67C3K11 5-44123456789Checking the piston ring end gap1. Level the piston ring 1 in the cylinderwith a piston crown at the specified mea-suring point a.2. Measure the piston ring end gap b.NOTE:The figures are for reference only. Depend-ing on how the parts are assembled, theactual measurements may not be within thespecified ranges.Checking the piston ring groove1. Measure the piston ring grooves.Replace the piston if out of specification.Piston ring dimensions:Top ring a:B: 1.17–1.19 mm(0.0461–0.0469 in)T: 2.30–2.50 mm(0.0906–0.0984 in)2nd ring b:B: 1.47–1.49 mm(0.0579–0.0587 in)T: 2.60–2.80 mm(0.1024–0.1102 in)Oil ring c:B: 2.36–2.48 mm(0.0929–0.0976 in)T: 2.75 mm (0.1083 in)(reference data)S67C51291a bPiston ring end gap b (referencedata):Top ring:0.15–0.30 mm(0.0059–0.0118 in)2nd ring:0.30–0.50 mm(0.0118–0.0197 in)Oil ring:0.20–0.70 mm(0.0079–0.0276 in)Measuring point a (reference data):20 mm (0.8 in)Piston ring groove:Top ring a:1.21–1.23 mm(0.0476–0.0484 in)2nd ring b:1.51–1.53 mm(0.0594–0.0602 in)Oil ring c:2.52–2.54 mm(0.0992–0.1000 in)S67C5130abcCylinder block
