Nissan Frontier D40. Manual - part 631

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< ON-VEHICLE MAINTENANCE >

EXHAUST SYSTEM

ON-VEHICLE MAINTENANCE

EXHAUST SYSTEM

Checking Exhaust System

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Check exhaust pipes, muffler and mounting for improper attachment, leaks, cracks, damage or deterioration.
• If anything is found, repair or replace damaged parts.

SMA211A

EXHAUST SYSTEM

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< ON-VEHICLE REPAIR >

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ON-VEHICLE REPAIR

EXHAUST SYSTEM

Exploded View

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Exhaust System QR25DE

WBIA0734E

1.

Tailpipe 

2.

Tailpipe hanger bracket

3.

Muffler hanger bracket rear

4.

Main muffler

5.

Muffler hanger bracket front

6.

Center exhaust tube

7.

Gasket 

8.

Heated oxygen sensor 2

9.

Front exhaust tube

10. Ring gasket

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< ON-VEHICLE REPAIR >

EXHAUST SYSTEM

Exhaust System VQ40DE

Removal and Installation

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WARNING:

• Perform the operation with the exhaust system fully cooled. The system will be hot just after the

engine stops. 

• Be careful not to cut your hand on the heat insulator edge.

CAUTION:

• Be sure to use genuine exhaust system parts or equivalents which are specially designed for heat

resistance, corrosion resistance, and shape.

REMOVAL

Remove exhaust system components using power tool.
• Remove heated oxygen sensor using Tool as needed.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Always replace exhaust gaskets with new ones when reassembling.
• Before installing a new heated oxygen sensor, clean and lube the exhaust tube threads using suit-

able tool.

AWBIA0865GB

1.

Tailpipe hanger bracket

2.

Tailpipe

3.

Gasket

4.

Main muffler

5.

Right front exhaust tube

6.

Ring gasket

7.

Heated oxygen sensor 2 (bank 1)

8.

Heated oxygen sensor 2 (bank 2)

9.

Left front exhaust tube

10. Center exhaust tube

11. Muffler hanger bracket front

12. Muffler hanger bracket rear

Front

Tool number

: KV10114400 (J-38365)

Oxygen sensor thread cleaner

: 

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(J-43897-18)

Oxygen sensor thread cleaner

: 

—

(J-43897-12)

EXHAUST SYSTEM

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• Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7

in) onto a hard surface such as a concrete floor; install a new one.

• Do not over-tighten the heated oxygen sensor. Doing so may damage the heated oxygen sensor,

resulting in the MIL coming on.

• If any mounting insulator is badly deformed, repair or replace it. If deposits such as mud pile up on

the mounting insulators, clean and inspect them.

• Temporarily tighten the nuts on the exhaust manifold side and the bolts on the vehicle side. Check

each part for interference with other components, and then tighten the nuts and bolts to specifica-
tion. 

INSPECTION AFTER INSTALLATION

• With the engine running, check exhaust tube joints for gas leakage and unusual noises.
• Check to ensure that mounting brackets and mounting rubbers are installed properly and free from undue

stress. Improper installation could result in excessive noise and vibration.