Infiniti QX56 (Z62). Manual - part 665

 

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Infiniti QX56 (Z62). Manual - part 665

 

 

EM-100

< UNIT REMOVAL AND INSTALLATION >

ENGINE ASSEMBLY

3.

Install engine slinger on both front right and front left sides of the
engine.

4.

Hoist the slinger to obtain room for engine assembly.

CAUTION:

Use an engine lifter to prevent the engine slinger from fall-
ing and damaging the rocker cover.

REMOVAL

Outline

At first, remove the transmission and transfer assembly, steering gear and front final drive facing downward.
Then remove the engine.

Preparation

1.

Remove engine cover. Refer to 

EM-25, "Exploded View"

.

2.

Release fuel pressure. Refer to 

EC-153, "Work Procedure"

.

3.

Remove battery and tray. Refer to 

PG-164, "Exploded View"

.

4.

Remove the following components and related parts:
• Hood assembly. Refer to 

DLK-215, "Exploded View"

.

• Front under cover. Refer to 

EXT-25, "Exploded View"

.

• Front road wheel and tires. Refer to 

WT-64, "Exploded View"

.

5.

Drain engine oil. Refer to 

LU-8, "Draining"

.

6.

Drain engine coolant. Refer to 

CO-8, "Draining"

.

CAUTION:

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

7.

Drain power steering fluid. Refer to 

ST-54, "Exploded View"

.

Engine Room Front

1.

Remove drive belt. Refer to 

EM-20, "Exploded View"

.

2.

Remove fan shroud. Refer to 

CO-13, "Exploded View"

.

3.

Remove cooling fan and fan coupling. Refer to 

CO-16, "Exploded View"

.

4.

Remove radiator hoses (upper and lower).

5.

Remove radiator.

Vehicle Underbody

1.

Remove exhaust front tube. Refer to 

EX-5, "Exploded View"

.

2.

Remove protector A and B. Refer to 

SCS-32, "FRONT TUBE ASSEMBLY : Exploded View"

.

3.

Remove front suspension rear cross member. Refer to 

TM-205, "2WD : Exploded View"

 (2WD models) or

TM-208, "4WD : Exploded View"

 (4WD models).

4.

Remove oil cooler. Refer to 

LU-11, "Exploded View"

.

A

: Engine front slinger (bank 2)

B

: Engine front slinger (bank 1)

Slinger bolts:

: 45.0 N·m (4.6 kg-m, 33 ft-lb)

JPBIA3969ZZ

JPBIA2507ZZ

ENGINE ASSEMBLY

EM-101

< UNIT REMOVAL AND INSTALLATION >

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5.

Remove A/T assembly. Refer to 

TM-205, "2WD : Exploded View"

 (2WD models) or 

TM-208, "4WD :

Exploded View"

 (4WD models).

6.

Remove steering gear assembly. Refer to 

ST-41, "Exploded View"

.

7.

Remove front final drive assembly. Refer to 

DLN-162, "Exploded View"

.

8.

Remove exhaust manifold. Refer to 

EM-40, "Exploded View"

9.

Remove alternator. Refer to 

CHG-25, "Exploded View"

.

Engine Room LH

1.

Remove air cleaner and air duct. Refer to 

EM-27, "Exploded View"

.

2.

Remove A/C compressor. Refer to 

HA-30, "Exploded View"

.

3.

Disconnect fuel feed hose and EVAP hose. Refer to 

EM-43, "Exploded View"

.

CAUTION:

Fit plugs onto disconnected hoses to prevent fuel leakage.

Engine Room RH

1.

Remove power steering oil pump and reservoir tank. Refer to 

ST-48, "Exploded View"

.

2.

Disconnect heater hose at heater core side, and fit a plug onto hose end to prevent engine coolant leak-
age.

3.

Disconnect ground cable.

4.

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

Removal Work

1.

Install alternator bracket. Refer to 

CHG-25, "Exploded View"

.

• Temporarily tighten mounting bolts.

2.

Remove intake manifold. Refer to 

EM-30, "Exploded View"

.

3.

Remove starter motor. Refer to 

STR-17, "Exploded View"

.

4.

Install engine slingers.

5.

Lift using a hoist and secure the engine in position.

6.

Remove engine mounting bracket (LH, RH) and engine mounting insulator (LH, RH). Refer to 

EM-98,

"Exploded View"

.

7.

Remove the engine from the vehicle, avoid interference with the
vehicle body.

CAUTION:

• Before and during lifting, always check that any har-

nesses are left connected.

• Never damage engine mounting insulator and avoid oil/

grease smearing or spills onto engine mounting insulator.

A

Engine front slinger (bank 2)

B

Engine rear slinger

C

Engine front slinger (bank 1)

Slinger bolts:

: 45.0 N·m (4.6 kg-m, 33 ft-lb)

JPBIA3970ZZ

JPBIA3497ZZ

EM-102

< UNIT REMOVAL AND INSTALLATION >

ENGINE ASSEMBLY

INSTALLATION

Install in the reverse order of removal.

CAUTION:

• When replacing an engine or transmission you must make sure the dowels are installed correctly

during re-assembly.Improper alignment caused by missing dowels may cause vibration, oil leaks or
breakage of drivetrain components.

Inspection

INFOID:0000000006289578

INSPECTION AFTER INSTALLATION

Inspection for Leakage

The following are procedures for checking fluid leakage, lubricant leakage.

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

required quantity, fill them to the specified level. Refer to 

MA-10, "Fluids and Lubricants"

.

• Follow the procedure below to check for fuel leakage.
- Turn ignition switch to the “ON” position (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.

NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide may generate a
pounding noise during and just after the engine start. However, this does not indicate a malfunction. The
noise will stop after hydraulic pressure rises.

• Warm up engine thoroughly to check that there is no leakage of fuel, 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 them to

the specified level, if necessary.

Summary of the inspection items:

*: Power steering fluid, brake fluid, etc.

Items

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Transmission / 
transaxle fluid

AT & CVT Models

Leakage

Level / Leakage

Leakage

MT Models

Level / Leakage

Leakage

Level / Leakage

Other oils and fluids*

Level

Leakage

Level

Fuel

Leakage

Leakage

Leakage

Exhaust gases

Leakage

ENGINE STAND SETTING

EM-103

< UNIT DISASSEMBLY AND ASSEMBLY >

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UNIT DISASSEMBLY AND ASSEMBLY

ENGINE STAND SETTING

Setting

INFOID:0000000006289579

NOTE:
Explained here is how to disassemble with engine stand supporting transmission surface. When using a differ-
ent type of engine stand, note the difference in the steps, etc.
1.

Remove the engine assembly from the vehicle. Refer to 

EM-98, "Exploded View"

.

2.

Remove crankshaft pulley. Refer to 

EM-96, "FRONT OIL SEAL : Removal and Installation"

.

NOTE:
The drive plate is fixed with a ring gear stopper [SST: KV10119200 (J-49277)]. Loosen the crankshaft pul-
ley mounting bolts before installing the engine stand.

3.

Remove the parts that may restrict installation of engine to a widely used engine stand.
• Fix crankshaft with a ring gear stopper [SST: KV10119200 (J-49277)]. Loosen drive plate mounting bolt

with power tool. 

• Check for deformation or damage of drive plate. Refer to 

EM-115, "Inspection"

.

NOTE:
The procedure is described assuming that you use a widely used engine stand holding the surface, to
which transmission is installed.

4.

Remove pilot converter using the pilot bushing puller (commercial service tool), if necessary.

5.

Lift the engine with hoist to install it onto the widely used engine stand.

CAUTION:

Use an engine stand that has a load capacity [240 kg (529 lb) or more] large enough for supporting
the engine weight. 
• If the load capacity of the stand is not adequate, remove the following parts beforehand to reduce the

potential risk of overturning the stand.

- Remove intake manifold. Refer to 

EM-30, "Exploded View"

.

- Remove fuel injector and fuel tube assembly. Refer to 

EM-48, "Exploded View"

.

- Remove ignition coil. Refer to 

EM-29, "Exploded View"

.

- Remove rocker cover. Refer to 

EM-33, "Exploded View"

.

- Remove exhaust manifold. Refer to 

EM-40, "Exploded View"

.

- Other removable brackets.

NOTE:
The figure shows an example of widely used engine stand (A)
that can hold mating surface of transmission with drive plate
removed.

CAUTION:

Before removing the hanging chains, check the engine
stand is stable and there is no risk of overturning.

6.

Drain engine oil. Refer to 

LU-8, "Draining"

.

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