Vane Pump (For 2Gr-Fe) Inspection

Using a micrometer, measure the outer diameter [a] of the vane pump shaft with pulley.

Using vernier calipers, measure the inner diameter [b] of the vane pump front housing bushing.

Calculate the oil clearance.
Oil clearance = Inner diameter of the bushing [b] - Outer diameter of the shaft [a].

Maximum oil clearance:

0.07 mm (0.0028 in.)

Using a micrometer, measure the thickness of the 10 vane pump plates.

Standard thickness:

1.405 to 1.411 mm (0.05531 to 0.05555 in.)

Using a feeler gauge, measure the clearance between the side face of the vane pump rotor groove and the vane pump plates.

Maximum clearance:

0.03 mm (0.0012 in.)

Coat the flow control valve assembly with power steering fluid and check that it falls smoothly into the flow control valve due to its own weight.
If the control valve does not fall into the hole smoothly, replace the vane pump assembly.

Check the flow control valve assembly for leakage. Close one of the holes and apply compressed air, 392 to 490 kPa (4 to 5 kgf/cm², 57 to 71 psi), into the opposite side hole, and confirm that air does not come out from the end holes.
If air leaks, replace the vane pump assembly.

Using vernier calipers, measure the free length of the flow control valve compression spring.

Minimum free length:

29.2 mm (1.150 in.)

Check that the pump rotates smoothly without abnormal noise.

Temporarily install the service bolt.

Recommended service bolt:

Thread diameter:

10 mm (0.39 in.)

Thread pitch:

1.25 mm (0.0492 in.)

Bolt length:

50 mm (1.97 in.)

Using a torque wrench, check the pump rotating torque.

Rotating torque:

0.27 N*m (2.8 kgf*cm, 2.4 in.*lbf) or less