Nissan Frontier D40. Manual - part 577

EM-40

< ON-VEHICLE REPAIR >

[QR25DE]

FUEL INJECTOR AND FUEL TUBE

6.

Remove fuel injector from fuel tube as follows:

a.

Carefully open and remove clip.

b.

Remove fuel injector from fuel tube by pulling straight.

CAUTION:

• Be careful with remaining fuel that may leak out from fuel

tube.

• Do not damage fuel injector nozzles during removal.
• Do not bump or drop fuel injectors.
• Do not disassemble fuel injectors.

INSTALLATION

1.

Install new O-rings to fuel injector, paying attention to the following.

CAUTION:

• Upper and lower O-rings are different colors.

• Handle O-ring with bare hands. Do not wear gloves.
• Lubricate O-ring with new engine oil.
• Do not clean O-ring with solvent.
• Make sure 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. 
• Do not twist or stretch O-ring. If O-ring was stretched while it was being attached, allow it to

retract before inserting it into fuel tube.

• Insert new O-ring straight into fuel tube. Do not angle or twist it.

PBIC2999E

Fuel tube side

: Black

Nozzle side

: Green

FUEL INJECTOR AND FUEL TUBE

EM-41

< ON-VEHICLE REPAIR >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

2.

Install fuel injector to fuel tube.

a.

Insert clip into clip mounting groove on fuel injector.
• Insert new clip so that protrusion of fuel injector matches cut-

out of clip.

CAUTION:

• Do not reuse clip. Replace it with a new one.
• Do not allow the clip to interfere with the O-ring. If interfer-

ence occurs, replace O-ring.

b.

Insert the fuel injector into the fuel tube with the clip attached.
• Insert it while matching it to the axial center.
• Insert fuel injector so that protrusion of fuel tube matches cut-

out of clip.

• Make sure that fuel tube flange is securely fixed in flange fixing

groove on clip.

c.

Make sure that installation is complete by checking that the fuel
injector does not rotate or come off.
• Make sure that protrusions of the fuel injectors are aligned

with cutouts of clips after installation.

3.

Install fuel tube and fuel injector assembly as follows:

CAUTION:

Do not let the tip of the injector nozzle come in contact with other parts.

a.

Insert the tip of each fuel injector into intake manifold.

b.

Tighten bolts in two steps in numerical order as shown.

4.

Connect harness connectors to fuel injectors.

5.

Install intake manifold. Refer to 

EM-27, "Removal and Installation"

.

6.

Connect quick connector at the engine side as follows:

a.

Check the connection for foreign material and damage.

b.

Align center to insert quick connector straight into fuel tube.
NOTE:
The figure shows the engine side as an example.
• Insert quick connector to fuel tube until the top spool on fuel

tube is inserted completely and the second level spool is posi-
tioned slightly below quick connector bottom end.

CAUTION:

• Hold (A) position as shown when inserting fuel tube into

quick connector.

• Carefully align center to avoid inclined insertion to pre-

vent damage to O-ring inside quick connector.

• Insert until you hear a “click” sound and actually feel

the engagement.

• To avoid misidentification of engagement with a similar sound, be sure to perform the next

step.

PBIC3000E

Fuel tube bolts

 1st step

: 12.8 N·m (1.3 kg-m, 9 ft-lb)

2nd step

: 28.0 N·m (2.9 kg-m, 21 ft-lb)

PBIC2998E

KBIA0272E

EM-42

< ON-VEHICLE REPAIR >

[QR25DE]

FUEL INJECTOR AND FUEL TUBE

c.

Before clamping fuel feed hose with quick connector cap, pull quick connector hard by hand holding (A)
position. Make sure it is completely engaged (connected) so that it does not come out from fuel feed tube. 

d.

Install quick connector cap to quick connector connection.
(engine side)
• Install so that the arrow mark on the side faces up.

CAUTION:

• Make sure that quick connector and fuel tube are securely

fit into quick connector cap installation groove.

• If quick connector cap cannot be installed smoothly,

quick connector may have not been installed correctly.
Check the connection again.

7.

Install fuel feed hose to hose clamp.

8.

Installation is in the reverse order of removal after this step.

INSPECTION AFTER INSTALLATION

Check on Fuel Leaks

1.

Apply fuel pressure to fuel lines by turning ignition switch ON (with the engine stopped). Then check for
fuel leaks at the connections.

2.

Start the engine and rev it up and check for fuel leaks at the connections.

WARNING:

Do not touch engine immediately after stopping, as engine becomes extremely hot.
NOTE:
Use mirrors for checking at points out of clear sight.

PBIC2348E

TIMING CHAIN

EM-43

< ON-VEHICLE REPAIR >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

TIMING CHAIN

Exploded View

INFOID:0000000005274283

1.

O-ring

2.

Camshaft sprocket (INT)

3.

Camshaft sprocket (EXH)

4.

Chain tensioner

5.

Spring

6.

Chain tensioner plunger

7.

Timing chain slack guide

8.

Timing chain

9.

Front cover

10. Chain guide

11.

Intake valve timing control solenoid 
valve

12. Intake valve timing control cover

13. Oil ring

14. Front oil seal

15. Crankshaft pulley

16. Crankshaft pulley bolt

17. Crankshaft sprocket

18. Spacer

19. Balancer unit timing chain tensioner

20. Timing chain tension guide

21. Balancer unit

22. Balancer unit sprocket

23. Balancer unit timing chain

A.

Refer to 

EM-44, "Removal and Instal-

lation"

B.

Refer to 

EM-44, "Removal and Instal-

lation"

WBIA0834E