11 25 Pistons with Rings and Pins
WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2017 BMW 550i GT xDrive, 2017 BMW 535i GT xDrive, 2017 BMW 535i GT, 2016 BMW 550i GT xDrive, and 2016 BMW 535i GT xDrive. However, it is still accessible from the selected car via links, so may be relevant.
PISTONS WITH RINGS AND PINS SPECIFICATION
| 1st groove | ||
| End clearance | mm | 0.15... 0.30 |
| Axial play | mm | 0.020... 0.060 |
| 2nd groove | ||
| End clearance | mm | 0.30... 0.50 |
| Axial play | mm | 0.015... 0.060 |
| 3rd groove | ||
| End clearance | mm | 0.20... 0.90 |
| Axial play | mm | cannot be measured |
PISTONS WITH RINGS AND PINS SPECIFICATION
| Piston and pin are paired to each other - replace together only. | ||
| Measuring point "A" (position) | mm | 12 |
| Piston diameter at measuring point "A" | ||
| Original (new dimension) | mm | 83.98... 84.01 |
| Repair stage (new dimension) | mm | 84.06... 84.09 |
| Oversize (new dimension) | mm | 84.23... 84.26 |
| Piston installation clearance (piston new) | mm | 0.01...0.03 |
| Piston installation clearance (piston worn) | mm | 0.02...0.08 |
| Permissible total wear tolerance between piston and cylinder (engine operated) | mm | 0.15 |