User Manual Q&AAnswer
Feb 25, 2025 - 11:37 PM
To remove and install the Rungu Dualie Chainguard, you will need a few tools and follow the steps outlined in the instruction manual.
1. Tools required:
- 4 mm Hex Wrench
- 8 mm Hex Wrench
- Park Tool CCP-22 Crank Puller, or equivalent.
- Chain whip (suggested purchase)
- Bike Chain master link pliers (suggested purchase)
2. Removing the right crank arm:
- Rotate the chain to find the master link on the return side (bottom) of the chain.
- Use the master link pliers to compress the master link and disconnect the chain.
- Drape the upper length of the chain over the chainstay.
- Use the 8mm hex wrench to unscrew and remove the crank arm bolt.
- Install the crank puller into the crank arm, ensuring not to cross-thread the mounting nut.
- Rotate the crank arm puller clockwise to remove the crank arm.
- Unscrew and remove the crank arm puller from the crank arm.
3. Installing the chainguard:
- Use the chain whip to stabilize the chainwheel.
- Use the 4mm hex wrench to loosen and remove each of the five screws holding the chainwheel to the motor.
- Place one of the M5x14 screws with a split washer through the chainguard and chainring.
- Align both with a mounting hole on the motor and finger tighten the xxxx .
- Install the next xxxx and split washer into a mounting hole on the opposite side of the spindle.
- Finger-tighten the second xxxx , then install and finger tighten the remaining three screws and washers.
- Use a 4 mm hex wrench to hand tighten each xxxx in a crossing pattern.
- Use the chain whip to secure the chainring and fully tighten each xxxx using the same crossing pattern.
4. Replacing the crank arm and chain:
- While holding the left-side crank arm vertically, install the right crank arm 180 degrees opposite the left-side onto the square shaft.
- Insert the crank arm retention bolt and begin threading it into the drive axle.
- Use the 8 mm hex wrench to fully tighten the crank arm retention bolt to the drive axle.
- With the crank arm in place and fully tightened, drape the drive side (top) chain over the top of the chainring.
- Use the master links to reconnect the return side (bottom) of the chain.
- Use the master link pliers to spread the master links and snap the master link in place.
Please refer to the Rungu Dualie Chainguard Instruction Manual for more detailed instructions and illustrations.
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