Water Pump Removal

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Gr-Fe Cooling. Lexus Gs430, Gs300. Uzs190 Grs190

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  2. REMOVE ENGINE UNDER COVER

  3. REMOVE COOL AIR INTAKE DUCT SEAL

  4. REMOVE NO. 1 AIR CLEANER INLET

  5. REMOVE V-BANK COVER SUB-ASSEMBLY

  6. DRAIN ENGINE COOLANT

  7. REMOVE V-RIBBED BELT

  8. REMOVE WATER PUMP PULLEY

  9. REMOVE NO. 2 ENGINE COVER

  10. REMOVE WATER INLET ASSEMBLY

  11. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY

  12. REMOVE TENSIONER PULLEY

  13. REMOVE WATER PUMP ASSEMBLY

Water Pump -- Removal



1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.


2. REMOVE ENGINE UNDER COVER


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Using a clip remover, remove the 3 clips.

  1. Remove the 10 screws and under cover.



3. REMOVE COOL AIR INTAKE DUCT SEAL


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Using a clip remover, remove the 7 clips and duct seal.



4. REMOVE NO. 1 AIR CLEANER INLET

  1. Remove the bolt and inlet.



5. REMOVE V-BANK COVER SUB-ASSEMBLY

  1. Remove the 2 nuts and cover.



6. DRAIN ENGINE COOLANT
CAUTION:
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 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 Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Cooling.Cooling System.Water Pump Removal



7. REMOVE V-RIBBED BELT


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. While releasing the belt tension by turning the belt tensioner counterclockwise, and remove the V-ribbed belt from the belt tensioner.



    Lexus Gs430, Gs300. Uzs190 Grs190

  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 V-ribbed belt tensioner.



8. REMOVE WATER PUMP PULLEY


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe 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.



9. REMOVE NO. 2 ENGINE COVER


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the 3 nuts and cover.



10. REMOVE WATER INLET ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Cooling.Cooling System.Water Pump Removal

  1. Disconnect the 2 radiator hoses.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Cooling.Cooling System.Water Pump Removal

  1. Disconnect the 5 hoses.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Cooling.Cooling System.Water Pump Removal

  1. Remove the 4 bolts, nut and water inlet.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Cooling.Cooling System.Water Pump Removal

  1. Remove the water inlet housing gasket and water outlet pipe's O-ring.



11. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Cooling.Cooling System.Water Pump Removal

  1. Remove the bolt, cover plate and idler pulley.



12. REMOVE TENSIONER PULLEY

  1. Remove the bolt, cover plate and tensioner pulley (marking: L).

    NOTICE:
    Do not turn the bolt "L" counterclockwise.


13. REMOVE WATER PUMP ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the 16 bolts, water pump and gasket.