Nissan Pathfinder (2009 year). Instruction — part 503
OIL PUMP
LU-15
< DISASSEMBLY AND ASSEMBLY >
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DISASSEMBLY AND ASSEMBLY
OIL PUMP
Disassembly and Assembly
INFOID:0000000003939438
DISASSEMBLY
1.
Remove oil pump cover.
2.
Remove inner rotor and outer rotor from oil pump body.
3.
Remove the regulator valve plug, regulator valve spring and regulator valve.
INSPECTION AFTER DISASSEMBLY
Clearance of Oil Pump Parts
• Measure radial clearance using a suitable tool.
• Measure side clearance using suitable tools.
• Calculate the clearance between inner rotor and oil pump body as
follows.
1.
Measure the inner diameter of oil pump body to brazed portion
(position 5) using suitable tool.
2.
Measure the outer diameter of protruded portion of inner rotor
(position 6) using suitable tool.
3.
Calculate the clearance using the following formula.
• (Clearance) = (Inner diameter of oil pump body) - (Outer diameter of inner rotor)
Regulator Valve Clearance
Body to outer rotor (position 1)
: 0.120 - 0.195 mm (0.0047 - 0.0077 in)
Inner rotor to outer rotor tip (position 2)
: 0.060 - 0.160 mm (0.0024 - 0.0063 in)
PBIC2827E
Body to inner rotor (position 3)
: 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Body to outer rotor (position 4)
: 0.050 - 0.090 mm (0.0020 - 0.0035 in)
PBIC2828E
PBIC0821E
Inner rotor to brazed portion of housing
clearance
: 0.045 - 0.091 mm (0.0018 - 0.0036 in)
2009 Pathfinder
LU-16
< DISASSEMBLY AND ASSEMBLY >
[VQ40DE]
OIL PUMP
Check regulator valve to oil pump cover clearance using the following formula.
• (Clearance) = D
1
(Valve hole diameter) - D
2
(Outer Diameter of
valve)
CAUTION:
• Coat regulator valve with engine oil.
• Check that it falls smoothly into the regulator valve hole by its
own weight.
ASSEMBLY
Installation is in the reverse order of removal.
NOTE:
Install oil pump inner rotor with the grooved face and oil pump outer
rotor with the punch mark to oil pump cover side.
Regulator valve to oil pump cover
: 0.025 - 0.070 mm (0.0010 - 0.0028 in)
PBIC2829E
PBIC2830E
2009 Pathfinder
SERVICE DATA AND SPECIFICATIONS (SDS)
LU-17
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Standard and Limit
INFOID:0000000003939439
OIL PRESSURE
Unit: kPa (kg/cm
2
, psi)
*: Engine oil temperature at 80
°
C (176
°
F)
OIL PUMP
Unit: mm (in)
REGULATOR VALVE
Unit: mm (in)
ENGINE OIL CAPACITY (APPROXIMATE)
Unit:
(US qt, Imp qt)
Engine speed
rpm
Approximate discharge pressure*
Idle speed
More than 98 (1.0, 14)
2,000
More than 294 (3.0, 43)
Body to outer rotor
0.120 - 0.195 (0.0047 - 0.0077)
Inner rotor to outer rotor tip
0.060 - 0.160 (0.0024 - 0.0063)
Body to inner rotor
0.030 - 0.070 (0.0012 - 0.0028)
Body to outer rotor
0.050 - 0.090 (0.0020 - 0.0035)
Inner rotor to brazed portion of housing
0.045 - 0.091 (0.0018 - 0.0036)
Regulator valve to oil pump cover
0.025 - 0.070 (0.0010 - 0.0028)
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)
2009 Pathfinder
LU-18
< PRECAUTION >
[VK56DE]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003939440
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Instruction. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000004448922
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″
LOCK
″
position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1.
Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2.
Use the Intelligent Key or mechanical key to turn the ignition switch to the
″
ACC
″
position. At this time, the
steering lock will be released.
3.
Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4.
Perform the necessary repair operation.
5.
When the repair work is completed, return the ignition switch to the
″
LOCK
″
position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6.
Perform a self-diagnosis check of all control units using CONSULT-III.
Precaution for Liquid Gasket
INFOID:0000000003939441
REMOVAL OF LIQUID GASKET SEALING
2009 Pathfinder
PRECAUTIONS
LU-19
< PRECAUTION >
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• After removing the bolts and nuts, separate the mating surface and
remove the old liquid gasket sealing using Tool.
CAUTION:
Do not damage the mating surfaces.
• Tap (1) the Tool to insert it.
• In areas where the Tool is difficult to use, lightly tap to slide (2) it.
LIQUID GASKET APPLICATION PROCEDURE
1.
Remove the old liquid gasket adhering to the gasket application
surface and the mating surface using suitable tool.
• Remove the liquid gasket completely from the groove of the
liquid gasket application surface, bolts, and bolt holes.
2.
Thoroughly clean the mating surfaces and remove adhering
moisture, grease and foreign material.
3.
Attach the liquid gasket tube to the Tool.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-26, "Recommended Chemical Products and Sealants"
.
4.
Apply the liquid gasket without breaks to the specified location
with the specified dimensions.
• If there is a groove for the liquid gasket application, apply the
liquid gasket to the groove.
• As for the bolt holes, normally apply the liquid gasket inside
the holes. If specified in the procedure, it should also be
applied outside the holes.
• Within five minutes of liquid gasket application, install the mat-
ing component.
• If the liquid gasket protrudes, wipe it off immediately.
• Do not retighten after the installation.
• Wait 30 minutes or more after installation before refilling the
engine with engine oil and engine coolant.
CAUTION:
If there are specific instructions in this instruction, observe them.
Tool number
: KV10111100 (J-37228)
WBIA0566E
PBIC0003E
Tool number
: WS39930000 (
—
)
WBIA0567E
SEM159F
2009 Pathfinder
LU-20
< PREPARATION >
[VK56DE]
PREPARATION
PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000003939442
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service Tool
INFOID:0000000003939443
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
2
, 356 psi)
ST25052000
(J-25695-2)
Hose
Adapting oil pressure gauge to cylinder block
KV10111100
(J-37228)
Seal cutter
Removing steel oil pan and rear timing chain
case
KV10115801
(J-38956)
Oil filter wrench
Removing and installing oil filter
a: 64.3 mm (2.531 in)
WS39930000
(
—
)
Tube presser
Pressing the tube of liquid gasket
S-NT050
S-NT559
NT046
S-NT375
S-NT052
2009 Pathfinder
PREPARATION
LU-21
< PREPARATION >
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Tool name
Description
Power tool
Loosening bolts and nuts
Deep socket
Removing and installing oil pressure switch
Deep socket 26 mm
PBIC0190E
NT818
2009 Pathfinder
LU-22
< FUNCTION DIAGNOSIS >
[VK56DE]
LUBRICATION SYSTEM
FUNCTION DIAGNOSIS
LUBRICATION SYSTEM
Lubrication Circuit
INFOID:0000000003939444
WBIA0399E
1.
Exhaust camshaft
2.
Intake camshaft
3.
Main oil galley
4.
Chain tensioner (Left bank)
5.
Oil filter
6.
Oil cooler
7.
Oil pan
8.
Oil strainer
9.
Oil pump
10. Chain tensioner (Right bank)
2009 Pathfinder
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