Engine Block Heater: Service and Repair

REMOVAL
1. Drain coolant from radiator and cylinder block. Refer to Cooling System Drain, Clean, Flush and Refill for procedure.
2. Detach power cord plug from heater.
3. Loosen screw in center of heater. Remove heater assembly.

INSTALLATION





Fig. 43

1. Thoroughly clean core hole and heater seat (Fig. 43).
2. Insert heater assembly with electrical connector position at the top of the core hole.
3. With heater seated, tighten center screw securely to assure a positive seal.
4. Fill cooling system with coolant to the proper level, vent air, and inspect for leaks. Pressurize system with Radiator Pressure Tool before looking for leaks.
The power cord must be secured in its retainer clips, and not positioned so it could contact linkages or exhaust manifolds and become damaged.