Lexus NX: Installation

Lexus NX Service Manual / Engine & Hybrid System / 2ar-fxe (intake / Exhaust) / Exhaust Pipe / Installation

INSTALLATION

PROCEDURE

1. INSTALL EXHAUST PIPE DAMPER

(a) Install the exhaust pipe damper with the 2 bolts.

Torque:

19 N·m {194 kgf·cm, 14 ft·lbf}

2. INSTALL HEATED OXYGEN SENSOR

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3. 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.

(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:

Be sure to install the gasket so that it faces the correct direction.
Do not reuse the gasket.
Do not damage the gasket.
When connecting the front exhaust pipe assembly, do not push in the gasket with the front exhaust pipe assembly.

*1	Exhaust Manifold Converter Sub-assembly
*2	Gasket
*a	Wooden Block

(d) Install the front exhaust pipe assembly with the 2 compression springs and 2 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.

*1	Exhaust Manifold Converter Sub-assembly
*2	Front Exhaust Pipe Assembly
*3	Gasket
*a	Space between flanges: 8.5 mm (0.335 in.)

4. INSTALL CENTER EXHAUST PIPE ASSEMBLY

(a) Install a new gasket to the front exhaust pipe assembly.

(b) Connect the 3 exhaust pipe supports to install the center exhaust pipe assembly.

Torque:

43 N·m {438 kgf·cm, 32 ft·lbf}

5. INSTALL TAIL EXHAUST PIPE ASSEMBLY

(a) Using a vernier caliper, measure the free length of the compression spring.

Minimum length:

38.5 mm (1.52 in.)

If the length is less than the minimum, replace the compression spring.

(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 center exhaust pipe assembly.

NOTICE:

Be sure to install the gasket so that it faces the correct direction.
Do not reuse the gasket.
Do not damage the gasket.
When connecting the tail exhaust pipe assembly, do not push in the gasket with the tail exhaust pipe assembly.

*1	Center Exhaust Pipe Assembly
*2	Gasket
*a	Wooden Block

(d) Connect the 2 exhaust pipe supports to install the tail exhaust pipe assembly.

(e) Install the tail exhaust pipe assembly with the 2 compression springs and 2 bolts.

Torque:

43 N·m {438 kgf·cm, 32 ft·lbf}

HINT:

After installation, check that the space between the flanges of the center exhaust pipe assembly and tail exhaust pipe assembly is consistent front-to-rear and left-to-right.

*1	Center Exhaust Pipe Assembly
*2	Tail Exhaust Pipe Assembly
*3	Gasket
*a	Space between flanges: 6.5 mm (0.256 in.)

6. INSPECT FOR EXHAUST GAS LEAK

If gas is leaking, tighten the areas necessary to stop the leak. Replace damaged parts as necessary.

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Lexus NX: Installation

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