Blue Bird Coachworks 450 LXi, Руководство пользователя

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5-3 Engine Maintenance
450 LXi Owner Manual
~ 5-3-18 ~
Rev. “C”
5-3.17.2 Flush
Flush the cooling system with clean water in order to remove any debris.
Close the drain valve (if equipped). Clean the drain plugs. Install the drain plugs to the specifi ed torque.
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Fill the cooling system with clean water. Install the cooling system fi ller cap.
Start and run the engine at low idle until the temperature reaches 49 to 66°C (120 to 150°F).
Stop the engine and allow the engine to cool. Loosen the cooling system fi ller cap slowly in order to relieve any pressure.
Remove the cooling system fi ller cap. Open the drain valve (if equipped) or remove the cooling system drain plugs. Allow
the water to drain. Flush the cooling system with clean water. Close the drain valve (if equipped). Clean the drain plugs.
Install the drain plugs to the specifi ed torque.
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5-3.17.3 Fill
Fill the cooling system with Extended Life Coolant (ELC). Refer to “Refi ll Capacities and Recommendations” section of this
manual for more information on cooling system specifi cations. Do not install the cooling system fi ller cap.
Start and run the engine at low idle. Increase the engine rpm to high idle. Run the engine at high idle for one minute in
order to purge the air from the cavities of the engine block. Stop the engine.
Check the coolant level. Maintain the coolant level within 13 mm (0.5 inch) below the bottom of the pipe for fi lling.
Maintain the coolant level within 13 mm (0.5 inch) to the proper level on the sight glass (if equipped.)
Clean the cooling system fi ller cap. Inspect the gasket that is on the cooling system fi ller cap. If the gasket that is on the
cooling system fi ller cap is damaged, discard the old cooling system fi ller cap and install a new cooling system fi ller cap.
If the gasket that is on the cooling system fi ller cap is not damaged, us a 9S-8140 Pressurizing Pump in order to pressure
test the cooling system fi ller cap. The correct pressure for the cooling system fi ller cap is stamped on the face of the
cooling system fi ller cap. If the cooling system fi ller cap does not retain the correct pressure, install a new cool cooling
system fi ller cap.
Start the engine. Inspect the cooling system for leaks and for proper operating temperature.
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5-3.18 Cooling System Coolant Extender (ELC) - Add
Caterpillar Extended Life Coolant (ELC) does not require the frequent Supplemental Coolant Additive (SCA) additions that are
associated with the present conventional coolants. The Extender only needs to be added once.
Check the cooling system only when the engine is stopped and cool.
Loosen the cooling system fi ller cap slowly in order to relieve pressure. Remove the cooling system fi ller cap.
It may be necessary to drain enough coolant from the cooling system in order to add the Extender.
Add Extender according to the requirements for your engine’s cooling system capacity. Refer to the “ Refi ll Capacities and
Recommendations ” section of this manual for the capacity of the cooling system for your engine.
Clean the cooling system fi ller cap. Inspect the gaskets on the cooling system fi ller cap. Replace the cooling system fi ller
cap if the gaskets for the cooling system fi ller cap are damaged. Install the cooling system fi ller cap.
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NOTE: If equipped, be sure to fl ush the heater and any related supply and return lines.
NOTICE: Fill the cooling system no faster than 19 L (5 US gal) per minute to avoid air locks.
NOTICE: Fill the cooling system no faster than 19 L (5 US gal) per minute to avoid air locks.