S80 L6-2.9L VIN 92 B6294S2 (2004)
Remove the heat deflector plate over the manifold.
Note! Clean and spray the exposed threads using rustproofing agent before beginning removal.
Remove the manifold mounting nuts on the engine.
Pull off and lift up the manifold.
Cleaning
Remove the gaskets.
Clean the gasket faces thoroughly. Use a razor blade or a gasket scraper.
Check that all the studs are tightened in the cylinder head. Tighten to 20 Nm.
Installing the manifold
Note! for tightening torques, see: Tightening torque See: Specifications/Mechanical Specifications/Tightening Torque.
Note! To ensure that there is no exhaust leakage, see: Flanged joint, assembling See: Exhaust System/Exhaust Pipe/Service and Repair.
Installing the manifold
Install new gaskets.
Lubricate the threads on the studs and heated oxygen sensors (HO2S) before installation. Use paste 116 1408.
Install
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the manifold. Use new nuts. Tighten to 25 Nm
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the heat deflector plate
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the heated oxygen sensors (HO2S). Tighten to 45 Nm.
Connect the heated oxygen sensor (HO2S) connectors.
Installing the exhaust system