LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2012 >> LS 460 RWD >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System (Service Information) >> FUEL INJECTOR (For Direct Injection) >> Removal >> Removal

FUEL INJECTOR (For Direct Injection): Removal: Removal

  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. DISCHARGE FUEL SYSTEM PRESSURE 
    1. Discharge fuel system pressure. Refer to PRECAUTION .
  3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.
  4. REMOVE FUEL PRESSURE PULSATION DAMPER ASSEMBLY 
    1. Remove the fuel pressure pulsation damper. Refer to REMOVAL .
  5. REMOVE NO. 3 FUEL PIPE SUB-ASSEMBLY  See step  5
  6. REMOVE NO. 2 FUEL PIPE SUB-ASSEMBLY  See step  5
  7. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY 
    Fig 1: Identifying No. 1 Engine Cover Sub-Assembly
    GTY105473Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE NO. 2 ENGINE COVER SUB-ASSEMBLY 
    Fig 2: Identifying No. 2 Engine Cover Sub-Assembly
    GTY105474Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. REMOVE NO. 2 ENGINE COVER SUB-ASSEMBLY LH 
    Fig 3: Identifying No. 2 Engine Cover Sub-Assembly LH
    GTY105475Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. REMOVE NO. 4 FUEL PIPE SUB-ASSEMBLY 
    1. Using a 19 mm union nut wrench, remove the fuel pipe.
      2. Fig 4: View Of Removing Fuel Pipe
      GTY104284Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. REMOVE PCV HOSE 
    1. Remove the hose from the PCV valve.
      Fig 5: Identifying Ventilation Hose
      GTY100333Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. REMOVE NO. 2 FUEL DELIVERY PIPE 
    1. Disconnect the fuel pressure sensor connector.
      Fig 6: Identifying Fuel Pressure Sensor Connector
      GTY105301Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the 4 injector connectors.
      Fig 7: Identifying Injector Connectors
      GTY103062Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 5 bolts and delivery pipe from the cylinder head.
      NOTE:
      • Be extremely careful not to touch or strike the tips of the injectors.
      • Pull and remove the fuel delivery pipe in a straight line without tilting it.
      Fig 8: Identifying Fuel Delivery Pipe Bolts
      GTY103546Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the 4 injector vibration insulators from the cylinder head.
  13. REMOVE FUEL DELIVERY PIPE 
    1. Disconnect the No. 3 fuel hose.
      Fig 9: Identifying No. 3 Fuel Hose
      GTY105311Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the 4 injector connectors.
      Fig 10: Identifying Injector Connectors
      GTY105362Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 5 bolts and delivery pipe from the cylinder head.
      Fig 11: Identifying Delivery Pipe Bolts
      GTY101947Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Be extremely careful not to touch or strike the tips of the injectors.
      • 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.
  14. REMOVE FUEL INJECTOR ASSEMBLY 
    1. Secure the delivery pipe between aluminum plates in a vise and pull out the injector in a straight line.
      Fig 12: Identifying Fuel Injector Assembly
      GTY122814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Pull and remove the injector in a straight line to avoid damage to the seal surface of the delivery pipe O-ring.
      • For reinstallation, attach a tag or label to the injector shaft.
    2. Remove the nozzle holder clamp from the injector.
    3. Remove the O-ring, backup rings and E-ring from the fuel injector.
  15. REMOVE FUEL INJECTOR SEAL 
    1. Using the tips of needle-nose pliers, pinch and pull one of the 2 injector seals at several points to stretch it. Repeat this for the other injector seal.
      Fig 13: Identifying Fuel Injector Seal
      GTY145307Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Excessively pinching the injector seal may damage the groove of the injector.
      • If an injector is dropped or the tips of the injectors are struck, replace it with a new one.
    2. Remove the 2 injector seals from the injector.
  16. REMOVE FUEL PIPE SUPPORT SUB-ASSEMBLY 
    1. Remove the 4 bolts and 2 fuel pipe support sub-assemblies.
      Fig 14: Identifying Bolts And Fuel Pipe Support Sub-Assemblies
      GTY395422Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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.
  17. REMOVE FUEL DELIVERY PIPE PLUG 
    1. 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.
      2. Fig 15: Identifying Fuel Delivery Pipe Plugs And Gaskets
      GTY394901Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
scientia non olet · About LEMON Manuals