0-23 Inspection Period Item Every 6 weeks Every 3 months Every 6 months Every 12 months Every 250 hours Every 500 hours Every 1000 hours Every 2000 hours POWER TRANSMISSION SYSTEM Transmis- sion & torque con- verter Oil leak and oil level Control valve and clutch functions Inching valve function Torque converter stall inspection and hydraulic pressure measurement Torque converter oil replacement Torque converter oil filter replacement Torque converter rubber hose replacement I I I ← ← ← ← ← ← T ← ← ← ← I I I Propeller shaft and drive shaft Loosened joint Looseness at spline portion Looseness at universal joint Propeller shaft runout Axle shaft twist and crack T I ← ← ← I I I ← Differential Oil leak and oil level Differential oil replacement Bolts and nuts looseness I ← ← I I Planetary gear Oil leak and oil level Planetary gear oil replacement I ← ← ← I ELECTRICAL SYSTEM Battery Fluid level Fluid specific gravity Terminal connection state I ← I I ← ← ← ← ← ← Electrical wiring Loosened or damaged connection Wire harness damage and clamp loosening Fuses I I I ← ← ← ← ← ← ← ← ← Starting motor Pinion gear meshing state I ← ← ← Charger Charging function I ← ← ← Preheater Glow plug function I ← MATERIAL HANDLING SYSTEM Fork Fork deformation and wear Fork root and tooth weld crack and wear Fork shifter damage and wear I I I ← ← ← ← ← ← ← ← ← Mast and lift bracket Deformed or damaged part and crack at welded portion Roller bearing looseness Mast and lift bracket looseness Mast support bushing wear and damage Roller and roller pin looseness and damage Chain greasing condition Chain deformation, damage and rusting I I I I I ← ← ← ← ← ← ← ← ← ← ← ← ← I I ← ←