Infiniti QX56 (JA60). Manual — part 469
EM-30
< ON-VEHICLE REPAIR >
EXHAUST MANIFOLD AND THREE WAY CATALYST
EXHAUST MANIFOLD AND THREE WAY CATALYST
Exploded View
INFOID:0000000005148989
Removal and Installation
INFOID:0000000005148990
REMOVAL
WARNING:
Perform the work when the exhaust and cooling system have cooled sufficiently.
1. Remove the engine undercover (rear) using power tool (4WD models).
2. Remove front final drive assembly (4WD models). Refer to
DLN-215, "Removal and Installation"
.
3. Remove the main muffler assembly and center exhaust tube. Refer to
EX-6, "Removal and Installation"
.
4. Remove the front exhaust tubes. Refer to
EX-6, "Removal and Installation"
5. Remove front tires. Refer to
6. Remove fender protectors. Refer to
EXT-23, "Removal and Installation"
.
7. Remove the LH and RH air fuel ratio A/F sensors.
• Follow steps below to remove each air fuel ratio A/F sensor.
a. Remove the harness connector of each air fuel ratio A/F sensor, and harness from bracket and middle
clamp.
1. Air fuel ratio A/F sensor 1 (bank 2)
2. Exhaust manifold cover (bank 2)
3.
Exhaust manifold (bank 2)
4. Gaskets
5. Exhaust manifold (bank 1)
6.
Exhaust manifold cover (bank 1)
7. Air fuel ratio A/F sensor 1 (bank 1)
A. Up
B. Coated face
C. Manifold side
D. Up mark
Front
AWBIA0453GB
EXHAUST MANIFOLD AND THREE WAY CATALYST
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b. Remove the air fuel ratio A/F sensors from both LH and RH
exhaust manifolds using Tool.
CAUTION:
• Do not damage the air fuel ratio A/F sensors
• Discard any air fuel ratio A/F sensor which has been
dropped from a height of more than 0.5m (19.7 in) onto a
hard surface such as a concrete floor. Replace it with a
new one.
8. Support the engine using a suitable tool.
9. Remove the exhaust manifold (LH) (A) following the steps
below.
•
: Front
• B: Exhaust manifold (RH)
a. Remove the engine mounting insulator. Refer to
b. Remove the exhaust manifold cover.
c. Remove the engine mounting bracket. Refer to
d. Loosen the nuts in reverse order as shown using power tool.
e. Remove the exhaust manifold (LH) (A).
10. Remove the exhaust manifold (RH) (B) following the steps
below.
•
: Front
• A: Exhaust manifold (LH)
a. Remove the engine mounting insulator. Refer to
b. Remove the exhaust manifold cover.
c. Remove the engine mounting bracket. Refer to
d. Remove the oil level gauge guide. Refer to
.
e. Loosen the nuts in reverse order as shown using power tool.
f.
Remove the exhaust manifold (RH) (B).
INSPECTION AFTER REMOVAL
Surface Distortion
• Check the flatness of each exhaust manifold flange surface using
suitable tools.
• If measurement exceeds the limit, replace the exhaust manifold.
INSTALLATION
Installation is in the reverse order of removal.
Tool number
: — (J-44626)
WBIA0630E
AWBIA0814ZZ
AWBIA0814ZZ
Flatness limit
: 0.3 mm (0.012 in)
KBIA2504E
EM-32
< ON-VEHICLE REPAIR >
EXHAUST MANIFOLD AND THREE WAY CATALYST
• Install new exhaust manifold gasket with the top of the triangular
up mark on it facing up and its coated face (gray side) toward the
exhaust manifold side.
• Tighten the exhaust manifold nuts LH and RH in the numerical
order shown. Then recheck the torque of the nuts.
- A: Exhaust manifold (LH)
- B: Exhaust manifold (RH)
-
: Front
• Before installing new air fuel ration A/F sensors, clean the exhaust system threads using suitable tool and
apply anti-seize lubricant.
CAUTION:
• Do not over tighten the air fuel ratio A/F sensors. Doing so may cause damage to the sensor,
resulting in the MIL coming on.
KBIA2553E
AWBIA0814ZZ
Oxygen sensor thread cleaner
: (J-43879-12)
Oxygen sensor thread cleaner
: (J-43897-18)
OIL PAN AND OIL STRAINER
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OIL PAN AND OIL STRAINER
Exploded View
INFOID:0000000005148991
Removal and Installation
INFOID:0000000005148992
REMOVAL
WARNING:
To avoid the danger of being scalded, never drain the engine oil when the engine is hot.
1. Drain engine oil. Refer to
2. Remove the engine. Refer to
EM-78, "Removal and Installation"
3. Remove the oil pan (lower) using the following steps.
1.
Oil pan (upper)
2.
O-ring
3.
O-ring
4.
O-ring
5.
O-ring (with collar)
6.
Oil level gauge guide
7.
Oil level gauge
8.
O-ring
9.
Connector bolt
10.
Oil filter
11. Oil cooler
12. Relief valve
13.
Oil pressure switch
14. Gasket
15. Drain plug
16.
Oil pan (lower)
17. Oil strainer
KBIA2465E
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