Water Hose Joint (For 3Gr-Fse) Removal

Heater & Air Conditioning System. Lexus Gs430, Gs300. Uzs190 Grs190
Air Conditioning. Lexus Gs430, Gs300. Uzs190 Grs190

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  2. REMOVE V-BANK COVER SUB-ASSEMBLY

  3. REMOVE UNION TO CHECK VALVE HOSE (for RHD)

  4. REMOVE ENGINE REAR COVER

  5. DISCONNECT HEATER BLOWER WIRE

  6. REMOVE WATER BY-PASS GLOW PLUG

  7. REMOVE HEATER BLOWER WIRE

  8. DISCONNECT NO. 7 WATER BY-PASS HOSE

  9. DISCONNECT NO. 8 WATER BY-PASS HOSE

  10. REMOVE WATER HOSE JOINT

Water Hose Joint (For 3Gr-Fse) -- 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 V-BANK COVER SUB-ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the 2 nuts and V-bank cover.



3. REMOVE UNION TO CHECK VALVE HOSE (for RHD)


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the hose from the surge tank.



4. REMOVE ENGINE REAR COVER


Lexus Gs430, Gs300. Uzs190 Grs190.Air Conditioning.Air Conditioning System.Water Hose Joint (For 3Gr-Fse) Removal

  1. Remove the 3 clips and engine rear cover.



5. DISCONNECT HEATER BLOWER WIRE


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the 2 grommets.



    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the 2 nuts while using your hands to make sure the terminal directions (angles) of the 2 wires do not change.

  1. Remove the 2 plate washers and disconnect the 2 wires.

    HINT:
    Before removing the 2 plate washers and disconnecting the 2 wires, check the terminal directions (angles) of the 2 wires so that they can be reinstalled in the same direction.

  1. Remove the 2 wave washers.



6. REMOVE WATER BY-PASS GLOW PLUG


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the glow plug.

    HINT:
    Collect the engine coolant in a container.


7. REMOVE HEATER BLOWER WIRE


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the connector.

    HINT:
    If the engine block heater bracket needs to be replaced, disconnect it from the connector.
    NOTICE:
    Be careful not to damage the plastic connector's lock tab.

  1. Remove the 2 bolts and wire.



8. DISCONNECT NO. 7 WATER BY-PASS HOSE


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Using pliers, grip the claws of the clamp and slide the clamp to disconnect the water hose.

    HINT:
    1. Before disconnecting the hose, check the clamp position so that it can be reinstalled in the same position.
    1. Collect the engine coolant in a container.


9. DISCONNECT NO. 8 WATER BY-PASS HOSE


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Using pliers, grip the claws of the clamp and slide the clamp to disconnect the water hose.

    HINT:
    1. Before removing the hose, check the clamp position so that it can be reinstalled in the same position.
    1. Collect the engine coolant in a container.


10. REMOVE WATER HOSE JOINT


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the bolt and hose joint.