4) Crank shaft end play Assemble the crankshaft to the cylin- der block. With a dial gauge, measure crank- shaft end play. 3.2. 8. Piston 1) Visual check Visually check the pistons for cracks, scuff or wear, paying particular attention to the ring groove. 2) Clearance between the piston and cylinder liner With an outside micrometer, measure the piston outside diameter at a point 18mm away from the lower end of pis- ton skirt in a direction at a right angle Position of measuring outside diameter 외경 측정위치 to the piston pin hole.
18mm EAMD066I Using a cylinder bore gauge, measure cylinder liner inside diameter at 3 points (cylinder top ring contacting 2 face, middle, and oil ring contacting face on BDC) in a direction at an angle of 45˚ Take the mean value with the largest and smallest values excepted. EAMD067I The clearance is computed by subtracting the piston outside diameter from the cylinder liner inside diameter. Replace either piston or cylinder liner, whichever damaged more, if the clearance is beyond the specified limit.
Clearance between piston and liner - 72 - INSPECTION AND MEASUREMENT Standard Limit 0.15 ~ 0.325 mm 0.5 mm Standard N122.873 ~ N122.877 mm Standard Limit N123 ~ N123.023 mm N123.223 mm Standard 0.113 ~ 0.152 mm