MAINTENANCE Cooling System Pressure Test 2. Carefully straighten any bent radiator fins. Refer to Chapter 3 for cooling system pressure test procedure. Cooling System Hoses 3. Remove any obstructions with compressed air or low pressure water. 1. Inspect all hoses for cracks, deterioration, abrasion or leaks. Replace if necessary. CAUTION Washing the vehicle with a high-pressure washer could damage the radiator fins and impair the radiators effectiveness. Use of a high-pressure washer is not recommended. Recovery Bottle Coolant Drain / Radiator Removal Filler Neck Coolant Drain 1. Remove the front hood. T-Connector WARNING Never drain the coolant when the engine and radiator are warm or hot.
Hot coolant can cause severe burns. Allow engine and radiator to cool. 2. Check tightness of all hose clamps. 2. Slowly remove the pressure cap to relieve any cooling system pressure. CAUTION Do not over-tighten hose clamps at radiator, or radiator fitting may distort, causing a restriction to coolant flow. Radiator hose clamp torque is 36 in. lbs. (4 Nm). 3. Place a suitable drain pan underneath the T-fitting on the front RH side of the vehicle. 4. Drain the coolant from the radiator by removing the lower engine inlet hose from the T-fitting. Properly dispose of the coolant. Radiator 1. Check radiator (A) air passages for restrictions or damage. T-Fitting A Drain Here 5.
Allow coolant to completely drain. Flush radiator fins in this direction 2.22