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REMOVAL (1) Drain cooling system below thermostat housing level. (2) Disconnect engine coolant temperature sensor. 10). INSTALLATION INSTALLATION (1) Install the replacement thermostat so that the pellet, which is encircled by a coil spring, faces the (2) Observe the recess groove in the engine cylin- der head (Fig. 11). (3) Position thermostat into this groove with arrow and air bleed hole on outer flange pointing up. (4) Install replacement gasket and thermostat housing. CAUTION: Tightening the thermostat housing unevenly or with the thermostat out of its recess (5) Tighten the housing bolts to 20 N·m (15 ft. lbs.) torque. (6) Install hoses to thermostat housing. ture sensor. (8) Be sure that the radiator draincock is tightly closed. Fill the cooling system (Refer to 7 - COOLING (9) Start and warm the engine. Check for leaks. INSTALLATION (1) Clean all gasket sealing surfaces. the coolant outlet connector surface. Position thermo- (3) Position the coolant outlet connector and gas- ket over the thermostat, making sure thermostat is (4) Position outlet connector to thermostat housing and install bolts. Tighten bolts to 28 N·m (20 ft. lbs.). (5) Install radiator hose to coolant outlet housing. Fig. 9 Thermostat Removal/Installation 1 - LONG BOLT Fig. 10 Thermostat and Coolant Outlet Connector 1 - TIMING BELT COVER TJ ENGINE 7 - 29 ENGINE COOLANT THERMOSTAT (Continued) |