Inspection [10/2018 - ]: Procedure

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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 ROTOR

Check the side clearance (Oil pump driven rotor side).

Using a vernier caliper, measure the width of the oil pump driven rotor.

HINT:

Perform the measurement at 3 random places.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Oil Pump Driven Rotor
*2	Oil Pump Body
*a	Width
*b	Depth
*c	Straightedge

Using a vernier caliper and precision straightedge, measure the depth of the oil pump body.
NOTE:
Make sure to deduct the thickness of the precision straightedge.

HINT:

Perform the measurement at 3 random places.
Subtract the oil pump driven rotor width measurement from the oil pump body depth measurement.
Standard Side Clearance

0.025 to 0.070 mm (0.000984 to 0.00276 in.)

HINT:

If the result is not as specified, replace the oil pump assembly.

Check the side clearance (Oil pump regulator ring side).

Using a vernier caliper, measure the width of the oil pump regulator ring.

HINT:

Perform the measurement at 3 random places.

*1	Oil Pump Regulator Ring
*2	Oil Pump Body
*a	Width
*b	Depth
*c	Straightedge

Using a vernier caliper and precision straightedge, measure the depth of the oil pump body.
NOTE:
Make sure to deduct the thickness of the precision straightedge.

HINT:

Perform the measurement at 3 random places.
Subtract the oil pump regulator ring width measurement from the oil pump body depth measurement.
Standard Side Clearance

0.025 to 0.075 mm (0.000984 to 0.00295 in.)

HINT:

If the result is not as specified, replace the oil pump assembly.