Nissan Qashqai J11. Manual - part 55

 

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Nissan Qashqai J11. Manual - part 55

 

 

HIGH PRESSURE FUEL PUMP AND FUEL HOSE

EM-159

< REMOVAL AND INSTALLATION >

[MR20DD]

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HIGH PRESSURE FUEL PUMP AND FUEL HOSE

Exploded View

INFOID:0000000010715481

CAUTION:

Never remove or disassemble parts unless instructed as shown in the figure.

Removal and Installation

INFOID:0000000010715482

REMOVAL

WARNING:

• Be sure to read 

EM-124, "Precaution for Handling High Pressure Fuel System"

 when working on the

high pressure fuel system.

• Put a “CAUTION: FLAMMABLE” sign in the workshop.

High pressure fuel pump insulator

High pressure fuel pump

O-ring

High pressure fuel pump lifter

Fuel rail connector

Fuel tube

Bracket

Fuel pump connector protector

Fuel feed hose

To centralized under-floor piping

: Engine front

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

: Always replace after every disassembly.

: Should be lubricated with oil.

: Indicates that the parts is connected at points with same symbols in actual vehicle.

JSBIA4597GB

EM-160

< REMOVAL AND INSTALLATION >

[MR20DD]

HIGH PRESSURE FUEL PUMP AND FUEL HOSE

• Be sure to work in a well ventilated area and furnish workshop with a CO

fire extinguisher.

• Never smoke while servicing fuel system. Keep open flames and sparks away from the work area.
• To avoid the danger of being scalded, never drain engine coolant when engine is hot.

1.

Release fuel pressure. Refer to 

ECM-135, "Work Procedure"

.

2.

Remove fuel pump connector protector, and remove high pressure fuel pump insulator.

3.

Disconnect quick connector 

 with the following procedure.

a.

Disconnect fuel feed hose 

 from bracket hose clamp 

.

b.

Disengage 

 and pull up 

 the pawl of the fuel feed hose con-

nector retainer 

 to disconnect the fuel feed hose from high

pressure fuel pump.
NOTE:
If the fuel feed hose is stuck, hold the fuel pipe by hand and dis-
connect it by pushing and pulling.

CAUTION:

• Keep parts away from heat source. Especially, be careful

when welding is performed around them.

• Never expose parts to battery electrolyte or other acids.
• Never bent or twist connection between quick connector

and fuel feed hose (with damper) during installation/
removal.

• Pull quick connector holding 

.

• Never remove the retainer.
• Prepare a tray and waste beforehand as fuel leaks out.
• Never pull with lateral force applied. O-ring inside quick

connector may be damaged.

• To prevent damage to each joint and protect it from the

entry of foreign matter, cover the joint with plastic bag 
or an equivalent.

4.

Remove intake manifold. Refer to 

EM-149, "Removal and Installation"

.

5.

Remove fuel tube.

6.

Remove fuel rail connector.

JPBIA4376ZZ

Retainer color

: Red

JPBIA4377ZZ

JPBIA4378ZZ

HIGH PRESSURE FUEL PUMP AND FUEL HOSE

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7.

Remove high pressure fuel pump 

 and lifter.

CAUTION:

To prevent damage to high pressure fuel pump and cam-
shaft bracket, loosen bolt 

 alternately by one turn at a

time until the reaction force applied on the high pressure
fuel pump disappears.

INSTALLATION

CAUTION:

• Do not reuse O-rings.
• To prevent damage to parts due to generated abnormal stress and eccentric load, always observe

the installation procedure.

1.

Install high pressure fuel pump according to the following procedure.

a.

Check the orientation of pump cam from the mounting area
(view arrow) of high pressure fuel pump.

b.

Aim pump cam at the BDC area (arrow position).

NOTE:
For BDC area, anywhere within the area indicated by arrow can
be accepted.

c.

Install O-ring to high pressure fuel pump. When handing new O-ring, paying attention to the following cau-
tion items:

CAUTION:

• Do not reuse O-ring.
• Handle O-ring with bare hands. Never wear gloves.
• Lubricate O-ring with new engine oil.
• Never clean O-ring with solvent.
• Check that O-ring and its mating part are free of foreign material.
• Never damage O-ring with tools and fingernails during the installation. In addition, twisting or

stretching O-ring is not allowed. If O-ring is stretched during the installation to high pressure
fuel pump, never install high pressure fuel pump immediately.

d.

Install high pressure fuel pump lifter.

e.

Apply oil to the fitting area of high pressure fuel pump O-ring and camshaft bracket side to install high
pressure fuel pump.

f.

Install high pressure fuel pump. To prevent damage to high pressure fuel pump and camshaft bracket, the
following instructions must be observed.

JSBIA1673ZZ

JPBIA4379ZZ

: Camshaft (EXH)

JPBIA4380ZZ

EM-162

< REMOVAL AND INSTALLATION >

[MR20DD]

HIGH PRESSURE FUEL PUMP AND FUEL HOSE

CAUTION:

• Temporarily tighten bolt 

 by hand. Alternately tighten

bolt by one turn at a time until high pressure fuel pump
reaches camshaft bracket.

• After a pump flange sitting, tighten the bolts to the speci-

fied torque.

2.

Connect fuel feed hose with the following procedure, and them install the fuel feed hose.

a.

Check no foreign substances are deposited in and around matching pipe and quick connector, and no
damage on them.

b.

Quick connector shall be inserted gradually, aligning with the axis of the matching pipe.

c.

Insert the retainer until it clicks and check the retainer is locked.
After insertion, pull the connector and check that the connector
is locked.

CAUTION:

If retainer cannot be installed smoothly, quick connector
may be have not been installed correctly. Check connection
again.

d.

After attaching the quick connector and fix the hose to the clamp.

3.

Install new fuel rail connector 

.

CAUTION:

• Never reuse fuel rail connector.
• Handle O-ring with bare hands. Never wear gloves.
• Lubricate O-ring with new engine oil.
• Never clean O-ring with solvent.
• Check that O-ring and its mating part are free of foreign

material.

• Never scratch O-ring with tools or fingernails when

installing fuel rail connector.

• Insert new fuel rail connector straight into fuel rail. Never decenter or twist the fuel rail connec-

tor during insertion.

4.

Install the fuel tube with the following procedure.

CAUTION:

• When removing fuel tube, always replace fuel rail connector together with fuel tube.
• Never reuse fuel tube.
• Never use fuel tube if its terminal tip is damaged.
• Observe the tightening order and the tightening torque.

: High pressure fuel pump

JSBIA1673ZZ

: Lock position

: Unlock position 

JPBIA4381ZZ

: O-ring

JSBIA1674ZZ

 

 

 

 

 

 

 

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