Silicone Fluid Leaks
Small fluid leaks that are present around the bearing assembly do not affect the fan clutch operation. If leakage appears extensive, replace the fan clutch. Refer to Fan Clutch Replacement .
Draining Procedure
| CAUTION | With a pressurized cooling system, the coolant temperature in the radiator can be considerably higher than the boiling point of the solution at atmospheric pressure. Removal of the surge tank cap, while the cooling system is hot and under high pressure, causes the solution to boil instantaneously with explosive force. This will cause the solution to spew out over the engine, the fenders, and the person removing the cap. Serious bodily injury may result. |
- Park the vehicle on a level surface.
- Remove the coolant pressure cap.
- Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-197837-S12044229642005101300000) in General Information.
- Place a drain pan under the lower radiator hose.
- Using the J 38185 reposition the lower radiator hose clamp at the radiator.
- Remove the lower radiator hose from the radiator.
- Drain the cooling system.
- If a complete engine block drain is required, remove the engine block drain plug.
- Inspect the coolant.
- Follow the appropriate procedure based on the condition of the coolant. Normal in appearance-Follow the filling procedure. Discolored-Follow the flush procedure. Refer to «Flushing»(ref-197849-S19575906872005101300000) .
Flushing
| IMPORTANT | Do not use a chemical flush. Store used coolant in the proper manner, such as in a used engine coolant holding tank. Do not pour used coolant down a drain. Ethylene glycol antifreeze is a very toxic chemical. Do not dispose of coolant into the sewer system or ground water. This is illegal and ecologically unsound. Various methods and equipment can be used to flush the cooling system. If special equipment is used-such as a back flusher-follow the manufacturer's instructions. However, always remove the thermostat before back flushing the system. Block the drive wheels. Place the transmission in park (P) or neutral (N). Engage the park brake. Run the engine until the thermostat opens. Stop the engine. Follow the drain and fill procedure using only clean drinkable water. Repeat the procedure if necessary, until the fluid is nearly colorless. Refer to Draining and Filling Cooling System . Fill the coolant surge tank to the FULL HOT mark. Refer to Draining and Filling Cooling System . |
