LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2017 >> LS 460 L, RWD >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System - Service Information >> FUEL INJECTOR (Direct Injection) >> Removal [09/2015 - ] >> Procedure

Removal [09/2015 - ]: Procedure

  1. PRECAUTION 
    WARNING:
    • Do not smoke or be near an open flame when working on the fuel system.
    • Keep gasoline away from rubber or leather parts.
    • Do not allow fuel to spray when removing the pipe between the high pressure side fuel pump and the fuel injector. The fuel in the pipe is highly pressurized.
  2. REMOVE FUEL PRESSURE PULSATION DAMPER ASSEMBLY 

    (Refer to REMOVAL [09/2015 - ] )

  3. REMOVE NO. 3 FUEL PIPE SUB-ASSEMBLY 

    See step  2

  4. REMOVE NO. 2 FUEL PIPE SUB-ASSEMBLY 

    See step  2

  5. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY 
    GTY395533Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE NO. 2 ENGINE COVER SUB-ASSEMBLY 
    GTY395534Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE NO. 2 ENGINE COVER SUB-ASSEMBLY LH 
    GTY415979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE NO. 4 FUEL PIPE SUB-ASSEMBLY 
    GTY406972Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Using a 19 mm union nut wrench, remove the No. 4 fuel pipe sub-assembly.
      TEXT IN ILLUSTRATION

      *1 Union Nut Wrench
  9. REMOVE PCV HOSE 
    GTY631074Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the PCV hose from the PCV valve.
  10. REMOVE NO. 2 FUEL DELIVERY PIPE 
    GTY617307Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the fuel pressure sensor connector.
    2. Disconnect the 4 fuel injector connectors.
      GTY617308Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 5 bolts and No. 2 fuel delivery pipe from the cylinder head.
      GTY617309Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Be extremely careful not to touch or strike the tips of the fuel injector assemblies.
      • Pull and remove the No. 2 fuel delivery pipe in a straight line without tilting it.
    4. Remove the 4 injector vibration insulators from the cylinder head.
  11. REMOVE FUEL DELIVERY PIPE 
    1. Disconnect the No. 3 fuel hose.
      GTY629977Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the 4 fuel injector connectors.
      GTY409430Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 5 bolts and fuel delivery pipe from the cylinder head.
      GTY673550Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Be extremely careful not to touch or strike the tips of the fuel injector assemblies.
      • Pull and remove the fuel delivery pipe in a straight line without tilting it.
    4. Remove the 4 injector vibration insulators from the cylinder head.
  12. REMOVE FUEL INJECTOR ASSEMBLY 
    1. Secure the fuel delivery pipe between aluminum plates in a vise and pull out the fuel injector assembly in a straight line.
      GTY650161Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Pull and remove the fuel injector assembly in a straight line to avoid damage to the seal surface of the fuel delivery pipe O-ring.
      • For reinstallation, attach a tag or label to the fuel injector assembly shaft.
    2. Remove the nozzle holder clamp from the fuel injector assembly.
    3. Remove the O-ring, No. 1 backup ring, No. 2 backup ring, No. 3 backup ring and E-ring from the fuel injector assembly.
  13. REMOVE FUEL INJECTOR SEAL 
    1. Using the tips of needle-nose pliers, pinch and pull one of the 2 fuel injector seals at several points to stretch it. Repeat this for the other fuel injector seal.
      GTY145307Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Excessively pinching the fuel injector seal may damage the groove of the fuel injector assembly.
      • If a fuel injector assembly is dropped or the tip of the fuel injector assembly is struck, replace it with a new one.
    2. Remove the 2 fuel injector seals from the fuel injector assembly.
  14. REMOVE FUEL PIPE SUPPORT SUB-ASSEMBLY 
    1. GTY621963Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 4 bolts and 2 fuel pipe support sub-assemblies.

      TEXT IN ILLUSTRATION

      *1 Fuel Delivery Pipe
      *2 No. 2 Fuel Delivery Pipe
    2. Remove the 2 O-rings, 2 No. 1 backup rings, 2 No. 2 backup rings and 2 E-rings from the 2 fuel pipe support sub-assemblies.
  15. REMOVE FUEL DELIVERY PIPE PLUG 
    1. GTY632074Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Using a 6 mm hexagon socket wrench, remove the 2 fuel delivery pipe plugs and 2 gaskets from the fuel delivery pipe and No. 2 fuel delivery pipe.

      TEXT IN ILLUSTRATION

      *1 Fuel Delivery Pipe
      *2 No. 2 Fuel Delivery Pipe
scientia non olet · About LEMON Manuals