Saab 900 Service Manual page 37

Heating and ventilation system, air conditioning system 854-25
5 Release the control rod from the valve.
6 Fit the O-rings to a new valve and secure
them in position with a dab of gasket com-
pound.
7 Fit the valve. Fit the control rod when the
temperature control is in the shut-off posi-
tion and the flat surface on the plastic stem
of the valve points upwards (valve closed).
·N.B. The mounting holes in a new valve are
not tapped. The screws are thread- forming
(self-tapping) .
1 Control for the temperature control valve
2 Temperature control valve
8 Connect the coolant hoses in the engine
compartment to the valve.
9 Top-up with coolant, and pressure-test and
vent the system. Check it for tightness.
10 Fit the defroster grille and the bottom sec-
tion of the facia.
1
3
2
4
S 8 006
To change the drive pin on the tempera-
ture control valve
1 Remove the valve.
2 Remove the drive pin from the valve by
means of a grinder or by drilling out the
rivets.
Water hose connections
1 To the engine coolant pump
2 From the coolant distribution pipe, connected to
the engine block
3 Upper connection branch on the temperature con-
trol valve
4 Lower connection branch on the temperature con-
trol valve
Saab900