Thermostat - Daewoo CIELO EURO III Manual

DAEWOO T-154 BL2,3

THERMOSTAT

Single Overhead Cam Engine
Removal Procedure
Caution: To prevent personal injury, do not remove
the surge tank cap while the engine and the radiator
are hot because the heat causes the system to re-
main under pressure. Scalding fluid and steam may
be blown out under pressure.
1. Drain the coolant. Refer to "Draining and Refilling
the Cooling System" in this section.
2. Remove the rear timing belt cover. Refer to Section
1B, SOHC Engine Mechanical.
3. Loosen the hose clamp on the upper radiator hose
at the thermostat housing.
4. Disconnect the upper radiator hose from the ther-
A102D002 mostat housing.
5. Remove the mounting bolts that hold the thermostat
housing to the cylinder head.
6. Remove the thermostat housing from the head.
7. Remove the thermostat from its recess in the cylin-
der head.
8. Inspect the valve seat for foreign matter that could
prevent the valve from seating properly.
9. Inspect the thermostat for proper operation. Refer to
"Thermostat Test" in this section.
10. Clean the thermostat housing and the cylinder head
mating surfaces.
A102D014
Installation Procedure
1. Install the thermostat into the cylinder head recess.
2. Install the thermostat housing.
3. Secure the thermostat housing to the cylinder head
with the mounting bolts.
Tighten
Tighten the thermostat housing mounting bolts to 20
N m (15 lb-ft).
4. Connect the upper radiator hose to the thermostat
housing.
5. Secure the upper radiator hose to the thermostat
housing with a hose clamp.
6. Install the rear timing belt cover. Refer to Section
1B, SOHC Engine Mechanical.
7. Refill the engine cooling system. Refer to "Draining
and Refilling the Cooling System" in this section.
A102D040
ENGINE COOLING 1D – 9