Thermostat: Service and Repair

Engine Coolant Thermostat Replacement

Removal Procedure






1. Drain the cooling system. Refer to Cooling System Draining and Filling Service and Repair.
2. Remove the hoses from the thermostat housing cap.
3. Remove the thermostat housing cap and bolts.
4. Remove the thermostat.

Installation Procedure






1. Install the thermostat.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Install the thermostat housing cap bolts and cap.

Tighten
Tighten the bolt to 10 Nm (18 lb in).

3. Install the hoses to the thermostat housing cap.
4. Fill the cooling system. Refer to Cooling System Draining and Filling Service and Repair.