Fiat Uno Manual

Heater unit - removal and refitting
Cooling and heating systems / Heater unit - removal and refitting


1 Drain the cooling system.

2 Disconnect the heater hoses at the engine compartment rear bulkhead.

3 Working within the car under the facia panel, disconnect the leads from the heater blower by pulling the connecting plug apart.

4 If a radio is fitted, disconnect the aerial, earth, speaker and power leads from it.

5 Pull off the knobs from the control levers (photo).

12.5 Pulling off heater control lever knob
12.5 Pulling off heater control lever knob

6 Extract the screws and take off the control indicator plate (photos). Disconnect the leads from the cigar lighter and carefully detach the fibre optic which provides the panel illumination.

12.6A Heater control panel screw
12.6A Heater control panel screw

12.6B Removing heater control panel escutcheon
12.6B Removing heater control panel escutcheon

7 Unscrew and remove the screws which hold the console to the heater unit and withdraw the console.

8 The control cables can be disconnected from the arms of the control flap valves (photos).

12.8A Heater coolant valve and control cable
12.8A Heater coolant valve and control cable

12.8B Heater flap valve cables
12.8B Heater flap valve cables

9 Unscrew the single screw from the upper face of the facia panel. This screw secures the upper part of the heater casing (photo).

12.9 Heater upper fixing screw
12.9 Heater upper fixing screw

10 Unscrew the mounting nuts which hold the heater to the bulkhead (photo).

12.10 Heater lower mounting bolt
12.10 Heater lower mounting bolt

11 Lower the heater to the floor, taking care not to allow coolant to spill on the carpet.

12 Refitting is a reversal of removal. Fill the cooling system.

Fig. 2.8 Extracting heater upper fixing screw (Sec 12)
Fig. 2.8 Extracting heater upper fixing screw (Sec 12)


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