Infiniti FX35, FX50 (S51). Manual - part 947

EM-88

< UNIT REMOVAL AND INSTALLATION >

[VQ35HR]

ENGINE ASSEMBLY

Outline

At first, remove the engine, the transmission assembly, the transfer assembly and the front final drive assem-
bly with front suspension member downward. Then separate the engine, the transmission assembly, the trans-
fer and the front final drive assembly.

Preparation

1.

Release fuel pressure. Refer to 

EC-566, "Inspection"

.

2.

Disconnect both battery terminals. Refer to 

PG-161, "Exploded View"

.

3.

Drain engine coolant from radiator. Refer to 

CO-8, "Draining"

.

CAUTION:

• Perform this step when engine is cold.
• Never spill engine coolant on drive belt.

4.

Remove the following parts:
• Radiator reservoir tank: Refer to 

CO-14, "Exploded View"

.

• Engine cover: Refer to 

EM-27, "Exploded View"

.

• Front road wheel and tires (power tool)
• Engine undercover (power tool)
• Front cross bar: Refer to 

FSU-15, "Exploded View"

.

• Cowl top cover: Refer to 

EXT-22, "Exploded View"

.

• Air duct and air cleaner case assembly: Refer to 

EM-29, "Exploded View"

.

5.

Discharge refrigerant from A/C circuit. Refer to 

HA-25, "Collection and Charge"

.

6.

Remove radiator hoses (upper and lower). Refer to 

CO-14, "Exploded View"

.

Engine Room LH

1.

Disconnect heater hose from vehicle-side, and fit a plug onto hose end to prevent engine coolant leakage.

2.

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

HA-

40, "Exploded View"

.

3.

Disconnect brake booster vacuum hose.

4.

Disconnect ground cables.

Engine Room RH

1.

Disconnect battery positive cable vehicle side and temporarily fasten it on engine. 

2.

Disconnect all clips and connectors of the engine room harness from engine back side.

3.

Disconnect fuel feed hose (with damper) and EVAP hose. Refer to 

EM-40, "Exploded View"

.

CAUTION:

Fit plugs onto disconnected hoses to prevent fuel leakage.

4.

Remove reservoir tank of power steering oil pump and piping from vehicle, and temporarily secure them
on engine. Refer to 

ST-48, "VQ35HR : Exploded View"

.

CAUTION:

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

Vehicle Inside

Follow procedure below to disconnect engine room harness connectors at passenger room side, and tempo-
rarily secure them on engine.

1.

Remove passenger-side kicking plate and dash side finisher. Refer to 

INT-17, "Exploded View"

.

2.

Disconnect engine room harness connectors at unit sides and other.

3.

Disengage intermediate fixing point. Pull out engine room harnesses to engine room side, and temporarily
secure them on engine.

CAUTION:

• When pulling out harnesses, take care not to damage harnesses and connectors.
• After temporarily securing, cover connectors with vinyl or similar material to protect against for-

eign material adhesion.

Vehicle Underbody

1.

Remove A/T fluid cooler hoses and power steering oil pump oil cooler hoses.
• Install plug to avoid leakage of A/T fluid and power steering fluid.

2.

Disconnect heated oxygen sensor 2 harness. Refer to 

EM-36, "Exploded View"

.

3.

Remove three way catalyst and exhaust front tube. Refer to 

EX-5, "Exploded View"

.

ENGINE ASSEMBLY

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< UNIT REMOVAL AND INSTALLATION >

[VQ35HR]

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4.

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

ST-18, "WITHOUT ELECTRIC MOTOR : Exploded View"

 or 

ST-21, "WITH ELECTRIC MOTOR :

Exploded View"

.

5.

Remove rear propeller shaft. Refer to 

DLN-118, "Exploded View"

.

6.

Remove front drive shaft (both side). Refer to 

FAX-26, "Exploded View"

.

7.

Disengage A/T control rod at A/T shift selector side. Then, temporarily secure it on the transmission
assembly, so that it does not sag. Refer to 

TM-171, "Exploded View"

.

8.

Preparation for the separation work of transaxle is as per the following:
• Remove rear plate cover from oil pan (upper). Then remove bolts fixing drive plate to torque converter.

Refer to 

EM-46, "Exploded View"

.

• Remove transmission joint bolts that pierce at oil pan (upper) lower rear side. Refer to 

EM-46,

"Exploded View"

.

9.

Remove front stabilizer connecting rod from transverse link. Refer to 

FSU-36, "Exploded View"

.

10. Remove lower ends of left and right steering knuckle from transverse link. Refer to 

FSU-13, "Exploded

View"

.

11. Separate steering outer sockets from steering knuckle. Refer to 

ST-26, "Exploded View"

.

12. Remove transverse links mounting bolts at suspension member side. Refer to 

FSU-13, "Exploded View"

.

Removal Work

1.

Use a manual lift table caddy (commercial service tool) or an
equivalently rigid tool such as a transmission jack. Securely sup-
port bottom of suspension member and transmission.

CAUTION:

Put a piece of wood or something similar as the supporting
surface, secure a completely stable condition.

2.

Remove rear engine mounting member bolts.

3.

Remove front suspension member mounting bolts and nuts. Refer to 

FSU-37, "Exploded View"

.

4.

Carefully lower jack, or raise lift to remove the engine, transmission, transfer and front final drive assembly
and front suspension member. When performing work, observe the following caution:

CAUTION:

• Confirm there is no interference with the vehicle.
• Check that all connection points have been disconnected.
• Keep in mind the center of the vehicle gravity changes. If necessary, use jack(s) to support the

vehicle at rear jacking point(s) to prevent it from falling it off the lift.

Separation Work

1.

Install engine slingers into front of cylinder head (bank 1) and
rear of cylinder head (bank 2).

PBIC0804E

1

: Engine front slinger

2

: Engine rear upper slinger

3

: Spacer

4

: Engine rear lower slinger

A

:  Bank  1

B

:  Bank  2

: Engine front

Slinger bolts:

: 28.0 N·m (2.9 kg-m, 21 ft-lb)

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EM-90

< UNIT REMOVAL AND INSTALLATION >

[VQ35HR]

ENGINE ASSEMBLY

• To protect rocker cover against damage caused by tilting of

engine slinger, insert spacer between cylinder head and
engine rear lower slinger (3), in direction shown in the figure.

NOTE:
Spacer (2) is a component part of engine rear upper slinger
assembly.

2.

Remove power steering oil pump from engine side. Refer to 

ST-36, "VQ35HR : Exploded View"

.

3.

Remove engine mounting insulators (RH and LH) under side nuts with power tool.

4.

Lift with hoist and separate the engine, the transmission assembly, the transfer assembly and the front
final drive assembly from front suspension member.

CAUTION:

• Before and during this lifting, always check if any harnesses are left connected.
• Never damage to and oil/grease smearing or spills onto engine mounting insulator.

5.

Remove alternator. Refer to 

CHG-29, "VQ35HR : Exploded View"

.

6.

Remove starter motor. Refer to 

STR-18, "VQ35HR : Exploded View"

.

7.

Remove front propeller shaft from the front final drive assembly side. Refer to 

DLN-109, "VQ35HR :

Exploded View"

.

8.

Separate the engine from the transmission assembly. Refer to 

TM-184, "AWD : Exploded View"

.

9.

Remove the front final drive assembly from oil pan (upper). Refer to 

DLN-150, "VQ35HR : Exploded

View"

.

10. Remove each engine mounting insulator and each engine mounting bracket from the engine with power

tool.

INSTALLATION

Note the following item, 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 

EM-87, "AWD : Exploded

View"

.

• When installing engine mounting bracket (RH and LH) on cylinder

block, tighten two upper bolts (B) first. Then tighten two lower bolts
(C).

• Install engine mounting bracket (RH) (lower) (2) as per the follow-

ing:

- Temporarily tighten mounting bolts [shown as (D), (E) and (F) in

the figure].

- Tighten mounting bolts to the specified torque with following

mounting surfaces touched.

• Engine mounting bracket (RH) (1) to engine mounting bracket

(RH) (lower) [shown as and in figure].

• Front final drive to engine mounting bracket (RH) (lower) [shown

as in figure].

• Check all engine mounting insulators are seated properly, then

tighten mounting nuts.

1

: Engine rear upper slinger

: Engine front

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3

: Engine mounting bracket (LH)

A

: Right side

G :  Left  side

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ENGINE ASSEMBLY

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• Tighten rear engine mounting member bolts in numerical order as

shown in the figure.

AWD : Inspection

INFOID:0000000005245160

INSPECTION AFTER INSTALLATION

Inspection for Leakage

The following are procedures for checking fluids leakage, lubricates leakage and exhaust gases leakage.

• 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-12, "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 check there is no leakage of fuel, exhaust gases, or any oil/fluids including

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.

: Vehicle front

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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

—