Nissan Juke F15. Manual - part 652

EM-162

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

COMPONENT PARTS

- 2WD

- AWD

SPECIFICATION

Drive Belt

INFOID:0000000012197346

• A serpentine belt 

*

 that drives all auxiliary devices with a single belt is used.

*

Serpentine

• The drive belt auto tensioner is installed between the crank pulley and alternator.

SPECIFICATION

• The belt used is a V-ribbed 6PK belt.

• The drive belt auto tensioner mechanism contains a coil spring and uses the idler pulley to maintain appro-

priate belt tension at all times, making regular belt tension adjustment unnecessary.

1

: Catalyst converter (supercharger 
exit)

2

: Catalyst converter adapter

3

: Front tube

4

: Heated oxygen sensor 2

5

: Three-way catalyst converter (un-
der floor)

JSBIA5738ZZ

1

: Catalyst converter (supercharger 
exit)

2

: Catalyst converter adapter

3

: Heated oxygen sensor 2

4

: Front tube

5

: Three-way catalyst converter (un-
der floor)

JSBIA5739ZZ

Installation position

Supercharger exit

Underfloor

Structure

Monolithic (ceramic)

Monolithic (ceramic)

Capacity

liters (US qt, Imp qt)

0.92 (1, 6/8)

1.20 (1-2/8, 1)

Catalyst precious metal 
types

Palladium, rhodium

Palladium, rhodium

1.

Alternator

2.

Drive belt auto tensioner

3.

Crankshaft pulley

4.

A/C compressor

5.

Water pump

6.

Drive belt

A. Usable range

B. Range for installation of new drive 

belt

C. Indicator

JSBIA5907ZZ

COMPONENT PARTS

EM-163

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

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High-pressure Fuel Pump

INFOID:0000000012197347

• A single-plunger type compact high-pressure fuel pump is used.

• The high-pressure fuel pump (1) is installed to thecamshaft bracket

rear, and is driven by a special cam that is installed on the cam-

shaft (EXH).

For details of operation and control, refer to 

EC-608, "High Pressure

Fuel Pump"

.

Rocker Cover

INFOID:0000000012197348

• A plastic rocker cover is used.

• The rocker cover includes a part where the oil filler cap is installed

and a screw for mounting the ignition coil.

Camshaft Sprocket

INFOID:0000000012197349

• A sintered alloy sprocket is used for each sprocket. The sprocket teeth are induction-hardened for improved

wear resistance.

• The camshaft sprockets used (both INT and EXH) are equipped

with integrated vane-type valve timing controller.

Camshaft

INFOID:0000000012197350

CAMSHAFT

Description

A

: To fuel rail

B

: From low-pressure fuel pump

JPBIA5011ZZ

A

: Ignition coil mounting screw

B

: Oil filler cap installation part

JPBIA5012ZZ

1

: Camshaft sprocket (EXH)

2

: Exhaust valve timing controller

3

: Intake valve timing controller

4

: Camshaft sprocket (INT)

JSBIA5741ZZ

EM-164

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

COMPONENT PARTS

• A special cast-iron camshaft is used.

• The cam lobe is processed with a nano-finish to reduce friction.

• A signal plate is installed at the rear end of each camshaft.

SPECIFICATION

• The cam profile delivers the optimal characteristics with a good balance of engine output performance, driv-

ability, fuel economy, and other performance.

• *1: Idling at coolant temperature of 60

°C or more

• *2: At maximum operation
• *3: At coolant temperature of 60

°C or less, or at engine start

• A valve timing control (VTC) system 

*

 is used that can change the camshaft phase as needed according to

the hydraulic pressure while maintaining a constant camshaft operating angle.

For control, refer to 

EC-639, "INTAKE VALVE TIMING CONTROL : System Description"

 (exhaust valve tim-

ing control), 

EC-642, "EXHAUST VALVE TIMING CONTROL : System Description"

 (intake valve timing con-

trol).

*

: Valve timing control (VTC) system

1

: Camshaft (EXH)

2

: Camshaft (INT)

: Engine front

JPBIA5014ZZ

Valve timing

: Intake valve
: Exhaust valve

VTC Minimum phasing (Mechanical)

VTC Maximum phasing (Mechanical)

Engine start (Mechanical)

a

EXH valve 

opening angle

b

INT valve 

opening angle

c

INT open

d

INT closed

e

EXH closed

f

EXH open

VTC Minimum phasing 

(Mechanical)

*1

212

236

ATDC34

ABDC90

ATDC3

BBDC29

VTC Maximum phasing 

(Mechanical)

*2

BTDC31

ABDC25

ATDC63

ABDC31

Engine start (Mechanical)

*3

BTDC2

ABDC54

ATDC3

BBDC29

JSBIA5742ZZ

JSBIA5743ZZ

JSBIA5744ZZ

COMPONENT PARTS

EM-165

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

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The valve timing can be controlled continually to the desired position within the movable range. This allows

optimal valve timing control according to the engine speed and load, greatly improving low and medium-

speed torque.

CAMSHAFT BRACKET

• Made of die-cast aluminum, and includes five journal supports for

each camshaft.

• Integrates the camshaft bracket to reduce the number of parts.

Valve

INFOID:0000000012197351

DESCRIPTION

A set of four valves is used for each cylinder: two intake valves and two exhaust valves.

VALVE

Description

Valves containing metallic sodium are used for the exhaust valves.

The valve stem is hollow and contains metallic sodium which has

high specific heat (absorbs a large amount of heat) and liquifies at

the temperatures at when the engine is running. This lowers the

valve temperature and improves intake efficiency.

NOTE:

With a valve containing metallic sodium, the opening and closing

motion of the valve agitates the liquefied metallic sodium. Heat from

the combustion chamber and exhaust port is released to the valve

guide, lowering the valve head temperature.

Specification

PRECAUTIONS FOR HANDLING VALVES CONTAINING METALLIC SODIUM

WARNING:

• Because metallic sodium is a strong alkali and there is the danger of violent chemical reactions,

work carefully and use sufficient caution when handling or disposing of it.

(Contact with the eye may cause blindness. Contact with the skin may cause burns. There is also the

risk of fire caused by chemical reaction.)

The metallic sodium contained in the valve is safe as long as it is not exposed to air.

• When scrapping a valve, or when a valve is damaged, remove the valve, process (neutralize) the

metallic sodium, and process the wastewater.

• Never deliberately break a valve or remove the metallic sodium.

VALVE LIFTER

Location

Intake

Exhaust

Valve lift

[mm(in)]

8.90 (0.35)

7.20 (0.28)

Overlap

(deg)

(

−31) – (+94)

: Engine front

JSBIA5745ZZ

JSBIA1699GB

Location

Intake

Exhaust

Valve

Head diameter

[mm(in)]

φ31.2 (1.22)

φ25.6 (1.01)

Stem diameter

[mm(in)]

φ5.5 (0.21)