1. The coolant solution lowers the freezing temperature from 32° F. to approximately -30 ° F (0° to -35° C). If a 100% water solution is used, freezing will cause the water to expand 9% which could result in cracking the engine block or radiator core. 2. The coolant raises the solution's boiling point from 212° F (100 ° C) to approximately 220° F (106° C). This higher boiling point creates a higher cooling capacity. 3. The coolant will prevent rust and corrosion from forming in the radiator core and in the engine. 4. The coolant prevents the formation of foam or air bubbles in the system. 5. The coolant contains an ingredient that lubricates the water pump seal and prolongs the seal's life. Important Under no condition should a vehicle operate without a minimum of 50% ethylene glycol to a maximum of 65% ethylene glycol solution. We recommend using quality antifreeze manufactured by a reputable company. We also recommend using antifreeze with low silicate compound. Many low quality coolants con tain high concentrations of silicate compounds that can damage the water pump seal. For the cooling system to perform at top efficiency, we recommend that the coolant is changed and the radiator flushed after a maximum of 2,000 hours of operation or at least once year. Water Pump The water pump, which is mounted on the front of the cylinder block, is the driving force of the cooling system. The water pump propels the coolant through the cooling system.
How it works When the engine is hot, the pump draws coolant from the radiator through the lower radiator hose and forces it through passages in the cylinder block. The pump consists of six parts: (1) housing, (2) seal, (3) pulley, (4) drive shaft, (5) bearing, and impeller.
IC 100 page 6
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