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ENGINE LUBRICATION SYSTEM


B ENGINE

                                                                                                                                                                A


                                                                                                                                                                LU
                                                                                                    SECTION
                                                            ENGINE LUBRICATION SYSTEM                                                                           C


                                                                                                                                                                D


                                                                                                                                                                E
                                                                 CONTENTS
PRECAUTIONS ......................................................... 2.         OIL COOLER ........................................................... 10
                                                                                                                                                       .        F
 Precautions for Liquid Gasket ................................. 2     .          Removal and Installation ....................................... 10  .
   LIQUID GASKET APPLICATION PROCEDURE 2                               .....        REMOVAL .......................................................... 10
                                                                                                                                                       .
PREPARATION .......................................................... 3
                                                                       .            INSPECTION AFTER REMOVAL ...................... 11                 .        G
 Special Service Tools .............................................. 3.            INSTALLATION .................................................. 12 .
 Commercial Service Tools ....................................... 3    .            INSPECTION AFTER INSTALLATION ............... 12                   .
LUBRICATION SYSTEM ........................................... 4       .         OIL PUMP ................................................................ 13
                                                                                                                                                       .
                                                                                                                                                                H
 Lubrication Circuit ................................................... 4
                                                                       .          Removal and Installation ....................................... 13  .
 System Drawing ...................................................... 5
                                                                       .            REMOVAL .......................................................... 13
                                                                                                                                                       .
ENGINE OIL .............................................................. 6
                                                                       .            INSTALLATION .................................................. 13 .
 Inspection ................................................................ 6
                                                                       .            INSPECTION AFTER INSTALLATION ............... 13                   .         I
   OIL LEVEL ........................................................... 6
                                                                       .          Disassembly and Assembly ................................... 13      .
   ENGINE OIL APPEARANCE ............................... 6             .            DISASSEMBLY .................................................. 13  .
   ENGINE OIL LEAKAGE ....................................... 6        .            INSPECTION AFTER DISASSEMBLY ............... 13                    .         J
   OIL PRESSURE CHECK ..................................... 6          .            ASSEMBLY ........................................................ 15
                                                                                                                                                       .
 Changing Engine Oil ............................................... 8 .         SERVICE DATA AND SPECIFICATIONS (SDS) ..... 16                        .
OIL FILTER ................................................................ 9
                                                                       .          Standard and Limit ................................................. 16
                                                                                                                                                       .
                                                                                                                                                                K
 Removal and Installation ......................................... 9  .            OIL PRESSURE ................................................. 16  .
   REMOVAL ............................................................ 9
                                                                       .            OIL PUMP .......................................................... 16
                                                                                                                                                       .
   INSTALLATION .................................................... 9 .            REGULATOR VALVE ......................................... 16       .
   INSPECTION AFTER INSTALLATION ................ 9                    .            OIL CAPACITY (APPROXIMATE) ...................... 16               .         L
                                                                                  Tightening Torque .................................................. 16
                                                                                                                                                       .

                                                                                                                                                                M




Revision; 2004 April                                                        LU-1                                                     2003 G35 Sedan
                                             PRECAUTIONS

PRECAUTIONS                                                                                            PFP:00001

Precautions for Liquid Gasket                                                                             ABS004S3

LIQUID GASKET APPLICATION PROCEDURE
1.   Remove the old liquid gasket adhering to the gasket application surface and the mating surface.
2.   Wipe the gasket application surface and the mating surface with white gasoline (lighting and heating use)
     to remove adhering moisture, grease and foreign materials.
3.   Attach the liquid gasket tube to the tube presser [special service
     tool: WS39930000 ( -- )].
     Use Genuine Thread Sealant or equivalent. Refer to GI-45,
     "RECOMMENDED CHEMICAL PRODUCTS AND SEAL-
     ANTS".
4.   Apply the liquid gasket without breaks to the specified location
     with the specified dimensions.
     q Within five minutes of gasket application, install the mating
        component.
     q If the liquid gasket protrudes, wipe it off immediately.
                                                                                                        EMA0622D
     q Do not retighten after the installation.

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




Revision; 2004 April                                 LU-2                                      2003 G35 Sedan
                                                       PREPARATION

PREPARATION                                                                                                                   PFP:00002
                                                                                                                                            A
Special Service Tools                                                                                                            ABS00010

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
  Tool number                                                                                                                               LU
  (Kent-Moore No.)                                                                       Description
  Tool name

  ST25051001                                                                             Measuring oil pressure
                                                                                                                                            C
  (J25695-1)                                                                             Maximum measuring range: 2,452 kPa (25
  Oil pressure gauge                                                                     kg/cm2 , 356 psi)

                                                                                                                                            D

                                                                         NT050


  ST25052000                                                                             Adapting oil pressure gauge to upper oil pan
                                                                                                                                            E
  (J25695-2)                                                                             (upper)
  Hose
                                                                                                                                            F


                                                                         S-NT559
                                                                                                                                            G
  KV10115801                                                                             Removing and installing oil filter
  (J38956)                                                                               a: 64.3 mm (2.531 in)
  Oil filter wrench
                                                                                                                                            H



                                                                                                                                             I
                                                                         S-NT375


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



                                                                                                                                            K
                                                                         NT052



                                                                                                                                             L
Commercial Service Tools                                                                                                         ABS00011



  Tool name                                                                              Description                                        M
  Deep socket                                                                            Removing and installing oil pressure switch
                                                                                         a: 27 mm (1.06 in)




                                                                         PBIC2072E


  Power tool                                                                             Loosening nuts and bolts




                                                                         PBIC0190E




Revision; 2004 April                                            LU-3                                                 2003 G35 Sedan
                       LUBRICATION SYSTEM

LUBRICATION SYSTEM                                PFP:15010

Lubrication Circuit                                     ABS00012




                                                 PBIC1403E




Revision; 2004 April          LU-4          2003 G35 Sedan
                       LUBRICATION SYSTEM

System Drawing                                          ABS00013

                                                                   A


                                                                   LU



                                                                   C


                                                                   D


                                                                   E



                                                                   F


                                                                   G


                                                                   H



                                                 SBIA0534E          I


                                                                    J



                                                                   K


                                                                    L



                                                                   M




Revision; 2004 April          LU-5          2003 G35 Sedan
                                                 ENGINE OIL

ENGINE OIL                                                                                               PFP:KLA92

Inspection                                                                                                    ABS00014

OIL LEVEL
NOTE:
Before starting engine, put vehicle horizontally and check the engine oil level. If engine is already started, stop
it 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
     the range shown in the figure.
3. If it is out of range, adjust it.




                                                                                                           PBIC0249E



NOTE:
When checking oil level, insert oil level gauge with its tip aligned with
oil level gauge guide on cylinder head. (In figure, air cleaner case
and air duct are removed.)




                                                                                                           KBIA1343E


ENGINE OIL APPEARANCE
q   Check engine oil for white turbidity or heavy contamination.
q   If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant.
    Repair or replace damaged parts.
ENGINE OIL LEAKAGE
Check for engine oil leakage around the following areas:
q  Oil pan
q  Oil pan drain plug
q  Oil pressure switch
q  Oil filter
q  Oil cooler
q  Water pump cover
q  Chain tensioner cover
q  Intake valve timing control cover and intake valve timing control solenoid valve
q  Mating surface between cylinder block and cylinder head
q  Mating surface between cylinder head and rocker cover
q  Mating surface between front timing chain case and rear timing chain case
q  Mating surface between rear timing chain case and cylinder block
q  Crankshaft oil seals (front and rear)
OIL PRESSURE CHECK
WARNING:
q Be careful not to burn yourself, as engine oil may be hot.
Revision; 2004 April                                   LU-6                                      2003 G35 Sedan
                                                ENGINE OIL

q    Oil pressure check should be done in "Neutral position" (M/T models) or "Parking position" (A/T
     models).                                                                                         A
1.   Check oil level. Refer to LU-6, "Inspection" .
2.   Remove undercover with power tool.
3.   Disconnect oil pressure switch harness connector.                                               LU
4.   Remove oil pressure switch using deep socket (commercial ser-
     vice tool).
     CAUTION:                                                                                         C
     Do not drop or shock oil pressure switch.

                                                                                                                        D



                                                                                                            PBIC0818E
                                                                                                                        E

5.   Install oil pressure gauge and hose (special service tool).
                                                                                                                        F


                                                                                                                        G


                                                                                                                        H

                                                                                                            SLC926

                                                                                                                        I
6.   Start engine and warm it up to normal operating temperature.
7.   Check oil pressure with engine running under no-load.
     NOTE:                                                                                                              J
     When engine oil temperature is low, engine oil pressure becomes high.
     Engine oil pressure [Engine oil temperature at 80



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