Fluid Pump: Testing and Inspection

1. Install the pump gears and shaft in the main valve body.





2. Measure the side clearance of the drive and driven gears.
- Pump Gears Side (Radial) Clearance Standard (New):
- Drive gear (diameter) 0.210 - 0.265 mm (0.0083 - 0.0104 inch).
- Driven gear (radius) 0.035 - 0.063 mm (0.0014 - 0.0025 inch).





3. Remove the shaft, then measure the thrust clearance of the driven gear-to-valve body.
- Drive/Driven Gear thrust (Axial) Clearance:
- Standard (New): 0.03 - 0.05 mm (0.001 - 0.002 inch).
- Service Limit: 0.07 mm (0.0028 inch).