12. OPERATION 11. Check seat belt and equipment (if equipped) WARNING Even if there appears to be no abnormality with the seat belt, always replace it once every three years. REMARK The date of manufacture of the seat belt is marked on the belt at the place indicated by the arrow in the diagram on the right. Check that there are no loose bolts on the equipment mounting the seat belt to the machine, and tighten if necessary. Tightening torque: 24.5 ± 4.9 N·m (2.5 ± 0.5 kgf·m, 18.1 ± 3.6 lbft) If the belt is damaged or fluff is starting to form, or if there is any damage or deformation of the seat belt holders, replace the seat belt with a new part. AE061620 12.
Check for loose bolts on ROPS (If equipped) Check for any loose or damaged bolts. If any loose bolts are found tighten them to 2452 – 3050 N·m (250 – 310 kgf·m, 1808.3 – 2242.2 lbft). If any bolts are damaged, replace them with genuine Komatsu bolts. 13. Clean cab window Clean the cab window to ensure good visibility when operating the machine. When cleaning the front window glass, stand on the central step of the front frame. To move the central step of the front frame, articulate the machine and stand on the floor step of the cab, and move to the central step, supporting yourself by grasping the handrails of the cab, etc. 2-35