Nissan Maxima. Manual - part 536

 

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Nissan Maxima. Manual - part 536

 

 

EM-32

< REMOVAL AND INSTALLATION >

EXHAUST MANIFOLD AND THREE WAY CATALYST

1. Remove the air cleaner case assembly, and air duct hose and resonator assembly. Refer to 

EM-24,

"Removal and Installation"

.

2. Remove the battery and battery tray assembly. Refer to 

PG-68, "Removal and Installation (Battery Tray)"

.

3. Remove the radiator. Refer to 

CO-14, "Removal and Installation"

.

4. Remove the fan shroud and fan motor. Refer to 

CO-16, "Removal and Installation"

.

5. Remove the front exhaust tube. Refer to 

EX-5, "Exploded View"

.

6. Remove the three way catalyst support brackets (LH).
7. Remove heated oxygen sensor 2 (bank 2), 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 sensor 2 and air fuel ratio (A/F) sensor 1 using Tool.

CAUTION:

• Be careful not to damage heated oxygen sensors 2 or air fuel ratio (A/F) sensors 1.

• Discard any heated oxygen sensor 2 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.

8. Remove exhaust manifold heat shield (LH) and three way catalyst heat shields (LH) using power tool.
9. Remove the three way catalyst (bank 2) by loosening the bolts first and then removing the nuts and

through bolts.

10. Loosen and remove the exhaust manifold nuts in the reverse

order as shown. 

NOTE:

Number 7 and 8 are not applicable to removal.

11. Remove the exhaust manifold (LH) and gasket. 

INSPECTION AFTER REMOVAL

Surface Distortion

• Use a suitable tool to check the flatness of the exhaust manifold

mating surfaces as shown.

• Replace the exhaust manifold if the measurement exceeds specifi-

cations.

INSTALLATION

Installation is in the reverse order of removal.
1. Install the studs in the exhaust manifold (if removed), and tighten to specification.

Tool numbers

: KV10114400 (J-38365)
: KV991J0050 (J-44626)

: Engine front

AWBIA1208GB

Limit

: 0.3 mm (0.012 in)

PBIC1173E

Exhaust manifold studs

: 15.4 N·m (1.6 kg-m, 11 ft-lb)

EXHAUST MANIFOLD AND THREE WAY CATALYST

EM-33

< REMOVAL AND INSTALLATION >

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2. Install the exhaust manifold gasket in the direction shown. 

CAUTION:

Do not reuse exhaust manifold gaskets.

3. Install the exhaust manifold (LH) nuts and tighten to specifica-

tion in the order shown.

NOTE:

Number 7 and 8 are tightened a second time. 

CAUTION:

• Before installing a heated oxygen sensor 2 or air fuel ratio (A/F) sensor 1, 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 1 or heated oxygen sensors 2. Doing so may

cause damage.

Removal and Installation (RH)

INFOID:0000000009466017

REMOVAL 

WARNING:

• 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-103, "Removal and Installation"

.

1. Remove the engine and transaxle assembly. Refer to 

EM-103, "Removal and Installation"

.

2. Remove the (RH) three way catalyst supports.
3. Remove rear engine mount bracket. Refer to 

EM-103, "Removal and Installation"

.

4. Remove heated oxygen sensor 2 (bank 1), air fuel ratio (A/F) sensor 1 (bank 1).
a. Remove harness connector from heated oxygen sensor 2 (bank 1) and air fuel ratio (A/F) sensor 1, and

disconnect the harness from the bracket and middle clamp.

b. Remove both heated oxygen sensors 2 (bank 1) and air fuel ratio (A/F) sensors 1 using Tool.

CAUTION:

• Be careful not to damage heated oxygen sensors 2 or air fuel ratio (A/F) sensors 1.

(A)

: Bank 1

(B)

: Triangle press

(C)

: Bank 2
: Engine front

PBIC4954E

: Engine front

AWBIA1208GB

Oxygen sensor thread cleaner

: (J-43897-18)

Oxygen sensor thread cleaner

: (J-43897-12)

Tool numbers

: KV10114400 (J-38365)
: KV991J0050 (J-44626)

Tool numbers

: KV10114400 (J-38365)
: KV991J0050 (J-44626)

EM-34

< REMOVAL AND INSTALLATION >

EXHAUST MANIFOLD AND THREE WAY CATALYST

• Discard any heated oxygen sensor 2 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.

5. Remove exhaust manifold heat shield (RH) and three way catalyst heat shields (RH) using power tool.
6. Remove the three way catalyst (bank 1) by loosening the bolts first and then removing the nuts and

through bolts.

7. Loosen the exhaust manifold nuts in the reverse order as shown

and remove the exhaust manifold (RH).

NOTE:

Number 7 and 8 are not applicable to removal.

INSPECTION AFTER REMOVAL

Surface Distortion

• Use a suitable tool to check the flatness of the exhaust manifold

mating surfaces as shown.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

Do not reuse exhaust manifold gaskets.

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

NOTE:

Number 7 and 8 are tightened a second time.

CAUTION:

• Before installing a heated oxygen sensor 2 or air fuel ratio (A/F) sensor 1, clean the exhaust mani-

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

• Do not over-tighten the air fuel ratio (A/F) sensor 1 or heated oxygen sensors 2. Doing so may

cause damage.

: Engine front

AWBIA1209GB

Limit

: 0.3mm (0.012 in)

PBIC1173E

:Engine front

ALBIA0237ZZ

Tool numbers

: J-43897-18
: J-43897-12

EXHAUST MANIFOLD AND THREE WAY CATALYST

EM-35

< REMOVAL AND INSTALLATION >

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Tool numbers

: KV10114400 (J-38365)
: KV991J0050 (J-44626)

 

 

 

 

 

 

 

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