Nissan Altima L32. Manual - part 650

EM-136

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EXHAUST MANIFOLD AND THREE WAY CATALYST

EXHAUST MANIFOLD AND THREE WAY CATALYST

Removal and Installation

INFOID:0000000004202161

REMOVAL

WARNING:

AWBIA0744GB

1.

Exhaust manifold heat shield (RH)

2.

Air fuel ratio (A/F) sensor 1 (bank 1)

3.

Exhaust manifold (RH)

4.

Gaskets

5.

Heated oxygen sensor 2 (bank 1)

6.

Three way catalyst (manifold) (bank 
1)

7.

Three way catalyst (manifold) (bank 
2)

8.

Heated oxygen sensor 2 (bank 2)

9.

Exhaust manifold (LH)

10. Air fuel ratio (A/F) sensor 1 (bank 2) 11. Exhaust manifold heat shield (LH)

EXHAUST MANIFOLD AND THREE WAY CATALYST

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• Perform the work when the exhaust and cooling system have completely cooled down.

• When removing the front and rear engine mounting through bolts and nuts, lift the engine up slightly

for safety. For engine slingers, refer to 

EM-202, "Removal and Installation"

.

1. Remove the engine and transaxle assembly. Refer to 

EM-202, "Removal and Installation"

.

2. Remove the RH and LH three way catalyst supports.
3. Remove heated oxygen sensor 2 (bank 1), heated oxygen sensor 2 (bank 2), air fuel ratio (A/F) sensor 1

(bank 1) and air fuel ratio (A/F) sensor 1 (bank 2).

a. Remove harness connector of each sensor, and disconnect the harness from the bracket and middle

clamp.

b. Remove both heated oxygen sensors and air fuel ratio (A/F) sensors using Tool.

CAUTION:

• Be careful not to damage heated oxygen sensors or air fuel ratio (A/F) sensors.

• 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; replace with a new sensor.

4. Remove exhaust manifold and three way catalyst heat shields with power tool.
5. Remove the three way catalyst (manifold) (bank 1) and three way catalyst (manifold) (bank 2) by loosen-

ing the bolts first and then removing the nuts and through bolts.

6. Remove the exhaust manifolds RH (A) and LH (B). Loosen the

exhaust manifold nuts in the order as shown.

INSPECTION AFTER REMOVAL

Surface Distortion

• Use a reliable straightedge and feeler gauge to check the flatness

of the exhaust manifold mating surfaces.

Tool numbers

: KV10114400 (J-38365)
: —

 

(J-44626)

: Front

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Limit

: 0.3mm (0.012 in)

PBIC1173E

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EXHAUST MANIFOLD AND THREE WAY CATALYST

INSTALLATION

Installation is in the reverse order of removal.

• Install the exhaust manifold nuts in the order as shown RH (A) and

LH (B).

CAUTION:

• Before installing a heated oxygen sensor or air fuel ratio (A/F) sensor, clean the exhaust manifold

threads using the oxygen sensor thread cleaner tool, and apply anti-seize lubricant.

• Do not over-tighten the air fuel ratio (A/F) sensor or heated oxygen sensors. Doing so may cause

damage.

: Front

ALBIA0237ZZ

ALBIA0238ZZ

Tool numbers

: J-43897-18
: J-43897-12

Tool numbers

: KV10114400 (J-38365)
: —

 

(J-44626)

OIL PAN AND OIL STRAINER

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OIL PAN AND OIL STRAINER

Removal and Installation

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REMOVAL

WARNING:

• You should not remove the oil pan until the exhaust system and cooling system have completely

cooled off.

• When removing the front and rear engine through bolts and nuts, lift the engine up slightly for safety.

For engine slingers, refer to 

EM-202, "Removal and Installation"

.

CAUTION:

When removing the upper oil pan from the engine, first remove the crankshaft position sensor (POS).

Be careful not to damage sensor edges or signal plate teeth.
1. Remove the front RH wheel and tire using power tool. Refer to 

WT-66

.

2. Disconnect the battery negative terminal. Refer to 

PG-68, "Removal and Installation"

 (Coupe models) or

PG-139, "Removal and Installation"

 (Sedan models).

3. Remove the oil dipstick.
4. Drain the engine coolant. Refer to 

CO-35, "Changing Engine Coolant"

.

5. Remove the engine undercover.
6. Remove the RH inner fender splash shield.
7. Remove the drive belt. Refer to 

EM-121, "Removal and Installation"

.

8. Remove the front exhaust tube. Refer to 

EX-11, "Exploded View"

.

9. Remove coolant pipe bolts.
10. Remove the A/C compressor with piping attached, and position it out of the way securely with wire.

CAUTION:

Do not pull on or crimp the A/C lines and hoses.

11. Disconnect the coolant lines from the engine oil cooler and plug them to prevent coolant loss.

AWBIA0577GB

1.

Oil pan baffle

2.

O-ring

3.

Gasket

4.

Oil pressure switch 

5.

Oil cooler gasket

6.

Oil cooler

7.

Oil cooler connection

8.

Oil filter

9.

Lower oil pan

10. Oil strainer

11. Rear plate cover

12. Upper oil pan