OIL PUMP > INSPECTION

for Preparation Click here

1. Apply engine oil to the oil pump relief valve. Check that the valve falls smoothly into the valve hole of the oil pump body by its own weight.
   

1. Check the tip clearance.
   
   

   1. Using a feeler gauge, measure the clearance between the tips of the drive rotor and driven rotor.
      

      Standard tip clearance:

      0.08 to 0.16 mm (0.0031 to 0.0063 in.)
      

      Maximum tip clearance:

      0.21 mm (0.0083 in.)
      

      If the tip clearance is greater than the maximum, replace the oil pump.
      

2. Check the body clearance.
   

   Text in Illustration 

   *1	Feeler Gauge

   
   

   1. Using a feeler gauge, measure the clearance between the driven rotor and oil pump body.
      

      Standard body clearance:

      0.10 to 0.18 mm (0.0039 to 0.0071 in.)
      

      Maximum body clearance:

      0.20 mm (0.0079 in.)
      

      If the body clearance is greater than the maximum, replace the oil pump.
      

3. Check the side clearance.
   

   Text in Illustration 

   *1	Feeler Gauge
   *2	Steel Square

   
   

   1. Using a feeler gauge and steel square , measure the clearance between the rotors and steel square.
      

      Standard side clearance:

      0.03 to 0.09 mm (0.0012 to 0.0035 in.)
      

      Maximum side clearance:

      0.15 mm (0.0059 in.)
      

      If the side clearance is greater than the maximum, replace the oil pump.