Saab SONETT III Service Manual page 146

8. Lift out the heat exchanger.
REMOVAL OF HEAT EXCHANGER
Reinstall in the reverse sequence.
Joints between the fan casing, heater box and cover must
be sealed thoroughly with a suitable sealing compound, e.g.
Ribbonseal EC 2185, which is manufactured by the 3-M
Company.
Note the seal around the heat exchanger.
Ful up with coolant and check that there is no leakage
at the connections.
Removal of heating system thermostat valve
The cock with valve is located inside the passenger com-
partment on the left side of the dash panel.
LOCATION OF THE RMOSTAT VALVE
1. Drain off the coolant.
2. Disconnect the hoses from the heater cock.
3. Remove the distributor casing for the outlet to the
defroster hoses.
4. Disconnect the thermostat coil under the heat exchanger
and remove the rubber bush ing.
REMOVAL OF DISTRIBUTOR CASING TO FACILITATE
DISCONNECTION OF THE THERMOSTAT COIL
5. Detach the control wire from the heater cock.
6. Fold the cowl plate trim aside and detach the heater
cock from the cowl plate. Remove the heater cock.
Reinstall in the reverse sequence.
Ful up with coolant and check that there is no leakage
at the connections.
V, '
Nov. 1972
SAAB
941-3