Water Pump: Testing and Inspection

Water Pump

INSPECTION
1. Check water pump bearing for smooth rotation.
2. Check water pump pulley for abnormalities.
3. Inspect the impeller for crack or deformation.





4. Check clearance between impeller and pump case.
Clearance between impeller and pump case:
Standard 0.4 - 1.6 mm (0.016 - 0.063 inch)
5. After water pump installation, check pulley shaft for engine coolant leaks. If leaks are noted, replace water pump assembly.