VANE PUMP(for 3UR-FE) INSPECTION

PROCEDURE


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


    1. A01WWUDE12

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

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

    3. Calculate the oil clearance.

      Oil clearance = Inner diameter of the bush [b] - Outer diameter of the shaft [a]

      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. A01WPAPE16
      *1 Thickness

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

      Standard thickness
      1.405 to 1.411 mm (0.0553 to 0.0556 in.)

      If the thickness is not as specified, replace the vane pump assembly.

    2. A01WSKCE07
      *1 Feeler Gauge

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

      Maximum clearance
      0.03 mm (0.00118 in.)

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

  3. INSPECT TOTAL PRELOAD


    1. Check that the pump rotates smoothly without abnormal noise.

    2. Temporarily install a service bolt.

      Recommended service bolt
      Thread diameter
      10 mm (0.394 in.)
      Thread pitch
      1.25 mm (0.0492 in.)
      Bolt length
      50 mm (1.97 in.)
    3. A01WW9OE26
      *1 Service Bolt

      Using a torque wrench, measure the pump rotating torque.

      Standard rotating torque
      0.3 N*m (3 kgf*cm, 2 in.*lbf) or less

      If the rotating torque is not as specified, check the vane pump housing oil seal.