2017 CAT 279D , ENGINEPOWER: 74 HP, Online Owner's Manual , OPERATING WEIGHT: 4.5 T, RUBBER CHAIN CONDITION: 80 %, UNDERCARRIAGE CARRIER ROLLERS: 80 %, UNDERCARRIAGE IDLERS: 80 %, UNDERCARRIAGE SPROCKETS: 80 %, UNDERCARRIAGE TRACK ROLLERS: 80 %,