2021 CAT 301.8-05A , Online Owner's Manual , TRACK SHOES (PADS) CONDITION: 50 %, TRACK SHOES (PADS) WIDE: 300 MM, UNDERCARRIAGE CARRIER ROLLERS: 50 %, UNDERCARRIAGE IDLERS: 50 %, UNDERCARRIAGE SPROCKETS: 50 %, UNDERCARRIAGE TRACK ROLLERS: 50 %,