Toyota 1988 Cooling Engine System PDF Specifications

Pressure Cap
Modern refrigeration systems use a closed system type of ceiling. The cooling system allows to expand and create pressure, a cooling is allowed to bleed past the cover to the overflow tank. When the engine cools and coolant contracts, housing permits in the coolant overflow container to siphon back into the system. The pressure cap also increases the pressure in the cooling system. Increased pressure increases the boiling point, one pound of pressure increases the boiling point of approximately 3F (1.66C).

Coolant mixture
Engine coolant must be mixed with water to a percent. 100% coolant could cause overheating and premature failure of the system. Coolants are designed to work best when mixed with water. Percentage of cooling water may vary depending on climatic conditions, but a mixture of 50/50 is the standard percentage. Engine cooling should also include additional aluminum protection. These measures will help protect against damage metal.

Thermostats
Most thermostats are heat wax pellet type. As the increase in coolant temperature wax starts to expand. This expansion overcomes the spring tension allows the thermostat to open. Some thermostats also contain other bleed holes, the small amount of circulation and elimination of blocks of airspace.

Maintenance
Regular maintenance is necessary for the cooling system and prolongs the life of the engine because the engine and cooling system are made of different metals. Change the coolant at regular maintenance reduces electrolysis and removes sediment.

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