Frontier 2WD L4-2.5L (QR25DE) (2005)
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After checking the maximum valve lift amount, lower the water temperature and check the valve closing temperature.
Standard
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If out of the standard, replace thermostat.
INSTALLATION
Installation is in the reverse order of removal.
Thermostat
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Install thermostat with making rubber ring groove fit to thermostat flange with the whole circumference.
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Install thermostat with jiggle valve facing upwards. (The position deviation may be within the range of 20° as shown.)
INSPECTION AFTER INSTALLATION
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Check for leaks of engine coolant. Refer to System Check.
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Start and warm up the engine. Visually check if there is no leaks of engine coolant.