Engine Block Heater: Service and Repair

REMOVAL
1. Disconnect negative battery cable from battery.
2. Drain coolant from radiator and cylinder block.





Fig. 68

3. Remove power cord from block heater (Fig. 68).
4. Loosen screw at center of block heater. Remove heater assembly.


INSTALLATION
1. Thoroughly clean cylinder block core hole and block heater seat.
2. (all except 4.7L Engine). Insert block heater assembly with element loop pointing down.





Fig. 69

3. 4.7L Engine Only, Insert block heater assembly with element loop pointing upward (12 o'clock) (Fig.69).
4. With block heater fully seated, tighten center screw to 2 Nm (17 in. lbs.) torque.
5. Fill cooling system with recommended coolant.
6. Start and warm the engine. Check for leaks.