Vane Pump (For Kd Series Engine) Inspection

Steering. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
Power Assist Systems. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

  1. INSPECT CLEARANCE BETWEEN VANE PUMP ROTOR AND VANE PUMP PLATE

  2. INSPECT FLOW CONTROL VALVE

  3. INSPECT FLOW CONTROL VALVE COMPRESSION SPRING

  4. INSPECT PRESSURE PORT UNION

Vane Pump (For Kd Series Engine) -- Inspection



1. INSPECT CLEARANCE BETWEEN VANE PUMP ROTOR AND VANE PUMP PLATE


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Power Assist Systems.Power Steering System.Vane Pump (For Kd Series Engine) Inspection

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

    Text in Illustration
    *1
    		Feeler Gauge
    Maximum clearance:
    0.03 mm (0.00118 in.)
    NOTICE:
    1. If the clearance is more than the maximum, replace the vane pump plates, vane pump rotor and vane pump cam ring.
    2. 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:

      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


2. INSPECT FLOW CONTROL VALVE


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Power Assist Systems.Power Steering System.Vane Pump (For Kd Series Engine) Inspection
    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Power Assist Systems.Power Steering System.Vane Pump (For Kd Series Engine) Inspection

  1. Check the flow control valve for leakage. Close one of the holes and apply compressed air at 392 to 490 kPa (4.00 to 4.99 kgf/cm2, 56.9 to 71.0 psi) to the hole on the opposite side. Confirm that the air does not flow out of the end hole.

    Text in Illustration
    *a
    		Compressed Air
    NOTICE:
    Make sure to use clean and dry air.
    If there is leakage, replace the flow control valve.
    Text in Illustration
    *1
    		Mark
    NOTICE:
    1. 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.
    2. 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:

      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

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

    NOTICE:
    Make sure to use new power steering fluid.

  1. 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.
    If the flow control valve does not enter the front vane pump housing smoothly, replace the flow control valve.



3. INSPECT FLOW CONTROL VALVE COMPRESSION SPRING


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Power Assist Systems.Power Steering System.Vane Pump (For Kd Series Engine) Inspection

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

    Text in Illustration
    *1
    		Vernier Caliper
    Minimum free length:
    29.2 mm (1.15 in.)
    If the length is less than the minimum, replace the flow control valve compression spring.


4. INSPECT PRESSURE PORT UNION

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