Thermo King T-1000R, Maintenance Manual

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Engine Maintenance 9-7
Bleeding Air from the Cooling System
Often when a self powered truck unit cooling system is refilled, air is trapped in the engine block and/or under the thermostat.
To effectively remove all air from the cooling system of the T-Series and UT-Series units the use of a fill tube and the following
procedure is recommended.
NOTE: If an engine runs with air trapped in the block, the engine may be damaged. The high water temperature switch may
not protect an engine that has air trapped in the block, because the high water temperature switch is designed to protect an
engine from overheating due to failures in the cooling system and the loss of coolant.
1. Fill the cooling system via the expansion tank allowing the coolant level up to the overflow tank inlet passage opening.
2. The recommended quantity is listed in the table below.
3. To remove all air trapped in the cooling system use a custom made coolant fill tube. This coolant fill tube can be manufactured
locally or requested from the service department in Thermo King Galway.
a. Install the coolant fill tube assembly to the expansion tank as shown in the following images:
1. Radiator 4. Expansion Tank
2. Water Temperature Sensor 5. Coolant Level Sensor
3. Engine 6. Bleed Line
UT-Series Engine Cooling System Components
T-500 T-Dairy T-600 T-800 T-1000 T-1200 UT-800 UT-1200
12 pints 12 pints 12 pints 12 pints 13 pints 13 pints 11 pints 11 pints
5.678 litres 5.678 litres 5.678 litres 5.678 litres 6.151 litres 6.151 litres 5.20 litres 5.20 litres
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2
4
3
5
6