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Nissan Sentra B18 (2020-2025) Service Manual: Periodic Maintenance

Air Cleaner Filter

Exploded View

Exploded View

1.

Mass air flow sensor

2.

Resonator duct

3.

Clamp

4.

Air duct

5.

Clamp

6.

Air duct and resonator assembly

7.

Clip

8.

Air inlet duct

9.

Resonator

10.

Mounting rubber

11.

Air cleaner bracket

12.

Grommet

13.

Air cleaner case (lower)

14.

Air cleaner filter

15.

Air cleaner assembly

16.

Air cleaner case (upper)

A.

To blow-by hose. Refer to Exploded View.

B.

To electric throttle control actuator. Refer to Exploded View.

Removal and Installation

Removal and Installation

REMOVAL

Release clips and separate the air cleaner case (upper) from the air cleaner case (lower).

Remove the air cleaner filter.

INSTALLATION

Installation is in the reverse order of removal.

Inspection (viscous Paper Type)

Inspection (Viscous Paper Type)

INSPECTION AFTER REMOVAL

Examine with eyes that there is no stain, clogging, or damage on air cleaner filter.

  • Remove dusts (such as dead leafs) on air cleaner filter surface and inside cleaner case.

  • If clogging or damage is observed, replace the air cleaner filter.

CAUTION:

Do not clean the viscous paper type air cleaner filter by blowing as there is a risk of deterioration of its performance

MAINTENANCE INTERVAL

Refer to Introduction of Periodic Maintenance.

Drive Belt

Exploded View

Exploded View

1.

Generator

2.

Drive belt auto tensioner

3.

Crankshaft pulley

4.

A/C compressor

5.

Water pump

A.

View A

B.

Minimum belt length indicator

C.

Maximum belt length indicator

D.

Indicator mark

Removal and Installation

Removal and Installation

REMOVAL

Remove wheel and tire (RH). Refer to Removal and Installation.

Partially remove fender protector. Refer to Exploded View.

Securely hold hexagonal part of the drive belt auto tensioner with a suitable tool and rotate it clockwise.

CAUTION:

Avoid placing hands in a location where pinching may occur if suitable tool accidentally comes off.

Insert a suitable tool approximately 6 mm (0.24 in) in diameter into the hole of the retaining boss to secure drive belt auto tensioner. Note:

Keep drive belt auto tensioner arm locked after drive belt is removed.

Remove drive belt.

INSTALLATION

Install drive belt onto all pulleys.

CAUTION:

  • Avoid placing hands in location where pinching may occur if suitable tool accidentally comes off.

  • Check that drive belt path is correct.

  • Check the drive belt is securely inside the groove on each pulley.

  • Check for engine oil, engine coolant and other oil or grease on the drive belt and surrounding locations.

Release drive belt auto tensioner and apply tension to drive belt.

Turn crankshaft pulley several times clockwise to equalize tension between each pulley.

Installation of the remaining components is in the reverse order of removal.

Inspection

Inspection

1.

Generator

2.

Drive belt auto tensioner

3.

Crankshaft pulley

4.

A/C compressor

5.

Water pump

A.

View A

B.

Minimum belt length indicator

C.

Maximum belt length indicator

D.

Indicator mark

Warning:

Be sure to perform the these steps when engine is stopped.

Check that the indicator mark (D) on fixed side of drive belt auto tensioner is within minimum belt length indicator (B) and maximum belt length indicator (C) range. Note:

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

  • When new drive belt is installed, the indicator mark on fixed side should be within minimum belt length indicator (B) and maximum belt length indicator (C) range.

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

If the indicator mark on the fixed side is out of the possible use range or drive belt are damaged, replace drive belt.

Spark Plug

Exploded View

Exploded View

1.

Ignition coil

2.

Spark plug

3.

Rocker cover assembly

4.

Rocker cover gasket

5.

Clamp

6.

Blow-by hose

7.

Oil filler cap

8.

PCV valve

9.

O-ring

A.

Refer to Removal and Installation.

B.

To resonator duct. Refer to Exploded View.

   

Removal and Installation

Removal and Installation

REMOVAL

Remove ignition coil. Refer to Removal and Installation.

Remove spark plug with Tool.

CAUTION:

Do not drop or shock spark plug.

Tool number

: — (NI-48891)

After removal, inspect the spark plug. Refer to Inspection.

INSTALLATION

Installation is in the reverse order of removal.

Make

DENSO

Standard type*

DXE22H11C

Gap (nominal)

1.1 mm (0.043in)

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

Inspection

Inspection

INSPECTION AFTER REMOVAL

Use the standard type spark plug for normal condition.

Spark plug (Standard type)

: Refer to Spark Plug.

CAUTION:

  • Do not drop or shock spark plug.

  • Do not use a wire brush for cleaning.

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

Cleaner air pressure

: Less than 588 kPa (6 kg/cm2, 85 psi)

Cleaning time

: Less than 20 seconds

  • Checking and adjusting spark plug gap is not required between replacement intervals.

  • Measure spark plug gap. when it exceeds the limit, replace spark plug even if it is with in the specified replacement mileage. Refer to Spark Plug.

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