11 25 PISTON WITH RINGS AND BOLTS (540i 2017-2020, 540i xDrive 2017-2020)
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1125 TECHNICAL DATA OVERVIEW
| End clearance of center piston ring | |
| Before measuring the end clearance, make sure the cylinder is within the permissible tolerance. | 0.30 mm... 0.45 mm |
| End clearance of upper piston ring | |
| Before measuring the end clearance, make sure the cylinder is within the permissible tolerance. | 0.15 mm... 0.25 mm |
| I End clearance of upper piston ring | |
| Before measuring the end clearance, make sure the cylinder is within the permissible tolerance. | 0.15 mm... 0.30 mm |
| I Side clearance of center piston ring | |
| Clean all components before measuring the side clearance. | 0.07 mm... 0.11 mm |
| Side clearance of upper piston ring | |
| Clean all components before measuring the side clearance. | 0.07 mm... 0.11 mm |