Inspection [01/2019 - 11/2022]: Procedure

WARNING: This page is about a different car, the 2022 Toyota Corolla, 2021 Toyota Corolla, 2020 Toyota Corolla, and 2019 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT OIL PUMP RELIEF VALVE

Coat the oil pump relief valve with engine oil, then check that it falls smoothly into the valve hole by its own weight.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

If the oil pump relief valve does not fall smoothly, replace the oil pump assembly.

INSPECT OIL PUMP ASSEMBLY

Check the tip clearance.

Using a feeler gauge, measure the clearance between the oil pump drive rotor and oil pump driven rotor tips.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Tip Clearance

0.08 to 0.16 mm (0.00315 to 0.00630 in.)

Maximum Tip Clearance

0.35 mm (0.0138 in.)

HINT:

If the tip clearance is greater than the maximum, replace the oil pump assembly.

Check the side clearance.

Using a feeler gauge and precision straightedge, measure the clearance between the oil pump drive rotor, oil pump driven rotor and precision straightedge.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Side Clearance

0.085 to 0.135 mm (0.00335 to 0.00531 in.)

Maximum Side Clearance

0.16 mm (0.00630 in.)

HINT:

If the side clearance is greater than the maximum, replace the oil pump assembly.

Check the body clearance.

Using a feeler gauge, measure the clearance between the oil pump driven rotor and oil pump body.

Standard Body Clearance

0.12 to 0.19 mm (0.00472 to 0.00748 in.)

Maximum Body Clearance

0.325 mm (0.0128 in.)

HINT:

If the body clearance is greater than the maximum, replace the oil pump assembly.