4 Inspection Period lt em Clearance between drum and lining Wear of shoe sliding portion and lining Drum wear and damage Brake drum and brake Shoe operating condition shoe Anchor pin rusting Return spring fatigue Automatic adjuster function Months 1 3 6 12 Hours 170 500 1000 2000 Brake drum and brake shoe M I I I I M I 0 0 0 0 0 0 0 0 0 0 Backing plate Deformation, cracks and damage Loose mounting I T 0 0 MATERIAL HANDLING SYSTEM Forks Abnormality of fork and stopper pin Misalignment between left and right fork fingers Cracks at fork root and welded part I I I *3 0 0 0 0 0 0 0 0 0 Mast and fork bracket Deformation and damage of each part and crack at welded part Mast and lift bracket looseness Wear and damage of mast support bush Wear, damage and rotating condition of rollers Wear and damage of roller pins Wear and damage of mast strip I I I I I I 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Chain and wheel Tension, deformation and damage of chain Chain lubrication Abnormality of chain anchor bolt Wear, damage and rotating condition of chain wheel I I I I 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Various attachments Abnormality and mounting condition of each part I 0 0 0 0 HYDRAULIC SYSTEM , Cy inder I Loosening and damage of cylinder mounting Deformation and damage of rod, rod screw and rod end Cylinder operation Natural drop and natural forward tilt (hydraulic drift) I I I 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0