Nissan Altima L32. Manual - part 646

EM-120

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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

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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

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• Belt tension is not manually 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

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EM-122

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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 

EM-16, "Checking Drive

Belts"

.

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

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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