S90 L6-2.9L VIN 96 B6304S (1998)
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Tighten manifolds to cylinder head.
Tighten to: 25 Nm (18 ft. lbs.).
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Mount lifting lug on studs between 3rd and 4th exhaust branches.
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Use joint sealing compound part No. 1 161035-9, or equivalent.
5. Install heat shield
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Bolt shield to rear manifold.
Tighten to: 15 Nm (11 ft. lbs.).
6. Install front exhaust pipe
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Tighten bolted joints with manifolds.
Tighten to: 60 Nm (44 ft. lbs.) (10 mm) or 40 Nm (30 ft. lbs.) (8 mm).
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Use thread locking compound.
NOTE:
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Undo bolted joint after catalytic converter and retighten to 25 Nm (18 ft. lbs.).
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This is necessary to prevent stresses in the system.
7. Check operation
Start engine.
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Inspect for leaks