Bosch ebike motor reliability

[soundwave]

i use the muck of wet dry lube for my chain but there is this for the motor bearing.

http://www.pro-cycling-golla.de/Motor_und_Zubehoer/Service-Kit_Lagerschutzring_Zur_Abdeckung_der_Lagerstelle_der_Antriebseinheit_artikel582b57b18a5a6.html

tho any grease will do just to stop crud getting to the bearing

ur not using that on it i hope?

 

[Trevormonty]

Try to keep degreasers away from chainring and bearing. Clean chainring with brush, cloth and maybe plastic pick, shouldn't need degreaser.

 

[Ballynoes]

I’m just a little cautious about spraying lube and de-greaser around the motor sprocket, I take mine off every time to clean it so I don’t inadvertently spray de-greaser etc. into the motor bearings, OCD I know but the more time I take to look after the motor… hopefully the longer it will last. That said I have no problem taking it apart and replacing the bearings myself, but who want to do that.

 

[Stephen Gray]

i use the muck of wet dry lube for my chain but there is this for the motor bearing.

http://www.pro-cycling-golla.de/Motor_und_Zubehoer/Service-Kit_Lagerschutzring_Zur_Abdeckung_der_Lagerstelle_der_Antriebseinheit_artikel582b57b18a5a6.html

tho any grease will do just to stop crud getting to the bearing

ur not using that on it i hope?

 

[Stephen Gray]

Thanks Soundwave and other contributors.

I have been using Muck off dry lube spray, but it looks like the version for damp rather than wet conditions.

Realised today I could not check the chainring or lockring, as I lost my allen key for the crank, looks like an 8mm size.

Also I do not have the tool to remove or tighten the lockring, any idea what it is and where I get one ?

I have lubed chain today so let's see what happens on next ride ?

 

[soundwave]

you will need a crank puller to remove the crank arm but one comes with this lock ring tool.
https://www.ebiketuning.com/shop/tools/ebikespider-with-crank-puller.html

tho when there of you can fit these so no need for a crank puller.
https://www.ebay.co.uk/itm/FSA-Bicycle-Self-Extracting-Crank-Bolts-M8-ISIS-BB-Bottom-Bracket-Steel/142394170318?epid=1523201401&hash=item21275a9bce:g:7vIAAOSwhvFZJzJo

if you have not got one then id get a cheap bike stand to work on it other wise it is a pita.
https://www.ebay.co.uk/itm/PRO-HOME-MECHANIC-FOLDING-BIKE-BICYCLE-CYCLE-REPAIR-WORK-STAND-RACK-ADJUSTABLE/282754502951?epid=843914615&hash=item41d57b5127:g:4j4AAOSwYAdZlsME

 

[Steve UKLSRA]

I've got a genuine Bosch socket for the lockring if you want to save some money...only used a couple of times and as new.

 

[Trevormonty]

Bike discount sell, tool, spare locking ring nuts(PN20025729) and orings that go with them. Also bearing service kit and grease(PN20034759). NB locking rings do wear where tool engages.

 

[Stephen Gray]

I've got a genuine Bosch socket for the lockring if you want to save some money...only used a couple of times and as new.

Hi Steve,

How much are you asking for this please, including postage ?

 

[Deere John]

My CX motor failed after almost 3000km (1819 miles). The bearing suddenly got very stiff and it was hard to pedal, if you just remove chain and try to pedal. It was under warranty though so it was sent to Bosch and they sent me a brand new motor. My motor was from 2016 and it got replaced with a slightly newer version. If there are any differencies!?

 

[Deleted member 4366]

This is turning out similar to the Kalkhoff Impulse debacle. It was only a couple of months ago that people were recommending Bosch as the most reliable motor. I can see this problem being a real nuisance for anyone that didn’t buy their bike from a local dealer.

 

[Trevormonty]

My CX motor failed after almost 3000km (1819 miles). The bearing suddenly got very stiff and it was hard to pedal, if you just remove chain and try to pedal. It was under warranty though so it was sent to Bosch and they sent me a brand new motor. My motor was from 2016 and it got replaced with a slightly newer version. If there are any differencies!?

The replacement should have seal protector, which you should replace regrease every month if wet may less when dry. See earlier posts for PNs and suppliers.

 

[falmouthtony]

I've got a genuine Bosch socket for the lockring if you want to save some money...only used a couple of times and as new.

How much Steve?

 

[Steve UKLSRA]

How much Steve?

£20 plus jiffy postage any good? Was £35 delivered from e-bikeshop.

 

[Russelliow]

I've booked my bike in with the local bike shop. It's making a scouring noise sounds like a dry bearing. It's only done 800 miles.

 

[Doomanic]

I've got a genuine Bosch socket for the lockring if you want to save some money...only used a couple of times and as new.

If this hasn't sold, I'll take it.

 

[soundwave]

you can get a spanner here if it is sold.
https://www.ebiketuning.com/shop/tools/ebikespider.html

 

[Trevormonty]

you can get a spanner here if it is sold.
https://www.ebiketuning.com/shop/tools/ebikespider.html

How does compare to nut driver version. I'm always having problems with mine slipping and damaging nut/chainguard splines.

 

[soundwave]

never had any problem like above with the spanner i have and no damage.

 

[Doomanic]

Bike Discount are out of stock, but Merlin Cycles have them as well, https://www.merlincycles.com/bosch-lock-ring-tool-101055.html