As for the bolt holes, normally apply liquid gasket inside the
holes. Occasionally, it should be applied outside the holes.
Make sure to read the text of service manual.

●

Within five minutes of liquid gasket application, install the mat-
ing component.

●

If liquid gasket protrudes, wipe it off immediately.

●

Do not retighten nuts or bolts after the installation.

●

After 30 minutes or more have passed from the installation, fill
engine oil and engine coolant.

CAUTION:

If there are specific instructions in this manual, observe them.

PBIC0003E

Tool number

: WS39930000 (

—

)

WBIA0567E

SEM159F

PREPARATION

LU-3

2005 Pathfinder

PREPARATION

PFP:00002

Special Service Tools

EBS00KJA

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tools

EBS00KJB

Tool number
(Kent-Moore No.)
Tool name

Description

ST25051001
(J-25695-1)
Oil pressure gauge

Measuring oil pressure
Maximum measuring range: 2,452 kPa (25
kg/cm

, 356 psi)

ST25052000
(J-25695-2)
Hose

Adapting oil pressure gauge to oil pan (upper)

KV10115801
(J-38956)
Oil filter wrench

Removing oil filter
a: 64.3 mm (2.531 in)

WS39930000
(

—

)

Tube presser

Pressing the tube of liquid gasket

NT050

S-NT559

S-NT375

NT052

Tool name

Description

Power tool

Loosening nuts and bolts

Deep socket

Removing and installing oil pressure sensor
a: 24 mm (0.94 in)

PBIC0190E

PBIC2072E

LU-4

LUBRICATION SYSTEM

2005 Pathfinder

LUBRICATION SYSTEM

PFP:15010

Lubrication Circuit

EBS00KJC

PBIC2821E

LUBRICATION SYSTEM

LU-5

2005 Pathfinder

System Chart

EBS00KJD

PBIC2822E

LU-6

ENGINE OIL

2005 Pathfinder

ENGINE OIL

PFP:KLA92

Inspection

EBS00KJE

ENGINE OIL LEVEL

Before starting the engine make sure the vehicle is parked on a flat and level surface, then check the oil level.
If the engine is already running, turn it off and allow 10 minutes before checking.

Pull out oil level gauge and wipe it clean.

Insert oil level gauge and make sure the engine oil level is within
the range as indicated on gauge.

If the engine oil is out of range, add oil as necessary.

ENGINE OIL APPEARANCE

●

Check engine oil for white milky or excessive contamination.

●

If engine oil becomes milky, it is highly probable that it is contaminated with engine coolant. Repair or
replace damaged parts.

ENGINE OIL LEAKAGE

Check for oil leakage around the following areas:

●

Oil pans (lower and upper)

●

Oil pan drain plug

●

Oil pressure sensor

●

Oil filter

●

Oil cooler

●

Water pump cover

●

Chain tensioner cover

●

Intake valve timing control cover and intake valve timing control solenoid valve

●

Mating surface between cylinder block and cylinder head

●

Mating surface between lower cylinder block and cylinder block

●

Mating surface between cylinder head and rocker cover

●

Mating surface between front timing chain case and rear timing chain case

●

Mating surface between rear timing chain case and cylinder head

●

Mating surface between rear timing chain case and cylinder block

●

Mating surface between rear timing chain case and lower cylinder block

●

Mating surface between rear timing chain case and oil pan (upper)

●

Crankshaft oil seals (front and rear)

●

Oil level gauge guide

●

Camshaft position sensor (PHASE)

PBIC2823E

ENGINE OIL

LU-7

2005 Pathfinder

OIL PRESSURE CHECK

WARNING:

●

Be careful not to burn yourself, as engine oil may be hot.

●

Oil pressure check should be done in “Parking position” (A/T models).

Check engine oil level. Refer to

LU-6, "ENGINE OIL LEVEL"

Remove undercover with power tool.

Disconnect oil pressure sensor harness connector.

Disconnect harness connector at oil pressure sensor, and
remove oil pressure sensor.

CAUTION:

Do not drop or shock oil pressure sensor.

Install Tools.

Start engine and warm it up to normal operating temperature.

Check oil pressure with engine running under no-load.
NOTE:
When engine oil temperature is low, engine oil pressure becomes high.

Engine oil pressure [Engine oil temperature at 80

C (176

F)]

If difference is extreme, check oil passage and oil pump for oil leaks.

After the inspections, install oil pressure sensor as follows:

Remove old liquid gasket adhering to oil presser sensor and engine.

Apply liquid gasket and tighten oil pressure sensor to the specification.
Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-45, "Recommended Chemical Prod-

ucts and Sealants"

After warming up engine, make sure there is no leakage of engine oil with running engine.

LBIA0424E

Tool numbers

: ST25051001 (J-25695-1)

: ST25052000 (J-25695-2)

WBIA0571E

Engine speed

rpm

Approximate discharge pressure

kPa (kg/cm

, psi)

Idle speed

More than 98 (1.0, 14)

2,000

More than 294 (3.0, 43)

Oil pressure sensor torque

: 14.7 N·m (1.5 kg-m, 11 ft-lb)

LU-8

ENGINE OIL

2005 Pathfinder

Changing Engine Oil

EBS00KJF

WARNING:

●

Be careful not to burn yourself, as engine oil may be hot.

●

Prolonged and repeated contact with used engine oil may cause skin cancer; try to avoid direct
skin contact with used engine oil. If skin contact is made, wash thoroughly with soap or hand
cleaner as soon as possible.

Warm up engine, put vehicle on flat and level surface then check for engine oil leakage from engine com-
ponents. Refer to

LU-6, "ENGINE OIL LEAKAGE"

Stop engine and wait for 10 minutes.

Loosen oil filler cap and then remove drain plug.

Drain engine oil.

Install drain plug with new washer. Refer to

EM-26, "OIL PAN AND OIL STRAINER"

CAUTION:

Be sure to clean drain plug and install with new washer.

Refill with new engine oil.
Engine oil specification and viscosity:
Refer to

Engine oil capacity (Approximate):

Unit:

(US qt, Imp qt)

CAUTION:

●

When filling engine oil, do not pull out oil level gauge.

●

The refill capacity depends on the engine oil temperature and drain time. Use these specifica-
tions for reference only.

●

Always use oil level gauge to determine the proper amount of engine oil in engine.

Warm up engine and check area around drain plug and oil filter for oil leakage.

Stop engine and wait for 10 minutes.

Check the engine oil level. Refer to

LU-6, "ENGINE OIL LEVEL"

Oil pan drain plug

: 34.3 N·m (3.5 kg-m, 25ft-lb)

Drain and refill

With oil filter change

5.1 (5 3/8, 4-1/2)

Without oil filter change

4.8 (5-1/8, 4-1/4)

Dry engine (Overhaul)

6.3 (6-5/8, 5-1/2)

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