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Remove crank arms and secure the brake lever with a cable tie or similar.
Use spider tool to unscrew lock ring (left-hand thread) and remove chain.
Remove O-ring, check for damage, and remove chainring with mounted spider.
Refer to bosch-ebike.net for detailed assembly instructions.
Remove M6 x 10 screws and the chain guard/chain guide adapter.
Note on manufacturer-specific mounts, chain guide, and guard solutions.
Remove two pan head Torx screws M4 x 12 and the design cover.
Remove two pan head Torx screws M4 x 12 from the chainring side cover.
Remove cable ties and carefully detach all cables using flat nose pliers.
Use screwdriver to pry up battery connector latch (1-2 mm) to prevent damage.
Ensure all cables are disconnected and pull them out from the frame interface.
Loosen six M8 x 16 Torx Plus screws in specified order to remove the Drive Unit.
Ensure Drive Unit is secured and cannot fall during removal, possibly in an inverted position.
Check and tighten loose screw connections between the Drive Unit and mounting plates.
Warning: Never loosen mounting plates in motor housing to avoid corrosion/warranty loss.
Place Drive Unit onto the frame interface, ensuring cables are not pinched.
Loosely screw in M8 x 16 Torx Plus screws, then tighten in specified order.
For used units, remove old adhesive and use medium-strength adhesive on screws.
Secure excess cable lengths using cable ties.
Engage plugs with latching lugs, ensuring correct direction and mechanical coding.
Table detailing connection position, color, and voltage for various components.
The Drive Unit can be damaged if a plug is connected incorrectly.
Connect only DC headlamps without a parking light function.
Observe current rating: max. 18 W for lighting, max. 1.5 A output current.
Activate light switch function via Diagnostic Tool and adjust lighting system output.
Lighting must provide light for 2 hours without eBike support per StVZO.
Close unused connections with blanking plugs to prevent corrosion.
Used for 12 V consumers like Bosch eBike ABS, eSuspension. Max output 12V, 1A.
When Bosch eBike ABS is connected, no other consumers can use the Power Port.
Take care not to confuse the Power Port (12V) with the display port.
Attach cover A to the mounting plate of the Drive Unit.
Tighten pan head Torx screw M4 x 12 (self-tapping on first assembly).
Remove protective foil from motor head and logo cover adhesive surfaces.
Position logo cover horizontally and press firmly for at least 10 seconds.
In case of initial assembly, remove the protective foil from the motor head.
Route cables to prevent pinching, then attach design cover to front and rear sections.
Tighten two pan head Torx screws M4 x 12.
Optional fitting if intended by the bicycle manufacturer.
Screw the adapter to the provided screw-on points (ISCG 5-compatible).
Use manufacturer-specific screws with shallow heads; note max screw-in depth.
Grease bottom bracket shaft and tighten bolt M15 x 1 with torque wrench.
Clean and grease the internal interlock of the spider.
Press chainring with spider onto the cleaned, greased interlock.
Slide the O-ring on as far as the spider. Only use intact O-rings.
Grease lock ring threads, push on, and tighten to the left with spider tool.
Grease right-side bottom bracket shaft and mount crank arm with bolt M15 x 1.
General