27 Clean off the matrix, and carefully inspect
it for leakage or corrosion. If it is leaking,
renewal is recommended, as repairs are
seldom successful unless done
professionally.
28 Inspect the condition of the O-rings on the
pipe stubs, and renew if necessary.
29 To remove the heater motor and fan,
disconnect the motor switch wiring, undo the
three screws, and withdraw the motor and fan
from the casing (see illustration).
30 Further dismantling of the motor and fan
assembly is not possible, and if renewal is
necessary, a complete assembly will be
required.
Reassembly
31 Reassembly is the reversal of the
dismantling procedure.
13 Fresh air vent assembly -
removal and refitting
1
Removal
1 Unscrew the fresh air vent retaining collar
and lift away the binnacle (see illustrations).
2 Turn the air vent anti-clockwise and remove
it (see illustration).
Refitting
3 Refitting is the reverse sequence to
removal.
Cooling, heating and ventilation systems 3•9
3
13.1a Unscrew the fresh air vent retaining
collar . . .
13.1b . . . and lift away the binnacle 13.2 Turn the air vent anti-clockwise to
remove
12.26 Later-type heater matrix
1 Matrix endplate
2 Endplate retaining
screws
3 Pipe stub retaining screw
4 Pipe stub
5 O-ring
12.29 Later-type heater motor
1 Retaining screws
2 Heater motor
3 Switch wiring connector
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