2020 CAT 320-07C , Online Owner's Manual , TRACK SHOES (PADS) WIDE: 600 MM, UNDERCARRIAGE IDLERS: 40 %, UNDERCARRIAGE SPROCKETS: 40 %, UNDERCARRIAGE TRACK BUSHINGS: 40 %, UNDERCARRIAGE TRACK LINKS: 40 %, UNDERCARRIAGE TRACK ROLLERS: 40 %,