Infiniti FX35 / FX45. Manual - part 680

ENGINE ASSEMBLY

EM-237

< SERVICE INFORMATION >

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ENGINE ASSEMBLY

Component

INFOID:0000000001325801

• Refer to 

GI-8, "Component"

 for symbols in the figure.

Removal and Installation

INFOID:0000000001325802

WARNING:

• Situate vehicle on a flat and solid surface.
• Place chocks at front and back of rear wheels.
• For engines not equipped with engine slingers, attach proper slingers and bolts described in PARTS

CATALOG.

CAUTION:

• Always be careful to work safely, avoid forceful or uninstructed operations.
• Do not start working until exhaust system and engine coolant are cool enough.
• If items or work required are not covered by the engine section, refer to the applicable sections.
• Always use the support point specified for lifting.
• Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for unavoid-

able reasons, support at the rear axle jacking point with transmission jack or similar tool before
starting work, in preparation for the backward shift of center of gravity.

• For supporting points for lifting and jacking point at rear axle, refer to 

GI-37, "Garage Jack and

Safety Stand"

.

REMOVAL

Outline

At first, remove engine, transmission assembly and front final drive with front suspension member from vehicle
downward. Then separate engine from transmission.

Preparation

1.

Engine mounting bracket (RH)

2.

Engine mounting insulator (RH)

3.

Engine mounting bracket (LH)

4.

Engine mounting insulator (LH)

5.

Plate

6.

Collar

7.

Grommet

8.

Engine rear member

9.

Engine mounting insulator (rear)

JPBIA0902GB

EM-238

< SERVICE INFORMATION >

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ENGINE ASSEMBLY

1.

Release fuel pressure. Refer to 

EC-665, "Fuel Pressure Check"

.

2.

Drain engine coolant from radiator. Refer to 

CO-37, "Changing Engine Coolant"

.

CAUTION:

• Perform this step when engine is cold.
• Do not spill engine coolant on drive belts.

3.

Disconnect both battery terminal. Refer to 

SC-4, "How to Handle Battery"

.

4.

Remove crankshaft position sensor (POS) from transmission.

CAUTION:

• Handle carefully to avoid dropping and shocks.
• Do not disassemble.
• Do not allow metal powder to adhere to magnetic part at sensor tip.
• Do not place sensors in a location where they are exposed to magnetism.

5.

Remove the following parts:
• Hood assembly: Refer to 

BL-13, "Fitting Adjustment"

.

• Engine cover: Refer to 

EM-169

.

• Front and rear engine undercover
• Air duct (inlet), air duct and air cleaner case assembly: Refer to 

EM-173, "Component"

.

• Drive belts: Refer to 

EM-170, "Component"

. 

• Radiator and radiator hoses (upper and lower): Refer to 

CO-40, "Component"

.

• Front road wheels and tires

Engine Room LH

1.

Disconnect engine room harness from the engine side and set it aside for easier work.

2.

Disconnect heater hoses, and install plugs to avoid leakage of engine coolant.

3.

Disconnect ground cable from exhaust manifold cover to vehicle.

4.

Disconnect vacuum hose between vehicle and engine and set it aside.

5.

Discharge refrigerant from A/C circuit. Refer to 

ATC-120, "HFC-134a (R-134a) Service Procedure"

.

6.

Remove A/C piping from A/C compressor, and temporarily fasten it on vehicle with a rope. Refer to 

ATC-

121, "Component"

.

Engine Room RH

1.

Disconnect fuel feed hose and EVAP hose. Refer to 

EM-190, "Component"

.

CAUTION:

Fit plugs onto disconnected hose to prevent fuel leak.

2.

Disconnect engine room harness from the engine side and set it aside for easier work.

3.

Disconnect ground cable from exhaust manifold cover to vehicle.

4.

Disconnect vacuum hose between vehicle and engine and set it aside. 

5.

Disconnect reservoir tank of power steering oil pump from engine, and move it aside for easier work.

CAUTION:

When temporarily securing, keep reservoir tank upright to avoid a fluid leak.

Vehicle Underbody

1.

Remove front cross bar. Refer to 

FSU-5, "On-Vehicle Inspection and Service"

.

2.

Disconnect power steering oil pump from engine. Move it from its location and secure with a rope for eas-
ier work. Refer to 

PS-29, "Removal and Installation (VK45DE Models)"

. 

3.

Remove A/T fluid cooler tube. Refer to 

AT-241, "Removal and Installation (2WD Models)"

.

4.

Remove exhaust front tube and center muffler with power tool. Refer to 

EX-3, "Checking Exhaust Sys-

tem"

.

5.

Remove RH and LH transverse link mounting bolts and nuts. Refer to 

FSU-13, "Removal and Installation"

.

6.

Disconnect stabilizer connecting rod lower. Refer to 

FSU-5, "On-Vehicle Inspection and Service"

.

7.

Remove A/T control rod at control device assembly side. Then temporarily secure it on transmission, so
that it does not sag. Refer to 

AT-205, "Control Device Removal and Installation"

.

8.

Remove rear plate cover from oil pan. Then remove bolts fixing drive plate to torque converter. Refer to

EM-183, "Component"

 and 

AT-241, "Removal and Installation (2WD Models)"

.

9.

Remove transmission joint bolts which pierce at oil pan lower rear side. Refer to 

AT-241, "Removal and

Installation (2WD Models)"

.

ENGINE ASSEMBLY

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10. Disconnect steering lower joint at power steering gear assembly side, and release steering lower shaft.

Refer to 

PS-12, "Removal and Installation"

.

11. Remove rear propeller shaft. Refer to 

PR-7, "On-Vehicle Inspection"

.

• After disconnection, plug the opening on transmission side.

12. Remove front drive shaft (both side). Refer to 

FAX-13, "On-Vehicle Inspection"

.

13. Remove front propeller shaft. Refer to 

PR-4, "On-Vehicle Inspection"

.

14. Remove three way catalyst (both bank). Refer to 

EM-179, "Component"

.

Removal Work

1.

Install engine slingers into front of cylinder head (left bank) and
front of cylinder head (right bank).

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 engine rear member mounting bolts.

5.

Remove front suspension member mounting nuts with power tool. Refer to 

FSU-5, "On-Vehicle Inspection

and Service"

.

6.

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 nec-

essary, 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 make sure that any harnesses are left connected.

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

EM-240

< SERVICE INFORMATION >

[VK45DE]

ENGINE ASSEMBLY

• Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.

4.

Remove alternator. Refer to 

SC-19, "System Description"

.

5.

Remove starter motor. Refer to 

SC-8, "System Description"

.

6.

Separate engine from transmission assembly. Refer to 

AT-243, "Removal and Installation (AWD Models)"

.

7.

Remove front final drive from engine. Refer to 

FFD-14, "Removal and Installation (VQ35DE Models)"

.

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 the following, and install in the reverse order of removal.
• Do not allow engine mounting insulator to be damage and careful no engine oil gets on it.
• For a location with a positioning pin, insert it securely into hole of mating part.
• For a part with a specified installation orientation, refer to component figure in "Removal and Installation".
• When installing engine mounting brackets (RH and LH) on 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

Inspection for Leaks

The followings are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required

quantity, fill to the specified level. Refer to 

MA-9, "Fluids and Lubricants"

.

• 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 leak-

age 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 fuel, exhaust gases, or any oil/fluids includ-

ing engine oil and engine coolant.

• Bleed air from lines and hoses of applicable lines, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the

specified level, if necessary.

Summary of the inspection items:

*: Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc.

PBIC2365E

Items

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Other oils and fluid*

Level

Leakage

Level

Fuel

Leakage

Leakage

Leakage

Exhaust gases

—

Leakage

—