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Home >> Jeep >> 2006 >> Commander 2WD V8-4.7L VIN N >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Cylinder Block Assembly >> Engine Block Heater >> Service and Repair
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Engine Block Heater: Service and Repair

HEATER-ENGINE BLOCK

REMOVAL
4.7L





1. Disconnect negative battery cable from battery.
2. Drain coolant from radiator.
3. Raise vehicle.
4. Remove engine cylinder block drain plug(s) located on the sides of cylinder block above the oil pan rail.





5. Remove power cord from block heater.
6. Loosen screw at center of block heater. Remove heater assembly.

INSTALLATION





1. Thoroughly clean cylinder block core hole and block heater seat.
2. Insert block heater assembly with element loop pointing at twelve o'clock.
3. With block heater fully seated, tighten center screw to 2 Nm (17 inch lbs.) torque.
4. Refill cooling system.
5. Start and warm the engine. Check for leaks.
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