Frontier 2WD L4-2.4L (KA24DE) (1998)
Thermostat: Service and Repair
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Be careful not to spill coolant over engine
REMOVAL
1. Drain coolant from engine.
2. Remove air cleaner and air duct assembly.
3. Remove water hose from water inlet housing.
4. Remove water inlet housing, then take out thermostat.
INSPECTION
1. Check valve seating condition at normal room temperature. It should seat tightly.
2. Check valve opening temperature and valve lift.
3. Then check if valve closes at 5° C (9° F) below valve opening temperature.
INSTALLATION
1. Use a scraper to remove old liquid gasket from water inlet.
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Also remove traces of liquid gasket from mating surface of front cover.
2. Apply a continuous bead of liquid gasket to mating surface of water inlet.
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Use Genuine RTV Silicone Sealant Part No. 999 MP-A7007, Three Bond TB1207D or equivalent.