Volvo C30 2007 Service And Repair Manual page 557

FUEL FIRED BOOSTER HEATER WATER-IN-FUEL SENSOR (B5244S4)
NOTE: The illustrations in this service information are used for different model years
and/or models. Some variation may occur. However, the essential information in
the illustrations is always correct.
PREPARATORY WORK
REMOVING COMPONENTS
Fig. 172: Identifying Screws For Cover Over Fan Housing
Courtesy of VOLVO CARS CORPORATION
Remove:
the engine coolant heater. See: FUEL FIRED BOOSTER HEATER (B5254T3, B5254T7) or FUEL

FIRED BOOSTER HEATER (B5244S4)
the combustion preheater module (CPM). See: FUEL FIRED BOOSTER HEATER CONTROL UNIT

(B5254T3, B5254T7) or FUEL FIRED BOOSTER HEATER CONTROL UNIT (B5244S4)
the cover and the pipe couplings. See COOLANT PIPE FUEL-POWERED PREHEATER (B5254T3,

B5254T7) or COOLANT PIPE FUEL-POWERED PREHEATER (B5244S4)
the cover for the fan motor. It is secured using 4 screws

2012 Volvo C30 T-5
HVAC Climate Units - Removal, Replacement And Installation