Oil Pump Cleaning and Inspection

SA91101NE Feeler Gauge Set

1. Inspect the body clearance:
1. Using a feeler gauge Service Tool SA91101NE or equivalent, measure the clearance between the driven rotor and pump body.
Body to Side Clearance
• Standard: 0.150-0.277 mm (0.006-0.011 in)
• Service Limit: 0.277 mm (0.011 in) max
2. If the clearance is greater than the maximum, replace the oil pump rotor set.




2. Inspect the tip clearance:
Using a SA91101NE , measure the clearance between both rotor tips. Clearance:

Standard: 0.150 mm (0.006 in) max





3. Inspect the end-to-end clearance:
Using a SA91101NE or equivalent or Plastigage® or equivalent, measure the clearance between the side of the gerotor assembly and the cover plate. End-to-End Clearance
• Standard: 0.040-0.125 mm (0.0016-0.0049 in)
• Service Limit: 0.128 mm (0.005 in) max