Engine Block Heater: Service and Repair

REMOVAL

WARNING: DO NOT REMOVE THE CYLINDER BLOCK DRAIN PLUGS OR LOOSEN THE RADIATOR DRAINCOCK WITH THE SYSTEM HOT AND PRESSURIZED. SERIOUS BURNS FROM THE COOLANT CAN OCCUR.

DO NOT WASTE reusable coolant. If solution is clean, drain coolant into a clean container for reuse.
1. Drain coolant (Refer to COOLING SYSTEM; SERVICE AND REPAIR STANDARD PROCEDURE).
2. Unplug power cord from block heater.








3. Loosen screw in center of block heater (Fig. 4) or (Fig. 5).
4. Remove block heater from cylinder block.

INSTALLATION
1. Thoroughly clean the engine core hole and the block heater seat.








2. Insert block heater assembly into core hole with element loop pointing Up (Fig. 6) or (Fig. 7).
3. Seat block heater flush against block face. Tighten mounting screw to 4 Nm (31 in. lbs.) torque.
4. Fill cooling system (Refer to COOLING SYSTEM; SERVICE AND REPAIR; STANDARD PROCEDURE), and inspect for leaks (Refer to COOLING SYSTEM; TESTING AND INSPECTION).
5. Plug power cord into block heater. Route cord away from moving parts, linkages and exhaust system components. Secure cord in place with tie straps.