subaru Workshop Repair Guides

Subaru Workshop Service and Repair Manuals

Water Pump|Specifications|Page 1444 > < Water Pump|Specifications
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Water Pump: Testing and Inspection

Water Pump

Inspection

1. Check the water pump bearing for smooth rotation.
2. Check the water pump pulley for abnormalities.
3. Check the impeller for damage or abnormal deformation.
4. Check the clearance between impeller and pump case.

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Clearance between impeller and pump case: 

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Standard ...............................................................................................................................................................  0.5 - 1.5 mm (0.020 - 0.060 in)

5. After water pump installation, check the pulley shaft for engine coolant leaks. If leaks are noted, replace the water pump assembly.

Water Pump|Specifications|Page 1444 > < Water Pump|Specifications