Measure piston ring end gap - AR03.10-P-7311-02VA
WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2012 Mercedes-Benz GL550, 2012 Mercedes-Benz GL450, 2011 Mercedes-Benz ML63, 2011 Mercedes-Benz ML550, and 2011 Mercedes-Benz ML350. However, it is still accessible from the selected car via links, so may be relevant.
TEST VALUES FOR PISTON RINGS
| Number | Designation | Engine 272.91/92/94 | Engine 272.96/97/98/99 | ||
|---|---|---|---|---|---|
| BE03.10-P-1002-05D | Piston ring end gap | Groove 1 | mm | 0.2 to 0.35 | 0.2 to 0.35 |
| Groove 2 | mm | 0.3...0.5 | 0.3...0.5 | ||
| Groove 3 | mm | 0.2...0.9 | 0.2...0.9 | ||
TEST VALUES FOR PISTON RINGS
| Number | Designation | Engine 273.92 | Engine 273.96 | ||
|---|---|---|---|---|---|
| BE03.10-P-1002-05D | Piston ring end gap | Groove 1 | mm | 0.2 to 0.35 | 0.2 to 0.35 |
| Groove 2 | mm | 0.3...0.5 | 0.3...0.5 | ||
| Groove 3 | mm | 0.2...0.9 | 0.2...0.9 | ||
COMMERCIALLY AVAILABLE TOOLS
| Number | Designation |
|---|---|
| WH58.30-Z-1004-12A | Feeler gauge |
- Clean cylinder wall.
- Insert both compression rings, one after the other, above the running surface in the cylinder bore, and measure the end gap with a
feeler gauge; replace the piston rings if necessary.
The end gap of the oil scraper ring cannot be measured because of its three-part design. The oil scraper ring must also be replaced when the compression rings are replaced.