Nissan Altima L32. Instruction — part 650
EM-136
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[VQ35DE]
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
EM-137
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[VQ35DE]
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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
ALBIA0235ZZ
ALBIA0236ZZ
Limit
: 0.3mm (0.012 in)
PBIC1173E
EM-138
< ON-VEHICLE REPAIR >
[VQ35DE]
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
EM-139
< ON-VEHICLE REPAIR >
[VQ35DE]
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OIL PAN AND OIL STRAINER
Removal and Installation
INFOID:0000000004202162
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
.
2. Disconnect the battery negative terminal. Refer to
PG-68, "Removal and Installation"
(Coupe models) or
PG-139, "Removal and Installation"
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
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
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