Draining, Flushing, and Refilling Cooling System
1. Slowly turn the radiator cap to relieve pressure, then carefully remove cap (A). 2. Open radiator and engine drain cocks (B). 3. Remove thermostat cover (C) and thermostats. Install cover without thermostats. Tighten cap screws. IMPORTANT: Thermostats must be removed and cab heater must be in the ON position during entire flushing procedure. 4. Close drain cocks, fill system with a commercial cooling system cleaning solution . Operate engine up to normal temperature. Stop engine and drain system. IMPORTANT: Never pour cold water or coolant into hot engine. 5. Close drain cocks, fill system with clean water . Operate engine up to normal temperature. Stop engine and drain system. 6. Remove thermostat cover and clean sealing area. Apply sealant to new gasket and install thermostats and gasket. Tighten cap screws to 48 N·m (35 lb-ft). 7. Close drain cocks again. Fill system with the specified coolant . Operate engine to circulate and mix coolant. Coolant level should be up to mark on expansion tank. Add coolant conditioner if required. |
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CAUTION:
Avoid personal injury. DO NOT remove radiator cap when engine is hot. Stop engine and wait until engine has cooled.
AG,RF30435,2542 -19-21FEB00-1/1 |