120C - EXCAVATOR 0130 TRACK SYSTEMS Parts group 0130 TRACK SYSTEMS 0130 TRACK SYSTEMS . TRACK FRAME TRACK GUARD TRACK FRONT IDLER ASSEMBLY AND YOKE TRACK CHAIN TENSION ADJUSTER (SEE ADJUSTER PAGE FOR EXCEPTIONS) TRACK CHAIN TENSION ADJUSTER (FOR SN EXCEPTIONS LISTED ONLY) TRACK CARRIER ROLLER MOUNTING AND COMPONENTS TRACK CHAIN ASSEMBLY AND SHOES TRACK FRAME (FOR USE WITH BLADE) TRACK LOWER ROLLER COMPONENTS