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Inspection [10/2015 - ]: Procedure

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  1. INSPECT TURBINE HOUSING WITH VALVE SUB-ASSEMBLY 
    1. Check if the compressor side impeller and exhaust side turbine are damaged or defective.

      HINT: 

      Wear on the center of the exhaust side turbine is not a malfunction.

      GTY508088Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Center of Exhaust Side Turbine
    2. Move the rod by hand and check whether the waste gate valve is stuck.
      GTY644856Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Waste Gate Valve
      *b Rod
    3. Using a straightedge and feeler gauge, check the turbine housing with valve sub-assembly installation surface for warpage.

      Standard Warpage

      0.20 mm (0.00787 in.)

      If the result is not as specified, replace the turbine housing with valve sub-assembly.

      GTY495998Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Close the waste gate valve and using a feeler gauge, measure the clearance between the waste gate valve and the contact surface of the valve port of the turbine housing with valve sub-assembly waste gate.

      Standard Clearance

      0.50 mm (0.0197 in.)

      If the result is not as specified, replace the turbine housing with valve sub-assembly.

      GTY651862Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Contact Surface of Waste Gate Valve Port
  2. INSPECT COMPRESSOR HOUSING WITH BEARING SUB-ASSEMBLY 
    1. Check the areas shown in the illustration for oil leaks.
      GTY515246Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Oil Leakage Check Area

      OK

      There are no oil leaks from the compressor housing with bearing sub-assembly.

      NOTE:

      Oil on the inlet side of the compressor is from oil in the blow-by gas and is not a malfunction.

      If the result is not as specified, replace the compressor housing with bearing sub-assembly.

    2. Check the area of the contact surface of the intake air control valve (air by-pass valve assembly) shown in the illustration for wear and deposits.

      OK

      Contact surface wear of intake air control valve (air by-pass valve assembly) is 0.50 mm (0.0197 in.) or less.

      HINT: 

      If there are any deposits on the contact surface of the intake air control valve (air by-pass valve assembly), remove them.

      GTY514980Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Contact Surface of Intake Air Control Valve (Air By-pass Valve Assembly)

      If the result is not as specified, replace the compressor housing with bearing sub-assembly.

  3. INSPECT TURBINE SHAFT 
    1. Check that the turbine shaft rotates smoothly.
    2. Check the turbine shaft in the axial direction.
    3. Set a dial indicator to the outlet side of the turbine shaft.
      GTY519317Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Move the turbine shaft in the axial direction and check for play.

      Standard Axial Play

      0.10 mm (0.00394 in.) or less

      If the result is not as specified, replace the compressor housing with bearing sub-assembly.

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