Infiniti G37 Coupe. Manual — part 609
PREPARATION
EM-11
< PREPARATION >
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Valve guide drift
Removing and installing valve guide (EXH)
Exhaust:
a: 9.5 mm (0.374 in) dia.
b: 5.5 mm (0.217 in) dia.
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Valve guide reamer
A: Reaming valve guide (EXH) inner hole
B: Reaming hole for oversize valve guide
(EXH)
Exhaust:
c: 6.0 mm (0.236 in) dia.
d: 10.2 mm (0.402 in) dia.
(J-43897-18)
(J-43897-12)
Oxygen sensor thread cleaner
Reconditioning the exhaust system threads
before installing a new air fuel ratio sensor and
heated oxygen sensor (Use with anti-seize lu-
bricant shown below.)
A: J-43897-18 [18 mm (0.71 in) dia.] for zir-
conia heated oxygen sensor and air fuel
ratio sensor
B: J-43897-12 [12 mm (0.47 in) dia.] for tita-
nia heated oxygen sensor
C: Mating surface shave cylinder
D: Flutes
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Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL specifica-
tion MIL-A-907)
Lubricating oxygen sensor thread cleaning
tool when reconditioning exhaust system
threads
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Feeler gauge
Inspection valve clearance (Use a curved-tip
gauge)
(Kent-Moore No.)
Tool name
Description
JPBIA0400ZZ
JPBIA0401ZZ
JPBIA0238ZZ
AEM489
JPBIA1362ZZ
EM-12
< ON-VEHICLE MAINTENANCE >
DRIVE BELTS
ON-VEHICLE MAINTENANCE
DRIVE BELTS
Exploded View
INFOID:0000000001547609
Checking
INFOID:0000000001547610
WARNING:
Be sure to perform the this step when engine is stopped.
• Check that the indicator (C) (notch on fixed side) of drive belt auto-tensioner is within the possible use range
(A).
NOTE:
• Check the drive belt auto-tensioner indication when the engine is cold.
• When new drive belt is installed, the indicator (notch on fixed side) should be within the range (B) in the fig-
ure.
• Visually check the entire drive belt for wear, damage or crack.
• If the indicator (notch on fixed side) is out of the possible use range or belt is damaged, replace drive belt.
Tension Adjustment
INFOID:0000000001547611
.
Removal and Installation
INFOID:0000000001547612
REMOVAL
1.
Remove engine undercover with power tool.
JPBIA1060ZZ
1.
Power steering oil pump
2.
Alternator
3.
Drive belt auto-tensioner
4.
Idler pulley
5.
Crankshaft pulley
6.
A/C compressor
7.
Idler pulley
8.
Drive belt
9.
Idler pulley
A.
Possible use range
B.
Range when new drive belt is installed
C.
Indicator
D.
View D
DRIVE BELTS
EM-13
< ON-VEHICLE MAINTENANCE >
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2.
While securely holding the square hole (A) in pulley center of
auto tensioner (1) with a spinner handle, move spinner handle in
the direction of arrow (loosening direction of drive belt).
CAUTION:
Never place hand in a location where pinching may occur if
the holding tool accidentally comes off.
3.
Under the above condition, insert a metallic bar of approximately
6 mm (0.24 in) in diameter [hexagonal wrench (C) shown as
example in the figure] through the holding boss (B) to lock auto-
tensioner pulley arm.
4.
Remove drive belt.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
• Check drive belt is securely installed around all pulleys.
• Check drive belt is correctly engaged with the pulley groove.
• Check for engine oil and engine coolant are not adhered drive belt and pulley groove.
Inspection
INFOID:0000000001547613
INSPECTION AFTER INSTALLATION
• Turn crankshaft pulley clockwise several times to equalize tension between each pulley, and then confirm
tension of drive belt at indicator (notch on fixed side) is within the possible use range. Refer to
: Loosening direction of drive belt
JPBIA0003ZZ
EM-14
< ON-VEHICLE MAINTENANCE >
AIR CLEANER FILTER
AIR CLEANER FILTER
Removal and Installation
INFOID:0000000001547614
REMOVAL
1.
Unhook clips (1).
2.
Remove air cleaner filter (1) from air cleaner case (2).
INSTALLATION
Note the following, and install in the reverse order of removal.
• Install the air cleaner filter by aligning the seal with the notch of air cleaner case.
2
: Air cleaner case
3
: Holder
JPBIA1345ZZ
3
: Holder
4
: Clip
JPBIA1346ZZ
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