215676 371 Revision A
Figure 5.94: Radiator Drain Valve
10. Close radiator drain valve (A) at the bottom of the
radiator’s lower tank.
NOTE:
The frame has been removed from the illustration for the
sake of clarity.
11. Fill the system with clean water through the radiator and
replace the radiator cap.
Figure 5.95: Heater Shut-Off Valve
12. Open heater shut-off valve (A).
13. Start the engine.
14. Turn the temperature control knob to the HIGH position.
Allow the engine to run until it reaches operating
temperature.
15. Stop the engine, and remove the key from the ignition.
16. Drain the water from the cooling system quickly. This
procedure is identical to the coolant removal procedure.
NOTE:
Drain the water from the cooling system as quickly as
possible after the engine has been turned off to prevent
rust flakes or other sediment from settling.
17. Close the drain valves.
18. Fill the cooling system with a solution of clean water and a
heavy-duty radiator cleaner. Follow the instructions
provided with the cleaner.
19. After using the cleaner solution, flush the system with clean
water again. Inspect the radiator, hoses, and fittings
for leaks.
20. Close the drain valves.
21. Fill the cooling system with coolant. For instructions, refer
to Adding Coolant, page 372
MAINTENANCE AND SERVICING
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