Things You'll Need
Instructions
Turn the wagon on its side so that the wheel you want to change is on top.
Stick your paint key or screw driver into the area between the push cap (the cap in the middle of the wheel) and the "hubcap" and dig the blade under the circumference of the push cap, working your way around. Continue going around and digging into the push cap until it pops off.
Shimmy your blade under the exposed ring cap and work around it to loosen it, using the same method you used to remove the push cap. When there is enough space between the ring cap and the wheel, use your pliers to twist it off completely.
Twist and pull the wheel off the axle and remove it. You can do this with your hands.
Firmly push your new wheel onto the axle until it locks.