Canon Paper Craft Special Vehicle 01 Series Assembly Instructions Manual page 6

Wheel Loader
Assemble the left wheels.
(The left and right tires have
different tread directions.)
Cross section
Insert the axles into the body of the wheel loader
and glue the wheels in place, checking the direction
of the tread on the tires and taking care to attach
the left and right tires on their proper sides.
The wheels should spin freely.
Assembly Instructions
Right front wheel
Assemble the right wheels in the same way.
Right rear wheel
Left front wheel
Cross section
Left rear wheel