SAAB 9000. Manual - part 22
3•10 Cooling, heating and ventilation systems
9.29a Unscrew the motor mounting
screw...
illustrations). Note how the two halves fit
together, to facilitate reassembly.
29 Unscrew the motor mounting screw, lift
the lead cover and remove the motor from the
housing (see illustrations).
Refitting
30 Refitting is a reversal of the removal
procedure, but when refitting the false
bulkhead panel, take care not to pull the wiring
from the radiator fan control unit. When
refitting the plastic drainage moulding, make
sure that it locates under the windscreen
moulding lower lip.
Heater matrix
Removal
31 Follow the procedure for removing the
heater blower motor as previously described.
32 If not already done, drain the cooling
system with reference to Chapter 1.
33 If not already done, loosen the clips and
disconnect the hoses from the matrix.
34 Support the evaporator housing as high as
possible, then withdraw the heater matrix from
the heater housing (see illustration). If
necessary, the inlet and outlet stubs can be
removed from the matrix, after removing the
special clips. Recover the O-rings.
35 Examine the O-rings, and if necessary
renew them.
Refitting
36 Refitting is a reversal of removal. After
reconnecting the hoses and before refitting the
9.29b . . . lift the lead cover...
remaining components, refill the cooling
system and check for leaks.
Heater box
Removal
37 Remove the heater blower motor and the
matrix as described previously in this Section.
38 Remove the facia panel assembly as
described in Chapter 11.
39 Remove the panel vents, air ducts, and the
left-hand defroster vent, then disconnect the
right-hand defroster vent.
40 Remove the air duct for the rear seat
passengers from the heater box.
41 Disconnect the wiring for the servo motor
and heater blower motor from the heater box.
42 Unscrew the heater box mounting bolts.
43 Unclip the wiring loom in the engine
compartment, and pull the rubber grommet to
one side.
44 Withdraw the heater box diagonally
upwards. Note that the bottom of the heater
box locates in a groove on the bulkhead and
facia panel assembly.
Refitting
45 Refitting is a reversal of removal.
Heater control panel (except
ACC models)
Removal
46 Remove the glovebox with reference to
Chapter 11. Also remove the panel beneath
the glovebox.
47 Reach up behind the heater control panel,
H 28531
9.34 Removing the heater matrix from the
heater housing
9.57 Heater temperature control cable
refitting dimension
9.29c ... and remove the motor from the
housing
and release the four clips. Pull out the panel.
48 Disconnect the air distribution valve link
rod, the bevel gear for the temperature control
valve, and all connectors.
Refitting
49 Refitting is a reversal of removal, but note
the following points:
a) When refitting the bevel gear for the
temperature control valve, make sure that
the valve In the engine compartment (as
well as the control knob) is set to COLD.
b) When refitting the link rod, turn the pinion
spindle anti-clockwise as far as possible,
then set the air distribution control to
position "O". Reconnect the link rod so
that the orange part is towards the spindle
on the control panel.
c) Check the operation of the heater controls
on completion.
Heater temperature control cable
Removal
50 Remove the glovebox as described in
Chapter 11. Also remove the panel from under
the glovebox.
51 Remove the speaker grilles, then unscrew
the screws from the top of the facia panel by
prising up the front edge, and pulling it
forwards so that the clip is released from the
rear edge.
52 Unscrew the screws and lower the power
distribution panel, then remove the side vent
and defroster air ducts.
53 Reach up behind the heater control panel
and release the clips. Pull the panel forwards.
54 Disconnect the air distribution valve link
rod, and disconnect the bevel gear for the
temperature control cable from the control
panel.
55 Disconnect the inner control cable from
the temperature valve in the engine
compartment.
56 Release the clip securing the cable to the
heater box, and remove the cable.
Refitting
57 Refitting is a reversal of removal, but note
the following points:
a) When reconnecting the cable to the valve
in the engine compartment, position the
outer cable as shown (see illustration).