2011 CAT 345DL , Online Owner's Manual , OPERATING WEIGHT: 49.8 T, TRACK SHOES (PADS) CONDITION: 40 %, TRACK SHOES (PADS) WIDE: 600 MM, UNDERCARRIAGE CARRIER ROLLERS: 50 %, UNDERCARRIAGE IDLERS: 50 %, UNDERCARRIAGE SPROCKETS: 40 %, UNDERCARRIAGE TRACK BUSHINGS: 65 %, UNDERCARRIAGE TRACK LINKS: 60 %, UNDERCARRIAGE TRACK ROLLERS: 50 %,