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Home >> Lexus Truck >> 2012 >> GX 460 V8-4.6L (1UR-FE) >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Service and Repair >> Removal and Replacement >> Removal

Removal





1UR-FE ENGINE MECHANICAL: ENGINE ASSEMBLY: REMOVAL

1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM Service and Repair

2. DISCHARGE FUEL SYSTEM PRESSURE Removal

3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:
* w/ Navigation System:
After the engine switch is turned off, the display and navigation module display (navigation system) records various types of memory and settings. As a result, after turning the engine switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) battery terminal.

Waiting Time before Disconnecting Cable from Negative (-) Battery Terminal:





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

4. REMOVE HOOD SUB-ASSEMBLY

(a) Disconnect the washer hose.

(b) Remove the 8 bolts and hood.





NOTICE:
If the hood support is detached from the ball joint, it becomes non-reusable. Therefore, do not detach the hood support from the ball joint unless replacing it.

5. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY

(a) Remove the cowl top ventilator louver sub-assembly Removal.

6. REMOVE LOWER FRONT BUMPER COVER

(a) Remove the clip, 5 bolts and lower front bumper cover.

7. REMOVE NO. 1 ENGINE UNDER COVER SUB-ASSEMBLY

(a) Remove the 4 bolts.

(b) Unhook the No. 1 engine under cover from the vehicle body as shown in the illustration.





8. REMOVE TRANSMISSION UNDER COVER

(a) Remove the 2 bolts and transmission under cover.

9. REMOVE REAR ENGINE UNDER COVER ASSEMBLY

(a) Remove the 4 bolts and rear engine under cover.

10. REMOVE FRONT FENDER APRON SEAL LH

(a) Remove the 7 clips and front fender apron seal LH.

11. REMOVE FRONT FENDER APRON SEAL RH

(a) Remove the 4 clips and front fender apron seal RH.

12. REMOVE FRONT NO. 1 FENDER APRON TO FRAME SEAL LH

(a) Remove the 5 clips and front No. 1 fender apron to frame seal LH.

13. REMOVE FRONT NO. 1 FENDER APRON TO FRAME SEAL RH

(a) Remove the 5 clips and front No. 1 fender apron to frame seal RH.

14. REMOVE UPPER RADIATOR SUPPORT SEAL

(a) Remove the 13 clips and upper radiator support seal.





15. REMOVE V-BANK COVER SUB-ASSEMBLY

(a) Raise the front of the V-bank cover to detach the 2 pins. Then detach the 2 V-bank cover hooks from the No. 1 V-bank cover bracket and remove the V-bank cover.





Text in Illustration





16. REMOVE ENGINE ROOM SIDE COVER LH

(a) Remove the 4 clips and engine room side cover LH.





17. REMOVE ENGINE ROOM SIDE COVER

(a) Remove the 4 clips and engine room side cover.





18. DRAIN ENGINE OIL Replacement

19. DRAIN ENGINE COOLANT Service and Repair

20. REMOVE BATTERY

(a) Remove the nut and disconnect the No. 2 engine wire.





(b) Remove the 2 nuts and battery hold down clamp.

(c) Remove the battery.

21. REMOVE BATTERY TRAY

22. REMOVE FRONT BUMPER COVER

(a) Remove the front bumper cover Removal.

23. REMOVE AIR CLEANER CAP AND HOSE

(a) Disconnect the mass air flow meter connector, No. 1 air hose and No. 2 ventilation hose and detach the wire harness clamp.





(b) Loosen the hose clamp.

(c) Detach the 4 clamps and remove the air cleaner cap and hose.

24. REMOVE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

25. REMOVE AIR CLEANER CASE SUB-ASSEMBLY

(a) Remove the 3 bolts and air cleaner case.





26. REMOVE RADIATOR SIDE DEFLECTOR LH Removal

27. REMOVE RADIATOR SIDE DEFLECTOR RH Removal

28. REMOVE RADIATOR RESERVOIR ASSEMBLY Removal

29. REMOVE NO. 1 RADIATOR HOSE Removal

30. REMOVE FAN SHROUD Removal

31. REMOVE NO. 2 RADIATOR HOSE Removal

32. DISCONNECT OIL COOLER ACCESSORY ASSEMBLY Removal

33. REMOVE RADIATOR ASSEMBLY Removal

34. REMOVE WATER PIPE AND HOSE SUB-ASSEMBLY (for Single Air Conditioning System)

(a) Detach the clamp.





(b) Disconnect the 4 water hoses and remove the 2 nuts and the water pipe and hose.

35. REMOVE WATER PIPE AND HOSE SUB-ASSEMBLY (for Dual Air Conditioning System)

(a) Detach the clamp.





(b) Disconnect the 6 water hoses and remove the 2 nuts and the water pipe and hose.

36. DISCONNECT NO. 12 WATER BY-PASS HOSE Removal

37. DISCONNECT NO. 13 WATER BY-PASS HOSE Removal

38. REMOVE EGR VALVE ASSEMBLY Removal

39. REMOVE EGR VALVE BRACKET Removal

40. DISCONNECT NO. 4 WATER BY-PASS PIPE Removal

41. REMOVE VENTILATION HOSE ASSEMBLY Removal

42. REMOVE AIR TUBE SUB-ASSEMBLY Removal

43. REMOVE INTAKE MANIFOLD Removal

44. DISCONNECT NO. 1 OIL RESERVOIR TO PUMP HOSE Removal

45. DISCONNECT PRESSURE FEED TUBE Removal

46. REMOVE VANE PUMP ASSEMBLY Removal

47. REMOVE GENERATOR ASSEMBLY Removal

48. REMOVE DISCHARGE HOSE SUB-ASSEMBLY

(a) Remove the 3 bolts and discharge hose.





(b) Remove the 2 O-rings from the discharge hose.

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

49. REMOVE SUCTION HOSE SUB-ASSEMBLY

(a) Remove the 2 bolts, nut and suction hose.





(b) Remove the 2 O-rings from the suction hose.

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

50. REMOVE COOLER COMPRESSOR ASSEMBLY Removal

51. REMOVE EXHAUST PIPE STOPPER BRACKET Removal

52. REMOVE FRONT NO. 2 EXHAUST PIPE ASSEMBLY Removal

53. REMOVE FRONT EXHAUST PIPE ASSEMBLY Removal

54. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE Removal

55. REMOVE NO. 1 EGR PIPE SUB-ASSEMBLY Removal

56. REMOVE NO. 2 MANIFOLD STAY Removal

57. REMOVE MANIFOLD STAY Removal

58. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR Removal

59. REMOVE EXHAUST MANIFOLD ASSEMBLY LH Removal

60. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR Removal

61. REMOVE EXHAUST MANIFOLD ASSEMBLY RH Removal

62. REMOVE STARTER COVER Removal

63. REMOVE STARTER ASSEMBLY Removal

64. REMOVE FLYWHEEL HOUSING SIDE COVER Removal

65. DISCONNECT FUEL HOSE AND NO. 2 FUEL TUBE SUB-ASSEMBLY

(a) Remove the 2 fuel pipe clamps from the fuel tube connector.





Text in Illustration





(b) Disconnect the fuel hose and No. 2 fuel tube Service Precautions.

66. DISCONNECT ENGINE WIRE

(a) for Engine Room LH Side:

(1) Remove the bolt and disconnect the ground wire.





(2) Remove the nut from the engine room relay block.





Text in Illustration





(3) Using a small screwdriver, detach the 2 claws and disconnect the engine wire from the engine room relay block.

(4) Disconnect the connector.

(5) Remove the 2 bolts and disconnect the No. 2 engine wire and ground wire.





Text in Illustration





(6) Detach the wire harness clamp and disconnect the No. 2 engine wire.

(b) for Engine Room RH Side:

(1) Remove the bolt and disconnect the ground wire.





Text in Illustration





(2) Disconnect the connector, detach the 3 clamps and disconnect the engine wire.

(c) Remove the lower instrument panel Removal.

(d) Disconnect the ECM connector.

(1) Detach the clamp and disconnect the 6 connectors.





(2) Detach the grommet from the wire harness support.





(3) Detach the 4 claws to remove the wire harness support from the vehicle, and then pull out the ECM connector to remove it from the vehicle.





67. DISCONNECT OIL COOLER TUBE SUB-ASSEMBLY

(a) Remove the bolt and disconnect the oil cooler tube.





68. REMOVE FRONT PROPELLER SHAFT ASSEMBLY

(a) Remove the front propeller shaft assembly Removal.

69. REMOVE PROPELLER SHAFT ASSEMBLY

(a) Remove the propeller shaft assembly Removal.

70. REMOVE DRIVE PLATE AND TORQUE CONVERTER CLUTCH SETTING BOLT Removal

71. REMOVE AUTOMATIC TRANSMISSION ASSEMBLY

(a) Remove the automatic transmission assembly Removal.

72. REMOVE REAR NO. 1 ENGINE MOUNTING INSULATOR

HINT
Perform this procedure only when replacement of the engine mounting insulator is necessary.

(a) Remove the bolt and rear engine mounting heat insulator.





(b) Remove the 4 bolts and rear No. 1 engine mounting insulator from the transfer.

73. REMOVE DRIVE PLATE AND RING GEAR SUB-ASSEMBLY

(a) Using SST, hold the crankshaft.

SST : 09213-70011

09213-70020

SST : 09330-00021





(b) Remove the 10 bolts, the rear drive plate spacer, the drive plate and ring gear, and the crankshaft angle sensor rotor.





74. INSTALL ENGINE HANGER

(a) Install 2 engine hangers with 2 bolts as shown in the illustration.

Torque : 43 Nm (438 kgf-cm, 32 ft-lbf)





HINT






75. REMOVE ENGINE ASSEMBLY

(a) Attach an engine sling device and hang the engine with a chain block.





Text in Illustration





NOTICE:
When hanging the engine, make sure to hang the engine with the angle of the sling device at 50° or less. If not, the engine or engine hangers may be damaged.

(b) Remove the 2 nuts and 4 bolts from the front engine mounting insulator LH and RH.





Text in Illustration





(c) Lift the engine out of the vehicle carefully.

NOTICE:
Make sure the engine is clear of all wiring, hoses and cables.

(d) Remove the front engine mounting insulator LH and RH.

(e) Place the engine onto a workbench.

76. REMOVE NO. 1 WATER BY-PASS PIPE

(a) Disconnect the 2 water hoses and remove the No. 1 water by-pass pipe.





77. INSTALL ENGINE STAND

(a) Install the engine to an engine stand with bolts.
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