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 . . .
19.1b . . . 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
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:
Spark plugs and HT leads - removal, inspection and refitting
Note: The correct functioning of the spark plugs
is vital for the correct running and efficiency of
the engine. It is essential that the plugs fitted are
appropriate for the engine, and the suitabl ...
Oil pump - dismantling, inspection and reassembly
Note: A new pressure relief valve plug and
pick-up tube gasket will be required for
reassembly.
Dismantling
1 If oil pump wear is suspected, check the
cost and availability of new parts and the c ...
Thermo-viscous cooling fan (SOHC models) - removal and refitting
Removal
1 Disconnect the battery negative lead.
2 Remove the four retaining clips and
unscrew the two retaining screws, then
withdraw the upper section of the fan shroud
(see illustrations).
1 ...