26, Exhaust, Secondary Air
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Tightening sequence for exhaust manifold on naturally aspirated engine, cylinders 1 to 4
| 1 to 12 | applies to both sides, always start at the timing-case cover |
Fig 2: Exhaust Manifold Seal And Mount On Naturally Aspirated Engine, Cylinders 1 To 4 Components Location With Torque Specification
Exhaust manifold seal and mount on naturally aspirated engine, cylinders 1 to 4
| 1 | Exhaust manifold |
| 2 | Exhaust manifold seal |
| 3 | Studs M8; |
| 5 | Hexagon nut, M8: replace: (check nuts by clicking once): observe correct tightening sequence > Tightening torque 27 (20 ftlb.) (check nuts by clicking once) Nm |
| A | M6 screw: heat shield to exhaust manifold: > Tightening torque 10 Nm (7.5 ftlb.) |
Fig 3: Exhaust Manifold Seal And Mount On Naturally Aspirated Engine, Cylinders 5 To 8 Components Location With Torque Specification
Exhaust manifold seal and mount on naturally aspirated engine, cylinders 5 to 8
| 1 | Exhaust manifold |
| 2 | Seal |
| 3 | Hexagon nut, M8: replace: (check nuts by clicking once): observe correct tightening sequence > Tightening torque 27 (20 ftlb.) (check nuts by clicking once) Nm |
| 4 | M6 screw: heat shield to exhaust manifold: > Tightening torque 10 Nm (7.5 ftlb.) |
Secondary-air pump with mounting
| 1 | Bracket |
| 2 | Secondary-air pump |
| 3 | Screw. M6: always use new aluminium screws > Initial tightening 4 Nm (3 ftlb.) and > Final tightening 90° |
| 4 | Screw element. M6: always use new aluminium screws > Initial tightening 4 Nm (3 ftlb.) and > Final tightening 90° |