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ENGINE MECHANICAL


B ENGINE

                                                                                                                                                                          A




                                                                                                      SECTION
                                                                                             ENGINE MECHANICAL
                                                                                                                                  EM                                      EM



                                                                                                                                                                          C


                                                                                                                                                                          D


                                                                                                                                                                          E
                                                                     CONTENTS
                                 VQ35DE                                                  INSTALLATION .................................................. 18      .        F
                                                                                        Changing Air Cleaner Filter ................................... 18       .
PRECAUTIONS ......................................................... 5     .            INSPECTION ..................................................... 18     .
 Precautions Necessary for Steering Wheel Rotation                                       REMOVAL .......................................................... 18   .        G
 After Battery Disconnect ......................................... 5       .            INSTALLATION .................................................. 18      .
   OPERATION PROCEDURE ................................ 5                   .         INTAKE MANIFOLD COLLECTOR ......................... 19                     .
 Precautions for Drain Engine Coolant and Engine                                        Components .......................................................... 19 .
 Oil ............................................................................ 5
                                                                            .                                                                                             H
                                                                                        Removal and Installation ....................................... 19      .
 Precautions for Disconnecting Fuel Piping ............. 5                  .            REMOVAL .......................................................... 19   .
 Precautions for Removal and Disassembly ............ 5                     .            INSPECTION AFTER REMOVAL ...................... 21                      .
 Precautions for Inspection, Repair and Replace-                                         INSTALLATION .................................................. 22      .         I
 ment ........................................................................ 5
                                                                            .         INTAKE MANIFOLD ................................................ 24        .
 Precautions for Assembly and Installation .............. 6                 .           Components .......................................................... 24 .
 Precautions for Angle Tightening ............................ 6            .           Removal and Installation ....................................... 24      .        J
 Precautions for Liquid Gasket ................................. 6          .            REMOVAL .......................................................... 24   .
   REMOVAL OF LIQUID GASKET SEALING ......... 6                             .            INSPECTION AFTER REMOVAL ...................... 25                      .
   LIQUID GASKET APPLICATION PROCEDURE 6                                    .....        INSTALLATION .................................................. 25      .
PREPARATION .......................................................... 8    .                                                                                             K
                                                                                      EXHAUST MANIFOLD AND THREE WAY CATA-
 Special Service Tools .............................................. 8     .         LYST ......................................................................... 26
                                                                                                                                                                 .
 Commercial Service Tools ..................................... 10          .           Components .......................................................... 26 .
NOISE, VIBRATION AND HARSHNESS (NVH)                                                    Removal and Installation ....................................... 26      .        L
TROUBLESHOOTING ............................................. 13            .            REMOVAL .......................................................... 26   .
 NVH Troubleshooting -- Engine Noise ................. 13                   .            INSPECTION AFTER REMOVAL ...................... 28                      .
 Use the Chart Below to Help You Find the Cause                                          INSTALLATION .................................................. 28      .        M
 of the Symptom. .................................................... 14    .         OIL PAN AND OIL STRAINER ................................ 30               .
DRIVE BELTS .......................................................... 15   .           Components (2WD Models) .................................. 30            .
 Checking Drive Belts ............................................. 15      .           Removal and Installation (2WD Models) ............... 30                 .
 Tension Adjustment ............................................... 15      .            REMOVAL .......................................................... 30   .
   ALTERNATOR AND POWER STEERING OIL                                                     INSPECTION AFTER REMOVAL ...................... 32                      .
   PUMP BELT ....................................................... 16     .            INSTALLATION .................................................. 32      .
   A/C COMPRESSOR BELT ................................ 16                  .            INSPECTION AFTER INSTALLATION ............... 35                        .
 Removal and Installation ....................................... 16        .           Components (AWD Models) .................................. 35            .
   REMOVAL .......................................................... 16    .           Removal and Installation (AWD Models) ............... 36                 .
   INSTALLATION .................................................. 16       .            REMOVAL .......................................................... 36   .
AIR CLEANER AND AIR DUCT .............................. 17                  .            INSPECTION AFTER REMOVAL ...................... 38                      .
 Components .......................................................... 17   .            INSTALLATION .................................................. 38      .
 Removal and Installation ....................................... 17        .            INSPECTION AFTER INSTALLATION ............... 41                        .
   REMOVAL .......................................................... 17    .
   INSPECTION AFTER REMOVAL ...................... 17                       .




Revision: 2006 December                                                         EM-1                                                          2006 FX35/FX45
IGNITION COIL ........................................................ 42
                                                                       .         Removal and Installation ...................................... 102      .
  Components .......................................................... 42
                                                                       .           REMOVAL ......................................................... 102  .
  Removal and Installation ....................................... 42  .           INSPECTION AFTER REMOVAL ..................... 103                     .
   REMOVAL .......................................................... 42
                                                                       .           INSTALLATION ................................................. 104     .
   INSTALLATION ................................................... 42 .           INSPECTION AFTER INSTALLATION ............. 105                        .
SPARK PLUG (PLATINUM-TIPPED TYPE) ............ 43                      .         Disassembly and Assembly ................................. 106           .
  Components .......................................................... 43
                                                                       .           DISASSEMBLY ................................................. 106      .
  Removal and Installation ....................................... 43  .           ASSEMBLY ....................................................... 107   .
   REMOVAL .......................................................... 43
                                                                       .         Inspection After Disassembly ............................... 108         .
   INSPECTION AFTER REMOVAL ....................... 43                 .           VALVE DIMENSIONS ....................................... 108           .
   INSTALLATION ................................................... 44 .           VALVE GUIDE CLEARANCE ........................... 108                  .
FUEL INJECTOR AND FUEL TUBE ....................... 45                 .           VALVE GUIDE REPLACEMENT ...................... 109                     .
  Components .......................................................... 45
                                                                       .           VALVE SEAT CONTACT ................................... 110             .
  Removal and Installation ....................................... 45  .           VALVE SEAT REPLACEMENT ......................... 110                   .
   REMOVAL .......................................................... 45
                                                                       .           VALVE SPRING SQUARENESS ...................... 111                     .
   INSTALLATION ................................................... 47 .           VALVE SPRING DIMENSIONS AND VALVE
   INSPECTION AFTER INSTALLATION ............... 50                    .           SPRING PRESSURE LOAD ............................. 112                 .
ROCKER COVER .................................................... 51   .        ENGINE ASSEMBLY .............................................. 113        .
  Components .......................................................... 51
                                                                       .         Components (2WD Models) ................................. 113            .
  Removal and Installation ....................................... 51  .         Removal and Installation (2WD Models) .............. 113                 .
   REMOVAL .......................................................... 51
                                                                       .           REMOVAL ......................................................... 114  .
   INSTALLATION ................................................... 52 .           INSTALLATION ................................................. 116     .
FRONT TIMING CHAIN CASE ................................ 54            .           INSPECTION AFTER INSTALLATION ............. 117                        .
  Removal and Installation ....................................... 54  .         Components (AWD Models) ................................ 118             .
   REMOVAL .......................................................... 54
                                                                       .         Removal and Installation (AWD Models) ............. 118                  .
   INSTALLATION ................................................... 58 .           REMOVAL ......................................................... 119  .
   INSPECTION AFTER INSTALLATION ............... 63                    .           INSTALLATION ................................................. 121     .
TIMING CHAIN ......................................................... 64
                                                                       .           INSPECTION AFTER INSTALLATION ............. 122                        .
  Components .......................................................... 64
                                                                       .        CYLINDER BLOCK ................................................ 123       .
  Removal and Installation ....................................... 65  .         Components ......................................................... 123 .
   REMOVAL .......................................................... 65
                                                                       .         Disassembly and Assembly ................................. 124           .
   INSPECTION AFTER REMOVAL ....................... 72                 .           DISASSEMBLY ................................................. 124      .
   INSTALLATION ................................................... 72 .           ASSEMBLY ....................................................... 129   .
   INSPECTION AFTER INSTALLATION ............... 82                    .         How to Select Piston and Bearing ....................... 136             .
CAMSHAFT .............................................................. 83
                                                                       .           DESCRIPTION ................................................. 136      .
  Components .......................................................... 83
                                                                       .           HOW TO SELECT PISTON .............................. 136                .
  Removal and Installation ....................................... 84  .           HOW TO SELECT CONNECTING ROD BEAR-
   REMOVAL .......................................................... 84
                                                                       .           ING .................................................................... 137
                                                                                                                                                          .
   INSPECTION AFTER REMOVAL ....................... 85                 .           HOW TO SELECT MAIN BEARING ................. 138                       .
   INSTALLATION ................................................... 88 .         Inspection After Disassembly ............................... 141         .
   INSPECTION AFTER INSTALLATION ............... 92                    .           CRANKSHAFT END PLAY ............................... 141                .
  Valve Clearance ..................................................... 93
                                                                       .           CONNECTING ROD SIDE CLEARANCE ........ 141                             .
   INSPECTION ...................................................... 93.           PISTON TO PISTON PIN OIL CLEARANCE .... 141                            .
   ADJUSTMENT ................................................... 96   .           PISTON RING SIDE CLEARANCE .................. 142                      .
OIL SEAL ................................................................. 98
                                                                       .           PISTON RING END GAP ................................. 142              .
  Removal and Installation of Valve Oil Seal ............ 98           .           CONNECTING ROD BEND AND TORSION .... 143                               .
   REMOVAL .......................................................... 98
                                                                       .           CONNECTING ROD BIG END DIAMETER ..... 143                              .
   INSTALLATION ................................................... 98 .           CONNECTING ROD BUSHING OIL CLEAR-
  Removal and Installation of Front Oil Seal ............ 99           .           ANCE ................................................................ 143
                                                                                                                                                          .
   REMOVAL .......................................................... 99
                                                                       .           CYLINDER BLOCK DISTORTION ................... 144                      .
   INSTALLATION ................................................... 99 .           MAIN BEARING HOUSING INNER DIAMETER.145
  Removal and Installation of Rear Oil Seal ............. 99           .           PISTON TO CYLINDER BORE CLEARANCE . 145
   REMOVAL .......................................................... 99
                                                                       .           CRANKSHAFT MAIN JOURNAL DIAMETER .. 146                                .
   INSTALLATION ................................................. 100  .           CRANKSHAFT PIN JOURNAL DIAMETER ..... 147                              .
CYLINDER HEAD .................................................. 101   .           CRANKSHAFT OUT-OF-ROUND AND TAPER.147
  On-Vehicle Service .............................................. 101.           CRANKSHAFT RUNOUT ................................. 147                .
   CHECKING COMPRESSION PRESSURE ...... 101                            .           CONNECTING ROD BEARING OIL CLEAR-
  Components ........................................................ 102
                                                                       .


Revision: 2006 December                                                   EM-2                                                         2006 FX35/FX45
   ANCE ............................................................... 147
                                                                      .               Checking Drive Belts ........................................... 174     .
   MAIN BEARING OIL CLEARANCE ................. 148                   .               Tension Adjustment ............................................. 174     .       A
   MAIN BEARING CRUSH HEIGHT ................... 149                  .               Removal and Installation ..................................... 174       .
   CONNECTING ROD BEARING CRUSH                                                         REMOVAL ........................................................ 174   .
   HEIGHT ............................................................ 149
                                                                      .                 INSTALLATION ................................................ 175      .       EM
   MAIN BEARING CAP BOLT OUTER DIAMETER 149                           .               Components ........................................................ 176  .
   CONNECTING ROD BOLT OUTER DIAMETER 150                             .               Drive Belt Auto Tensioner and Idler Pulley .......... 176                .
   DRIVE PLATE .................................................. 150 .                 REMOVAL ........................................................ 176   .
   OIL JET ............................................................ 150
                                                                      .                 INSTALLATION ................................................ 176      .       C
   OIL JET RELIEF VALVE .................................. 150        .             AIR CLEANER AND AIR DUCT ............................ 177                  .
SERVICE DATA AND SPECIFICATIONS (SDS) ... 151                         .               Components ........................................................ 177  .
 Standard and Limit .............................................. 151.               Removal and Installation ..................................... 177       .       D
   GENERAL SPECIFICATIONS ......................... 151               .                 REMOVAL ........................................................ 177   .
   DRIVE BELT .................................................... 152.                 INSPECTION AFTER REMOVAL .................... 178                      .
   INTAKE MANIFOLD COLLECTOR, INTAKE                                                    INSTALLATION ................................................ 178      .       E
   MANIFOLD AND EXHAUST MANIFOLD ........ 152                         .               Changing Air Cleaner Filter ................................. 178        .
   SPARK PLUG .................................................. 152  .                 REMOVAL ........................................................ 178   .
   CAMSHAFT AND CAMSHAFT BEARING ....... 153                          .                 INSTALLATION ................................................ 178      .
   CYLINDER HEAD ............................................ 155     .             INTAKE MANIFOLD .............................................. 179         .       F
   CYLINDER BLOCK .......................................... 158      .               Components ........................................................ 179  .
   PISTON, PISTON RING AND PISTON PIN ..... 159                       .               Removal and Installation ..................................... 180       .
   CONNECTING ROD ........................................ 160        .                 REMOVAL ........................................................ 180   .       G
   CRANKSHAFT ................................................. 161   .                 INSPECTION AFTER REMOVAL .................... 182                      .
   MAIN BEARING ............................................... 162   .                 INSTALLATION ................................................ 182      .
   CONNECTING ROD BEARING ....................... 163                 .                 INSPECTION AFTER INSTALLATION ............. 182                        .       H
                                                                                    EXHAUST MANIFOLD AND THREE WAY CATA-
                                 VK45DE                                             LYST ....................................................................... 183
                                                                                                                                                               .
                                                                                      Components ........................................................ 183  .
PRECAUTIONS ..................................................... 164       .                                                                                           I
                                                                                      Removal and Installation ..................................... 183       .
 Precautions Necessary for Steering Wheel Rotation                                      REMOVAL ........................................................ 183   .
 After Battery Disconnect ..................................... 164         .           INSPECTION AFTER REMOVAL .................... 185                      .
   OPERATION PROCEDURE ............................ 164                     .           INSTALLATION ................................................ 185      .       J
 Precautions for Drain Engine Coolant and Engine                                    OIL PAN AND OIL STRAINER .............................. 187                .
 Oil ........................................................................ 164
                                                                            .         Components ........................................................ 187  .
 Precautions for Disconnecting Fuel Piping ......... 164                    .         Removal and Installation ..................................... 187       .       K
 Precautions for Removal and Disassembly ........ 164                       .           REMOVAL ........................................................ 187   .
 Precautions for Inspection, Repair and Replace-                                        INSPECTION AFTER REMOVAL .................... 189                      .
 ment .................................................................... 164
                                                                            .           INSTALLATION ................................................ 189      .       L
 Precautions for Assembly and Installation .......... 164                   .           INSPECTION AFTER INSTALLATION ............. 190                        .
 Parts Requiring Angle Tightening ........................ 165              .       IGNITION COIL ...................................................... 191   .
 Precautions for Liquid Gasket ............................. 165            .         Components ........................................................ 191  .
   REMOVAL OF LIQUID GASKET SEALING ..... 165                               .         Removal and Installation ..................................... 191       .       M
   LIQUID GASKET APPLICATION PROCEDURE 165                                  .           REMOVAL ........................................................ 191   .
PREPARATION ...................................................... 167      .           INSTALLATION ................................................ 191      .
 Special Service Tools .......................................... 167       .       SPARK PLUG (PLATINUM-TIPPED TYPE) .......... 192                           .
 Commercial Service Tools ................................... 169           .         Components ........................................................ 192  .
NOISE, VIBRATION AND HARSHNESS (NVH)                                                  Removal and Installation ..................................... 192       .
TROUBLESHOOTING ........................................... 171             .           REMOVAL ........................................................ 192   .
 NVH Troubleshooting -- Engine Noise ............... 171                    .           INSPECTION AFTER REMOVAL .................... 192                      .
 Use the Chart Below to Help You Find the Cause                                         INSTALLATION ................................................ 193      .
 of the Symptom. .................................................. 172     .       FUEL INJECTOR AND FUEL TUBE ..................... 194                      .
ENGINE ROOM COVER ....................................... 173               .         Components ........................................................ 194  .
 Components ........................................................ 173    .         Removal and Installation ..................................... 194       .
 Removal and Installation ..................................... 173         .           REMOVAL ........................................................ 194   .
   REMOVAL ........................................................ 173     .           INSTALLATION ................................................ 196      .
   INSTALLATION ................................................ 173        .           INSPECTION AFTER INSTALLATION ............. 198                        .
DRIVE BELTS ........................................................ 174    .
 Components ........................................................ 174    .


Revision: 2006 December                                                       EM-3                                                         2006 FX35/FX45
ROCKER COVER .................................................. 200    .       ENGINE ASSEMBLY .............................................. 243        .
  Components ........................................................ 200
                                                                       .        Components ......................................................... 243 .
  Removal and Installation ..................................... 200   .        Removal and Installation ...................................... 243      .
    REMOVAL ........................................................ 200
                                                                       .          REMOVAL ......................................................... 243  .
    INSTALLATION ................................................. 202 .          INSTALLATION ................................................. 246     .
TIMING CHAIN ....................................................... 203
                                                                       .          INSPECTION AFTER INSTALLATION ............. 246                        .
  Components ........................................................ 203
                                                                       .       CYLINDER BLOCK ................................................ 248       .
  Removal and Installation ..................................... 204   .        Components ......................................................... 248 .
    REMOVAL ........................................................ 204
                                                                       .        Disassembly and Assembly ................................. 249           .
    INSPECTION AFTER REMOVAL ..................... 208                 .          DISASSEMBLY ................................................. 249      .
    INSTALLATION ................................................. 208 .          ASSEMBLY ....................................................... 253   .
    INSPECTION AFTER INSTALLATION ............. 214                    .        How to Select Piston and Bearing ....................... 258             .
CAMSHAFT ............................................................ 215
                                                                       .          DESCRIPTION ................................................. 258      .
  Components ........................................................ 215
                                                                       .          HOW TO SELECT PISTON .............................. 259                .
  Removal and Installation ..................................... 215   .          HOW TO SELECT CONNECTING ROD BEAR-
    REMOVAL ........................................................ 215
                                                                       .          ING .................................................................... 260
                                                                                                                                                         .
    INSPECTION AFTER REMOVAL ..................... 216                 .          HOW TO SELECT MAIN BEARING ................. 261                       .
    INSTALLATION ................................................. 219 .        Inspection After Disassembly ............................... 265         .
    INSPECTION AFTER INSTALLATION ............. 221                    .          CRANKSHAFT END PLAY ............................... 265                .
  Valve Clearance ................................................... 222
                                                                       .          CONNECTING ROD SIDE CLEARANCE ........ 265                             .
    INSPECTION .................................................... 222.          PISTON TO PISTON PIN OIL CLEARANCE .... 265                            .
    ADJUSTMENT ................................................. 224   .          PISTON RING SIDE CLEARANCE .................. 266                      .
OIL SEAL ............................................................... 228
                                                                       .          PISTON RING END GAP ................................. 266              .
  Removal and Installation of Valve Oil Seal .......... 228            .          CONNECTING ROD BEND AND TORSION .... 267                               .
    REMOVAL ........................................................ 228
                                                                       .          CONNECTING ROD BIG END DIAMETER ..... 267                              .
    INSTALLATION ................................................. 228 .          CONNECTING ROD BUSHING OIL CLEAR-
  Removal and Installation of Front Oil Seal .......... 229            .          ANCE ................................................................ 267
                                                                                                                                                         .
    REMOVAL ........................................................ 229
                                                                       .          CYLINDER BLOCK DISTORTION ................... 268                      .
    INSTALLATION ................................................. 229 .          MAIN BEARING HOUSING INNER DIAMETER.269
  Removal and Installation of Rear Oil Seal ........... 230            .          PISTON TO CYLINDER BORE CLEARANCE . 269
    REMOVAL ........................................................ 230
                                                                       .          CRANKSHAFT MAIN JOURNAL DIAMETER .. 270                                .
    INSTALLATION ................................................. 230 .          CRANKSHAFT PIN JOURNAL DIAMETER ..... 271                              .
CYLINDER HEAD .................................................. 232   .          CRANKSHAFT OUT-OF-ROUND AND TAPER.271
  On-Vehicle Service .............................................. 232.          CRANKSHAFT RUNOUT ................................. 271                .
    CHECKING COMPRESSION PRESSURE ...... 232                           .          CONNECTING ROD BEARING OIL CLEAR-
  Components ........................................................ 233
                                                                       .          ANCE ................................................................ 272
                                                                                                                                                         .
  Removal and Installation ..................................... 233   .          MAIN BEARING OIL CLEARANCE .................. 273                      .
    REMOVAL ........................................................ 233
                                                                       .          CRUSH HEIGHT OF MAIN BEARING ............. 274                         .
    INSPECTION AFTER REMOVAL ..................... 234                 .          CRUSH HEIGHT OF CONNECTING ROD
    INSTALLATION ................................................. 234 .          BEARING .......................................................... 274 .
  Disassembly and Assembly ................................. 236       .          DRIVE PLATE ................................................... 274    .
    COMPONENTS ................................................ 236    .       SERVICE DATA AND SPECIFICATIONS (SDS) ... 275                             .
    DISASSEMBLY ................................................ 236   .        Standard and Limit ............................................... 275   .
    ASSEMBLY ...................................................... 237.          GENERAL SPECIFICATIONS .......................... 275                  .
  Inspection After Disassembly .............................. 238      .          DRIVE BELTS ................................................... 275    .
    VALVE DIMENSIONS ....................................... 238       .          INTAKE MANIFOLD AND EXHAUST MANI-
    VALVE GUIDE CLEARANCE ........................... 239              .          FOLD ................................................................ 275
                                                                                                                                                         .
    VALVE GUIDE REPLACEMENT ...................... 239                 .          SPARK PLUG ................................................... 276     .
    VALVE SEAT CONTACT .................................. 241          .          CAMSHAFT AND CAMSHAFT BEARING ........ 276                             .
    VALVE SEAT REPLACEMENT ........................ 241                .          CYLINDER HEAD ............................................. 278        .
    VALVE SPRING SQUARENESS ...................... 242                 .          CYLINDER BLOCK ........................................... 281         .
    VALVE SPRING DIMENSIONS AND VALVE                                             PISTON, PISTON RING AND PISTON PIN ..... 282                           .
    SPRING PRESSURE LOAD ............................ 242              .          CONNECTING ROD ......................................... 283           .
                                                                                  CRANKSHAFT .................................................. 284      .
                                                                                  MAIN BEARING ................................................ 286      .
                                                                                  CONNECTING ROD BEARING ........................ 287                    .




Revision: 2006 December                                                   EM-4                                                        2006 FX35/FX45
                                             PRECAUTIONS
                                                                                                    [VQ35DE]
PRECAUTIONS
[VQ35DE]                                                               PFP:00001
                                                                                                                      A
Precautions Necessary for Steering Wheel Rotation After Battery Disconnect
                                                                                                           NBS003FN

NOTE:
q    This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI EM
     VEHICLE IMMOBILIZER SYSTEM - NATS).
q    Remove and install all control units after disconnecting both battery cables with the ignition knob in the
     LOCK position.                                                                                               C
q    Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
     work. If DTC is detected, perform trouble diagnosis according to self-diagnosis results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock D
mechanism 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.                                                                   E
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE                                                                                                   F
1.   Connect both battery cables.
     NOTE:
     Supply power using jumper cables if battery is discharged.                                                       G
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             H
     rotated.
4.   Perform the necessary repair operation.
5.   When the repair work is completed, return the ignition switch to the LOCK position before connecting             I
     the battery cables. (At this time, the steering lock mechanism will engage.)
6.   Perform a self-diagnosis check of all control units using CONSULT-II.
                                                                                                                      J
Precautions for Drain Engine Coolant and Engine Oil                                                        NBS003FO


Drain engine coolant and engine oil when the engine is cooled.
Precautions for Disconnecting Fuel Piping                                                                  NBS003FP   K
q    Before starting work, make sure no fire or spark producing items are in the work area.
q    Release fuel pressure before disconnecting and disassembly.                                                      L
q    After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and Disassembly                                                                    NBS003FQ

                                                                                                                      M
q    When instructed to use SST, use specified tools. Always be careful to work safely, avoid forceful or unin-
     structed operations.
q    Exercise maximum care to avoid damage to mating or sliding surfaces.
q    Dowel pins are used for several parts alignment. When replacing and reassembling parts with dowel pins,
     make sure that dowel pins are installed in the original position.
q    Cover openings of engine system with a tape or equivalent, if necessary, to seal out foreign materials.
q    Mark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.
q    When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally
     opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be
     used in the step.
Precautions for Inspection, Repair and Replacement                                                         NBS003FR


Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.




Revision: 2006 December                              EM-5                                       2006 FX35/FX45
                                                PRECAUTIONS
                                                                                                      [VQ35DE]
Precautions for Assembly and Installation                                                                     NBS003FS


q    Use torque wrench to tighten bolts or nuts to specification.
q    When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
     ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is speci-
     fied, do exactly as specified.
q    Replace with new gasket, packing, oil seal or O-ring.
q    Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for
     any restriction and blockage.
q    Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
     Before assembly, oil sliding surfaces well.
q    Release air within route when refilling after draining engine coolant.
q    After repairing, start the engine and increase engine speed to check engine coolant, fuel, engine oil, and
     exhaust gases for leakage.
Precautions for Angle Tightening                                                                              NBS003FT


q    Use the angle wrench [SST: KV10112100 (BT8653-A)] for the final tightening of the following engine parts:



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