Remove parts at the engine's trailing edge

WARNING: This page is about a different variant/trim than selected.

Fig 1: Identifying Charge Air Pipe Sealed With Paper Wipe

Courtesy of VOLVO CARS OF NORTH AMERICA.

Remove

air filter housing with hoses.
camshaft sensor with trigger wheel.
torque arm with bracket.
the spark plugs.
NOTE: Make sure that no impurities can fall down in the combustion compartment.