Nissan Altima HL32 Hybrid. Manual - part 376

EM-18

< ON-VEHICLE MAINTENANCE >

[QR25DE]

AIR CLEANER FILTER

AIR CLEANER FILTER

Removal and Installation

INFOID:0000000004211239

CHANGING THE AIR CLEANER ELEMENT

1. Unhook the air cleaner case side clips.
2. Remove the air cleaner element.
3. Install a new air cleaner element.
4. Installation is in the reverse order of removal.

AWBIA0048ZZ

1.

Air duct hose

2.    Front air duct

3.

Air cleaner mounting bracket

4.

Air cleaner assembly

5.

Mass air flow sensor

A. To electronic throttle control actuator

CAMSHAFT VALVE CLEARANCE

EM-19

< ON-VEHICLE MAINTENANCE >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

CAMSHAFT VALVE CLEARANCE

Camshaft Valve Clearance

INFOID:0000000004495145

INSPECTION

• Perform this inspection as follows after removal, installation, or replacement of the camshaft or any valve-

related parts, or if there are any unusual engine conditions due to changes in valve clearance over time

(starting, idling, and/or noise). 

1. Warm up the engine, then stop it.
2. Remove fender protector side cover (RH) using power tool. 
3. Remove the rocker cover using power tool.

Refer to 

EM-38, "Removal and Installation"

.

4. Turn crankshaft pulley in normal direction (clockwise when

viewed from front) to align TDC identification mark (without paint

mark) with timing indicator.

5. At this time, check that the both intake and exhaust cam lobes of

No. 1 cylinder face outside.

• If they do not face outside, turn crankshaft pulley once more.

6. By referring to the figure (locations indicated with black arrow),

measure valve clearances with a feeler gauge at locations

marked X as shown in the table below.

• No.1 cylinder compression TDC.

KBIA0190E

KBIA0400J

Cylinder

No.1

No.2

No.3

No.4

     Valve

 INT

EXH

 INT

EXH

 INT

EXH

 INT

EXH

Measurable

×

×

×

x

KBIA0248E

EM-20

< ON-VEHICLE MAINTENANCE >

[QR25DE]

CAMSHAFT VALVE CLEARANCE

• Use a feeler gauge to measure the clearance between valve

and camshaft. 

*Reference data at approximately 80

°C (176°F)

CAUTION:

If inspection was carried out with cold engine, check that values with fully warmed up engine are

still within specifications.

7. Turn crankshaft one complete revolution (360

°) and align mark on crankshaft pulley with pointer. 

8. By referring to the figure (locations indicated with black arrow),

measure valve clearances with a feeler gauge at locations

marked X as shown in the table below. 

• No.4 cylinder compression TDC.

9. If out of specifications, adjust as follows.

ADJUSTMENT

• Perform adjustment depending on selected head thickness of valve lifter.

• The specified valve lifter thickness is the dimension at normal temperatures. Ignore dimensional differences

caused by temperature. Use the specifications for hot engine condition to adjust.

1. Remove camshaft. Refer to 

EM-40, "Removal and Installation"

.

2. Remove the valve lifters at the locations that are outside the standard.
3. Measure the center thickness of the removed valve lifters with a

micrometer.

4. Use the equation below to calculate valve lifter thickness for replacement.

• Valve lifter thickness calculation.

t = t1 + (C1 - C2)

t = Thickness of replacement valve lifter.

t1 = Thickness of removed valve lifter.

C1 = Measured valve clearance.

C2 = Standard valve clearance.

Valve clearance standard:
Cold

Intake

: 0.24 - 0.32 mm (0.009 - 0.013 in)

Exhaust

: 0.26 - 0.34 mm (0.010 - 0.013 in)

Hot*

Intake

: 0.304 - 0.416 mm (0.012 - 0.016 in)

Exhaust

: 0.308 - 0.432 mm (0.012 - 0.017 in)

Cylinder

No.1

No.2

No.3

No.4

    Valve

 INT

EXH

 INT

EXH

 INT

EXH

 INT

EXH

Measurable

 x

×

x

×

KBIA0185E

KBIA0249E

KBIA0057E

CAMSHAFT VALVE CLEARANCE

EM-21

< ON-VEHICLE MAINTENANCE >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

• Thickness of a new valve lifter can be identified by stamp

marks on the reverse side (inside the cylinder).

Stamp mark 696 indicates a thickness of 6.96 mm (0.2740 in)

Available thickness of valve lifter: 26 sizes with a range of

7.88 to 8.38 mm (0.3102 to 0.3299 in), in steps of 0.02 mm

(0.0008 in), when assembled at the factory.

5. Install the selected valve lifter.
6. Install camshaft.
7. Manually turn crankshaft pulley a few turns. 
8. Check that valve clearances for cold engine are within specifica-

tions, by referring to the specified values.

9. After completing the repair, check valve clearances again with the specifications for warmed engine. Use

a feeler gauge to measure the clearance between the valve and camshaft. Make sure the values are

within specifications.

*: Reference data at approximately 80

°C (176°F)

Valve clearance standard:
Cold

Intake

: 0.24 - 0.32 mm (0.009 - 0.013 in)

Exhaust

: 0.26 - 0.34 mm (0.010 - 0.013 in)

Hot*

Intake

: 0.304 - 0.416 mm (0.012 - 0.016 in)

Exhaust

: 0.308 - 0.432 mm (0.012 - 0.017 in)

KBIA0119E