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Engine Maintenance (Rev. 04/03)
42
ENGINE COOLING SYSTEM
The engine employs a closed, circulating type, pressurized
cooling system. Correct engine temperatures are controlled
and maintained by a radiator, fan and thermostat. The
coolant is circulated through the system by a belt-driven
centrifugal pump. The pump draws the coolant from the
side of the radiator (large header), circulates it through the
cylinder block and head, then back to the radiator. A
thermostat mounted in the water outlet from the cylinder
head to the radiator automatically maintains coolant
temperature within the specified temperature range.
Engine Cooling Components
All water-cooled engines are shipped from the factory with
a 50% permanent type antifreeze concentrate and 50%
water mixture in the engine cooling system.
This
provides the following:
1.
Prevents freezing down to -30 F (-34 C).
2.
Retards rust and mineral scale that can cause engine
overheating.
3.
Retards corrosion (acid) that can attack accumulator
tanks, water tubes, radiators and core plugs.
4.
Provides lubrication for the water pump seal.
Summary of Contents for 088669
Page 4: ......
Page 8: ......
Page 12: ...Safety Precautions Rev 04 03 iv PUB126...
Page 13: ...Safety Precautions Rev 04 03 v aea105...
Page 14: ......
Page 28: ...Unit Description Rev 04 03 14 Rear View Curbside RD II SR Evaporator aea105...
Page 32: ...Unit Description Rev 04 03 18 Power Receptacle Box RD II SR 50 aea102...
Page 76: ...Refrigeration Maintenance Rev 04 03 62...
Page 77: ...Refrigeration Maintenance Rev 04 03 63...
Page 81: ...Refrigeration Maintenance Rev 04 03 67...
Page 103: ...89 Hilliard Clutch Maintenance Clutch Assembly...
Page 106: ...Hilliard Clutch Maintenance Rev 04 03 92 12 Install retaining ring Clutch Torque Values...
Page 125: ...111 Cool Cycle RD II SR with TherMax Heating...
Page 126: ...112 Condenser Cycle RD II SR with TherMax Heating...
Page 127: ...113 Heat and Defrost Cycle RD II SR with TherMax Heating...
Page 129: ...115...
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