Cooling System: Service and Repair

Coolant Air Bleed Nipple:

Fig. 108 Cooling System Bleed Bolt:

1. Set heater temperature dial to maximum heat.
2. With engine cool, remove radiator cap.
3. Refill cooling system to specifications, mixing coolant concentration to a 50-50 mix.
4. Loosen air bleed bolt in the water outlet Figs. 107 and 108, then fill radiator to bottom of filler neck.
5. Torque bleed bolt to specifications as soon as coolant starts to runout in a steady stream without bubbles.
6. With radiator cap off, start engine and let run until warm (radiator cooling fan goes on at least twice).
7. Add more coolant mix to bring level back-up to bottom of filler neck.
8. Replace radiator cap, check for leaks.