Oil Pump Visual Inspection and Measurement
WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the oil pump cover and the engine front cover for flatness.
- Inspect the oil pump vanes, the oil pump vane rotor, the oil pump vane rings and the oil pump slide for localized flatting.
- Inspect the oil pump slide pivot pin for firm seat.
- Measure the oil pump axial clearances. Use a straight edge (1) and a feeler gauge.
- The maximal axial clearance between engine front cover and oil pump vane rotor should be 0.1 mm (0.004 in).
- The maximal axial clearance between engine front cover and oil pump vane should be 0.09 mm (0.0035 in).
- The maximal axial clearance between engine front cover and oil pump vane ring should be 0.4 mm (0.016 in).
- The maximal axial clearance between engine front cover and oil pump slide should be 0.08 mm (0.0031 in).
- The maximal axial clearance between engine front cover and oil pump slide seal should be 0.09 mm (0.0035 in).
- Measure the oil pump radial clearance. Use a feeler gauge (1). Measure the clearance between oil pump vane rotor and oil pump vane (3).
The maximal clearance should be 0.05 mm (0.002 in).
- Measure the clearance between oil pump vane and oil pump slide (2).
The maximal clearance should be 0.2 mm (0.008 in).
NOTE:
Oil pump components are installed.