Heater matrix - removal and refitting

Removal
1 With the heater removed from the vehicle as previously described, extract the two securing screws and slide the matrix out of the heater casing.

2 If further dismantling is necessary, cut the casing seal at the casing joint, prise off any securing clips and separate the two halves of the casing.

3 Remove the air flap valves. It should be noted that the lever for the air distribution valve can only be removed when the mark on the lever is in alignment with the one on the gearwheel (see illustration).

12.3 Air distribution valve lever and gear marks (arrowed)
12.3 Air distribution valve lever and gear marks (arrowed)

4 If the heater matrix is leaking, it is best to obtain a new or reconditioned unit. Home repairs are seldom successful. A blocked matrix can sometimes be cleared using a cold water hose and reverse flushing, but avoid the use of searching chemical cleaners.

Refitting
5 Reassembly is a reversal of removal. Take care not to damage the fins or tubes of the matrix when inserting it into the casing. Refit the heater with reference to Section 11.

    See also:

    Air conditioner refridgerant charge check (Every 12 000 miles (20 000 km) or 12 months)
    1 If applicable, remove the radiator grille being careful not to damage the condenser fins. 2 Check the refrigerant charge as follows. The engine should be cold and the ambient temperature should ...

    Washer nozzles - removal and refitting
    Windscreen and rear window washers 1 To remove a nozzle, carefully prise it from its location using a thin-bladed screwdriver. Disconnect the washer hose and withdraw the nozzle. 2 To refit, rec ...

    Boot lid lock (Saloon models) - removal and refitting
    Removal 1 With the boot lid raised, remove the lock barrel retaining clip. 2 Where applicable, disconnect the operating lever from the central locking solenoid/motor, then withdraw the lock barre ...