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Home >> Lexus >> 2011 >> GS 460 V8-4.6L (1UR-FSE) >> Repair and Diagnosis >> Powertrain Management >> Fuel Delivery and Air Induction >> Fuel Pump >> Service and Repair >> Removal and Replacement >> Fuel Pump (for High Pressure) >> Removal

Removal





1UR-FSE FUEL: FUEL PUMP (for High Pressure): REMOVAL

1. PRECAUTION

CAUTION:
* Do not smoke or work near an open flame when handling 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

(a) Discharge fuel system pressure Service Precautions.

3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected Repair Instruction - Initialization.

4. REMOVE INTAKE MANIFOLD

(a) Remove the intake manifold Removal.

5. REMOVE FUEL PRESSURE PULSATION DAMPER ASSEMBLY

(a) Remove the fuel pressure pulsation damper assembly and No. 1 fuel pipe sub-assembly Removal.

6. REMOVE NO. 3 FUEL PIPE SUB-ASSEMBLY

(a) Remove the high pressure side fuel pump connector.

(b) Fix the union bolt on the fuel pump side in place with a 21 mm wrench. Using a 19 mm union nut wrench, loosen the union nut and disconnect the fuel pipe from the fuel pump.





NOTICE:
Do not loosen the union bolt on the fuel pump side. If the union bolt is accidentally loosened, replace the fuel pump.

(c) Remove the 2 bolts on the delivery pipe side and remove the fuel pipe.





NOTICE:
Do not remove the fuel pipe from the delivery pipe. Only remove the 2 bolts. If the No. 3 fuel pipe is accidentally removed, replace its O-ring, No. 1 backup ring and No. 2 backup ring.

7. REMOVE NO. 2 FUEL PIPE SUB-ASSEMBLY

HINT
The removal procedures are the same as the No. 3 fuel pipe sub-assembly.

8. REMOVE ENGINE COVER SUB-ASSEMBLY (for Bank 1)





(a) Detach the 5 claws and remove the engine cover LH and RH from the fuel pump.

9. REMOVE ENGINE COVER SUB-ASSEMBLY (for Bank 2)

HINT
The removal procedures are the same as the bank 1 side.

10. REMOVE FUEL PUMP ASSEMBLY (for Bank 1)





(a) Remove the 2 nuts, fuel pump and fuel pump insulator.

(b) Disconnect the fuel hose from the fuel pump.





11. REMOVE FUEL PUMP ASSEMBLY (for Bank 2)

HINT
The removal procedures are the same as the bank 1 side.

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