Nissan X-Trail 32. Instruction — part 1038

FUEL INJECTOR AND FUEL TUBE

EM-49

< REMOVAL AND INSTALLATION >

[MR20DD]

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• To avoid the danger of being scalded, never drain engine coolant when engine is hot.

REMOVAL

1.

Release the fuel pressure. Refer to

EC-152, "Work Procedure"

.

2.

Remove oil level gauge. Refer to

EM-106, "Exploded View"

.

3.

Remove intake manifold. Refer to

EM-33, "Exploded View"

.

4.

Remove alternator. Refer to

CHG-44, "MR20DD : Exploded View"

.

5.

Remove oil level gauge guide. Refer to

EM-106, "Exploded View"

.

6.

Remove fuel rail cover, and then remove fuel rail insulator.

7.

Remove fuel tube and fuel rail connector. Refer to

EM-43, "Exploded View"

.

8.

Disconnect fuel pressure sensor harness connector.

9.

Disconnect fuel injector harness connector.

10. Remove fuel pressure sensor, if necessary.
11. Remove fuel rail.

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

CAUTION:

• When removing, be careful to avoid any interference with fuel

injector.

• Use a shop cloth to absorb any fuel leakage from fuel rail.

12. Remove fuel injector from cylinder head as per the following.

CAUTION:

• Be careful with remaining fuel that may go out from fuel rail.
• Be careful not to damage injector nozzles during removal.
• Never bump or drop fuel injector.
• Never disassemble fuel injector.

a.

Remove injector holder.

b.

Install an remover [SST: KV10119600 (—)] (A) to the injector
connector side so that cutout

of injector remover faces the

injector connector side.

• Hook pawl portion

of injector remover [SST: KV10119600

(—)] (A) to groove portion

of injector

: Engine front

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EM-50

< REMOVAL AND INSTALLATION >

[MR20DD]

FUEL INJECTOR AND FUEL TUBE

c.

Press down body portion of injector remover [SST: KV10119600
(—)] (A) until it contacts cylinder head.

d.

Tighten injector remover [SST: KV10119600 (—)] clockwise and
remove injector from cylinder head.

e.

Cut seal ring

while pinching it. Be careful not to damage injec-

tor.

INSTALLATION

CAUTION:

Do not reuse O-rings.

1.

Install seal ring to fuel injector as per the following:

CAUTION:

• Handle seal ring with bare hands. Never wear gloves.
• Never apply engine oil to seal ring.
• Never clean seal ring with solvent.

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FUEL INJECTOR AND FUEL TUBE

EM-51

< REMOVAL AND INSTALLATION >

[MR20DD]

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a.

Install an injector seal drift set [SST: KV101197S0 (—)] (A) to
fuel injector

.

b.

Set seal ring

to injector seal drift set [SST: KV101197S0 (—)]

.

c.

Straightly insert seal ring

, which is set in step 2, to fuel injec-

tor as shown in the figure and install.

CAUTION:

Be careful that seal ring does not exceed the groove portion
of fuel injector.

d.

Insert injector seal drift set [SST: KV101197S0 (—)] (A) to injec-
tor and rotate clockwise and counterclockwise by 90

°

while

pressing seal ring to fit it.
NOTE:
Compress seal ring, because this operation is for rectifying
stretch of seal ring caused by installation and for preventing
sticking when inserting injector into cylinder head.

2.

Install O-ring and backup ring to fuel injector. When handing new O-ring and backup ring, paying attention
to the following caution 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.
• When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to

twist or stretch O-ring. If O-ring was stretched while it was being attached, never insert it quickly
into fuel tube.

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< REMOVAL AND INSTALLATION >

[MR20DD]

FUEL INJECTOR AND FUEL TUBE

• Insert new O-ring straight into fuel rail. Never decenter or twist it.
• Always install the back up ring

in the right direction as

instructed.

3.

Install fuel injector

to fuel rail

as per the following:

a.

Install fuel injector holder

to fuel injector.

CAUTION:

• Never reuse fuel injector holder. Replace it with a new

one.

• Be careful to keep fuel injector holder from interfering

with O-ring. If interference occurs, replace O-ring.

b.

Insert fuel injector into fuel rail with fuel injector holder attached.
• Insert it while matching it to the axial center.
• Insert so that protrusion

of fuel injector is aligned to cutout

.

c.

Check that installation is complete by checking that fuel injector
does not rotate or come off.
• Check that protrusions of fuel injectors and fuel rail are aligned

with cutouts of clips after installation.

4.

Install fuel rail and fuel injector assembly to cylinder head.
• Tighten mounting bolts and nuts in two steps in numerical

order as shown in the figure.

5.

Connect injector harness connector.

6.

Install fuel pressure sensor, if removed.

7.

Install fuel rail insulator.

CAUTION:

• As covering part of fuel tube connector at the back end of common rail can easily move because

of its shape, do not remove it before installation.

• Install the insulator so that it is placed under lower side of intake manifold flange.

8.

Install in the reverse order of removal after this step.

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: O-ring (blue)

: Backup ring

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: Engine front

1st step

: 10.0 N·m (1.0 kg-m, 89 in-lb)

2nd step

: 20.5 N·m (2.1 kg-m, 15 ft-lb)

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