Thermo King KD-II SR, Manual

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Engine Maintenance (Rev. 04/03)
69
Bleeding Cooling System
After filling the radiator, run the unit up to operating tem-
perature to check for overheating and coolant level and
allow the air to be purged for a few minutes.
CAUTION: Do not remove the radiator cap while
the engine is hot.
Engine Thermostat
For the best engine operation, use a 180 F (82 C) thermostat
year round.
1. Thermostat Housing
2. Gasket
3. Thermostat
4. Water Pump
Water Pump Assembly and Thermostat
ENGINE FUEL SYSTEM
The fuel system used on the Thermo King TK 3.74 diesel is
a high pressure system used in conjunction with a precham-
ber.
The components of the fuel system are:
1. Fuel tank (may be the truck fuel tank).
2. Electric Fuel pump.
3. Fuel filter.
4. Injection pump.
5. Injection nozzles.
A 10 psig (69 kPa) electric fuel pump pulls fuel from the
fuel tank through a prefilter, then pushes it to the fuel filter,
and to the injection pump. The prefilter is designed for
diesel fuel and is the only type that should be used.