Remove the wheel set. Clean the wheel contact wipers if they are dirty. Note the gears inside the engine.
These are the gears that the new wheel set needs to engage.
With the DCC logo to your left as shown, install the new wheel set so that the solid sides of the gears are
toward you and they mesh with the driving gears underneath (see red lines).
Make sure the wheels are quartered. The wheels shown below are slightly out of quarter.
