Infiniti G35 (V35) Sedan. Manual — part 608
INTAKE MANIFOLD
EM-31
< ON-VEHICLE REPAIR >
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• Tighten all mounting bolts and nuts to the specified torque in two or
more steps in numerical order as shown in the figure.
Inspection
INFOID:0000000000956243
INSPECTION AFTER REMOVAL
Surface Distortion
• Check the surface distortion of the intake manifold mating surface
with a straightedge (A) and a feeler gauge (B).
• If it exceeds the limit, replace intake manifold.
: Engine front
1st step:
: 7.4 N·m (0.75 kg-m, 5 ft-lb)
2nd step and after:
: 29.0 N·m (3.0 kg-m, 21 ft-lb)
JPBIA0013ZZ
Limit
: Refer to
JPBIA0015ZZ
EM-32
< ON-VEHICLE REPAIR >
EXHAUST MANIFOLD
EXHAUST MANIFOLD
Exploded View
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Removal and Installation
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REMOVAL
WARNING:
Perform the work when the exhaust and cooling system have completely cooled down.
NOTE:
When removing right bank side parts only, step 1, 4 and 7 are unnecessary.
1.
Drain engine coolant. Refer to
2.
Remove engine cover with power tool. Refer to
.
3.
Remove air cleaner case and air duct (RH and LH). Refer to
.
4.
Remove water pipe and water hose. Refer to
5.
Remove engine undercover with power tool.
6.
Remove exhaust front tube and three way catalysts (right and left bank). Refer to
7.
Disconnect steering lower joint at power steering gear assembly side, and release steering lower shaft.
1.
Heated oxygen sensor (bank 1)
2.
Air fuel ratio sensor (bank 1)
3.
Exhaust manifold cover (upper)
4.
Exhaust manifold (right bank)
5.
Exhaust manifold cover (lower)
6.
Gasket
7.
Ring gasket
8.
Three way catalyst (right bank)
9.
Gasket
10. Heated oxygen sensor (bank 2)
11. Gasket
12.
Three way catalyst (left bank)
13. Ring gasket
14. Exhaust manifold (left bank)
15.
Exhaust manifold cover (lower)
16. Gasket
17. Air fuel ratio sensor (bank 2)
18.
Exhaust manifold cover (upper)
Refer to
for symbol marks in the figure.
JPBIA0007GB
EXHAUST MANIFOLD
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8.
Disconnect air fuel ratio sensor (bank 1 and bank 2) harness connectors and remove harness clip.
9.
Using the heated oxygen sensor wrench [SST: KV10114400
(J38365)] (C), remove air fuel ratio sensor (bank 1 and bank 2).
CAUTION:
• Be careful not to damage air fuel ratio sensor.
• Discard any air fuel ratio sensor which has been dropped
onto a hard surface such as a concrete floor. Replace with
a new sensor.
10. Remove exhaust manifold cover (upper) (right and left bank).
11. Loosen mounting nuts in the reverse order as shown in the fig-
ure to remove exhaust manifold.
NOTE:
Disregard the numerical order No. 7 and 8 in removal.
12. Remove gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSTALLATION
Note the following, and install in the reverse order of removal.
EXHAUST MANIFOLD GASKET
• Install exhaust manifold gasket in direction shown in the figure.
(Follow same procedure for both banks.)
EXHAUST MANIFOLD
• If stud bolts were removed, install them and tighten to the specified torque below.
A
: Left bank
B
: Right bank
JPBIA0271ZZ
A
: Right bank
B
: Left bank
: Engine front
JPBIA0017ZZ
A
: Right bank
B
: Triangle press
C
: Left bank
: Engine front
JPBIA0019ZZ
EM-34
< ON-VEHICLE REPAIR >
EXHAUST MANIFOLD
• Install exhaust manifold and tighten mounting bolts in numerical
order as shown in the figure.
NOTE:
Tighten nuts No. 1 and 2 in two steps. The numerical order No. 7
and 8 shows second step.
AIR FUEL RATIO SENSOR
CAUTION:
• Before installing a new air fuel ratio sensor, clean exhaust system threads using heated oxygen sen-
sor thread cleaner tool (Commercial Service Tool: J-43897-18 or J-43897-12) and apply anti-seize
lubricant.
• Do not over torque air fuel ratio sensor. Doing so may cause damage to air fuel ratio sensor, result-
ing in the “MIL” coming on.
Inspection
INFOID:0000000000956246
INSPECTION AFTER REMOVAL
Surface Distortion
• Check the surface distortion of the exhaust manifold mating sur-
face with a straightedge (A) and a feeler gauge (B).
• If it exceeds the limit, replace exhaust manifold.
Tightening torque
A
: Right bank
B
: Left bank
: Engine front
JPBIA0017ZZ
Limit
: Refer to
.
JPBIA0018ZZ
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