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LU


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B ENGINE

                                                                                                                                                                A




                                                            ENGINE LUBRICATION SYSTEM
                                                                                                    SECTION                   LU                                LU



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                                                                                                                                                                E
                                                                 CONTENTS
PRECAUTIONS ......................................................... 2.         OIL COOLER ........................................................... 11
                                                                                                                                                       .        F
 Precautions for Supplemental Restraint System                                    Removal and Installation ....................................... 11  .
 (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-                                            REMOVAL .......................................................... 11
                                                                                                                                                       .
 SIONER" ................................................................. 2
                                                                       .            INSPECTION AFTER REMOVAL ...................... 12                 .        G
 Precautions for Liquid Gasket ................................. 2     .            INSTALLATION .................................................. 12 .
   LIQUID GASKET APPLICATION PROCEDURE 2                               .....        INSPECTION AFTER INSTALLATION ............... 12                   .
PREPARATION .......................................................... 4
                                                                       .         OIL PUMP ................................................................ 13
                                                                                                                                                       .
                                                                                                                                                                H
 Special Service Tools .............................................. 4.          Removal and Installation ....................................... 13  .
 Commercial Service Tools ....................................... 4    .            REMOVAL .......................................................... 13
                                                                                                                                                       .
LUBRICATION SYSTEM ........................................... 5       .            INSTALLATION .................................................. 13 .
 Lubrication Circuit ................................................... 5
                                                                       .            INSPECTION AFTER INSTALLATION ............... 13                   .         I
 System Chart .......................................................... 6
                                                                       .          Disassembly and Assembly ................................... 13      .
ENGINE OIL .............................................................. 7
                                                                       .            DISASSEMBLY .................................................. 13  .
 Inspection ................................................................ 7
                                                                       .            INSPECTION AFTER DISASSEMBLY ............... 14                    .         J
   ENGINE OIL LEVEL ............................................ 7     .            ASSEMBLY ........................................................ 15
                                                                                                                                                       .
   ENGINE OIL APPEARANCE ............................... 7             .         SERVICE DATA AND SPECIFICATIONS (SDS) ..... 16                        .
   ENGINE OIL LEAKAGE ....................................... 7        .          Standard and Limit ................................................. 16
                                                                                                                                                       .
                                                                                                                                                                K
   OIL PRESSURE CHECK ..................................... 8          .            OIL PRESSURE ................................................. 16  .
 Changing Engine Oil ............................................... 9 .            OIL CAPACITY (APPROXIMATE) ...................... 16               .
OIL FILTER .............................................................. 10
                                                                       .            OIL PUMP .......................................................... 16
                                                                                                                                                       .
 Changing Oil Filter ................................................ 10
                                                                       .            REGULATOR VALVE ......................................... 16       .         L



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Revision: September 2006                                                    LU-1                                                             2007 Xterra
                                               PRECAUTIONS

PRECAUTIONS                                                         PFP:00001

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER"                                                                                            EBS00T2H


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 SRS and SB section of this Service Man-
ual.
WARNING:
G    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 per-
     formed by an authorized NISSAN/INFINITI dealer.
G    Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
     sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
     Bag Module, see the SRS section.
G    Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
     Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
     harness connectors.
Precautions for Liquid Gasket                                                                                  EBS00QCE

LIQUID GASKET APPLICATION PROCEDURE
1.   Remove old liquid gasket adhering to the liquid gasket applica-
     tion surface and the mating surface, Using scraper.
     G Remove 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 materials.




                                                                                                            PBIC0003E



3.   Attach liquid gasket tube to Tool.
        Tool number       : WS39930000 (     --   )
     Use Genuine RTV Silicone Sealant or equivalent. Refer to
     GI-47, "Recommended Chemical Products and Sealants" .
4.   Apply liquid gasket without breaks to the specified location with
     the specified dimensions.
     G If there is a groove for the liquid gasket application, apply liq-
       uid gasket to the groove.


                                                                                                            WBIA0567E




Revision: September 2006                               LU-2                                             2007 Xterra
                                              PRECAUTIONS

    G  As for the bolt holes, normally apply liquid gasket inside the
       holes. Occasionally, it should be applied outside the holes.                       A
       Make sure to read the text of service manual.
     G Within five minutes of liquid gasket application, install the mat-
       ing component.                                                                     LU
     G If liquid gasket protrudes, wipe it off immediately.

     G Do not retighten nuts or bolts after the installation.

     G After 30 minutes or more have passed from the installation, fill                   C
       engine oil and engine coolant.
CAUTION:                                                                       SEM159F
If there are specific instructions in this manual, observe them.                          D



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Revision: September 2006                              LU-3                  2007 Xterra
                                                       PREPARATION

PREPARATION                                                                                                                     PFP:00002

Special Service Tools                                                                                                              EBS00QCF

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
  Tool number                                                                             Description
  (Kent-Moore No.)
  Tool name
  ST25051001                                                                             Measuring oil pressure
  (J-25695-1)                                                                            Maximum measuring range: 2,452 kPa (25
  Oil pressure gauge                                                                     kg/cm2 , 356 psi)




                                                                         NT050


  ST25052000                                                                             Adapting oil pressure gauge to oil pan (upper)
  (J-25695-2)
  Hose




                                                                         S-NT559


  KV10115801                                                                             Removing oil filter
  (J-38956)                                                                              a: 64.3 mm (2.531 in)
  Oil filter wrench




                                                                         S-NT375


  WS39930000                                                                             Pressing the tube of liquid gasket
  ( -- )
  Tube presser




                                                                         NT052




Commercial Service Tools                                                                                                           EBS00QCG


  Tool name                                                                              Description
  Power tool                                                                             Loosening nuts and bolts




                                                                         PBIC0190E


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




                                                                         PBIC2072E




Revision: September 2006                                        LU-4                                                          2007 Xterra
                           LUBRICATION SYSTEM

LUBRICATION SYSTEM                                PFP:15010
                                                                  A
Lubrication Circuit                                    EBS00QCH




                                                                  LU



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                                                 PBIC2821E


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Revision: September 2006          LU-5          2007 Xterra
                           LUBRICATION SYSTEM

System Chart                                            EBS00QCI




                                                 PBIC2822E




Revision: September 2006          LU-6          2007 Xterra
                                              ENGINE OIL

ENGINE OIL                                                                                            PFP:KLA92
                                                                                                                     A
Inspection                                                                                                EBS00QCJ

ENGINE OIL LEVEL
Before starting the engine make sure the vehicle is parked on a flat and level surface, then check the oil level. LU
If the engine is already running, turn it off and allow 10 minutes before checking.
1. Pull out oil level gauge and wipe it clean.
2. Insert oil level gauge and make sure the engine oil level is within                                             C
     the range as indicated on gauge.
3. If the engine oil is out of range, add oil as necessary.
                                                                                                                     D



                                                                                                                     E


                                                                                                       PBIC2823E
                                                                                                                     F
ENGINE OIL APPEARANCE
G   Check engine oil for white milky or excessive contamination.
G   If engine oil becomes milky, it is highly probable that it is contaminated with engine coolant. Repair or        G
    replace damaged parts.
ENGINE OIL LEAKAGE                                                                                                   H
Check for oil leakage around the following areas:
G  Oil pans (lower and upper)
G  Oil pan drain plug                                                                                                I
G  Oil pressure switch
G  Oil filter
G  Oil cooler                                                                                                        J
G  Water pump cover
G  Chain tensioner cover
                                                                                                                     K
G  Intake valve timing control cover and intake valve timing control solenoid valve
G  Mating surface between cylinder block and cylinder head
G  Mating surface between lower cylinder block and cylinder block                                                    L
G  Mating surface between cylinder head and rocker cover
G  Mating surface between front timing chain case and rear timing chain case
G  Mating surface between rear timing chain case and cylinder head                                                   M
G  Mating surface between rear timing chain case and cylinder block
G  Mating surface between rear timing chain case and lower cylinder block
G  Mating surface between rear timing chain case and oil pan (upper)
G  Crankshaft oil seals (front and rear)
G  Oil level gauge guide
G  Camshaft position sensor (PHASE)




Revision: September 2006                            LU-7                                           2007 Xterra
                                              ENGINE OIL

OIL PRESSURE CHECK
WARNING:
G  Be careful not to burn yourself, as engine oil may be hot.
G  Oil pressure check should be done in "Parking position" (A/T models).
1. Check engine oil level. Refer to LU-7, "ENGINE OIL LEVEL" .
2. Remove undercover with power tool.
3. Disconnect oil pressure switch harness connector.
4. Disconnect harness connector at oil pressure switch (B), and
   remove oil pressure switch (B).
   CAUTION:
   Do not drop or shock oil pressure switch.
   G A: Oil pan (upper)

   G   



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