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− − 01 02 S6M6A00A18360245611KBAT00 − − − − − − − − − − − − Piston Ring End-Gap 0.35 mm (0.008 0.014 in.) Service Limit: 0.60 mm (0.024 in.) Second Ring: 0.55 mm (0.016 0.022 in.) Service Limit: 0.70 mm (0.028 in.) K20A2, K20Z1 Engines: 0.65 mm (0.020 0.026 in.) Service Limit: 0.75 mm (0.030 in.) Oil Ring: 0.65 mm (0.010 0.026 in.) Service Limit: 0.75 mm (0.030 in.) K20A2, K20Z1 Engines: 0.70 mm (0.008 0.028 in.) Service Limit: 0.80 mm (0.031 in.) 7-22 Engine Block Piston Ring Replacement B A A B 15 20 mm (0.6 0.8 in.) 1. Remove the piston from the engine block (see page 7-13). 2. Using a ring expander (A), remove the old piston rings (B). 3. Clean all ring grooves thoroughly with a squared- off broken ring or ring groove cleaner with a blade NOTE: If the piston is to be separated from the 4. Using a piston, push a new ring (A) into the cylinder bore 15 20 mm (0.6 0.8 in.) from the bottom. 5. Measure the piston ring end-gap (B) with a feeler gauge: • If the gap is too small, check to see if you have the proper rings for your engine. • If the gap is too large, recheck the cylinder bore diameter against the wear limits (see page 7-16). |