Coolant Heater (Dealer Installation)

Coolant Heater Replacement (Dealer Installation - 6.0L Engine)

Dealer Installation Only
1. Drain the cooling system/engine block.
2. Raise and suitably support the vehicle.





3. Remove the oil pan skid plate bolts and plate.





4. Remove the oil cooler hose bracket bolt.
5. Remove the oil cooler hose adapter bolts.
6. Remove and discard the oil cooler hose adapter gasket.
7. Position the oil cooler hose adapter end out of the way.





Notice: Refer to Fastener Notice in Service Precautions.

8. Install the coolant heater in place of the drain plug.
Tighten the coolant heater to 50 Nm (37 ft. lbs.).





9. Push the engine coolant heater cord electrical connector (2) firmly into the coolant heater (1).





Important: The engine coolant heater cord must not touch the engine, hot pipes, manifold, or any moving parts. Always keep the electrical cord neatly rolled up with the end of the cord tucked in the center of the coil and secured in place.

10. Place the cord into position.
11. Install the heater cord bolt and retainer.
Tighten the bolt to 8 Nm (71 inch lbs.).





12. Position the oil cooler hose adapter.
13. Install a NEW oil cooler hose adapter gasket.
14. Install the oil cooler hose adapter bolts.
Tighten the bolts to 12 Nm (106 inch lbs.).
15. Install the oil cooler hose bracket bolt.
Tighten the bolt to 25 Nm (18 ft. lbs.).





16. Install the oil pan skid plate and bolts.
Tighten the bolts to 20 Nm (15 ft. lbs.).
17. Lower the vehicle.
18. Fill the cooling system/engine block.