- Fasten the fan assembly to the independent heater casing tightening the fixing bolts.- Place the water pump in the correct fitting position.- Fit the flexible pipe on the pump and secure it using the retaining band.- Fasten the water pump to the independent heater casing tightening the bolt fixing the pump retaining band.- Connect the electrical connectors and secure the protective cover.- Fasten the air inlet pipe to the heater using the retaining bands. Op. 5020M10 INDEPENDENT HEATER UNIT - R R- Connect the negative battery terminal. Op. 0010T20 COOLANT CHECK DENSITY AND TOP UP IF NECESSARY