Saab 900 Service Manual page 33

Heating and ventilation system, air conditioning system 854-21
To change the air filter 1979-1982 mo-
dels
Undo the four retaining screws and withdraw the
filter. Fit
a
new filter. Change the filter every
18 000 miles (30 000 km).
Caution
Avoid touching the filter element
The filter element contains glass fibres
which can cause skin irritation.
WEAR PROTECTIVE GLOVES WHEN HANDL-
ING THE FILTER.
1983 models onwards: The cover is incorporated
in the filter casing and secured by four plastic
clips. To remove the cover, turn the clips a 1J4
turn clockwise or anti-clockwise.
To refit, reverse the removal procedure.
To change the heat exchanger and temp-
eraturtt control valve, 1979 models
Remove the heat exchanger and valve from the
car as one unit.
1 Remove the cover under the switches on the
steering column
2 Certain cars have a front centre console
which must be removed (see section 853
"Interior equipment").
':to
i.
Saab 900