General Overview
Information
- The tightening steps in the tightening sequences relate to tightening screws uniformly, i.e. all affected screws must first be tightened uniformly to the first torque value, then all screws are tightened one stage further, and so on.
- Replace all O-rings following removal!
Information
- A differentiation between the all-wheel engine and the rear-wheel drive engine is identified by the terms 4WD and 2WD.
The torques in the table below generally apply to screws that are not specifically listed =>
The bolt quality is indicated on the screw head at the top as a decimal number, e.g. "8.8" or "12.9".
| Bolt quality 8.8 | Bolt quality 10.9 | Bolt quality 12.9 | |||
|---|---|---|---|---|---|
| Thread | [Nm (ftlb.)] | Thread | [Nm (ftlb.)] | Thread | [Nm (ftlb.)] |
| M4 | 3 (2 ftlb.) | M4 | 4 (3 ftlb.) | M4 | 5 (3.5 ftlb.) |
| M5 | 6 (4.5 ftlb.) | M5 | 8 (6 ftlb.) | M5 | 10 (7.5 ftlb.) |
| M6 | 10 (7.5 ftlb.) | M6 | 13 (9.5 ftlb.) | M6 | 16 (12 ftlb.) |
| M8 | 23 (17 ftlb.) | M8 | 33 (24 ftlb.) | M8 | 39 (29 ftlb.) |
| M10 | 45 (33 ftlb.) | M10 | 65 (48 ftlb.) | M10 | 80 (59 ftlb.) |
| M10 x 1.25 | 50 (37 ftlb.) | M10 x 1.25 | 70 (52 ftlb.) | M10 x 1.25 | 85 (63 ftlb.) |
| M12 | 80 (59 ftlb.) | M12 | 115 (85 ftlb.) | M12 | 135 (100 ftlb.) |
| M12 x 1.25 | 90 (67 ftlb.) | M12 x 1.25 | 125 (93 ftlb.) | M12 x 1.25 | 150 (111 ftlb.) |
| M12 x 1.5 | 85 (63 ftlb.) | M12 x 1.5 | 120 (89 ftlb.) | M12 x 1.5 | 145 (107 ftlb.) |
| M14 | 130 (96 ftlb.) | M14 | 180 (133 ftlb.) | M14 | 220 (163 ftlb.) |
| M16 | 200 (148 ftlb.) | M16 | 280 (207 ftlb.) | M16 | 335 (248 ftlb.) |
ALUMINUM SCREWS TIGHTENING PROCEDURE
| Thread | Strength | Tightening procedure |
|---|---|---|
| M6 | AL9 | → Initial tightening: 4 Nm (3 ftlb.) and → Final tightening: 90° or yield-point wrench. |
| M8 | AL9 | → Initial tightening: 10 Nm (7.5 ftlb.) and → Final tightening: 90° or yield-point wrench. |
| M10 | AL9 | → Initial tightening: 20 Nm (15 ftlb.) and → Final tightening: 90° or yield-point wrench. |