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REMOVAL 1. Remove the air cleaner housing. (Refer to 9 - ENGINE/AIR INTAKE SYSTEM/AIR CLEANER HOUSING - REMOVAL). 2. Partially drain the cooling system. (Refer to 7 - COOLING/ENGINE/COOLANT - STANDARD PROCEDURE). 3. Disconnect the upper radiator hose. Note: The thermostat housing and the thermostat are serviced as an assembly. The thermostat cannot be 4. Remove the thermostat housing retaining bolts and remove the thermostat and housing from the engine. INSTALLATION 1. Install the thermostat housing with a new O-ring. Tighten the bolts to 10 N·m (89 in. lbs.). 2. Connect the upper radiator hose. 3. Fill the cooling system. (Refer to 7 - COOLING/ENGINE/COOLANT - STANDARD PROCEDURE). 4. Start the engine and check for coolant leaks. 5. Recheck the coolant level and adjust as necessary. ZH ENGINE 7 - 27 |