Low Pressure Oil Pump: Inspection
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- Inspect components for damage and wear. Install inner and outer rotors in low pressure oil pump body. Place straightedge across low pressure oil pump body so it is above both rotors.
- Using feeler gauge, measure rotor end clearance between rotor and straightedge. See Fig 1. Rotor end clearance should be .00078-.00315" (.020-.080 mm).
- With both rotors installed in low pressure oil pump body, use feeler gauge to measure clearance between outer edge of outer gerotor and oil pump body. See Fig 2.
- Outer gerotor-to-oil pump body clearance should be .02795-.03189" (.71-.81 mm). Replace low pressure oil pump if any measurement is not within specification.