Heater unit - overhaul

1 With the heater unit removed from the vehicle, remove the two securing screws and withdraw the heater matrix from the casing (see illustrations).

19.1a Remove the securing screws . . .
19.1a Remove the securing screws . . .

19.1b . . . and withdraw the heater matrix
19.1b . . . and withdraw the heater matrix

2 Cut the heater casing gasket in line with the casing joint, then use two suitable screwdrivers to prise off the retaining clips and separate the casing halves. Withdraw the lower part of the casing to the side.

3 Remove the air flap valves, then press the control levers from the casing. Note that the “up/down” control lever can only be removed when the marks are aligned as shown (see illustration).

19.3 Heater “up/down” control lever must be aligned as shown before removal
19.3 Heater “up/down” control lever must be aligned as shown before removal Note that the cross marks are for right-hand drive vehicles

4 Clean all components and hose through the matrix to remove any debris. If necessary use a chemical cleaner to clear the inner passage of the matrix. Renew the components as necessary.

5 Reassembly is a reversal of dismantling.

    See also:

    Power steering pump - removal and refitting
    Note: New power steering fluid hose O-rings will be required when refitting. All engines except 1.8 litre (R6A) CVH and 2.0 litre DOHC 1 Place a suitable container under the power steering pump, ...

    Front brake caliper - removal, overhaul and refitting
    Warning: Hydraulic fluid is poisonous; wash off immediately and thoroughly in the case of skin contact, and seek immediate medical advice if any fluid is swallowed or gets into the eyes. Certain ...

    Alternator - testing
    Note: To carry out the complete test procedure use only the following test equipment - a 0 to 20 volt moving coil voltmeter, a 0 to 100 amp moving coil ammeter, and a rheostat rated at 30 amps. 1 ...