IT IS IMPERATIVE THAT THE COOLING SYSTEM AIR BLEED VALVE BE OPENED BEFORE ANY COOLANT IS ADDED TO THE COOLING SYSTEM. FAILURE TO OPEN
THE BLEED VALVE FIRST WILL RESULT IN AN INCOMPLETE FILL OF THE SYSTEM.
1. Close radiato draincock by turning clockwise.
2. Open cooling system bleed valve. See Fig. 25.
3. Attach a 6.35 mm (0.250 in.) Inside diameter clear hose that is 120.0 cm (48 in.) Long to the bleed valve. Route the hose away from accessory drive belts and radiator fan. Position the other end of hose into a collecting container. The hose will prevent coolant from contacting accessory drive belts and other components.
4. Remove cooling system pressure cap. Attach Special Tool 8195, Filling Aid Funnel to coolant pressure container filler neck.
5. Use the supplied clip to pinch overflow hose that connects between the two chambers of the pressure container. See Fig. 25.
6. Pour coolant into the larger section of Filling Aid Funnel (the smaller section of funnel is to allow air to escape).
7. Slowly continue filling until a steady stream of coolant flows from attached hose on bleed valve.
8. Close bleed valve and continue filling system to top of Filling Aid Funnel.
9. Remove clip from overflow hose.
10. Allow coolant in Filling Aid Funnel to drain into overflow chamber of pressure container.
11. Remove Special Tool 8195, Filling Aid Funnel and install pressure cap on pressure container.
12. Remove hose from bleed valve.
13. Start engine and allow to run until thermostat opens and radiator fans cycle.
The engine cooling system will push any remaining air into the pressure container within about one half hour of normal driving. As a result, a drop in coolant level in the pressure container may occur.
If the engine cooling system overheats and pushes coolant into the overflow chamber of the pressure container, this coolant will be sucked back into the cooling system ONLY IF THE PRESSURE CAP IS LEFT
ON THE PRESSURE CONTAINER. Removing the pressure cap breaks the vacuum path between the two chambers of the pressure container and the coolant will not return to the cooling system.
14. Shut off engine and allow it to cool down. This permits coolant to be drawn into the pressure chamber.
15. With engine COLD, observe coolant level in pressure chamber. Coolant levelshould be within MIN and MAX marks. Adjust coolant level as necessary.
1 SPECIAL TOOL 8195
2 COOLING SYSTEM BLEED VALVE
3 PINCH OVERFLOW HOSE
4 COOLANT PRESSURE CONTAINER
Thursday, April 5th, 2012 AT 4:01 PM