Cylinder Block: Other Kia Rio II рестайлинг

Boring cylinder

1. Oversize pistons should be selected according to the largest bore cylinder. NOTE: The size of piston is stamped on top of the piston.
2. Measure the outside diameter of the piston to be used.
3. According to the measured O.D (Outer Diameter), calculate the new bore size. New bore size = piston O.D + 0.02 to 0.04mm (0.0008 to 0.0016in) (clearance between piston and cylinder) - 0.01mm (0.0004in) (honing margin.)
4. Bore each of the cylinders to the calculated size. CAUTION: To prevent distortion that may result from temperature rise during honing, bore the cylinder holes in the firing order.
5. Hone the cylinders, finishing them to the proper dimension (piston outside diameter + gap with cylinder).
6. Check the clearance between the piston and cylinder. Standard : 0.02 ~ 0.04mm (0.0008 ~ 0.0016in) NOTE: When boring the cylinders, finish all of the cylinders to the same oversize. Do not bore only one cylinder to the oversize. (1.6 CVVT : Don't use over size)

Scheme 217

Scheme 218

Scheme 219

1. Clean the piston. Using a gasket scraper, remove the carbon from the piston top. Using a groove cleaning tool or broken ring, clean the piston ring grooves. Using solvent and a brush, thoroughly clean the piston. NOTE: Do not use a wire brush.
2. The standard measurement of the piston outside diameter is taken, 39.15mm (1.5413in) from top land of the piston. Standard diameter : 76.47 ~ 76.50mm (3.0106 ~ 3.0118in)
3. Calculate the difference between the cylinder bore inner diameter and the piston outer diameter. Piston-to-cylinder clearance : 0.02 ~ 0.04mm (0.0008 ~ 0.0016in)
4. Inspect the piston ring side clearance. Using a feeler gauge, measure the clearance between new piston ring and the wall of ring groove. Piston ring side clearance No. 1 ring : 0.04 ~ 0.085mm (0.0016 ~ 0.0033in) No. 2 ring : 0.04 ~ 0.085mm (0.0016 ~ 0.0033in) Oil ring : 0.08 ~ 0.175mm (0.0031 ~ 0.0069in) Limit No. 1 ring : 0.1mm (0.0039in) No. 2 ring : 0.1mm (0.0039in) If the clearance is greater than maximum, replace the piston.
5. Inspect the piston ring end gap. To measure the piston ring end gap, insert a piston ring into the cylinder bore. Position the ring at right angles to the cylinder wall by gently pressing it down with a piston. Measure the gap with a feeler gauge. If the gap exceeds the service limit, replace the piston rings. If the gap is too large, recheck the cylinder bore inner diameter. If the bore is over the service limit, the cylinder block must be rebored. (Refer to «Cylinder block crankshaft journal bore mark location»(ref-378913-S42646330662010113000000) ) Piston ring end gap Standard No. 1 ring : 0.15 ~ 0.30mm (0.0059 ~ 0.0118in) No. 2 ring : 0.35 ~ 0.50mm (0.0138 ~ 0.0197in) Oil ring : 0.20 ~ 0.70mm (0.0079 ~ 0.0276in) Limit No. 1, 2, oil ring : 1.0mm (0.0394in)

Scheme 220

1. Measure the outer diameter of piston pin Piston pin diameter : 18.001 ~ 18.007mm (0.7087 ~ 0.7089in)
2. Measure the piston pin-to-piston clearance. Piston pin-to-piston clearance : 0.011 ~ 0.018mm (0.0004 ~ 0.0007in)
3. Check the difference between the piston pin outer diameter and the connecting rod small end inner diameter. Piston pin-to-connecting rod interference : -0.033 ~ -0.016mm (-0.0013 ~ -0.0006in)

Scheme 221

Scheme 222

1. Check the continuity between the terminal and the body with an ohmmeter. If there is no continuity, replace the oil pressure switch.
2. Check the continuity between the terminal and the body when the fine wire is pushed. If there is continuity even when the fine wire is pushed, replace the switch.
3. If there is no continuity when a 49.0kpa (0.5kg/cm 2 , 7.1psi) vacuum is applied through the oil hole, the switch is operating properly. Check for air leakage. If air leaks, the diaphragm is broken. Replace it.