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
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
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
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< 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 >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
Tool numbers
: KV10114400 (J-38365)
: KV991J0050 (J-44626)
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