Notice: These instructions require two people to safely and most easily remove and reinstall the rear wheel.
Read through these instructions and contact Rad Power Bikes Technical Support if you have questions. If you are not confident in your ability to successfully and safely perform all steps, we recommend having the work performed by a local, certified, and reputable bike mechanic.
1. Power off the bike. Ensure the bike is in the off position and use the key to remove the battery. Once removed, press and hold the “MODE” button on the LCD Display Remote until the display remains off for about two seconds (it may flash on briefly). This ensures the power is fully discharged from the bike and it is safe to work on.
2. Gather the tools needed: a 15mm crescent or deep socket wrench, flat side cutters, torque wrench, and wooden blocks or books approximately 2" in height.
3. Have a friend help you turn the bike upside down. Set up blocks the width of the handle bars and have a friend help you carefully flip the bike upside down, resting the handlebars on the blocks to prevent the screen and controls on the handlebars from being damaged as shown.
4. Free the motor cable from the frame. Locate the motor connection, on the brake disc side of the bike. Use flat side cutters to snip the zip tie holding the cable to cable guide on the chainstay of the frame, using caution to not damage cables, paint, or the frame. Unplug the motor connector by holding the counnerctor housing and pulling both ends directly apart without twisting. Pass the connector end out from between the frame and splash guard as shown.
5. Note the order of the nuts and washers on either side of the axle by closely inspecting and/or taking a photo. This motor hardware must be reinstalled in the exact same way or unsafe riding conditions and/or damage to the bike/motor could occur.
6. Use the 15 mm wrench to loosen the axle nuts, located on each side of the motor. Either loosen enough to remove the wheel from the dropouts while keeping the axle nuts installed, or remove each axle nut along with the outside washers, keeping them in order, which is critical for accurate re-installation. If removed, the hardware will look like this:
7. Lift the wheel/axle out of the dropouts. Once the axle nuts have been adequately loosened or the axle nuts and washers have been removed, make room to remove the wheel by raiding the kickstand to vertical and pulling up and backwards on the derailleur body to move it out of the way. While holding the derailleur with one hand, use the other hand to pull up and forward on the rim of the rear wheel to remove it from the bike.
If the hardware is removed, when the wheel is removed from the dropouts, the cassette side of the axle will look like this:
8. Perform necessary maintenance such as changing a tube/tire, swapping in a new wheel/motor assembly, etc.
NOTICE: If you do not have the experience, skill, and tools to complete necessary maintenance, Rad Power Bikes highly recommends having a certified, reputable bike mechanic complete these procedures as well as any future repairs, adjustments, and/or tuning.
9. Reinstall the rear wheel. Pull the derailleur body up and back to make room for the axle, align the smallest cog in the cassette with the chain, and lower the brake disc into the caliper and the axles into the dropouts. Ensure the torque washers are pressed against the inside of the axle, and the tab of the torque washers that points outwards, fits between the dropouts exactly as it was installed previously.
10. Properly reinstall axle hardware. Replace the washers and/or re-tighten both axle nuts. Torque both axle nuts to 40 Nm.
Use a torque wrench to ensure that the axle nuts are tightened down to 40 Nm. Improperly torquing the axle nuts could cause unsafe riding conditions, damage to the motor, bike, and/or property, serious injury, and even death. If you have any questions regarding this step, please contact Technical Support.
11. Re-install the motor connector. Align the internal pins and external arrows of the motor connector ends and carefully press them directly together without twisting to fully seat the connection. Use zip ties to attach the motor cable to the cable guides on the chainstay and use flat side cutters to snip zip tie excess.
12. Reinstall the battery, test the bike fully, and have your work inspected by a certified, reputable bike mechanic.
For questions or assistance, please contact Rad Power Bikes Technical Support by email to firstname.lastname@example.org or by phone to (800) 939-0310 x 2.