ring BDU2XX 1270020162
The bearing with bearing protection ring and bearing protection grease is pre-assembled
Why do some ebikes have tiny front chain rings like this one? will you not be spinning out?
these motors are geared between the crank and chainring so the 16 tooth is more like a 34. the gearing on this gen2 bosch performance line cx is 2.21 im pretty sure.
Hi, Thanks for watching and your comment, thanks to Chris for explaining
I’ve taken the side of the motor off, however the big white cog will not come off, it still spins but has no forward to back movement. What next?
not sure what you mean, can you send photos?
Most of that was from the rear wheel bearings was it not?
Hi Thanks for watching, to be honest both the motor and the hub was just as noisy.
@7m clever that :)
Hi, thanks for watching and your comments
A Big Hello 👋 😊
Hi to you too, thanks for watching
The retailer I bought my Bosch powered ebike from also fitted a tuning dongle for me while promising that it would not affect any Bosch warranty claims as long as they are made through them. Presumably they will remove the dongle before carrying out any motor service, software upgrade or diagnostics - but evidently it is their choice to honour the warranty.
Before anyone says that a tuning dongle shortens the life of the motor, this is disputed by a reputable motor repairer in the south of England who states that in several years of servicing Bosch motors they have seen no specific wear attributable to a motor that has been derestricted. Water ingress is the main cause of wear, and this could be reduced by the manufacturer using better seals, but this would reduce the range by a few kilometres which would allow competitors using less tight seals to claim a range advantage!
How you choose to ride your bike is your responsibility. I enjoy the elimination of the cut-off without feeling compelled to always take advantage of the possibility of riding at a higher speed. I ride according to the prevailing conditions with or without a motor - restricted or not. I always ride with reasonable respect for the safety of others and myself. The only times I ride at real speed (over 25mph) are when the motor is not contributing because gravity has taken over. Perhaps gravity should be restricted?
Hi, Thanks for watching, attaching a tuning device will void your warranty, no matter who fits it. The reputable motor repairer is correct, it's unlikely that the motor will wear quicker, providing that it's ridden responsibly, however the chain, cassette and front ring will have a shorter life together with hubs and such like will also need additional servicing.
Hi Dave, I've been thinking about what you said regarding wear of the drivetrain. The vast majority of effortful riding takes place below the cutoff limit, and so additional wear on a derestricted bike will be marginal compared to a restricted one. Of course, without empirical data we can only make an educated guess (coloured by any respective bias we might have ;) ) I'd hate to encourage others to use me as an example as I tend to aim towards maximising range over speed, but my experience certainly leads me to believe that the most wear must occur when the most power is being applied through the drivetrain. And that's when grinding up those steep hills on higher levels of assist, or accelerating from a standing start, standing up on the pedals - and I'm never going over the cutoff limit then!
I am going to update my gears though, in the hope that going from 9 to 12 speed with a bigger cog on the front will give me a higher top speed before spinning out, and better climbing up the steepest hills on moderate power settings. But for the reasons of longevity and reliability that you've described, I won't be going for the more expensive refined options, instead sticking to a humble combination of Deore components.
Without the motor, and without it being derestricted, I'm pretty sure I'd never have got back into cycling after a 30 year break! Being able to regulate the motor contribution at all speeds and according to my physical need is important to me as I had a heart attack a while back, and the ebike (and giving up smoking) has allowed me to gradually become fitter than I have been since I used to surf everyday. I'd say it's been a lifesaver, in fact. @@TheYorkshireBikeMechanic
These same motors are used to power a bike in the states to 28mph, so its unlikely it does anything to the motor.
Ay up dave long time no see
Thanks, hope you are well
Toddle pip! How much is a refresh kit? I need three!
Hi, £98.57 each, let me know I will post some out to you
Gloves off at 9:06 , I knew they wouldn't stay on too long 😂.😂.
You know me tool well, bloody gloves
Dave,you only use your black mamba gloves for one minute mate..😂😂😂
Bloody hell, cant do with them
Tha'll be doin' thisen aaaht on a job at this rate!
no, theres plenty to go at
@@TheYorkshireBikeMechanic Good! You know your stuff and thanks for sharing!
quick question: why not to replace just one bearing? bearing will cost ~$10
Would suspect the others a lot lot more work to get to and if it only fails at 1/4-1/3 of the rate the front plate one does why would you bother?
you can just change the bearing but bosch has custom ones made for these motors and you can get them from the ebike motor center uk or just get the hole kit and replace them all tho you will need a shop press or just get them to service the motor for you
Monkey Magic, you are correct
I’m surprised that the Gen 4 CX motors are as noisy as they are. The power output is great on those but it seems like the engineers decided to chuck out a prototype to the public without much thought
Hi Thanks for watching and your comment, ebike technology is still in it's infancy I feel
Good info… where are you based? I’m HX4
Hi Thanks for watching and your comment, HX6 2LB
ill come to your shop one day to have my bike service
You would be welcome
Job’s a good ‘un
Hi Thanks for watching
15.6 mph is simply a stupid slow speed. Its why many ppl do that mod
Bearings shouldn't need to be changed that often. Just look at your car!
Hi, Thanks for watching and your comments. I agree john but the fact is they don't and its down to the manufactures to develop motors that last.
@@TheYorkshireBikeMechanic we pay over the odds really for these ebikes, but there is no alternative if we want something thats electric, legal, doesn't need tax, insurance etc and can go most anywhere then you have to pay the price. My most expensive classic 1971 Honda CB175 SS cost me just under £3k and myTrek Rail 5 cost £4150 2 years ago, though the pleasure I've had from it has been immense. A new dimension in cycling after 10 years with my Giant Anthem X3 29er
Cheap looking plastic cogs... Bosch quality? I don't recommend Bosch even if they sell lots of motors.. They are overpriced and not reliable..
Hi Thanks for watching and your comment
A nother great video dude 👏,
The plastic cogs are in place
They are silent in comparison wit metal
All ebike mors have plastic cogs
It’s normally the operator, not bosch motors problems, anything will fail if you give it to people without a clue, 👍🏻
100% I'm on my 5th Gen 2
Hi dave,where do you get the foam rings from please 👍
Hi, they are readily available, we get them direct from bosch. Just google "Felt Ring Service Kit (BDU2XX)"
@@TheYorkshireBikeMechanicgreat,thanks dave 👍
Don’t use them they are rubbish. You can get a proper rubber seal that it’s much better.
@@4l3xrwhere can I buy it ?