Water Pump: Inspection
- Check water pump for smooth operation. Check water pump pulley for any problems. Using dial indicator, check the runout of the impeller while rotating the pulley. See WATER PUMP SPECIFICATIONS table below. If runout is not as specified, replace water pump.
- Measure clearance between impeller and water pump housing. If clearance is not as specified, replace rotor. See WATER PUMP SPECIFICATIONS table below.
WATER PUMP SPECIFICATIONS
| Application | In. (mm) | |
|---|---|---|
| Maximum Runout | .020 (.5) | |
| Impeller-to-Housing Clearance | ||
| Standard | .020-.028 (.5-.7) | |
| Limit | .039 (1.0) | |