TURBOCHARGER (w/ EGR Cooler) INSPECTION


  1. VISUALLY CHECK TURBOCHARGER SUB-ASSEMBLY


    1. Check for deformation and cracks in the turbine wheel on the exhaust side.

      A01DWNTE01
      Text in Illustration
      *A for Waste Gate Type Turbocharger *B for Variable Nozzle Vane Turbocharger
      *1 Turbine Wheel - -

      If the turbine wheel is cracked or deformed, replace the turbocharger sub-assembly.

  2. INSPECT AXIAL PLAY OF TURBINE SHAFT


    1. A01E1W9E01
      Text in Illustration
      *A for Waste Gate Type Turbocharger
      *B for Variable Nozzle Vane Turbocharger

      Using a dial indicator, insert the needle of the dial indicator into the exhaust side of the turbine shaft.

      Note

      Turbocharger sub-assembly and dial indicators are surely fixed when performing measurement.

    2. Move the turbine shaft in an axial direction and measure the axial play of the turbine shaft.

      Maximum Axial Play
      Item Specified Condition
      for Waste Gate Type Turbocharger 0.08 mm (0.0031 in.)
      for Variable Nozzle Vane Turbocharger 0.11 mm (0.00433 in.)

      If the axial play is more than the maximum, replace the turbocharger sub-assembly.

  3. INSPECT RADIAL PLAY OF TURBINE SHAFT (for Waste Gate Type Turbocharger)


    1. A01DW64

      Using a dial indicator, insert the needle of the dial indicator into the oil outlet hole, and set it in the center of the turbine shaft.

    2. Move the turbine shaft in a radial direction and measure the radial play of the turbine shaft.

      Maximum Radial Play
      0.110 mm (0.0043 in.)

      If the radial play is more than the maximum, replace the turbocharger sub-assembly.

  4. CHECK TURBINE SHAFT ROTATION


    1. A01DY6NE01
      Text in Illustration
      *A for Waste Gate Type Turbocharger
      *B for Variable Nozzle Vane Turbocharger

      Rotate the turbine wheel on the exhaust side with your finger and check that it rotates smoothly.

      Tech Tips

      Even if it takes a little effort to rotate the turbine wheel, this is not a problem.

      If the turbine wheel does not rotate smoothly, replace the turbocharger sub-assembly.

  5. INSPECT ACTUATOR AND WASTE GATE VALVE OPERATION (for Waste Gate Type Turbocharger)


    1. Disconnect the actuator hose from the compressor housing.

    2. A01DW44E02

      Using SST, apply pressure to the actuator.

      SST
      09992-00242
      Valve opening pressure
      Specified pressure* (See attached table below)

      Note

      Never apply more than predetermined maximum pressure*to the actuator.

      Tech Tips

      *: For the specifications, refer to the table below.

    3. Check that the actuator push rod moves and that the waste gate valve opens.

      Specifications

      Valve Opening Pressure

      (Gauge Pressure)

      Maximum Pressure

      (Gauge Pressure)

      Rod Stroke

      (Reference)

      108 kPa (1.10 kgf/cm2, 15 psi)

      136 kPa (1.40 kgf/cm2, 20 psi)

      		 2.0 to 4.50 mm (0.0787 to 0.177 in.)

      If the rod does not move, replace the turbocharger sub-assembly.

    4. Reconnect the actuator hose to the compressor housing.