Replacing intake manifold: Install:

Fig 1: Identifying Intake Manifold And Mounting Surface

Courtesy of VOLVO CARS OF NORTH AMERICA.

a new gasket held in position by the lower intake manifold screws. Do not forget the clamp on the fourth socket turbocharged engines.)
intake manifold. (Do not forget the crankcase ventilation hose which comes up through the gap on the 2nd and 3rd ducts on the S engines.)
the three upper screws and tighten all the screws from the middle to 20 Nm .

Fig 1: Underhood View

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Attaching Hardware

Courtesy of VOLVO CARS OF NORTH AMERICA.