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
• 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
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
.
5. Remove the fender protector side covers (RH and LH): Refer to
.
6. Remove the hood lock switch assembly. Refer to
DLK-299, "HOOD LOCK RELEASE CABLE : Removal
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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< UNIT REMOVAL AND INSTALLATION >
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
18. Disconnect transaxle shift control cable at transaxle side. Refer to
.
19. Disconnect brake booster vacuum hose at brake booster. Refer to
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
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
.
5. Disconnect front stabilizer connecting rod. Refer to
.
6. Remove front brake caliper with piping connected and position them aside. Refer to
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
.
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
.
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
.
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
.
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-
(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
JPBIA1729ZZ
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< UNIT REMOVAL AND INSTALLATION >
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
—
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