Nissan X-Trail 32. Manual - part 1037

HIGH PRESSURE FUEL PUMP AND FUEL HOSE

EM-45

< REMOVAL AND INSTALLATION >

[MR20DD]

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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.

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: Camshaft (EXH)

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EM-46

< 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

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: Lock position

: Unlock position 

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: O-ring

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HIGH PRESSURE FUEL PUMP AND FUEL HOSE

EM-47

< REMOVAL AND INSTALLATION >

[MR20DD]

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a.

Temporarily tighten flare nut 

 and 

 of fuel tube 

 until

seated.

CAUTION:

When temporarily tightening flare nut, place pipe in the cen-
ter of the nut inner diameter.

b.

Temporarily tighten bolt 

 until the seat of bracket is seated.

c.

Tighten flare nut 

 and 

 in alphabetical order.

CAUTION:

Always fit the tool completely with the nut.

d.

Tighten bolt 

.

5.

Install in the reverse order of removal after this step.

Inspection

INFOID:0000000010783700

INSPECTION AFTER INSTALLATION

Check for Fuel Leakage

1.

Turn ignition switch “ON” (with the engine stopped). With fuel pressure applied to fuel piping, check that
there is no fuel leakage at connection points.
NOTE:
Use mirrors for checking at points out of clear sight.

2.

Start the engine. With engine speed increased, check again that there is no fuel leakage at connection
points.

CAUTION:

Never touch the engine immediately after it is stopped because the engine is extremely hot.

: High pressure fuel pump

: Fuel rail connector

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EM-48

< REMOVAL AND INSTALLATION >

[MR20DD]

FUEL INJECTOR AND FUEL TUBE

FUEL INJECTOR AND FUEL TUBE

Exploded View

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CAUTION:

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

Removal and Installation

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WARNING:

• Be sure to read 

EM-7, "Precaution for Handling High Pressure Fuel System"

 when working on the

high pressure fuel system.

• Put a “CAUTION: FLAMMABLE” sign in the workshop.
• Be sure to work in a well ventilated area and furnish workshop with a CO

2

 fire extinguisher. 

• Never smoke while servicing fuel system. Keep open flames and sparks away from the work area.

Holder

Seal ring (white)

Backup ring

O-ring (blue)

Fuel injector

Stud bolt

Fuel rail

Fuel rail insulator

Fuel rail cover

Fuel pressure sensor

Gasket

To fuel rail connector and fuel tube. 
Refer to 

EM-43

.

Comply with the assembly procedure 
when tightening. Refer to 

EM-48

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

: Always replace after every disassembly.

: Should be lubricated with oil.

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