VANE PUMP (for 2TR-FE) INSPECTION


  1. INSPECT VANE PUMP SHAFT AND BUSHING IN FRONT HOUSING


    1. A01J47VE09

      Using a micrometer, measure the diameter (a) of the shaft with pulley.

    2. Using a caliper gauge, measure the inside diameter (b) of the front vane pump housing.

      Note

      Do not damage the bushing in the front vane pump housing.

    3. Subtract (a) from (b) to calculate the oil clearance.

      Maximum clearance
      0.07 mm (0.0028 in.)

      If it is greater than the maximum, replace the shaft with pulley.

  2. INSPECT VANE PUMP ROTOR AND VANE PUMP PLATE


    1. A01J4J4E01

      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.)

      Note


      • If the clearance is more than the maximum, replace the vane pump plates, vane pump rotor and vane pump cam ring.

      • Refer to the following table to select an appropriate combination of vane pump rotor, vane pump cam ring and vane pump plates.

        Combination of vane pump rotor, vane pump cam ring and vane pump plates
        for 2WD
        Vane Pump Rotor Part No. Vane Pump Cam Ring Part No. Vane Pump Plate Part No.
        44313-06110 44325-0K010 44345-06110
        44313-06120 44325-0K020 44345-06120
        44313-06130 44325-0K030 44345-06130
        44313-06140 44325-0K040 44345-06140
        44313-06150 44325-0K050 44345-06150
        for 4WD and Pre-Runner
        Vane Pump Rotor Part No. Vane Pump Cam Ring Part No. Vane Pump Plate Part No.
        44313-06110 44325-06160 44345-06110
        44313-06120 44325-06170 44345-06120
        44313-06130 44325-06180 44345-06130
        44313-06140 44325-06190 44345-06140
        44313-06150 44325-06200 44345-06150

  3. INSPECT FLOW CONTROL VALVE


    1. A01J3HSE01

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

      Note

      Make sure to use clean and dry air.

    2. A01J514E01

      If there is leakage, replace the flow control valve.

      Note


      • Check the mark on the front vane pump housing and replace the flow control valve with one having the same mark as that of the front vane pump housing.

      • Refer to the following table to select an appropriate combination of front vane pump housing and flow control valve.

        Combination of front vane pump housing and flow control valve
        for 2WD
        Front Vane Pump Housing Mark Flow Control Valve Mark Flow Control Valve Part No.
        A A 44330-0K130
        B B 44330-0K140
        C C 44330-0K150
        D D 44330-0K160
        E E 44330-0K170
        F F 44330-0K180
        for 4WD and Pre-Runner
        Front Vane Pump Housing Mark Flow Control Valve Mark Flow Control Valve Part No.
        A A 44330-0K010
        B B 44330-0K020
        C C 44330-0K030
        D D 44330-0K040
        E E 44330-0K050
        F F 44330-0K060

    3. Coat the flow control valve with power steering fluid.

      Note

      Make sure to use new power steering fluid.

    4. Insert the flow control valve into the flow control valve installation hole of the front vane pump housing, and check that the flow control valve enters smoothly under its own weight.

    5. If the flow control valve does not enter the front vane pump housing smoothly, replace the flow control valve.

  4. INSPECT FLOW CONTROL VALVE COMPRESSION SPRING


    1. A01J7JYE02

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

      Minimum free length
      29.2 mm (1.150 in.)

      If the length is less than the minimum, replace the flow control valve compression spring.

  5. INSPECT PRESSURE PORT UNION


    1. If the union seat in the pressure port union is severely damaged, replace the pressure port union.