14-4
2. Thermostat
• The thermostat is a bottom bypass
type that uses a wax-filled pellet as its
flow-regulating element. When the
wax is heated, it melts from solid to liq-
uid, changing its total volume. This al-
lows the valve to open or close in
accordance with the coolant tempera-
ture, regulating and adjusting the flow
of coolant to the radiator and to the
water pump (bypassing the radiator).
3. Water Pump
• The water pump has a drain hole to
prevent coolant from entering the unit
bearing in case of a defect in the unit
seal.
STRUCTURE AND OPERATION
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