Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Impreza 2001-2002.2004-2007 Approved Subaru Impreza 2004 WRX STi 08. MECHANISM AND FUNCTION 17. COOLING 03. Water Pump
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W1860BE.book Page 5 Tuesday, January 28, 2003 11:01 PM
WATER PUMP
COOLING
3. Water Pump
The water pump is located in the front portion of the left bank cylinder block and is driven by the
engine through the timing belt. The thermostat is fitted into the coolant inlet at the bottom of the wa-
ter pump. When the pump's impeller rotates, the coolant is drawn into the pump from the lower pipe
(which is connected to the radiator hose) via the thermostat. It then flows along the perimeter of the
impeller and then is discharged for circulation through a circuit depending on the coolant tempera-
ture.
(1)
(2) (1)
(3)
(4)
(6)
(5)
(B)
(C)
(A) (D)
(6)
CO-00068
(A) From engine oil cooler (1) Pulley
(B) From water tank (2) Ball bearing
(C) From radiator (3) Mechanical seal
(D) From heater (4) Impeller
(5) Thermostat
(6) Thermostat cover
CO(H4DOTC)-5
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