11 25 Pistons with Rings and Pins N52T B25
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
PISTON AND PIN SPECIFICATION
| Piston and pin are paired to each other - replace together only. | ||
| Measuring point "A" (position) | mm | 10 |
| Piston diameter at measuring point "A" | ||
| Original (new dimension) | mm | 81.985±0.014 |
| Repair stage (new dimension) | mm | % |
| Oversize (new dimension) | mm | 82.235±0.014 |
| Piston installation clearance (piston new) | mm | 0.000... 0.043 |
| Piston installation clearance (piston worn) | mm | 0.020... 0.047 |
| Permissible total wear tolerance between piston and cylinder (engine operated) | mm | 0.150 |
PISTON WITH RINGS SPECIFICATION
| 1st groove | ||
| End clearance | mm | 0.150... 0.280 |
| Axial play | mm | 0.030... 0.070 |
| 2nd groove | ||
| End clearance | mm | 0.300... 0.500 |
| Axial play | mm | 0.020... 0.060 |
| 3rd groove | ||
| End clearance | mm | cannot be measured |
| Axial play | mm | cannot be measured |