Nissan Qashqai (2007-2010). Manual — part 56

EM-172

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[MR20DE]

TIMING CHAIN

- Start engine. With engine speed increased, check again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration.

NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide may generate a
pounding noise during and just after the engine start. However, this does not indicate an unusualness. Noise
will stop after hydraulic pressure rises.

• Warm up engine thoroughly to make sure there is no leakage of fuel, or any oil/fluids including engine oil and

engine coolant.

• Bleed air from lines and hoses of applicable lines, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the

specified level, if necessary.

Summary of the inspection items:

* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.

Item

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Other oils and fluid*

Level

Leakage

Level

Fuel

Leakage

Leakage

Leakage

CAMSHAFT

EM-173

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CAMSHAFT

Exploded View

INFOID:0000000000893950

Removal and Installation

INFOID:0000000000893951

CAUTION:

The rotating direction in the text indicates all directions seen from the engine front.

REMOVAL

1.

Remove the following parts.
• Intake manifold: Refer to

EM-146, "Exploded View"

.

• Rocker cover: Refer to

EM-160, "Exploded View"

.

• Front cover and timing chain related parts: Refer to

EM-162, "Exploded View"

.

NOTE:

1.

O-ring

2.

Camshaft position sensor (PHASE)

3.

Camshaft bracket

4.

Camshaft sprocket (EXH)

5.

Camshaft sprocket (INT)

6.

Camshaft (EXH)

7.

Camshaft (INT)

8.

Signal plate

9.

Valve lifter (EXH)

10. Valve lifter (INT)

A.

Refer to

EM-173

Refer to

GI-4, "Components"

for symbols shown in the figure.

JPBIA0292GB

EM-174

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[MR20DE]

CAMSHAFT

Removal of balancer unit related part is not necessary.

2.

Remove camshaft position sensor (PHASE) from camshaft bracket.

CAUTION:

• Handle camshaft position sensor (PHASE) carefully and avoid impacts.
• Never disassemble camshaft position sensor (PHASE).
• Never place sensor where it is exposed to magnetism.

3.

Put the matching mark (A) on the camshaft sprocket (INT) (2)
and the camshaft bracket (1) as shown in the figure.

NOTE:
It prevents the knock pin of the camshaft (INT) from engaging
with the incorrect pin hole when installing the camshaft sprocket
(INT).

4.

Remove camshaft sprockets (INT) (1) and (EXH) (2).
• Secure hexagonal part (A) of camshaft with a wrench. Loosen

camshaft sprocket mounting bolts and remove camshaft
sprocket.

CAUTION:

• Never rotate crankshaft or camshaft while timing chain

is removed. It causes interference between valve and
piston.

• Never loosen the mounting bolts with securing anything

other than the camshaft hexagonal part or with tension-
ing the timing chain.

5.

Remove camshaft bracket with the following procedure:

a.

Loosen mounting bolts in reverse order as shown in the figure.

b.

Cut liquid gasket by prying the position (

) shown in the figure,

and then remove the camshaft bracket.

CAUTION:

• Be careful not to damage the mating surface.
• A more adhesive liquid gasket is applied compared to pre-

vious types when shipped, so it should not be forced off
the position not specified.

6.

Remove camshafts.

7.

Remove valve lifters.
• Identify installation positions, and store them without mixing them up.

: Engine front

PBIC3992J

PBIC3454J

: Engine front

PBIC3176J

: Engine front

PBIC3358J

CAMSHAFT

EM-175

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8.

Remove signal plate from camshaft (INT), if necessary.

INSTALLATION

1.

Install valve lifters.
• Install them in the original positions.

2.

Install camshafts.
• Clean camshaft journal to remove any foreign material.
• Distinguish between the intake and the exhaust by looking at

the different shapes of the front and rear ends of the camshaft
or using the identification colors (A) and (B).

• Install camshafts so that camshaft dowel pins (A) on the front

side are positioned as shown in the figure.

NOTE:
Though camshaft does not stop at the positions as shown in
the figure, for the placement of cam nose, it is generally
accepted camshaft is placed for the same direction of the fig-
ure.

3.

Install camshaft bracket with the following procedure:

a.

Remove foreign material completely from camshaft bracket backside and from cylinder head installation
face.

b.

Apply liquid gasket (A) to camshaft bracket as shown in the fig-
ure.

Use Genuine Liquid Gasket or equivalent.

1

: Camshaft (EXH)

2

: Camshaft (INT)

Identification color

A

B

Camshaft (EXH)

—

White

Camshaft (INT)

White

—

1

: Camshaft (EXH)

2

: Camshaft (INT)

PBIC3188J

PBIC3189J

B

: Plug hole inner wall

: Engine front

: Engine outside

PBIC3964E