Nissan Altima L32. Instruction — part 646
EM-120
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[VQ35DE]
SPARK PLUG
• Do not use a wire brush for cleaning the spark plugs. Replace as
necessary.
• If plug is covered with carbon, a spark plug cleaner may be used.
• Checking and adjusting plug gap is not required between change
intervals. If the gap is out of specification, replace the spark plug.
INSTALLATION
Installation is in the reverse order of removal.
SMA773C
Cleaner air pressure : less than 588 kPa (6 kg/cm
2
, 85 psi)
Cleaning time
: less than 20 seconds
SMA806CA
Temperature range
DENSO
Standard type
FXE22HR11
Gap (nominal)
1.1 mm (0.043 in)
DRIVE BELTS
EM-121
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DRIVE BELTS
Checking Drive Belts
INFOID:0000000004202151
WARNING:
Inspect and check the drive belts with the engine off.
1. Inspect belt for cracks, fraying, wear or oil adhesion. If necessary, replace with a new one.
2. Rotate the crankshaft pulley two times then check the belt tension.
NOTE:
• Inspect drive belt tension when engine is cold.
Tension Adjustment
INFOID:0000000004202152
• Belt tension is not instructionly adjustable, it is automatically adjusted by the drive belt auto-tensioner.
Removal and Installation
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REMOVAL
1. Remove the front RH side cover.
2. While securely holding the hexagonal part in pulley center of
drive belt auto-tensioner, move in the direction of arrow (loosen-
ing direction of tensioner) using suitable tool.
WARNING:
• Avoid placing hand in a location where pinching may
occur if the holding tool accidentally comes off.
CAUTION:
• Do not loosen the auto-tensioner pulley bolt. (Do not turn
it counterclockwise.) If turned counterclockwise, the com-
plete auto-tensioner must be replaced as a unit, including
pulley.
3. Insert a rod approximately 6 mm (0.24 in) in diameter through
the rear of tensioner into retaining boss to lock tensioner pulley.
• Leave tensioner pulley arm locked until belt is installed again.
4. Loosen auxiliary drive belt from water pump pulley and then remove it from the other pulleys.
AWBIA0707ZZ
1.
Power steering pump
2.
Drive belt auto-tensioner
3.
Crankshaft
4.
Idler pulley
5.
A/C compressor pulley
6.
Generator pulley
7.
Idler pulley
8.
Drive belt
A.
Indicator
B.
Possible use range (for new belt) C.
Belt replacement
ALBIA0223ZZ
EM-122
< ON-VEHICLE MAINTENANCE >
[VQ35DE]
DRIVE BELTS
INSTALLATION
1. Install the drive belt onto all of the pulleys.
CAUTION:
Confirm belts are completely set on the pulleys.
2. Release tensioner, and apply tension to belt.
WARNING:
• Avoid placing hand in a location where pinching may occur if the holding tool accidentally
comes off.
CAUTION:
• Do not loosen the auto-tensioner pulley bolt. (Don't turn it counterclockwise. If turned counter-
clockwise, the complete auto-tensioner must be replaced as a unit, including pulley.
3. Turn crankshaft pulley clockwise several times to equalize tension between each pulley.
4. Confirm tension of belt at indicator is within the allowable use range. Refer to
.
Removal and Installation of Drive Belt Auto-tensioner
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REMOVAL
CAUTION:
The complete auto-tensioner must be replaced as a unit, including the pulley.
1. Remove the front RH engine cover.
2. Remove the drive belt
EM-121, "Removal and Installation"
• Insert a rod approximately 6 mm (0.24 in) in diameter through the rear of tensioner into the retaining
boss to lock tensioner pulley.
3. Remove the drive belt auto-tensioner, with power tool.
CAUTION:
Do not loosen the auto-tensioner pulley bolt. (Don't turn it counterclockwise. If turned counterclock-
wise, the complete auto-tensioner must be replaced as a unit, including pulley.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• If there is damage greater than peeled paint, replace drive belt auto-tensioner units.
• Do not swap the pulley between the new and old auto-tensioner units.
ALBIA0222GB
1. Drive belt auto-tensioner
2. Idler pulley
3. A/C idler pulley
AIR CLEANER FILTER
EM-123
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AIR CLEANER FILTER
Removal and Installation
INFOID:0000000004202155
CHANGING THE AIR CLEANER FILTER
CAUTION:
It is not necessary to remove the front air duct to replace the ail cleaner filter.
1. Unhook the air cleaner case side clips.
2. Remove the air cleaner filter.
3. Install a new air cleaner filter.
4. Lock the air cleaner case side clips.
AWBIA0569ZZ
1.
Air duct hose
2. Duct sub-cover
3.
Front air duct
4.
Air cleaner case (lower)
5.
Grommets
6.
Air cleaner case mounting bracket
7.
Bracket
8.
Air cleaner filter
9.
Air cleaner case (upper)
10. Mass air flow sensor
A. To electric throttle control actuator
B. Air cleaner case side clips
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