Thermostat: Service and Repair

WARNING: Do not remove pressure cap with the system hot and under pressure. Serious burns from coolant can occur.

REMOVAL
1. With a suitable container placed below draincock, drain engine coolant below level of thermostat.
2. Remove thermostat housing bolts, then the housing.
3. Remove thermostat and gasket, then discard gasket and clean mating surfaces.

NOTE: The thermostat is in a water box, formed in the drive belt side of the intake manifold.

INSTALLATION
Place a new gasket (dipped in water) on the water box surface, center thermostat into opening in the intake manifold. Place housing over gasket and thermostat, making sure thermostat is in recess provided. Bolt housing to intake manifold, tighten bolts to 28 Nm (250 in.lbs.). Refill cooling system. See Cooling System/Service and Repair.
Service and Repair