How To Assemble Mecanum Wheels Take the two inner halves of the wheel and line them up so they will go together. Connect the two halves. Take two of the right or left outer pieces. Place the outer pieces on the connect inner piece and line it up so that bolts may be placed through. Put bolts through the outer and inner piece. Hand tighten nuts on the ends of the bolts. Take the end roller pieces. Place a bearing inside of the end roller pieces. Place a small washer on the outer roller. Put a bolt through the piece. Put the bolt through the outer wheel piece. Take a large roller and place a bearing inside of it. Place a washer of the end of the large roller. Place the the large roller with a washer on it on the bolt inside of the outer wheel piece. Place a washer on the other end of the large roller. Put the bolt through the other end of the opposite wheel piece. Place another end roller with a bearing and washer on the end of the bolt. Put a lock nut on the end of the bolt and tighten. Repeat this process for the rest of the wheel spokes. Repeat this process for the other three wheels. Andrew and Jon approved!