Lexus ES: Removal
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during exhaust manifold assembly RH (TWC: Front Catalyst) and exhaust manifold assembly LH (TWC: Front Catalyst) removal/installation are shown below.
Necessary Procedures After Parts Removed/Installed/Replaced| Replaced Part or Performed Procedure | Necessary Procedure | Effect/Inoperative Function when Necessary Procedure not Performed | Link |
|---|---|---|---|
| Inspection After Repair |
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CAUTION:
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To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
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To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.
PROCEDURE
1. REMOVE FRONT FLOOR COVER LH
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2. REMOVE FRONT FLOOR COVER RH
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3. REMOVE BODY MOUNTING PLATE
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4. REMOVE NO. 1 EXHAUST PIPE SUPPORT BRACKET (for Lower Side)
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5. REMOVE EXHAUST PIPE ASSEMBLY FRONT (TWC: Rear Catalyst)
| (a) Disconnect the 2 heated oxygen sensor connectors. |
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(b) Disengage the 2 wire harness clamps.
| (c) Remove the 4 bolts, 4 nuts and disconnect the front exhaust pipe assembly (TWC: Rear Catalyst). |
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(d) Remove the front exhaust pipe assembly (TWC: Rear Catalyst) from the exhaust pipe support.
(e) Remove the 3 gaskets from the front exhaust pipe assembly (TWC: Rear Catalyst).
6. REMOVE AIR FUEL RATIO SENSOR (for Bank 1)
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7. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR
| (a) Remove the 3 bolts and No. 1 exhaust manifold heat insulator from the exhaust manifold assembly RH (TWC: Front Catalyst). |
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8. REMOVE EXHAUST MANIFOLD ASSEMBLY RH (TWC: Front Catalyst)
| (a) Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold assembly RH (TWC: Front Catalyst) from the cylinder head sub-assembly RH. |
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9. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 1)
| (a) Remove the exhaust manifold to head gasket (for Bank 1) from the cylinder head sub-assembly RH. |
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10. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH
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11. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH
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12. REMOVE NO. 1 ENGINE UNDER COVER
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13. REMOVE NO. 2 ENGINE UNDER COVER
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14. REMOVE V-BANK COVER SUB-ASSEMBLY
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15. REMOVE COOL AIR INTAKE DUCT SEAL
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16. REMOVE AIR FUEL RATIO SENSOR (for Bank 2)
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17. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE
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18. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR
| (a) Remove the 3 bolts and No. 2 exhaust manifold heat insulator from the exhaust manifold assembly LH (TWC: Front Catalyst). |
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19. REMOVE NO. 2 MANIFOLD STAY
(a) Remove the bolt, nut and No. 2 manifold stay from the exhaust manifold assembly LH (TWC: Front Catalyst) and cylinder block sub-assembly.
.png) | Bolt |
.png) | Nut |
20. DISCONNECT NO. 5 WATER BY-PASS HOSE
| (a) Disengage the 2 clamps to disconnect the No. 5 water by-pass hose and No. 6 water by-pass hose from the hose clamp. |
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21. REMOVE EXHAUST MANIFOLD ASSEMBLY LH (TWC: Front Catalyst)
| (a) Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold assembly LH (TWC: Front Catalyst). |
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22. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 2)
| (a) Remove the exhaust manifold to head gasket (for Bank 2) from the cylinder head sub-assembly. |
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23. REMOVE STUD BOLT
HINT:
If a stud bolt is deformed or its threads are damaged, replace it.
| (a) Using an E8 "TORX" socket wrench, remove the 2 stud bolts from the exhaust manifold assembly LH (TWC: Front Catalyst). |
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READ NEXT:
Installation
INSTALLATION PROCEDURE 1. INSTALL STUD BOLT HINT: If a stud bolt is deformed or its threads are damaged, replace it. (a) Using an E8 "TORX" socket wrench, install the 2 stud bolts to the exhaust ma
Components
COMPONENTS ILLUSTRATION *A Type A *B Type B *1 FRONT FLOOR COVER RH - - N*m (kgf*cm, ft.*lbf): Specified torque - - ILLUSTRATION *A Type A *B Type B *1
SEE MORE:
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the Techstream to read the Data List allows the values or states of
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be dis
