Thermostat: Service and Repair

Thermostat Replacement (LH2)
Removal Procedure





1. Drain the cooling system. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (GE 47719) .
2. Remove the air cleaner outlet duct.
3. Remove the radiator hose from the thermostat housing.
4. Remove the heater hose from the thermostat housing.
5. Remove the thermostat housing bolts.
6. Remove the thermostat housing (1) with thermostat (3), from the water housing.
7. Remove and discard the seal ring (2).
8. Remove the thermostat from the thermostat housing.

Installation Procedure





1. Clean the thermostat housing and water housing sealing surfaces.
2. Install the new thermostat to the thermostat housing.
3. Install the NEW seal (2) to the thermostat housing.
4. Install the thermostat housing (1) with the thermostat (3) and the seal (2) to the water housing.

5. Notice: Refer to Fastener Notice in Service Precautions.

Install the thermostat housing bolts.
^ Tighten the thermostat housing bolts to 10 Nm (89 inch lbs.).
6. Install the heater hose to the thermostat housing.
7. Install the radiator hose to the thermostat housing.
8. Install the air cleaner outlet duct.
9. Fill the cooling system. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (GE 47719) .