Aeon AT56-69E, Service Manual, Page: 63 / 196

ENGINE
4-10
AIR DRAIN PROCEDURE
Always wear safety glasses and proper shop
clothing when performing the procedures in
this manual. Failing to do so may lead to
possible injury or death.
Use caution when performing these
procedures.
Coolant may be hot and may cause severe
injury or burns.
3. Remove recovery bottle cap and fill bottle to the full line.
4. Slightly loosen the bleed hose (bypass hose) to let air drain.
5. Push back and tight the bleed hose.
6. Start the engine and let it idle for 5-10 minutes or until the
thermostat opens and allows coolant to flow through the
system. Bubbles will escape continuing.
7.Until fan start the temperature will cool down and coolant be
sucked into coolant system.
8. Squeeze the coolant lines by hand to help purge the system
of air.
NOTE: If there is air in the system you will see air
bubbles forming through the radiator filler neck.
9. Add coolant to the radiator filler neck if the level goes
down.
NOTE: If the coolant level is LOW in the radiator, or if
there are leaks in the system, the coolant system will
not draw coolant from the reservoir tank.
NOTE: Use this procedure when a unit overheats and
no apparent leaks in the cooling system are found.
1. Drive the vehicle onto a slight incline and use properly
weight rated ramps. If an incline is not available, slightly
elevate the front of the vehicle.
2. Place the vehicle in parking brake and block the rear wheels.