11 21 Crankshaft and Bearings N20/N26 B20
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MAIN BEARING JOURNAL NUMBER (1) SPECIFICATION
| Grinding stage of main bearing journals | Main bearing journal number 1 | |
| Original (identification mark S/1) | mm | 49.984... 49.978 |
| Original (identification mark S/2) | mm | 49.977... 49.972 |
| Original (identification mark S/3) | mm | 49.971... 49.980 |
| Crankshaft bearing clearance, radial | mm | 0.020... 0.046 |
| Max. permitted runout at main bearing journal | mm | 0.15 |
MAIN BEARING JOURNAL NUMBER (2, 3, 4, 5) SPECIFICATION
| Grinding stage of main bearing journals | Main bearing journal number 2,3,4,5 | |
| Original (identification mark S/1) | mm | 49.999... 49.993 |
| Original (identification mark S/2) | mm | 49.992... 49.987 |
| Original (identification mark S/3) | mm | 49.986... 49.980 |
| Crankshaft bearing clearance, radial | mm | 0.020... 0.046 |
| Max. permitted runout at main bearing journal | mm | 0.15 |
CRANKSHAFT GUIDE BEARING SPECIFICATION
| Grinding stages, crankshaft guide bearing | ||
| Original | mm | 24.020... 24.053 |
| Level 1 | mm | No machining possible |
| Level 2 | mm | No machining possible |
| Crankshaft side clearance | mm | 0.060... 0.250 |
| Coefficient of friction of crankshaft | Nm | 2 to 2.5 |
CONNECTING ROD BEARING JOURNALS SPECIFICATION
| Grinding stages connecting rod bearing journals | ||
| Identification mark (b) | mm | 49.9730...49.9834 |
| Identification mark (R) | mm | 49.9835...49.9930 |
| Level 1 | mm | No machining possible |
| Level 2 | mm | No machining possible |
| Radial connecting-rod bearing play | mm | 0.025... 0.071 |