Oil Pump Cleaning and Inspection
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2017 GMC Yukon XL, 2017 GMC Yukon, 2017 Chevrolet Tahoe, 2017 Chevrolet Suburban, and 2017 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
- Clean the components in solvent.
- Dry the components with compressed air.
- Inspect the oil pump housing (12), intermediate cover (11), intermediate housing (9), and the housing cover (1) for cracks, excessive wear, scoring, or casting imperfections.
- Inspect the oil pump housing-to-oil pan sealing surface for scratches or gouging.
- Inspect the oil pump base-to-engine block oil gallery surfaces for scratches or gouging.
- Inspect the oil pump base for damaged bolt hole threads.
- Inspect the pump slide (8) for excessive wear, scoring, or gouges.
- Inspect the oil pump internal oil passages for restrictions.
- Inspect the oil pump rotor (4) and vanes (3) for cracks, wear, or damage.
- Inspect the oil pump slide spring (7) for breakage.
- Inspect the oil pump slide (8) and slide seals (6) for cuts or damage.
- Inspect the Oil Pressure Relief Valve Plug (15) for leaks or damage.
- Inspect the Oil Flow Control Solenoid O-rings (16, 17) cracks or damage.
NOTE:
The internal components of the oil pump assembly are not serviced separately. If the oil pump components are worn or damaged, replace the oil pump as an assembly.
WARNING:
Refer to Safety Glasses and Compressed Air Warning .