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:

    Maintenance - upholstery and carpets
    Mats and carpets should be brushed or vacuum cleaned regularly to keep them free of grit. If they are badly stained remove them from the vehicle for scrubbing or sponging and make quite sure they ...

    Underbonnet lamp - removal, refitting and bulb renewal
    1 Disconnect the battery negative lead. Removal and refitting 2 Detach the wiring connector at the left-hand bonnet hinge, and attach a length of string to the end of the wire running from the lam ...

    Rear axle tube (Van models) - removal and refitting
    Removal 1 Raise the rear of the vehicle and support it on stands (see “Jacking and Vehicle Support”). Remove the rear roadwheels. 2 Support the axle tube on a jack preferably of trolley type. 3 ...