Scraper Blade Unit: mm Serial No. Action Replace Sleeve 1 2 3 Replacement 4 5 20-141 Items to be inspected Judgment Clearance between scraper side moving cylinder shaft and regulator Standard Dimension Tolerance Standard Clearanc e Clearance Limit Axle Hole 120 -0.025 -0.064 +0.142 +0.080 0.105- 0.206 1.0 Wear of cutting edge Maximum 10 mm (to edge of base) Wear of side blade Side: 25 Allowable limit: Maximum 10 mm (to edge of base) Wear of Guide Height: 364 Repairing Limit: Thickness: 21 Wear of Guide Block of Scraper Blade Height: 14 Repairing Limit: Thickness: 33