1With the heater unit removed from the
vehicle, remove the two securing screws and
withdraw the heater matrix from the casing
(see illustrations).
2Cut 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.
3Remove 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).
4Clean all components and hose through the
matrix to remove any debris. If necessary usea chemical cleaner to clear the inner passage
of the matrix. Renew the components as
necessary.
5Reassembly is a reversal of dismantling.
Removal
1Disconnect the battery negative lead.
2Where necessary, unclip the brake servo
vacuum hose for improved access.
3On models from 1987, unclip the
windscreen washer hoses and wiring from the
motor cover, and secure them to the
bodywork out of the way.
4Unscrew the two securing bolts from the
motor cover, pull off the rubber moulding,
then withdraw the cover (see illustration).
5Disconnect the wiring from the motor, and
detach the earth lead from its bracket. 6Unscrew the two motor securing nuts, and
withdraw the motor assembly (see illustration).
7Unclip the casing halves, then prise open
the motor retaining strap using a screwdriver,
or if necessary a drift.
8Detach the wiring from the motor, then
remove the motor and fan wheels from the
casing. Refitting
9Refitting is a reversal of removal.
1Only those items which can be renewed
without discharging the system are described
here(see illustration).Other items must be
dealt with by a Ford dealer or air conditioning
specialist.
21Air conditioning system -
component renewal
20Heater motor - removal and
refitting
19Heater unit - overhaul
3•10Cooling, heating and air conditioning systems
19.1a Remove the securing screws . . .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
1 De-ice thermostat
2 Evaporator
3 Expansion valve
4 Compressor
5 Compressor clutch6 Pressure switch
7 Sight glass
8 Dehydrator/collector
9 Cooling fan
10 Condenser
21.1 Layout of air conditioning system components
20.6 Heater motor and wiring
20.4 Unscrew the securing bolts and
withdraw the heater motor cover
19.1b . . . and withdraw the heater matrix
