TURBOCHARGER INSPECTION

PROCEDURE


  1. INSPECT TURBINE WITH VALVE HOUSING SUB-ASSEMBLY


    1. A01HF5JC02
      *a Center of Exhaust Side Turbine

      Check if the compressor side impeller and exhaust side turbine are damaged or defective.

      Tech Tips

      Wearing on the center of the exhaust side turbine is not a problem.

    2. Move the rod by hand and check whether the waste gate valve is stuck.

    3. A01HGDQ

      Using a straightedge and feeler gauge, measure the warpage of the turbine with valve housing sub-assembly installation surface.

      Standard warpage
      0.20 mm (0.00787 in.)

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

    4. When the waste gate valve is fully closed, using a feeler gauge, measure the clearance between the waste gate valve and the contact surface of the turbine with valve housing sub-assembly waste gate valve port.

      Standard clearance
      0.50 mm (0.0197 in.)

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

  2. INSPECT COMPRESSOR WITH BEARING HOUSING SUB-ASSEMBLY


    1. A01HHKMC02
      B008IFR Oil Leakage Check Area

      Check the areas shown in the illustration for oil leakage.

      OK
      No oil leakage from compressor with bearing housing sub-assembly.

      Note

      Oil stuck to the entrance of the compressor is from oil mixed in the blow-by gas and is not a malfunction.

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

    2. A01HDRZC01
      *a Contact Surface of Air By-pass Valve Assembly

      Check the part of the contact surface of the air by-pass valve assembly shown in the illustration for wear and deposits.

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

      Tech Tips

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

  3. INSPECT TURBINE SHAFT


    1. Check that the turbine shaft rotates smoothly.

    2. Check the turbine shaft in the axial direction.

    3. A01HERN

      Set a dial indicator to the outlet side of the turbine shaft.

    4. Move the turbine shaft in the axial direction and check for looseness.

      Standard
      0.10 mm (0.00394 in.) or less

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