2000 Saturn LS1 L4-2.2L VIN FFACTORY OEM SERVICE PROCEDURE

Oil Pump Assembly


Factory service manual diagram




1. Install pressure relief valve and pressure relief valve spring.
2. Install oil pump pressure relief valve plug.
- Torque: 40 Nm (30 ft. lbs.)
3. Lubricate drive and driven rotors with clean engine oil.

IMPORTANT: Align marks on drive and driven rotors.

4. Install drive and driven rotors into pump body.
5. Fill oil pump with petroleum jelly to prim oil pump.

NOTICE: Fill the oil pump cavities with petroleum jelly prior to installation. This will ensure that there is oil pressure immediately on initial start up and will prevent engine damage.

Factory service manual diagram




6. Lubricate drive and driven rotors with clean engine oil.
7. Install oil pump gear cover plate screws.
- Torque: 6 Nm (53 inch lbs.)
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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