Engine. Lexus Gs430, Gs300. Uzs190 Grs190
DISCHARGE FUEL SYSTEM PRESSURE
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
REMOVE FRONT WHEEL
DRAIN ENGINE OIL
DRAIN ENGINE COOLANT
DRAIN AUTOMATIC TRANSMISSION FLUID
REMOVE COOL AIR INTAKE DUCT SEAL
REMOVE ENGINE ROOM COVER SIDE RH
REMOVE ENGINE ROOM SIDE COVER LH
REMOVE V-BANK COVER SUB-ASSEMBLY
REMOVE ENGINE UNDER COVER
REMOVE NO. 2 ENGINE UNDER COVER
REMOVE FRONT EXHAUST PIPE ASSEMBLY
REMOVE PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY
REMOVE NO. 1 AIR CLEANER INLET
REMOVE AIR CLEANER ASSEMBLY WITH HOSE
DISCONNECT RADIATOR HOSE INLET
DISCONNECT RADIATOR HOSE OUTLET
DISCONNECT RADIATOR RESERVE TANK HOSE
DISCONNECT UNION TO CHECK VALVE HOSE
DISCONNECT HEATER WATER INLET HOSE A
DISCONNECT HEATER WATER OUTLET HOSE A
DISCONNECT FUEL MAIN TUBE
REMOVE ECM COVER
DISCONNECT ENGINE WIRE
REMOVE V-RIBBED BELT
DISCONNECT COMPRESSOR WITH PULLEY ASSEMBLY
DISCONNECT HEIGHT CONTROL SENSOR LINK
REMOVE FRONT SUSPENSION MEMBER PROTECTOR LOWER
REMOVE TIE ROD ASSEMBLY RH
REMOVE TIE ROD ASSEMBLY LH
REMOVE FRONT SHOCK ABSORBER ASSEMBLY RH
REMOVE FRONT SHOCK ABSORBER ASSEMBLY LH
REMOVE FRONT LOWER BALL JOINT BOLT RH
REMOVE FRONT LOWER BALL JOINT BOLT LH
REMOVE NO. 2 STEERING INTERMEDIATE SHAFT ASSEMBLY
DISCONNECT POWER STEERING LINK WIRE HARNESS
DISCONNECT FLOOR SHIFT GEAR SHIFTING ROD SUB-ASSEMBLY
REMOVE ENGINE AND TRANSMISSION ASSEMBLY
REMOVE AUTOMATIC TRANSMISSION ASSEMBLY
REMOVE DRIVE PLATE AND RING GEAR SUB-ASSEMBLY
REMOVE FRONT ENGINE MOUNTING INSULATOR
FIX ENGINE ON ENGINE STAND
REMOVE ENGINE WIRE
REMOVE OIL DIPSTICK GUIDE SUB-ASSEMBLY
REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY RH
INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY RH
REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH
INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY LH
REMOVE GENERATOR ASSEMBLY
REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY
REMOVE V-RIBBED BELT TENSIONER ASSEMBLY
REMOVE WATER PUMP PULLEY
REMOVE INJECTOR DRIVER
DISCONNECT NO. 1 WATER BY-PASS HOSE
DISCONNECT NO. 2 WATER BY-PASS HOSE
REMOVE REAR ENGINE COVER SUB-ASSEMBLY
REMOVE NO. 3 WATER BY-PASS PIPE
REMOVE NO. 4 WATER BY-PASS PIPE
REMOVE INTAKE AIR SURGE TANK SUB-ASSEMBLY
INSPECT INTAKE AIR SURGE TANK SUB-ASSEMBLY
REMOVE INTAKE MANIFOLD
INSPECT INTAKE MANIFOLD
REMOVE FUEL PRESSURE PULSATION DAMPER ASSEMBLY
REMOVE NO. 1 FUEL PIPE SUB-ASSEMBLY
REMOVE NO. 2 FUEL PIPE SUB-ASSEMBLY
REMOVE HIGH PRESSURE SIDE FUEL PUMP
REMOVE NO. 2 FUEL DELIVERY PIPE SUB-ASSEMBLY
REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY
REMOVE FUEL INJECTOR ASSEMBLY
REMOVE KNOCK SENSOR
REMOVE ENGINE MOUNTING BRACKET RH
REMOVE ENGINE MOUNTING BRACKET LH
REMOVE OIL FILLER CAP SUB-ASSEMBLY
REMOVE IGNITION COIL ASSEMBLY
REMOVE ENGINE OIL LEVEL SENSOR
REMOVE OIL PRESSURE SWITCH ASSEMBLY
REMOVE ENGINE COOLANT TEMPERATURE SENSOR
Engine Assembly -- Removal |
1. DISCHARGE FUEL SYSTEM PRESSURE |
- CAUTION:
- Do not disconnect any part of the fuel system until you have discharged the fuel system pressure.
- Even after discharging the fuel pressure, place a shop rag over fittings as you separate them to reduce the risk of fuel spray on yourself or in the engine compartment.
Disconnect the cable from the negative (-) battery terminal.
- NOTICE:
- Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
Disconnect the fuel pump connector.
Connect the cable to the negative (-) battery terminal.
Start the engine. After the engine has stopped on its own, turn the engine switch off.
- HINT:
- DTC P0171/P0172 (system too lean) may be set.
Crank the engine again, then check that the engine does not start.
Loosen the fuel tank cap, then discharge the pressure in the fuel tank completely.
Connect the fuel pump connector.
2. 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.
Remove the drain plug.
- 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.
Remove the radiator cap and reservoir cap.
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.
6. DRAIN AUTOMATIC TRANSMISSION FLUID |
7. REMOVE COOL AIR INTAKE DUCT SEAL |
Remove the 7 clips and intake duct seal.
8. REMOVE ENGINE ROOM COVER SIDE RH |
Remove the nut, 2 clips and side cover.
9. REMOVE ENGINE ROOM SIDE COVER LH |
Remove the 3 clips and side cover.
10. REMOVE V-BANK COVER SUB-ASSEMBLY |
Remove the 2 nuts and V-bank cover.
11. REMOVE ENGINE UNDER COVER |
Using a clip remover, remove the 3 clips.
Remove the 10 screws and under cover.
12. REMOVE NO. 2 ENGINE UNDER COVER |
Remove the 4 screws, 2 grommets, 2 spacers and under cover.
13. REMOVE FRONT EXHAUST PIPE ASSEMBLY |
Remove the 4 bolts and 4 nuts.
Disconnect the exhaust pipe front ends from the exhaust manifold and remove the 2 gaskets.
Remove the 2 bolts, 2 compression springs, exhaust pipe and gasket.
14. REMOVE PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY |
Put matchmarks on both flanges.
Remove the 4 nuts, bolts and washers.
- HINT:
- If the flange connection is hard to separate, temporarily tighten one nut only and evenly tap the flange with a brass bar and hammer to separate the propeller shaft assembly from the differential companion flange.
Remove the 2 bolts, 2 center support bearing washers and center support bearing.
Insert SST in the transmission to prevent oil leakage.
- SST
- 09325-40010
- NOTICE:
- Be careful not to damage the oil seal.
15. REMOVE NO. 1 AIR CLEANER INLET |
Remove the bolt and air cleaner inlet.
16. REMOVE AIR CLEANER ASSEMBLY WITH HOSE |
Disconnect the ventilation hose from the cylinder head.
Disconnect the MAF meter connector.
Disconnect the clamp from the air cleaner.
Disconnect the VSV (for EVAP).
Loosen the hose clamp.
Remove the 3 bolts and air cleaner case.
17. DISCONNECT RADIATOR HOSE INLET |
Disconnect the hose from the water inlet with thermostat and radiator tank upper.
18. DISCONNECT RADIATOR HOSE OUTLET |
Disconnect the hose from the water inlet and radiator tank lower.
19. DISCONNECT RADIATOR RESERVE TANK HOSE |
20. DISCONNECT UNION TO CHECK VALVE HOSE |
Remove the clamp and disconnect the union to check valve hose.
21. DISCONNECT HEATER WATER INLET HOSE A |
Disconnect the inlet hose.
22. DISCONNECT HEATER WATER OUTLET HOSE A |
Disconnect the outlet hose.
23. DISCONNECT FUEL MAIN TUBE |
Remove the fuel pipe clamp.
Pinch and pull the fuel tube's connector to disconnect it from the fuel main pipe.
- NOTICE:
- Check for foreign matter in the fuel tube around the fuel tube's connector. Clean it if necessary. Foreign matter can affect the O-ring's ability to seal the connector and fuel main pipe.
- Do not use any tools to separate the connector and pipe.
- Do not forcefully bend or twist the hose.
- Keep the connector and pipe free from foreign matter.
- If the connector and pipe are stuck together, pinch the connector and turn it carefully to disconnect it.
- Put the connector in a plastic bag to prevent damage and contamination.
Remove the 3 bolts and ECM cover.
25. DISCONNECT ENGINE WIRE |
Disconnect the ECM connectors.
Using a screwdriver, disconnect the connector holder.
Disconnect the 6 ECM connectors.
Remove the nut and disconnect the battery positive (+) cable.
Remove the engine room No. 1 relay block cover.
Remove the nut and disconnect the wire from the engine room No. 1 junction block.
Remove the bolt and disconnect the ground cable.
While releasing the belt tension by turning the belt tensioner counterclockwise, and remove the V-ribbed belt from the belt tensioner.
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.
27. DISCONNECT COMPRESSOR WITH PULLEY ASSEMBLY |
Disconnect the magnetic clutch connector.
Remove the 3 bolts and nut.
Using an E8 "torx" socket, remove the stud bolt and compressor.
- HINT:
- It is not necessary to completely remove the compressor. With the hoses connected to the compressor, hang the compressor on the vehicle body with a rope.
28. DISCONNECT HEIGHT CONTROL SENSOR LINK |
Remove the nut and disconnect the height control sensor link.
29. REMOVE FRONT SUSPENSION MEMBER PROTECTOR LOWER |
Remove the 4 bolts and protector.
30. REMOVE TIE ROD ASSEMBLY RH |
- SST
- 09628-00011
- HINT:
- Perform the same procedure as for the LH side.
31. REMOVE TIE ROD ASSEMBLY LH |
Remove the clip and the castle nut.
Using SST, separate the tie rod end LH from the steering knuckle.
- SST
- 09628-00011
- NOTICE:
- Hang SST with a string, etc. to prevent it from falling.
- Do not damage the front disc brake dust cover.
- Do not damage the ball joint dust cover.
- Do not damage the steering knuckle.
32. REMOVE FRONT SHOCK ABSORBER ASSEMBLY RH |
Support the front suspension lower arm with a jack. Be sure to place a wooden block between the jack and the front suspension lower arm to avoid damage.
Loosen the bolt while holding the nut. Separate the lower part of the front shock absorber from the front suspension lower arm.
- NOTICE:
- Do not remove the nut.
Loosen the lock nut of the front shock absorber.
- NOTICE:
- Do not remove the lock nut.
- Loosen the lock nut only when disassembling the front shock absorber with coil spring.
Remove the 3 nuts from the upper side of the front suspension support.
Slowly lower the jack. Remove the bolt and nut from the lower side to remove the front shock absorber with coil spring.
33. REMOVE FRONT SHOCK ABSORBER ASSEMBLY LH |
Support the front suspension lower arm with a jack. Be sure to place a wooden block between the jack and the front suspension lower arm to avoid damage.
Loosen the bolt while holding the nut. Separate the lower part of the front shock absorber from the front suspension lower arm.
- NOTICE:
- Do not remove the nut.
Loosen the lock nut of the front shock absorber.
- NOTICE:
- Do not remove the lock nut.
- Loosen the lock nut only when disassembling the front shock absorber with coil spring.
Remove the 3 nuts from the upper side of the front suspension support.
Slowly lower the jack. Remove the bolt and nut from the lower side to remove the front shock absorber with coil spring.
34. REMOVE FRONT LOWER BALL JOINT BOLT RH |
35. REMOVE FRONT LOWER BALL JOINT BOLT LH |
36. REMOVE NO. 2 STEERING INTERMEDIATE SHAFT ASSEMBLY |
Fix the steering wheel with the seat belt in order to prevent rotation.
- HINT:
- This operation is useful to prevent damage to the spiral cable.
Loosen bolt (A) and remove bolt (B), then slide the steering intermediate shaft assembly No.2.
- HINT:
- Do not remove bolt (A).
- Do not disconnect the steering intermediate shaft assembly No.2 from the power steering link assembly.
Put matchmarks on the steering intermediate shaft assembly No.2 and the power steering link assembly.
Separate the intermediate shaft assembly No.2 from the power steering link assembly.
37. DISCONNECT POWER STEERING LINK WIRE HARNESS |
Remove bolt (A) to disconnect the earth wire from the bracket.
Remove the 2 clamps to disconnect the wire harness from the bracket.
Disconnect 2 connectors (C) and (D) from the power steering link assembly.
Release the lock of connector (E) and disconnect connector (E) from the power steering link assembly.
Remove bolt (B) and the power steering earth wire from the power steering link assembly.
Remove the 2 bolts, 2 washers, 2 nuts, and the power steering link assembly from the front suspension cross member.
38. DISCONNECT FLOOR SHIFT GEAR SHIFTING ROD SUB-ASSEMBLY |
Set the shift lever to the neutral position.
Remove the nut, and separate the floor shift gear shifting rod sub-assembly.
39. REMOVE ENGINE AND TRANSMISSION ASSEMBLY |
Set the engine lifter.
Remove the 4 bolts, then separate the engine rear mounting member.
Remove the 12 bolts shown in the illustration.
Operate the engine lifter, then slowly remove the engine from the vehicle.
- NOTICE:
- Make sure the engine is clear of all wiring and hoses.
Install the No. 1 and No. 2 engine hangers with the 4 bolts as shown in the illustration.
Part No.:No. 1 Engine hanger
| 12281 - 31070
|
No. 2 Engine hanger
| 12282 - 31070
|
Bolts
| 91671 - 10825
|
- Torque:
- 33 N*m{336 kgf*cm, 24 ft.*lbf}
Attach an engine sling device and hang the engine with a chain block.
40. REMOVE AUTOMATIC TRANSMISSION ASSEMBLY |
Remove the 9 bolts and automatic transmission assembly.
41. REMOVE DRIVE PLATE AND RING GEAR SUB-ASSEMBLY |
Using SST, hold the crankshaft.
- SST
- 09213-70011(09213-70020)
09330-00021
Remove the 8 bolts, front spacer, drive plate and rear spacer.
42. REMOVE FRONT ENGINE MOUNTING INSULATOR |
Remove the 2 bolts, then remove the front suspension crossmember sub-assembly from the engine.
43. FIX ENGINE ON ENGINE STAND |
Fix the engine onto a engine stand with the bolts.
Remove the engine wire from the engine.
45. REMOVE OIL DIPSTICK GUIDE SUB-ASSEMBLY |
Remove the oil level gauge.
Remove the 2 bolts, then remove the No. 1 and No. 2 oil dipstick guide.
Remove the O-ring from the oil dipstick guide.
46. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY RH |
Disconnect the heated oxygen sensor connector.
Remove the 6 nuts, exhaust manifold and gasket.
47. INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY RH |
Using a precision straightedge and feeler gauge, measure the surface contacting the cylinder head for warpage.
- Maximum warpage:
- 0.7 mm (0.028 in.)
- HINT:
- The maximum allowable warpage of each installation surface is 0.3 mm (0.012 in.).
If the warpage is greater than the maximum, replace the manifold.
48. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH |
Disconnect the heated oxygen sensor connector.
Remove the 6 nuts, exhaust manifold and gasket.
49. INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY LH |
Using a precision straightedge and feeler gauge, measure the surface contacting the cylinder head for warpage.
- Maximum warpage:
- 0.7 mm (0.028 in.)
- HINT:
- The maximum allowable warpage of each installation surface is 0.3 mm (0.012 in.).
If the warpage is greater than the maximum, replace the manifold.
50. REMOVE GENERATOR ASSEMBLY |
Detach the clamp, and remove the bolt from the generator.
Disconnect the generator connector.
Detach the rubber cap, and then remove the nut and battery cable.
Remove the nut, bolt and generator bracket.
Remove the 2 bolts and generator.
51. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY |
Remove the bolt, plate and idler pulley.
52. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY |
Remove the 5 bolts, then remove the V-ribbed belt tensioner assembly.
53. REMOVE WATER PUMP PULLEY |
Using SST, hold the water pump pulley.
- SST
- 09960-10010(09962-01000,09963-00700)
Remove the 4 bolts and water pump pulley.
54. REMOVE INJECTOR DRIVER |
Remove the bolt, 2 nuts and injector driver.
55. DISCONNECT NO. 1 WATER BY-PASS HOSE |
56. DISCONNECT NO. 2 WATER BY-PASS HOSE |
57. REMOVE REAR ENGINE COVER SUB-ASSEMBLY |
Remove the 3 clips and engine cover.
58. REMOVE NO. 3 WATER BY-PASS PIPE |
Remove the bolt and water by-pass pipe.
59. REMOVE NO. 4 WATER BY-PASS PIPE |
Remove the bolt and water by-pass pipe.
60. REMOVE INTAKE AIR SURGE TANK SUB-ASSEMBLY |
Remove the 2 bolts and intake manifold stay.
Remove the 4 bolts and 2 surge tank stays.
Using a 5 mm hexagon socket wrench, remove the 7 bolts, 2 nuts and gasket.
- HINT:
- Cover the intake manifold port to prevent foreign matter from entering it.
61. INSPECT INTAKE AIR SURGE TANK SUB-ASSEMBLY |
Using a precision straightedge and feeler gauge, measure the surface contacting the cylinder head for warpage.
- Maximum warpage:
Condition
| Specified Condition
|
When installed
| 0.3 mm (0.011 in.)
|
When not installed
| 2.5 mm (0.098 in.)
|
If the warpage is greater than the maximum, replace the surge tank.
62. REMOVE INTAKE MANIFOLD |
Remove the 4 bolts, 2 nuts, intake manifold and gasket.
- HINT:
- Cover the cylinder head intake port to prevent foreign matter from entering it.
63. INSPECT INTAKE MANIFOLD |
Surge tank side:
Using a precision straightedge and feeler gauge, measure the surface contacting the cylinder head for warpage.
- Maximum warpage:
- 0.1 mm (0.003 in.)
If the warpage is greater than the maximum, replace the intake manifold.
Cylinder head side:
Using a precision straightedge and feeler gauge, measure the surface contacting the cylinder head for warpage.
- Maximum warpage:
- 0.1 mm (0.003 in.)
If the warpage is greater than the maximum, replace the intake manifold.
64. REMOVE FUEL PRESSURE PULSATION DAMPER ASSEMBLY |
Remove the fuel pulsation damper and 2 gaskets, and disconnect the fuel main tube from the fuel pump.
65. REMOVE NO. 1 FUEL PIPE SUB-ASSEMBLY |
Disconnect the fuel pipe hose.
Remove the 2 bolts and fuel pipe.
66. REMOVE NO. 2 FUEL PIPE SUB-ASSEMBLY |
Remove the fuel pipe from the fuel delivery pipe.
- NOTICE:
- Pull and remove the fuel pipe in a straight line to avoid damage to the seal surface of the delivery pipe's O-ring.
67. REMOVE HIGH PRESSURE SIDE FUEL PUMP |
Disconnect the fuel hose.
Remove the 2 nuts, fuel pump and fuel pump insulator.
68. REMOVE NO. 2 FUEL DELIVERY PIPE SUB-ASSEMBLY |
Disconnect the 3 wire harness clamps.
Remove the 2 bolts and 2 nuts.
With the connectors still connected, disconnect the delivery pipe.
- NOTICE:
- Make sure that the fuel delivery pipe is disconnected from the delivery pipe (LH side).
- Be extremely careful not to touch or strike the tips of the injectors.
- Pull and remove the fuel pipe in a straight line without tilting it.
Disconnect the 3 connectors from the 3 injectors.
Remove the 3 injector vibration insulators from the cylinder head.
69. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY |
Disconnect the 2 wire harness clamps.
Remove the 2 bolts and 2 nuts.
With the connectors still connected, disconnect the No. 2 fuel delivery pipe.
- NOTICE:
- Be extremely careful not to touch or strike the tips of the injectors.
- Pull and remove the fuel pipe in a straight line without tilting it.
Disconnect the 3 connectors from the 3 injectors.
Remove the 3 injector vibration insulators from the cylinder head.
70. REMOVE FUEL INJECTOR ASSEMBLY |
Remove the injectors from the delivery pipe.
- NOTICE:
- Pull and remove the injector in a straight line to avoid damage to the seal surface of the delivery pipe's O-ring.
Remove the nozzle holder clamp from the injector.
Remove the E-ring, O-ring, No. 1 backup ring, No. 2 backup ring and No. 3 backup ring from the injector.
Remove the 2 bolts and 2 sensors.
72. REMOVE ENGINE MOUNTING BRACKET RH |
Remove the 4 bolts and mounting bracket.
73. REMOVE ENGINE MOUNTING BRACKET LH |
Remove the 4 bolts and mounting bracket.
74. REMOVE OIL FILLER CAP SUB-ASSEMBLY |
75. REMOVE IGNITION COIL ASSEMBLY |
Remove the 6 bolts and 6 ignition coils.
76. REMOVE ENGINE OIL LEVEL SENSOR |
Remove the 4 bolts, then remove the oil level sensor and gasket.
77. REMOVE OIL PRESSURE SWITCH ASSEMBLY |
Using a 24 mm deep socket wrench, remove the oil pressure switch.
78. REMOVE ENGINE COOLANT TEMPERATURE SENSOR |
Using a 19 mm deep socket wrench, remove the temperature sensor.