Water Pump Removal

Engine. Lexus Is250, Is220D. Gse20 Ale20
4Gr-Fse Cooling. Lexus Is250, Is220D. Gse20 Ale20

  1. REMOVE COOL AIR INTAKE DUCT SEAL

  2. REMOVE V-BANK COVER SUB-ASSEMBLY

  3. REMOVE NO. 1 INLET AIR CLEANER

  4. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM

  5. REMOVE V-RIBBED BELT

  6. REMOVE ENGINE UNDER COVER

  7. REMOVE REAR ENGINE UNDER COVER LH

  8. DRAIN ENGINE COOLANT

  9. DRAIN ENGINE OIL

  10. REMOVE NO. 1 COOLER REFRIGERANT SUCTION HOSE

  11. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY

  12. REMOVE COMPRESSOR AND MAGNETIC CLUTCH

  13. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY

  14. DISCONNECT RADIATOR HOSE

  15. REMOVE NO. 1 ENGINE COVER

  16. REMOVE INJECTOR DRIVER

  17. REMOVE NO. 2 ENGINE COVER

  18. REMOVE WATER PUMP PULLEY

  19. REMOVE WATER INLET

  20. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY

  21. REMOVE WATER PUMP ASSEMBLY

Water Pump -- Removal



1. REMOVE COOL AIR INTAKE DUCT SEAL


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 11 clips and intake duct seal.



2. REMOVE V-BANK COVER SUB-ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20
  1. Raise the V-bank cover to disengage the clip on the rear of the cover. Raise the cover again to disengage the 2 clips on the front of the cover and remove the cover.

    NOTICE:
    Attempting to disengage both front and rear clips at the same time may cause the cover to break.


3. REMOVE NO. 1 INLET AIR CLEANER


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the bolt, clip and inlet air cleaner.



4. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM
  1. Start up the engine.

  1. Turn the A/C switch on.

  1. Operate the cooler compressor at an engine speed of approximately 1,000 rpm for 5 to 6 minutes to circulate the refrigerant and collect the compressor oil remaining in each component into the cooler compressor.

  1. Stop the engine.

  1. Using SST, discharge the refrigerant gas.

    SST
    07110-58060(07117-58060,07117-58070,07117-58080,07117-58090,07117-78050,07117-88060,07117-88070,07117-88080)


5. REMOVE V-RIBBED BELT


    Lexus Is250, Is220D. Gse20 Ale20
  1. While releasing the belt tension by turning the belt tensioner counterclockwise, and remove the V-ribbed belt from the belt tensioner.



    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Cooling.Cooling System.Water Pump  Removal
  1. While turning the belt tensioner counterclockwise, align with its holes, and then insert the 5 mm bi-hexagon wrench into the holes to fix the belt tensioner.



6. REMOVE ENGINE UNDER COVER


7. REMOVE REAR ENGINE UNDER COVER LH


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the bolt and engine under cover LH.



8. DRAIN ENGINE COOLANT
NOTICE:
Do not remove the radiator cap while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.
  1. Remove the radiator cap and reservoir tank cap.



  1. Loosen the radiator drain cock plug and 2 cylinder block drain cock plugs. Then drain the coolant.

    HINT:
    Collect the coolant in a container and dispose of it according to the regulations in your area.


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Cooling.Cooling System.Water Pump  Removal



9. DRAIN ENGINE OIL
  1. Remove the drain plug.

  1. Install a new gasket and the drain plug.

    Torque:
    40 N*m{408 kgf*cm, 30 ft.*lbf}


10. REMOVE NO. 1 COOLER REFRIGERANT SUCTION HOSE


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the bolt and disconnect the No. 1 cooler refrigerant suction hose from the compressor.

  1. Remove the O-ring from the cooler refrigerant suction hose.

    NOTICE:
    Seal the openings of the disconnected parts using vinyl tape to prevent moisture and foreign matter from entering.


11. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the bolt and disconnect the discharge hose from the compressor.

  1. Remove the O-ring from the discharge hose sub-assembly.

    NOTICE:
    Seal the openings of the disconnected parts using vinyl tape to prevent moisture and foreign matter from entering.


12. REMOVE COMPRESSOR AND MAGNETIC CLUTCH


    Lexus Is250, Is220D. Gse20 Ale20
  1. Disconnect the magnetic clutch connector.

  1. Remove the 3 bolts and nut.

  1. Remove the compressor and magnetic clutch.



13. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 5 bolts, then remove the V-ribbed belt tensioner assembly.)



14. DISCONNECT RADIATOR HOSE


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Cooling.Cooling System.Water Pump  Removal
  1. Disengage the 2 clamps and disconnect the radiator inlet hose and radiator outlet hose.



15. REMOVE NO. 1 ENGINE COVER


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 3 clips, then remove the No. 1 engine cover.



16. REMOVE INJECTOR DRIVER


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the bolt, 2 nuts and injector driver.



17. REMOVE NO. 2 ENGINE COVER


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 3 clips and clamp, then remove the No. 2 engine cover.



18. REMOVE WATER PUMP PULLEY


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Cooling.Cooling System.Water Pump  Removal
  1. Using SST, hold the water pump pulley.

    SST
    09960-10010(09962-01000,09963-00700)
  1. Remove the 4 bolts and water pump pulley.



19. REMOVE WATER INLET


    Lexus Is250, Is220D. Gse20 Ale20
  1. Disconnect the 5 hoses.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 4 bolts, nut and water inlet.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the water inlet housing gasket and water outlet pipe O-ring.



20. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the bolt, idler pulley cover plate No.2 and No.2 idler pulley sub-assembly.



21. REMOVE WATER PUMP ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 16 bolts, water pump assembly and water pump gasket.