GROUP 2 MAJOR COMPONENT GROUP 2 MAJOR COMPONENT 1. MAIN PUMP 1. MAIN PUMP Before inspection, wash the parts well and dry them completely. Inspect the principal parts with care and replace them with new parts when any abnormal wear exceeding the allowable limit or damage considered harmful is found. Replace the seal also when any remarkable deformation and damage are found. 1) 1) PISTON ASSEMBLY AND CYLINDER PISTON ASSEMBLY AND CYLINDER BLOCK BLOCK Check the appearance visually. No damage, scouring, abnormal wear (particularly, in the slide portion) should be found. (1) (2) Check the clearance between the piston outside dia and cylinder block inside dia.
D-d 0.050 mm 2) 2) PISTON SHOE AND PISTON PISTON SHOE AND PISTON Check the axial play of the piston and piston shoe. ε 0.2 mm (1) ε R55NM7PH46 3) 3) SHAFT SHAFT Check the wear amount of the oil seal mounting section. Wear mount 0.025 mm (1) R55NM7PH47 6-19 d D