1125 Pistons with Rings and Pins (N55)
PISTON RING SPECIFICATIONS
| 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 |
PISTON INSTALLATION CLEARANCE 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 |