Lexus NX: Installation
INSTALLATION
PROCEDURE
1. INSTALL NO. 2 EXHAUST MANIFOLD HEAT INSULATOR
(a) Install the No. 2 exhaust manifold heat insulator with the 2 bolts.
Torque:
13.5 N·m {138 kgf·cm, 10 ft·lbf}
2. INSTALL EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY
(a) Install a new exhaust manifold to head gasket to the cylinder head sub-assembly.
(b) Temporarily install the exhaust manifold converter sub-assembly with the 5 nuts.
(c) Temporarily install the manifold stay and No. 2 manifold stay with the 2 bolts and 2 nuts.
| (d) Tighten the 5 nuts in the order shown in the illustration. Torque: 35 N·m {357 kgf·cm, 26 ft·lbf} |
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3. INSTALL MANIFOLD STAY
| (a) Tighten the bolt and nut in the order shown in the illustration. Torque: 43 N·m {438 kgf·cm, 32 ft·lbf} |
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4. INSTALL NO. 2 MANIFOLD STAY
| (a) Tighten the bolt and nut in the order shown in the illustration. Torque: 43 N·m {438 kgf·cm, 32 ft·lbf} |
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5. INSTALL NO. 2 EGR PIPE
(a) Install 2 new gaskets to the No. 2 EGR pipe.
NOTICE:
Make sure the claws of the gasket face the No. 2 EGR pipe.
(b) Install the No. 2 EGR pipe with the 2 bolts and 2 nuts.
Torque:
36 N·m {367 kgf·cm, 27 ft·lbf}
6. INSTALL NO. 1 MANIFOLD CONVERTER INSULATOR
(a) Install the No. 1 manifold converter insulator with the 3 bolts.
Torque:
13.5 N·m {138 kgf·cm, 10 ft·lbf}
7. INSTALL AIR FUEL RATIO SENSOR
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8. CONNECT INVERTER RESERVOIR ASSEMBLY
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9. CONNECT WIRE HARNESS
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10. INSTALL NO. 1 EXHAUST MANIFOLD HEAT INSULATOR
(a) Install the No. 1 exhaust manifold heat insulator with the 4 bolts.
Torque:
12 N·m {122 kgf·cm, 9 ft·lbf}
11. INSTALL FRONT EXHAUST PIPE ASSEMBLY
| (a) Using a vernier caliper, measure the free length of the compression spring. Minimum length: 41.5 mm (1.63 in.) If the length is less than the minimum, replace the compression spring. |
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(b) Using a wire brush, remove any foreign matter from the gasket installation surface.
| (c) Using a plastic-faced hammer and wooden block, tap in a new gasket until its surface is flush with the exhaust manifold converter sub-assembly. NOTICE:
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(d) Install a new gasket to the front exhaust pipe assembly.
| (e) Install the front exhaust pipe assembly with the 2 compression springs and 4 bolts. Torque: 43 N·m {438 kgf·cm, 32 ft·lbf} HINT: After installation, check that the space between the flanges of the exhaust manifold converter sub-assembly and front exhaust pipe assembly is consistent front-to-rear and left-to-right. |
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(f) Connect the heated oxygen sensor connector.
12. INSTALL NO. 1 ENGINE UNDER COVER ASSEMBLY
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13. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY
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14. INSPECT FOR EXHAUST GAS LEAK
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READ NEXT:
Components
COMPONENTS ILLUSTRATION *1 CENTER EXHAUST PIPE ASSEMBLY *2 EXHAUST PIPE DAMPER *3 FRONT EXHAUST PIPE ASSEMBLY *4 HEATED OXYGEN SENSOR *5 TAIL EXHAUST PIPE ASSEMBLY *6 EXH
Removal
REMOVAL CAUTION / NOTICE / HINT CAUTION:
Wear protective gloves when removing the exhaust pipe assembly.
The exhaust pipe assembly is extremely hot immediately after the engine has stopped.
Con
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
Child safety
Riding with children
Observe the following precautions
when children are in the vehicle.
Use a child restraint system appropriate
for the child, until the child
becomes large enough to properly
wear the vehicle's seat belt.
It is recommended that children
sit in the rear seats to avoid
