Volvo C30 2007 Service And Repair Manual page 556

the screws for the intake manifold in the cylinder head
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the hose clamps at the turbocharger (TC)
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the hose clamps at the mass air flow (MAF) sensor
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the intake manifold between the air cleaner (ACL) and the turbocharger (TC)
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the hose for the EVAP canister from the intake manifold.
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FINISHING
INSTALLING COMPONENTS AND TESTING THE ENGINE COOLANT HEATER
Fig. 171: Identifying Shield And Clips
Courtesy of VOLVO CARS CORPORATION
Install:
the right-hand front wheel

the lower mounting on the nut for the exhaust system. Tighten. See: TIGHTENING TORQUE

the shield under the vehicle using the 7 clips.
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Carry out a performance test of the engine coolant heater. See: FUEL-POWERED PREHEATER,
CHECKING .
2012 Volvo C30 T-5
HVAC Climate Units - Removal, Replacement And Installation