Pic. 2.110. Measuring the gap between the compression ring and the groove
Check up a backlash between a compression ring and a flute, having measured its flat probe, as is shown in drawing 2.110.
Standard Clearance:
- compression ring No. 1 - 0.020–0.070 mm;
- compression ring No. 2 - 0.020–0.060 mm;
- oil scraper ring:
- 1AZ-FE - 0.070–0.150 mm;
- 2AZ-FE - 0.070–0.150 mm.
Note. For the oil scraper ring, the clearance is determined by the scrapers. If the clearance is more than acceptable, replace the piston.