69J1D11 5-48123456789Checking the cylinder bore1. Measure the cylinder bore (D1–D6) atmeasuring points a, b, and c, and indirection d (D 1, D 3, D 5), which is parallelto the crankshaft, and direction e (D2 ,D4 , D6 ), which is at a right angle to thecrankshaft.a 20 mm (0.8 in)b 60 mm (2.4 in)c 100 mm (3.9 in)2. Calculate the taper limit. Replace orrebore the cylinder block if out of specifi-cation.3. Calculate the out-of-round limit. Replaceor rebore the cylinder block if out of spec-ification.Checking the piston clearance1. Rebore the cylinder or replace the pistonand piston rings as a set, or the cylinderblock, or all parts if out of specification.Checking the piston rings1. Check the piston ring dimensions of Band T. Replace if out of specification.2. Level the piston ring 1 in the cylinderwith a piston crown.3. Check the piston ring end gap d at thespecified measuring point. Replace if outof specification.Piston diameter a:93.921–93.941 mm(3.6977–3.6985 in)Measuring point b:5 mm (0.2 in) up from the bottom ofthe piston skirtCylinder bore (D1–D 6 ):94.00–94.02 mm(3.7008–3.7016 in)Taper limit:D1–D 5 (direction d)D2–D 6 (direction e)0.08 mm (0.0032 in)Out-of-round limit:D2–D 1 (measuring point a)D6–D 5 (measuring point c)0.05 mm (0.0020 in)S69J5B70D1D2D3D4D5D6Piston clearance:0.075–0.080 mm(0.0029–0.0031 in)Piston ring dimensions:Top ring a:B: 1.17–1.19 mm(0.0461–0.0468 in)T: 2.8–3.0 mm (0.110–0.118 in)Second ring b:B: 1.17–1.19 mm(0.0461–0.0468 in)T: 3.6–3.8 mm (0.142–0.150 in)Oil ring c:B: 2.40–2.47 mm(0.0945–0.0972 in)T: 2.3–2.7 mm (0.091–0.106 in)Cylinder block
