Nissan Maxima. Manual - part 531

EM-12

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SPARK PLUG

PERIODIC MAINTENANCE

SPARK PLUG

Exploded View

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Removal and Installation

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REMOVAL

1. Remove the ignition coil. Refer to 

EM-42, "Removal and Installation (LH)"

 and 

EM-42, "Removal and

Installation (RH)"

.

2. Remove the spark plug with a suitable spark plug wrench.

INSPECTION AFTER REMOVAL

1.

Ignition coil

2.

Spark plug

3.

Rocker cover (RH)

4.

Rocker cover (LH)

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PBIC2982E

SPARK PLUG

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• Do not use a wire brush for cleaning the spark plugs.

• If plug is covered with carbon, a spark plug cleaner may be used.

• Checking and adjusting spark plug gap is not required between

change intervals. Do not adjust the gap; replace the spark plug as

necessary if out of specification.

INSTALLATION

Installation is in the reverse order of removal.

*: Always check with the Parts Department for the latest parts information.

SMA773C

Cleaner air pressure : less than 588 kPa (6 kg/cm

2

, 85 psi)

Cleaning time

: less than 20 seconds

SMA806CA

Make

DENSO

Standard type*

FXE22HR11

Gap (nominal)

1.1 mm (0.043 in)

EM-14

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DRIVE BELTS

DRIVE BELTS

Checking Drive Belts

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WARNING:

Inspect and check the drive belt with the engine off.

• Check that the indicator of drive belt auto-tensioner is within the possible use range.

NOTE:

• Check the drive belt auto-tensioner indication when the engine is cold.

• When new drive belt is installed, the indicator should be within the new drive belt range.

• Visually check entire drive belt for wear, damage or cracks.

• If the indicator is out of the possible use range or the drive belt is damaged, replace the drive belt.

Tension Adjustment

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• Drive 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 wheel and tire using power tool. Refer to 

WT-60, "Adjustment"

.

2. Remove the fender protector side cover (RH). Refer to 

EXT-24, "Removal and Installation"

.

3. While securely holding the hexagonal part in pulley center of

drive belt auto-tensioner, move in the direction of arrow (loosen-

ing direction of drive belt auto-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 drive belt auto-tensioner pulley bolt.

(Do not turn it counterclockwise. If turned counterclock-

wise, the complete drive belt auto-tensioner must be

replaced as a unit, including pulley.)

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1.

Idler pulley

2.

Drive belt

3.

Power steering oil pump

4.

Drive belt auto-tensioner

5.

Crankshaft pulley

6.

Idler pulley

7.

A/C compressor

8.

Generator

A.

Indicator

B.

New drive belt range

C.

Possible use range

D.

View D

Engine front

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DRIVE BELTS

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4. Insert a rod approximately 6 mm (0.24 in) in diameter through the rear of drive belt auto-tensioner into

retaining boss to lock drive belt auto-tensioner pulley.

• Leave drive belt auto-tensioner pulley arm locked until drive belt is installed again.

5. Remove drive belt from crankshaft pulley and then remove it from the other pulleys. 

INSTALLATION

1. Install the drive belt onto all of the pulleys.

CAUTION:

Confirm drive belt is completely set on the pulleys.
2. Release drive belt auto-tensioner, and apply tension to drive belt.

WARNING:

• Avoid placing hand in a location where pinching may occur if the holding tool accidentally

comes off.

CAUTION:

• Do not loosen the drive belt auto-tensioner pulley bolt. (Don't turn it counterclockwise. If turned

counterclockwise, the complete drive belt 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 indicator is within the possible use range. Refer to 

EM-14, "Checking Drive Belts"

.

Removal and Installation of Drive Belt Auto-tensioner

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REMOVAL

CAUTION:

The complete drive belt auto-tensioner must be replaced as a unit, including the pulley.
1. Remove the drive belt. Refer to 

EM-14, "Removal and Installation"

. 

NOTE:

Insert a rod approximately 6 mm (0.24 in) in diameter through the rear of drive belt auto-tensioner into the

retaining boss to lock drive belt auto-tensioner pulley.

2. Remove the drive belt auto-tensioner using a power tool.

CAUTION:

Do not loosen the drive belt auto-tensioner pulley bolt. Don't turn it counterclockwise. If turned coun-

terclockwise, the complete auto-tensioner including the pulley must be replaced as a unit. 

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• If there is damage greater than peeled paint, replace drive belt auto-tensioner unit.

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1. Drive belt auto-tensioner

2. Idler pulley

3. A/C idler pulley