0-24 Inspection timing Item Every month Every 3 months Every 6 months Every 12 months Every 170 hours Every 500 hours Every 1000 hours Every 2000 hours Instruments Operation I ← ← ← Seat Loosening and damage of mounting Seatbelt damage and function Deadman seat operation I I I ← ← ← ← ← ← ← ← ← Body Damage and cracks in frame, cross mem- bers, etc. Bolts and nuts looseness I T SAS Functions Loosening and damage at sensor mounting portion Damage, deformation, oil leakage and loos- ened installation of functional parts Loosening and damage of wire harnesses Rusting and corrosion of load sensor I I I I ← ← ← ← ← ← ← ← ← ← ← ← I Others Grease up L ← ← ←