Subaru IMPREZA GD 2007 Series Manual page 79

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Water Pump
COOLING
C: INSPECTION
1) Check the water pump bearing for smooth rota-
tion.
2) Check the water pump pulley for abnormalities.
3) Make sure the impeller is not deformed or dam-
aged.
4) Inspect the clearance between impeller and
pump case.
Clearance between impeller and pump case:
Standard
0.5 — 1.5 mm (0.020 — 0.060 in)
CO-00293
5) After water pump installation, check pulley shaft
for engine coolant leaks or noise. If leaks or noise
are noted, replace the water pump assembly.
CO(H4SO)-20