Tightening diagram of crankshaft bearing caps - AR03.20-P-4351-02VA
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CRANKSHAFT BEARING CAP
| Number | Designation | Engine 272 | |||
|---|---|---|---|---|---|
| BA03.20-P-1001-01D | Screw of crankshaft bearing cap | M8 | 1st stage | Nm | 20 |
| 2nd stage | ∠ ° | 90 | |||
| BA03.20-P-1002-01D | Side bolt for crankshaft bearing cap | M8 | Nm | 30 | |
| BA03.20-P-1003-01D | Bolt for crankshaft bearing cap | M10 | 1st stage | Nm | 5 |
| 2nd stage | Nm | 30 | |||
| Step 3 | ∠ ° | 90 | |||
Tightening sequence for the crankshaft bearing cap and the crankshaft fitted bearing cap
Tighten the crankshaft bearing cap (2, 3, 4) and the crankshaft fitted bearing cap (1) individually in the numerical sequence. Arrow identifies direction of travel.
- Oil bolts of bearing cap on thread and bolt head contact surfaces.
- Fully tighten bolts on bearing cap in the specified sequence.
If no angle tightener is available at the end tightening point, tighten bolts further by the specified angle in a single operation using a wrench and tommy bar. Do not use a flexi-rod torque wrench for tightening in order to avoid any angle errors.
- Tighten bolts:
- Tighten bolt 1 (M10) with the 1st stage.
- Tighten bolt 2 (M10) with the 1st stage.
- Tighten bolt 3 (M8) with the 1st stage.
- Tighten bolt 4 (M8) with the 1st stage.
- Tighten bolt (5) (end tightening point).
- Tighten bolt (6) (end tightening point).
- Tighten bolt 1 (M10) with the 2nd stage.
- Tighten bolt 2 (M10) with the 2nd stage.
- Tighten bolt 3 (M8) with the 2nd stage rotation angle (end tightening point).
- Tighten bolt 4 (M8) with the 2nd stage rotation angle (end tightening point).
- Tighten bolt 1 (M10) with the 3rd stage rotation angle (end tightening point).
- Tighten bolt 2 (M10) with the 3rd stage rotation angle (end tightening point).
Tightening sequence for the crankshaft bearing bolts and the crankshaft fitted bearing cap