Volvo C30 2007 Service And Repair Manual page 566

Fig. 179: Identifying Intake Hose, Exhaust System, Fuel Pipe And Mounting Screw
Courtesy of VOLVO CARS CORPORATION
Disconnect the intake hose (1).
Disconnect the exhaust system (2) but do not remove it. See FUEL FIRED BOOSTER HEATER EXHAUST
PIPE (B5244S4).
Remove:
the fuel pipe (3) from the clip mounting

the mounting screw (4). Angle the engine coolant heater out slightly.

Place paper around the upper fuel connection on the engine coolant heater.
Disconnect the fuel hose.
HINT: Use: see 9512619 to release the clamps.
Lift up and remove the fuel line.
INSTALLING THE FRONT FUEL LINE
2012 Volvo C30 T-5
HVAC Climate Units - Removal, Replacement And Installation