Cooling System Flushing

Cooling System Flushing





NOTE: Dispose of old coolant and flushing water contaminated with antifreeze and cleaning chemicals in accordance with local, state or federal laws.

1. Remove the radiator. For additional information, refer to Radiator Service and Repair.

2. NOTICE: Radiator internal pressure must not exceed 138 kPa (20 psi). Damage to the radiator can result.

Backflush the radiator with the radiator in an upside-down position and a high-pressure hose in the lower hose location.

3. NOTE: Thermostat and housing are serviced as an assembly.

Remove the thermostat housing. For additional information, refer to Thermostat Housing Service and Repair.

4. Position a high-pressure water hose into the engine through the engine return and backflush the engine.