Introduction: Repairing the front wheel of a Dualtron Mini
Hello everyone, in this tutorial, we will show you our method for changing a tire and inner tube on the front wheel of a Dualtron Mini. We find that this is a relatively technical repair that cannot be done without using good tire levers.
This repair can be quite technical, and having good tire levers is essential. If you have alternative methods or helpful tips to share, please feel free to leave a comment to help the community. Different approaches and insights are always valuable in the DIY community.
Removing the Front Wheel
Alright, let’s get started. We begin by removing the two rubber covers on the left and right sides of the scooter.
Next, release the drum brake cable by unscrewing the small nut attached to the end of the metal rod.
Take out the cable from its housing and remove the spring.
And retrieve the small pin.
Then, disassemble the front wheel by unscrewing the nut using an 18mm wrench.
And remove the locking washer.
Next, repeat the same steps for the other side of the Dualtron Mini.
Then, gently tap on the left and right sides of the axle with a mallet to make the wheel come out downwards.
And there, retrieve the two washers and the two spacers.
Pull on the wheel axle and remove the removable part of the brake assembly.
Removing the Old Tire
Next, remove the valve cap and ensure the inner tube is deflated.
Press on the edges of the tire to detach it from the rim.
Removing the First Tire Bead
Remove the first bead of the tire using tire levers and liquid soap for lubrication.
Continue around the tire until the first bead is completely outside of the rim.
Removing the Old Punctured Inner Tube
Push the valve inside the wheel, then pull the inner tube out.
Removing the Second Tire Bead
Apply soap and use tire levers to remove the second tire bead.
Reassembling the New Tire (Side 1)
Now, we will install the new tire and inner tube. Purchase links are available in the video description.
Check the tire’s rotation direction before mounting it on the rim.
The valve hole is offset on the right side of the rim.
Insert this part first into the tire.
Apply some soap around the tire and wheel.
Insert the rim into the tire by pushing gradually with a tire lever.
Installing the New Inner Tube
Install the inner tube on the front wheel with the valve on the opposite side of the brake.
Press on the side of the tire and insert the valve into its housing.
Deflate the inner tube completely.
Then, install the inner tube inside the rim, making sure no part is sticking out.
Reassembling the New Tire (Side 2)
Now, we will install the second part of the tire into the rim. Use zip ties to facilitate the process.
Place the first zip tie around the wheel without tightening it.
Then, position both sides of the tire into the rim.
Tighten the zip ties to hold the tire in place.
Apply some soap around the tire to facilitate the process.
Continue installing the tire gradually onto the wheel, using tire levers and zip ties, until it’s fully in place.
The secret is to progress centimeter by centimeter without trying to fit a whole edge at once.
Removing the Zip Ties
Now that the tire is in place, remove the zip ties. You can cut them or open them by pushing the locking tab down and pulling the tie simultaneously.
Inflating the Front Wheel (Pressure)
Now, inflate the tire to the recommended maximum pressure of 3.5 bars or 50 PSI.
Reinstalling the Front Wheel
Put the drum back on the front wheel.
Pass the axle through the wheel.
Place both spacers and install the two locking washers in the same direction.
Put the front wheel back on your Dualtron Mini with both washers pointing downwards. The rod that holds the brake in place should snap into the drum notch.
Reinstall the two external locking washers and tighten the front wheel by putting back the two nuts.
To secure the brake, install the small pin on the drum lever.
Then, slide the spring onto the cable and pass the cable through the pin.
Put the nut back on the end of the brake cable.
Front Brake Adjustment
To adjust the brake, rotate the wheel and listen if the brake pads touch the drum. Tighten the nut gradually until you hear slight friction, then loosen it slightly.
Finish by putting the nut caps back in place.