2004 INFINITI FX35 ECU

EM-238
[VK45DE]
ENGINE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45

After disconnection, plug the opening on transmission side.
11. Remove front drive shaft (both side). Refer to FAX-12, "
FRONT DRIVE SHAFT" .
12. Remove front propeller shaft. Refer to PR-4, "
FRONT PROPELLER SHAFT" .
13. Remove three way catalyst (both bank). Refer to EM-178, "
EXHAUST MANIFOLD AND THREE WAY
CATALYST" .
Removal Work
1. Install engine slingers into front of left bank cylinder head and
front of right bank cylinder head.
2. Lift with hoist and secure engine in position.
3. Use manual lift table caddy (commercial service tool) or equivalently rigid tool such as transmission jack.
Securely support bottom of suspension member and transmission.
CAUTION:
Put a piece of wood or something similar as the supporting surface, secure a completely stable
condition.
4. Remove front suspension member mounting nuts with power tool. Refer to FSU-6, "
FRONT SUSPEN-
SION ASSEMBLY" .
5. Carefully lower jack, or raise lift to remove engine, transmission
front final drive and front suspension member assembly. When
performing work, observe the following caution:
CAUTION:

Confirm there is no interference with vehicle.

Make sure that all connection points have been discon-
nected.

Keep in mind the center of vehicle gravity changes. If
necessary, use jack(s) to support vehicle at rear jacking
point(s) to prevent it from falling it off the lift.
Separation Work
1. Change engine slinger installing to cylinder head (right bank).
NOTE:
In order to keep secure position when hoisting engine.
2. Remove engine mounting insulators (RH and LH) under side nut with power tool.
3. Lift with hoist and separate engine and transmission assembly from front suspension member.
CAUTION:

Before and during this lifting, always check if any harnesses are left connected.

Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
4. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" . Slinger bolts:
:33.4 N·m (3.4 kg-m, 25 ft-lb)
PBIC1556E
PBIC1557E
Slinger bolts:
:33.4 N·m (3.4 kg-m, 25 ft-lb)
PBIC2447E

ENGINE ASSEMBLY
EM-239
[VK45DE]
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Revision: 2004 November 2004 FX35/FX45
5. Remove starter motor. Refer to SC-10, "STARTING SYSTEM" .
6. Separate engine from transmission assembly. Refer to AT- 2 6 9 , "
Removal and Installation (AWD models)"
.
7. Remove front final drive from engine. Refer to FFD-10, "
FRONT FINAL DRIVE ASSEMBLY" .
8. Remove engine mounting insulators (RH and LH) and brackets (RH and LH) from engine with power tool.
9. Remove engine rear member and engine mounting insulator (rear) from transmission.
INSTALLATION
Note to the following, and install in the reverse order of removal.

Where positioning pin is used, be sure to securely insert it into the hole of mating part.

When installing engine mount brackets (RH and LH) to cylinder
block, tighten two upper bolts (shown as “A” in the figure) first.
Then tighten two lower bolts (shown as “B” in the figure).
INSPECTION AFTER INSTALLATION

Before starting engine, check the levels of engine coolant, engine oil and working fluid. If less than
required quantity, fill to the specified level.

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of engine coolant, engine oil, working fluid,
fuel and exhaust gas.

Bleed air from passages in pipes and tubes of applicable lines, such as in cooling system.

After cooling down engine, again check amounts of engine coolant, engine oil and working fluid. Refill to
specified level, if necessary.
Summary of the inspection items:
PBIC2365E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Working fluid Level Leakage Level
Fuel — Leakage —
Exhaust gas — Leakage —

EXHAUST SYSTEM
EX-5
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Revision: 2004 November 2004 FX35/FX45

Tighten main muffler mounting bracket bolts in numerical order
as shown in the figure.
CAUTION:

Always replace exhaust tube gaskets with new ones when reassembling.

If heat insulator is badly deformed, repair or replace it. If deposits such as mud pile up on the heat
insulator, remove them.

When installing heat insulator avoid large gaps or interference between heat insulator and each
exhaust pipe.

Remove deposits from the sealing surface of each connection. Connect them securely to avoid
gas leakage.

Temporarily tighten mounting nuts on the exhaust manifold side and mounting bolts on the vehi-
cle side. Check each part for unusual interference, and then tighten them to the specified torque.

When installing each mounting rubber, avoid twisting or unusual extension in up/down and right/
left directions.
INSPECTION AFTER INSTALLATION

Make sure clearance between tail tube and bumper is even.

With engine running, check exhaust tube joints for gas leakage and unusual noises.

Check to ensure that mounting brackets and mounting rubbers are installed properly and free from undue
stress. Improper installation could result in excessive noise and vibration.
PBIC1049E

FAX-14
[AWD]
FRONT DRIVE SHAFT
Revision: 2004 November 2004 FX35/FX45
INSTALLATION

Refer to FAX-13, "Removal and Installation (Right Side)" for tightening torque. Install in the reverse order
of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

Check the following item after service.
–Installation condition of wheel sensor harness.

In order to prevent damage to front final drive assembly side oil
seal, first fit a protector onto oil seal before inserting drive shaft.
Slide drive shaft into slide joint and tap with a hammer to install
securely.
CAUTION:
Be sure to check that circular clip is securely fastened.
Disassembly and Assembly (Left Side)ADS000OP
DISASSEMBLY
Front Final Drive Assembly Side
1. Press drive shaft in a vice.
CAUTION:
When retaining shaft in a vice, always use copper or aluminum plates between vise and shaft.
2. Remove boot bands.
3. If plug needs to be removed, move boot to wheel side, and drive it out with a plastic hammer.
SDIA0593E
1. Plug 2. Housing 3. Snap ring
4. Spider assembly 5. Boot band 6. Boot
7. Shaft 8. Circular clip 9. Joint sub-assembly
SDIA1443E

FAX-16
[AWD]
FRONT DRIVE SHAFT
Revision: 2004 November 2004 FX35/FX45
NOTE:
Housing and spider assembly are components which are used as a set.
ASSEMBLY
Front Final Drive Assembly Side
1. If plug has been removed, use a drift (SST) to press in a new
one.
NOTE:
Discard old plug; replace with new ones.
2. Wind serrated part of shaft with tape. Install boot band and boot
to shaft. Be careful not to damage boot.
NOTE:
Discard old boot band and boot; replace with each new one.
3. Remove protective tape wound around serrated part of shaft.
4. Line up alignment marks which were made when spider assem-
bly was removed. Install spider assembly, with serration chamfer
facing shaft.
5. Secure spider assembly with snap ring.
NOTE:
Discard old snap ring; replace with new one.
6. Apply Nissan genuine grease or equivalent to spider assembly
and sliding surface.
SDIA1153E
SFA800
SDIA1792E
SFA023A

FRONT DRIVE SHAFT
FAX-17
[AWD]
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FA X
Revision: 2004 November 2004 FX35/FX45
7. Install housing to spider assembly. Apply Nissan genuine grease
or equivalent to housing.
8. Install boot securely into grooves (indicated by * marks) shown
in the figure.
CAUTION:
If there is grease on boot mounting surfaces (indicated by*
marks) of shaft and housing, boot may come off. Remove
all grease from surfaces.
9. Make sure boot installation length “L” is the length indicated
below. Insert a flat-bladed screwdriver or similar tool into smaller
side of boot. Bleed air from boot to prevent boot deformation.
CAUTION:

Boot may break if boot installation length is less than standard value.

Take care not to touch the tip of screwdriver to inside surface of boot.
10. Install new larger and smaller boot bands securely with a suit-
able tool.
NOTE:

Discard old boot bands; replace with new ones.

Secure boot band so that dimension “M” shown bellow right
satisfies the following:
11. After installing housing and shaft, rotate boot to check whether
or not the actual position is correct. If boot position is not correct,
secure boot with new boot bands again.Grease amount : 95 − 105 g (3.35 − 3.70 oz)
SDIA1445E
Boot installation Length “L ”:
95 − 97 mm (3.74 − 3.82 in)SDIA1126E
RAC1133D
Large diameter side : 3.0 mm (0.118 in)
Small diameter side : 2.0 mm (0.079 in)
DSF0047D

FAX-18
[AWD]
FRONT DRIVE SHAFT
Revision: 2004 November 2004 FX35/FX45
Wheel Side
1. Insert the amount grease (Nissan genuine grease or equivalent)
into joint sub-assembly serration hole until grease begins to
ooze from ball groove and serration hole. After inserting grease,
use a shop cloth to wipe off old grease that has oozed out.
2. Wind serrated part of shaft with tape. Install boot band and boot
to shaft. Be careful not to damage boot.
NOTE:
Discard old boot band and boot; replace with new ones.
3. Remove protective tape wound around serrated part of shaft.
4. Attach circular clip to shaft. At this time, circular clip must fit
securely into shaft groove. Attach nut to joint sub-assembly.
Use a wooden hammer to press-fit.
NOTE:
Discard old circular clip; replace with new one.
5. Insert the specified amount of grease (Nissan genuine grease or
equivalent) listed below into boot from large end of boot.
6. Install boot securely into grooves (indicated by * marks) shown
in the figure.
CAUTION:
If there is grease on boot mounting surfaces (indicated by*
marks) of shaft and housing of joint sub assembly, boot
may come off. Remove all grease from surfaces.
7. Make sure boot installation length “L” is the length indicated
below. Insert a flat-bladed screwdriver or similar tool into smaller
side of boot. Bleed air from boot to prevent boot deformation.
CAUTION:

Boot may brake if boot installation length is less than standard value.

Be careful that screwdriver tip does not contact inside surface of boot.
SDIA1127E
SFA800
Grease amount : 95 − 11 5 g ( 3 . 3 5 − 4.06 oz)
RAC0049D
Boot installation length “L” : 136 mm (5.35 in)SDIA1736E

FRONT DRIVE SHAFT
FAX-19
[AWD]
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FA X
Revision: 2004 November 2004 FX35/FX45
8. Install new larger and smaller boot bands securely with a suit-
able tool.
NOTE:

Discard old boot bands; replace with new ones.

Secure boot band so that dimension “M” shown bellow right
satisfies the following:
9. After installing joint sub-assembly and shaft, rotate boot to check
whether or not the actual position is correct. If boot position is
not correct, secure boot with new boot bands again.
Disassembly and Assembly (Right Side)ADS000OQ
DISASSEMBLY
Front Final Drive Assembly Side
1. Press drive shaft in a vice.
CAUTION:
When retaining drive shaft in a vice, always use copper or aluminum plates between a vise and
shaft.
2. Remove boot bands.
RAC1133D
Large diameter side : 3.0 mm (0.118 in)
Small diameter side : 2.0 mm (0.079 in)
DSF0047D
1. Joint sub-assembly 2. Circular clip 3. Boot band
4. Boot 5. Shaft 6. Spider assembly
7. Snap ring 8. Housing 9. Dust shield
10. Circular clip
SDIA1444E