{HEAD ~ An undercarriage} of a belted or track type machine includes {TAIL ~ a drive wheel} rotatably mounted to the machine and a roller frame assembly pivotally mounted to the machine 
includes
{ HEAD ~ An undercarriage } of a belted or track type machine includes { TAIL ~ a drive wheel } rotatably mounted to the machine and a roller frame assembly pivotally mounted to the machine
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH