Nissan Pathfinder. Manual - part 567

ENGINE ASSEMBLY

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4WD : Removal and Installation

INFOID:0000000009177943

WARNING:

• Situate the 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 work safely. 

• Do not start work until the engine and exhaust system are cooled completely.

• Refer to the applicable sections for warnings, cautions, notes, and instructions if necessary proce-

dures are not included in the engine section.

• For supporting, lifting and jacking points, refer to 

GI-38, "2-Pole Lift"

 and 

GI-37, "Garage Jack and

Safety Stand"

.

• Always use the support point specified for lifting.

• Support the vehicle at the rear axle jacking point with transmission jack or similar tool before remov-

ing the engine in preparation for the backward shift of the center of gravity.

NOTE:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-

ing.

REMOVAL

Outline

Remove the engine, transaxle and transfer assembly with the front suspension member as a unit. Remove the

transfer assembly and separate the engine from the transaxle.

Preparation

1. Release fuel pressure. Refer to 

EC-151, "Work Procedure"

.

2. Drain engine coolant. Refer to 

CO-11, "Changing Engine Coolant"

.

CAUTION:

• Perform this step when the engine is cold.

• Do not allow the engine coolant to contact the drive belts.

3. Remove the engine under cover. Refer to 

EXT-17, "Removal and Installation"

.

4. Remove the front road wheels and tires using a power tool. Refer to 

WT-58, "Adjustment"

.

5. Remove the fender protector side covers (RH and LH): Refer to 

EXT-28, "FENDER PROTECTOR :

Removal and Installation"

.

6. Remove the hood lock switch assembly. Refer to 

DLK-299, "HOOD LOCK RELEASE CABLE : Removal

and Installation"

.

Engine Room

1. Remove the air duct (inlet), air cleaner cases (upper and lower) with mass air flow sensor and air duct

assembly. Refer to 

EM-24, "Removal and Installation"

.

2. Remove the engine room cover. Refer to 

EM-23, "Removal and Installation"

.

3. Drain the power steering fluid. Refer to 

ST-42, "Draining and Refilling"

.

4. Disconnect engine room harness at the CVT and ECM connectors.

CAUTION:

Protect the harness connector with plastic bags or suitable covering to help prevent damage and

intrusion of foreign materials into the connectors.

5. Remove the battery and battery tray. Refer to 

PG-90, "Removal and Installation"

.

6. Remove battery bracket with ECM and CVT module.
7. Disconnect the brake fluid reservoir from the lower cowl panel and position aside.
8. Disconnect the fuse relay box from the lower cowl panel and position aside. 
9. Remove the cowl top extension and cowl top. Refer to 

EXT-25, "Removal and Installation"

.

10. Remove the front wiper drive assembly. Refer to 

WW-65, "Removal and Installation"

. 

11. Remove the lower cowl panel. Refer to 

EXT-25, "Removal and Installation"

.

12. Disconnect heater hoses. Refer to 

HA-44, "HEATER CORE : Removal and Installation"

.

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ENGINE ASSEMBLY

13. Remove engine cooling fan shroud and motor assembly. Refer to 

CO-17, "Removal and Installation"

.

14. Remove upper and lower radiator hoses. Refer to 

CO-15, "Removal and Installation"

.

15. Remove the radiator. Refer to 

CO-15, "Removal and Installation"

.

16. Remove EVAP hose. Refer to 

EC-14, "ENGINE CONTROL SYSTEM : Component Parts Location"

.

17. Disconnect fuel feed hose quick connector at fuel tube side. Refer to 

EM-47, "Exploded View"

.

18. Disconnect transaxle shift control cable at transaxle side. Refer to 

TM-191, "Exploded View"

.

19. Disconnect brake booster vacuum hose at brake booster. Refer to 

BR-31, "Exploded View"

.

20. Remove harness ground cable.
21. Disconnect low pressure hose from steering pump. Refer to 

ST-55, "Removal and Installation"

.

22. Disconnect high pressure piping from steering pump. Refer to 

ST-55, "Removal and Installation"

.

23. Disconnect the wiring harness from the distribution/fuse block.
24. Disconnect the CVT fluid cooler hoses from the CVT. 
25. Remove the upper torque rod. 
26. Remove engine mounting insulator (RH) three upper nuts.

Vehicle Underbody

1. Remove exhaust front tube. Refer to 

EX-5, "Exploded View"

.

2. Remove heat insulator.
3. Remove rear propeller shaft. Refer to 

DLN-103, "Removal and Installation"

.

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

ST-48, "Exploded View"

.

5. Disconnect front stabilizer connecting rod. Refer to 

FSU-12, "Exploded View"

.

6. Remove front brake caliper with piping connected and position them aside. Refer to 

BR-36, "BRAKE CAL-

IPER ASSEMBLY : Removal and Installation"

.

7. Remove rear plate cover from oil pan (upper). Then remove nuts attaching the drive plate to the torque

converter. Refer to 

EM-112, "Disassembly and Assembly"

.

8. Remove crankshaft position sensor (POS). Refer to 

DLN-94, "Exploded View"

.

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.

Removal

1. Use suitable tool to securely support bottom of front suspension

member.

CAUTION:

Put a piece of wood or something similar as the supporting

surface to secure a completely stable condition.

2. Remove front suspension member mounting nuts and bolts. Refer to 

FSU-7, "Exploded View"

.

3. Carefully lower table to remove the engine, the transaxle, transfer assembly and front suspension mem-

ber. When performing work, observe the following caution:

CAUTION:

• Confirm there is no interference with the vehicle.

• Repeatedly check to ensure all harnesses are disconnected before and during engine removal.

• Check all connection points have been disconnected.

• Keep in mind the center of vehicle gravity changes. If necessary, use jack(s) to support the vehi-

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

PBIC1190E

ENGINE ASSEMBLY

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Separation

1. Install engine slingers into front of cylinder head (bank 1) (3) and

rear of cylinder head (bank 2) (2).

2. Disconnect vacuum hose from front engine mounting insulator.
3. Remove CVT charging pipe. Refer to 

TM-213, "Exploded View"

.

4. Remove starter. Refer to 

STR-20, "Removal and Installation"

.

5. Remove exhaust manifold and three way catalyst (RH). Refer to 

EM-31, "Removal and Installation (bank

2)"

.

6. Remove transfer. Refer to 

DLN-75, "Removal and Installation"

.

7. Remove front drive shaft (RH). Refer to 

FAX-18, "Removal and Installation (RH)"

.

8. Remove rear torque rod through bolt.
9. Remove engine mounting insulator (rear).
10. Remove transaxle to engine bolts. 
11. Separate engine and transaxle assembly. 
12. Lift the engine from the front suspension member.

CAUTION:

• Repeatedly check to ensure all harnesses are disconnected before and during engine lifting.

• Avoid spilling engine oil or grease onto the engine mounting insulators to prevent damage to

engine mounting insulators.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Do not damage the engine mounting insulator. Do not spill engine oil on the engine mounting insula-

tor.

• Check all mounting insulators are seated properly, then tighten nuts and bolts.

INSPECTION AFTER INSTALLATION

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

required quantity, fill to the specified level. Refer to 

MA-15, "FOR USA AND CANADA : Fluids and Lubri-

cants"

 (United States and Canada) or 

MA-16, "FOR MEXICO : Fluids and Lubricants"

 (Mexico).

• Use procedure below to check for fuel leaks.

• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leaks

at connection points.

• Start engine. With engine speed increased, check again for fuel leaks at connection points.

• Run engine to check for unusual noise and vibration.

NOTE:

(1)

: Engine rear slinger

(4)

: Engine front slinger (upper)

(5)

: Engine front slinger (lower)

: Engine front

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ENGINE ASSEMBLY

If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide

may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop

after hydraulic pressure rises.

• Warm up engine thoroughly to make sure there are no leaks of fuel, exhaust gas, or any oils/fluids including

engine oil and engine coolant.

• Bleed air from passages in lines and hoses, such as in cooling system.

• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec-

ified level, if necessary.

• Summary of the inspection items:

*Power steering fluid, brake fluid, etc.

Item

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leaks

Level

Engine oil

Level

Leaks

Level

Transaxle fluid

CVT Models

Leaks

Level/Leaks

Leaks

Level/Leaks

Leaks

Level/Leaks

Other oils and fluids*

Level

Leaks

Level

Fuel

Leaks

Leaks

Leaks

Exhaust gas

—

Leaks

—