VANE PUMP(for 5L-E) INSPECTION

PROCEDURE


  1. INSPECT VANE PUMP SHAFT AND BUSH IN VANE PUMP HOUSING


    1. A01XHXSE02
      Text in Illustration
      *a Outer Diameter
      *b Inner Diameter

      Using a micrometer, measure the outer diameter of the vane pump shaft.

    2. Using a vernier caliper, measure the inner diameter of the vane pump front housing bush.

    3. Calculate the oil clearance.

      Oil clearance = Inner diameter of the bush - Outer diameter of the shaft

      Maximum oil clearance
      0.07 mm (0.00276 in.)

      If the oil clearance is more than the maximum, replace the vane pump assembly.

  2. INSPECT VANE PUMP ROTOR AND VANE PUMP PLATE


    1. A01XG48E14
      Text in Illustration
      *a Thickness

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

      Standard thickness
      1.397 to 1.403 mm (0.0550 to 0.0552 in.)
    2. A01XL8WE02
      Text in Illustration
      *1 Feeler Gauge

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

      Maximum clearance
      0.033 mm (0.0013 in.)

      If the clearance is more than the maximum, replace the vane pump.

  3. INSPECT FLOW CONTROL VALVE


    1. Coat the flow control valve with power steering fluid and check that it falls smoothly into the flow control valve hole under its own weight.

      If the value does not fall smoothly into the hole, replace the vane pump.

    2. A01XIR5E16
      Text in Illustration
      *a Compressed Air

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

      If air leaks, replace the vane pump assembly.

  4. INSPECT FLOW CONTROL VALVE COMPRESSION SPRING


    1. A01XJUF

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

      Minimum free length
      32.3 mm (1.28 in.)

      If the length is less than the minimum, replace the vane pump assembly.

  5. INSPECT PRESSURE PORT UNION


    1. If the union seat in the pressure port union is severely damaged, it may cause fluid leakage. If the union seat is damaged, replace the vane pump assembly.