Nissan Maxima Service and Repair Manual: Exhaust Manifold And Three Way Catalyst
Exploded View
- Gasket
- Exhaust manifold (RH)
- Exhaust manifold heat shield (RH)
- Air fuel ratio sensor 1 (bank 1)
- Ring gasket
- Three way catalyst (bank 1)
- Three way catalyst support (bank 1)
- Heated oxygen sensor 2 (bank 1)
- Three way catalyst (bank 2)
- Three way catalyst support (bank 2)
- Heated oxygen sensor 2 (bank 2)
- Ring gasket
- Exhaust manifold (LH)
- Exhaust manifold heat shield (LH)
- Air fuel ratio sensor 1 (bank 2)
- To oil pan (upper)
- Upper mark
Engine front
Removal and Installation (LH)
REMOVAL
WARNING:
- Perform the work when the exhaust system has completely cooled
down.
- When removing the front and rear engine mounting through bolts
and nuts, lift the engine up slightly for safety.
NOTE: When removing components such as
hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.
- Remove the air cleaner case assembly, and air duct hose and resonator
assembly. Refer to EM-24, "Removal and Installation".
- Remove the battery and battery tray assembly. Refer to PG-68,
"Removal and Installation (Battery Tray)".
- Remove the radiator. Refer to CO-14, "Removal and Installation".
- Remove the fan shroud and fan motor. Refer to CO-16, "Removal and
Installation".
- Remove the front exhaust tube. Refer to EX-5, "Exploded View".
- Remove the three way catalyst support brackets (LH).
- Remove heated oxygen sensor 2 (bank 2), air fuel ratio (A/F)
sensor 1 (bank 2).
- . Remove harness connector of each sensor,
and disconnect the harness from the bracket and middle clamp.
- . Remove both heated oxygen sensor 2 and air fuel
ratio (A/F) sensor 1 using Tool.
Tool numbers : KV10114400 (J-38365)
: KV991J0050 (J-44626)
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.
- Remove exhaust manifold heat shield (LH) and three way catalyst heat
shields (LH) using power tool.
- Remove the three way catalyst (bank 2) by loosening the bolts first and
then removing the nuts and through bolts.
- Loosen and remove the exhaust manifold nuts in the reverse
order as shown.
: Engine front
NOTE: Number 7 and 8 are not applicable to
removal.
- 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.
Limit : 0.3 mm (0.012 in)
- Replace the exhaust manifold if the measurement exceeds specifications.
INSTALLATION
Installation is in the reverse order of removal.
- Install the studs in the exhaust manifold (if removed), and
tighten to specification.
Exhaust manifold studs : 15.4 N*m (1.6 kg-m, 11 ft-lb)
- Install the exhaust manifold gasket in the direction shown.
CAUTION: Do not reuse exhaust manifold
gaskets.
(A) : Bank 1
(B) : Triangle press
(C) : Bank 2
: Engine front
- Install the exhaust manifold (LH) nuts and tighten to specification
in the order shown.
: Engine front
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.
Oxygen sensor thread cleaner : (J-43897-18)
Oxygen sensor thread cleaner
: (J-43897-12)
- Do not over-tighten the air fuel ratio (A/F) sensor 1 or heated
oxygen sensors 2. Doing so may cause damage.
Tool numbers : KV10114400 (J-38365)
: KV991J0050 (J-44626)
Removal and Installation (RH)
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".
- Remove the engine and transaxle assembly. Refer to EM-103,
"Removal and Installation".
- Remove the (RH) three way catalyst supports.
- Remove rear engine mount bracket. Refer to EM-103, "Removal and
Installation".
- Remove heated oxygen sensor 2 (bank 1), air fuel ratio (A/F)
sensor 1 (bank 1).
- 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.
- Remove both heated oxygen sensors 2 (bank 1)
and air fuel ratio (A/F) sensors 1 using Tool.
Tool numbers : KV10114400 (J-38365)
: KV991J0050 (J-44626)
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.
- Remove exhaust manifold heat shield (RH) and three way catalyst heat
shields (RH) using power tool.
- Remove the three way catalyst (bank 1) by loosening the bolts first and
then removing the nuts and through bolts.
- Loosen the exhaust manifold nuts in the reverse order as shown
and remove the exhaust manifold (RH).
: Engine front
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.
Limit : 0.3mm (0.012 in)
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).
:Engine front
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.
Tool numbers : J-43897-18
: J-43897-12
- Do not over-tighten the air fuel ratio (A/F) sensor 1 or heated
oxygen sensors 2. Doing so may cause damage.
Tool numbers : KV10114400 (J-38365)
: KV991J0050 (J-44626)
Removal and Installation
Intake manifold
Intake manifold gaskets
Refer to INSTALLATION
REMOVAL
WARNING: To avoid the danger of being
scalded, do not drain the coolant when th ...
Exploded View
Oil pan baffle
O-ring
Gasket
Oil pressure switch
Oil cooler gasket
Oil cooler
Oil cooler connection
Oil filter
Lower oil pan
Oil strainer
Rear plate cove ...
Other materials:
P0137, P0157 HO2S2
Description
The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen level in the exhaust gas on each bank.
Even if switching characteristics of the air fuel ratio (A/F) sensor 1
are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal
...
Malfunction indicator lamp
Description
The Malfunction Indicator Lamp (MIL) is located on the combination
meter.
The MIL will illuminate when the ignition switch is turned ON without
the engine running. This is a bulb check.
When the engine is started, the MIL should turn off. If the MIL
remains illuminated, ...
Steering gear and linkage
Exploded View
Outer socket
Boot clamp
Boot
Inner socket
Boot clamp
SSPS valve (part of gear assembly)
Gear assembly Front Three Bond 1111B or equivalent
Disassembly
Remove outer socket locknut and outer socket.
Remove boot clamps and boot. CAUTION:
Do not reuse boot ...