171-12 Fastening of each part●Bolts and nuts may be loosened after repeated use of the machine. Be sure to inspect and retighten them by the specified torque.● Tighten the following bolts and nuts by the following specified torques.Part Code No. Part name Quantity Appropriate tightening torque RemarksN . m (kgf . cm)3WD front wheelK0014120602 12 heat-treated bolt 60P1.5 4 67-85 (670-850)K0014120452 12 heat-treated bolt 50P1.5 4 67-85 (670-850)K0160000492 24 Special nut P1.5 1 180-200 (1800-2000)Front wheel arm K0013100502 10 heat-treated bolt 50 1 29-38 (290-380)Rear wheel K0034120302 12 heat-treated 8T bolt 30P1.5 4 67-85 (670-850)K0160000492 24 Special nut P1.5 2 180-200 (1800-2000)● Tighten other bolts and nuts by the following specified torques.NominaldiameterAppropriate tightening torque [Normal bolt Hardness classification 4.8] NominaldiameterAppropriate tightening torque [Heat-treated bolt Hardness classification 10.9]N . m (kgf . cm) N . m (kgf . cm)M5 3-5 (30-50) M6 14-18 (140-180)M6 7-9 (70-90) M8 28-38 (280-380)M8 14-19 (140-190) M10 58-76 (580-760)M10 29-38 (290-380) M12 104-134 (1040-1340)M12 52-67 (520-670) M14 140-188 (1400-1880)M14 70-94 (700-940) M16 210-260 (2100-2600)● Open the front cover to check whether the steering chainis loose (refer to 6-3 ) or damaged.1-10 Inspection of the steering chain1-11 Oil coolerBe sure to clean off any dust thatadheres to the oil cooler. If youoperate the machine in a dustyarea, clean the oil cooler morefrequently than usual.● Failure to cleanthe oil cooler willcause the hydraulicequipment to fail. Oil cooler● Make sure that the brake wires are not cracked ordamaged.● Make sure that the parking brake works on a slopeand that the brake does not make any noise when it isreleased. If you notice any irregularities with regard tothe performance of the brakes, adjust the brake wires(refer to 6-4 ) and inspect the parking brake.1-9 Inspection of the brakes1-8 Inspection of the tires●Check the tire pressure, and inspect the tires for cracks, damage, andunusual wear.Tire pressurekPa (kgf/cm2)Front wheel 70 (0.7)Rear wheel 40 (0.4)