Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti M45 M35 Y50 2006-2007 Approved M45_M35-Y50-2006 em
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ENGINE MECHANICAL
B ENGINE
A
SECTION
ENGINE MECHANICAL
EM EM
C
D
E
CONTENTS
VQ35DE AIR CLEANER AND AIR DUCT .............................. 17 . F
Components .......................................................... 17
.
PRECAUTIONS ......................................................... 5 . Removal and Installation ....................................... 17
.
Precautions for Procedures without Cowl Top Cover 5 ..... REMOVAL .......................................................... 17
. G
Precautions Necessary for Steering Wheel Rotation INSTALLATION .................................................. 17
.
After Battery Disconnect ......................................... 5 . Changing Air Cleaner Filter ................................... 18.
OPERATION PROCEDURE ................................ 5 . REMOVAL .......................................................... 18
.
Precautions for Drain Engine Coolant and Engine H
INSTALLATION .................................................. 18
.
Oil ............................................................................ 5
. INTAKE MANIFOLD COLLECTOR ......................... 19 .
Precautions for Disconnecting Fuel Piping ............. 5 . Components .......................................................... 19
.
Precautions for Removal and Disassembly ............ 5 . Removal and Installation ....................................... 19
. I
Precautions for Inspection, Repair and Replace- REMOVAL .......................................................... 19
.
ment ........................................................................ 6
. INSPECTION AFTER REMOVAL ...................... 21 .
Precautions for Assembly and Installation .............. 6 . INSTALLATION .................................................. 22
. J
Precautions for Angle Tightening ............................ 6 . INTAKE MANIFOLD ................................................ 24 .
Precautions for Liquid Gasket ................................. 6 . Components .......................................................... 24
.
REMOVAL OF LIQUID GASKET SEALING ......... 6 . Removal and Installation ....................................... 24
.
LIQUID GASKET APPLICATION PROCEDURE 7 ..... K
REMOVAL .......................................................... 24
.
PREPARATION .......................................................... 8 . INSPECTION AFTER REMOVAL ...................... 25 .
Special Service Tools .............................................. 8 . INSTALLATION .................................................. 25
.
Commercial Service Tools ..................................... 10 . EXHAUST MANIFOLD ............................................ 26 . L
NOISE, VIBRATION AND HARSHNESS (NVH) Components .......................................................... 26
.
TROUBLESHOOTING ............................................. 12 . Removal and Installation ....................................... 26
.
NVH Troubleshooting -- Engine Noise ................. 12 . REMOVAL .......................................................... 26
. M
Use the Chart Below to Help You Find the Cause INSPECTION AFTER REMOVAL ...................... 27 .
of the Symptom. .................................................... 13 . INSTALLATION .................................................. 27
.
ENGINE ROOM COVER ......................................... 14 . OIL PAN AND OIL STRAINER ................................ 29 .
Components .......................................................... 14 . Components (2WD Models) .................................. 29 .
Removal and Installation ....................................... 14 . Removal and Installation (2WD Models) ............... 29 .
REMOVAL .......................................................... 14 . REMOVAL .......................................................... 29
.
INSTALLATION .................................................. 14 . INSPECTION AFTER REMOVAL ...................... 31 .
DRIVE BELTS .......................................................... 15 . INSTALLATION .................................................. 31
.
Checking Drive Belts ............................................. 15 . INSPECTION AFTER INSTALLATION ............... 34 .
Tension Adjustment ............................................... 15 . Components (AWD Models) .................................. 35 .
ALTERNATOR AND POWER STEERING OIL Removal and Installation (AWD Models) ............... 36 .
PUMP BELT ....................................................... 16 . REMOVAL .......................................................... 36
.
A/C COMPRESSOR BELT ................................ 16 . INSPECTION AFTER REMOVAL ...................... 38 .
Removal and Installation ....................................... 16 . INSTALLATION .................................................. 38
.
REMOVAL .......................................................... 16 . INSPECTION AFTER INSTALLATION ............... 41 .
INSTALLATION .................................................. 16 .
Revision: 2006 January EM-1 2006 M35/M45
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
. COMPONENTS ................................................ 106 .
Removal and Installation ....................................... 43 . DISASSEMBLY ................................................. 106 .
REMOVAL .......................................................... 43
. ASSEMBLY ....................................................... 107 .
INSPECTION AFTER REMOVAL ....................... 43 . Inspection after Disassembly ............................... 108 .
INSTALLATION ................................................... 44 . VALVE DIMENSIONS ....................................... 108 .
FUEL INJECTOR AND FUEL TUBE ....................... 45 . VALVE GUIDE CLEARANCE ........................... 108 .
Components .......................................................... 45
. VALVE GUIDE REPLACEMENT ...................... 109 .
Removal and Installation ....................................... 45 . VALVE SEAT CONTACT ................................... 110 .
REMOVAL .......................................................... 45
. VALVE SEAT REPLACEMENT ......................... 110 .
INSTALLATION ................................................... 47 . VALVE SPRING SQUARENESS ...................... 111 .
INSPECTION AFTER INSTALLATION ............... 50 . VALVE SPRING DIMENSIONS AND VALVE
ROCKER COVER .................................................... 51 . SPRING PRESSURE LOAD ............................. 112 .
Components .......................................................... 51
. ENGINE ASSEMBLY .............................................. 113 .
Removal and Installation ....................................... 51 . Components (2WD Models) ................................. 113 .
REMOVAL .......................................................... 51
. Removal and Installation (2WD Models) .............. 113 .
INSTALLATION ................................................... 52 . REMOVAL ......................................................... 114 .
FRONT TIMING CHAIN CASE ................................ 54 . INSTALLATION ................................................. 116 .
Removal and Installation ....................................... 54 . INSPECTION AFTER INSTALLATION ............. 117 .
REMOVAL .......................................................... 54
. Components (AWD Models) ................................ 118 .
INSTALLATION ................................................... 58 . Removal and Installation (AWD Models) ............. 118 .
INSPECTION AFTER INSTALLATION ............... 63 . REMOVAL ......................................................... 119 .
TIMING CHAIN ......................................................... 64
. INSTALLATION ................................................. 121 .
Components .......................................................... 64
. INSPECTION AFTER INSTALLATION ............. 122 .
Removal and Installation ....................................... 65 . CYLINDER BLOCK ................................................ 123 .
REMOVAL .......................................................... 65
. Components ......................................................... 123 .
INSPECTION AFTER REMOVAL ....................... 72 . Disassembly and Assembly ................................. 124 .
INSTALLATION ................................................... 72 . DISASSEMBLY ................................................. 124 .
INSPECTION AFTER INSTALLATION ............... 82 . ASSEMBLY ....................................................... 128 .
CAMSHAFT .............................................................. 84
. How to Select Piston and Bearing ....................... 135 .
Components .......................................................... 84
. DESCRIPTION ................................................. 135 .
Removal and Installation ....................................... 85 . HOW TO SELECT PISTON .............................. 135 .
REMOVAL .......................................................... 85
. HOW TO SELECT CONNECTING ROD BEAR-
INSPECTION AFTER REMOVAL ....................... 86 . ING .................................................................... 136
.
INSTALLATION ................................................... 89 . HOW TO SELECT MAIN BEARING ................. 137 .
INSPECTION AFTER INSTALLATION ............... 92 . Inspection after Disassembly ............................... 140 .
Valve Clearance ..................................................... 93
. CRANKSHAFT END PLAY ............................... 140 .
INSPECTION ...................................................... 93. CONNECTING ROD SIDE CLEARANCE ........ 140 .
ADJUSTMENT ................................................... 96 . PISTON TO PISTON PIN OIL CLEARANCE .... 140 .
OIL SEAL ................................................................. 98
. PISTON RING SIDE CLEARANCE .................. 141 .
Removal and Installation of Valve Oil Seal ............ 98 . PISTON RING END GAP ................................. 141 .
REMOVAL .......................................................... 98
. CONNECTING ROD BEND AND TORSION .... 142 .
INSTALLATION ................................................... 98 . CONNECTING ROD BIG END DIAMETER ..... 142 .
Removal and Installation of Front Oil Seal ............ 99 . CONNECTING ROD BUSHING OIL CLEAR-
REMOVAL .......................................................... 99
. ANCE ................................................................ 142
.
INSTALLATION ................................................... 99 . CYLINDER BLOCK DISTORTION ................... 143 .
Removal and Installation of Rear Oil Seal ............. 99 . MAIN BEARING HOUSING INNER DIAMETER.144
REMOVAL .......................................................... 99
. PISTON TO CYLINDER BORE CLEARANCE . 144
INSTALLATION ................................................. 100 . CRANKSHAFT MAIN JOURNAL DIAMETER .. 145 .
CYLINDER HEAD .................................................. 101 . CRANKSHAFT PIN JOURNAL DIAMETER ..... 146 .
On-Vehicle Service .............................................. 101. CRANKSHAFT OUT-OF-ROUND AND TAPER.146
CHECKING COMPRESSION PRESSURE ...... 101 . CRANKSHAFT RUNOUT ................................. 146 .
Components ........................................................ 102
. CONNECTING ROD BEARING OIL CLEAR-
Revision: 2006 January EM-2 2006 M35/M45
ANCE ............................................................... 146
. DRIVE BELTS ........................................................ 174 .
MAIN BEARING OIL CLEARANCE ................. 147 . Components ........................................................ 174 . A
MAIN BEARING CRUSH HEIGHT ................... 148 . Checking Drive Belts ........................................... 174 .
CONNECTING ROD BEARING CRUSH Tension Adjustment ............................................. 174 .
HEIGHT ............................................................ 148
. Removal and Installation ..................................... 174 . EM
MAIN BEARING CAP BOLT OUTER DIAMETER 148 . REMOVAL ........................................................ 174 .
CONNECTING ROD BOLT OUTER DIAMETER 149 . INSTALLATION ................................................ 175 .
DRIVE PLATE .................................................. 149 . Components ........................................................ 176 .
OIL JET ............................................................ 149
. Drive Belt Auto Tensioner and Idler Pulley .......... 176 . C
OIL JET RELIEF VALVE .................................. 149 . REMOVAL ........................................................ 176 .
SERVICE DATA AND SPECIFICATIONS (SDS) ... 150 . INSTALLATION ................................................ 176 .
Standard and Limit .............................................. 150. AIR CLEANER AND AIR DUCT ............................ 177 . D
GENERAL SPECIFICATIONS ......................... 150 . Components ........................................................ 177 .
DRIVE BELT .................................................... 151. Removal and Installation ..................................... 177 .
INTAKE MANIFOLD COLLECTOR, INTAKE REMOVAL ........................................................ 177 . E
MANIFOLD AND EXHAUST MANIFOLD ........ 151 . INSPECTION AFTER REMOVAL .................... 178 .
SPARK PLUG .................................................. 151 . INSTALLATION ................................................ 178 .
CAMSHAFT AND CAMSHAFT BEARING ....... 152 . Changing Air Cleaner Filter ................................. 178 .
CYLINDER HEAD ............................................ 154 . REMOVAL ........................................................ 178 . F
CYLINDER BLOCK .......................................... 157 . INSTALLATION ................................................ 178 .
PISTON, PISTON RING AND PISTON PIN ..... 158 . INTAKE MANIFOLD .............................................. 179 .
CONNECTING ROD ........................................ 159 . Components ........................................................ 179 . G
CRANKSHAFT ................................................. 160 . Removal and Installation ..................................... 180 .
MAIN BEARING ............................................... 161 . REMOVAL ........................................................ 180 .
CONNECTING ROD BEARING ....................... 162 . INSPECTION AFTER REMOVAL .................... 182 . H
INSTALLATION ................................................ 182 .
VK45DE INSPECTION AFTER INSTALLATION ............. 182 .
EXHAUST MANIFOLD AND THREE WAY CATA-
PRECAUTIONS ..................................................... 163 . I
LYST ....................................................................... 183
.
Precautions for Procedures without Cowl Top Cover 163 . Components ........................................................ 183 .
Precautions Necessary for Steering Wheel Rotation Removal and Installation ..................................... 183 .
After Battery Disconnect ..................................... 163 . REMOVAL ........................................................ 183 . J
OPERATION PROCEDURE ............................ 163 . INSPECTION AFTER REMOVAL .................... 185 .
Precautions for Drain Engine Coolant and Engine INSTALLATION ................................................ 185 .
Oil ........................................................................ 163
. OIL PAN AND OIL STRAINER .............................. 187 . K
Precautions for Disconnecting Fuel Piping ......... 163 . Components ........................................................ 187 .
Precautions for Removal and Disassembly ........ 163 . Removal and Installation ..................................... 187 .
Precautions for Inspection, Repair and Replace- REMOVAL ........................................................ 187 . L
ment .................................................................... 164
. INSPECTION AFTER REMOVAL .................... 188 .
Precautions for Assembly and Installation .......... 164 . INSTALLATION ................................................ 188 .
Parts Requiring Angle Tightening ........................ 164 . INSPECTION AFTER INSTALLATION ............. 189 .
Precautions for Liquid Gasket ............................. 164 . IGNITION COIL ...................................................... 190 . M
REMOVAL OF LIQUID GASKET SEALING ..... 164 . Components ........................................................ 190 .
LIQUID GASKET APPLICATION PROCEDURE 165 . Removal and Installation ..................................... 190 .
PREPARATION ...................................................... 166 . REMOVAL ........................................................ 190 .
Special Service Tools .......................................... 166 . INSTALLATION ................................................ 190 .
Commercial Service Tools ................................... 169 . SPARK PLUG (PLATINUM-TIPPED TYPE) .......... 191 .
NOISE, VIBRATION AND HARSHNESS (NVH) Components ........................................................ 191 .
TROUBLESHOOTING ........................................... 171 . Removal and Installation ..................................... 191 .
NVH Troubleshooting -- Engine Noise ............... 171 . REMOVAL ........................................................ 191 .
Use the Chart Below to Help You Find the Cause INSPECTION AFTER REMOVAL .................... 191 .
of the Symptom. .................................................. 172 . INSTALLATION ................................................ 192 .
ENGINE ROOM COVER ....................................... 173 . FUEL INJECTOR AND FUEL TUBE ..................... 193 .
Components ........................................................ 173 . Components ........................................................ 193 .
Removal and Installation ..................................... 173 . Removal and Installation ..................................... 193 .
REMOVAL ........................................................ 173 . REMOVAL ........................................................ 193 .
INSTALLATION ................................................ 173 . INSTALLATION ................................................ 195 .
INSPECTION AFTER INSTALLATION ............. 197 .
Revision: 2006 January EM-3 2006 M35/M45
ROCKER COVER .................................................. 199 . ENGINE ASSEMBLY .............................................. 244 .
Components ........................................................ 199
. Components ......................................................... 244 .
Removal and Installation ..................................... 199 . Removal and Installation ...................................... 244 .
REMOVAL ........................................................ 199
. REMOVAL ......................................................... 245 .
INSTALLATION ................................................. 201 . INSTALLATION ................................................. 247 .
TIMING CHAIN ....................................................... 203
. INSPECTION AFTER INSTALLATION ............. 247 .
Components ........................................................ 203
. CYLINDER BLOCK ................................................ 249 .
Removal and Installation ..................................... 204 . Components ......................................................... 249 .
REMOVAL ........................................................ 204
. Disassembly and Assembly ................................. 250 .
INSPECTION AFTER REMOVAL ..................... 208 . DISASSEMBLY ................................................. 250 .
INSTALLATION ................................................. 208 . ASSEMBLY ....................................................... 254 .
INSPECTION AFTER INSTALLATION ............. 214 . How to Select Piston and Bearing ....................... 259 .
CAMSHAFT ............................................................ 215
. DESCRIPTION ................................................. 259 .
Components ........................................................ 215
. HOW TO SELECT PISTON .............................. 260 .
Removal and Installation ..................................... 215 . HOW TO SELECT CONNECTING ROD BEAR-
REMOVAL ........................................................ 215
. ING .................................................................... 261
.
INSPECTION AFTER REMOVAL ..................... 216 . HOW TO SELECT MAIN BEARING ................. 262 .
INSTALLATION ................................................. 219 . Inspection after Disassembly ............................... 266 .
INSPECTION AFTER INSTALLATION ............. 221 . CRANKSHAFT END PLAY ............................... 266 .
INSPECTION AFTER INSTALLATION ............. 222 . CONNECTING ROD SIDE CLEARANCE ........ 266 .
Valve Clearance ................................................... 222
. PISTON TO PISTON PIN OIL CLEARANCE .... 266 .
INSPECTION .................................................... 222. PISTON RING SIDE CLEARANCE .................. 267 .
ADJUSTMENT ................................................. 225 . PISTON RING END GAP ................................. 267 .
OIL SEAL ............................................................... 229
. CONNECTING ROD BEND AND TORSION .... 268 .
Removal and Installation of Valve Oil Seal .......... 229 . CONNECTING ROD BIG END DIAMETER ..... 268 .
REMOVAL ........................................................ 229
. CONNECTING ROD BUSHING OIL CLEAR-
INSTALLATION ................................................. 229 . ANCE ................................................................ 268
.
Removal and Installation of Front Oil Seal .......... 230 . CYLINDER BLOCK DISTORTION ................... 269 .
REMOVAL ........................................................ 230
. MAIN BEARING HOUSING INNER DIAMETER.270
INSTALLATION ................................................. 230 . PISTON TO CYLINDER BORE CLEARANCE . 270
Removal and Installation of Rear Oil Seal ........... 231 . CRANKSHAFT MAIN JOURNAL DIAMETER .. 271 .
REMOVAL ........................................................ 231
. CRANKSHAFT PIN JOURNAL DIAMETER ..... 272 .
INSTALLATION ................................................. 231 . CRANKSHAFT OUT-OF-ROUND AND TAPER.272
CYLINDER HEAD .................................................. 233 . CRANKSHAFT RUNOUT ................................. 272 .
On-Vehicle Service .............................................. 233. CONNECTING ROD BEARING OIL CLEAR-
CHECKING COMPRESSION PRESSURE ...... 233 . ANCE ................................................................ 273
.
Components ........................................................ 234
. MAIN BEARING OIL CLEARANCE .................. 274 .
Removal and Installation ..................................... 234 . CRUSH HEIGHT OF MAIN BEARING ............. 275 .
REMOVAL ........................................................ 234
. CRUSH HEIGHT OF CONNECTING ROD
INSPECTION AFTER REMOVAL ..................... 235 . BEARING .......................................................... 275 .
INSTALLATION ................................................. 235 . DRIVE PLATE ................................................... 275 .
Disassembly and Assembly ................................. 237 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 276 .
COMPONENTS ................................................ 237 . Standard and Limit ............................................... 276 .
DISASSEMBLY ................................................ 237 . GENERAL SPECIFICATIONS .......................... 276 .
ASSEMBLY ...................................................... 238. DRIVE BELTS ................................................... 276 .
Inspection after Disassembly ............................... 239 . INTAKE MANIFOLD AND EXHAUST MANI-
VALVE DIMENSIONS ....................................... 239 . FOLD ................................................................ 276
.
VALVE GUIDE CLEARANCE ........................... 240 . SPARK PLUG ................................................... 277 .
VALVE GUIDE REPLACEMENT ...................... 240 . CAMSHAFT AND CAMSHAFT BEARING ........ 277 .
VALVE SEAT CONTACT .................................. 242 . CYLINDER HEAD ............................................. 279 .
VALVE SEAT REPLACEMENT ........................ 242 . CYLINDER BLOCK ........................................... 282 .
VALVE SPRING SQUARENESS ...................... 243 . PISTON, PISTON RING AND PISTON PIN ..... 283 .
VALVE SPRING DIMENSIONS AND VALVE CONNECTING ROD ......................................... 284 .
SPRING PRESSURE LOAD ............................ 243 . CRANKSHAFT .................................................. 285 .
MAIN BEARING ................................................ 287 .
CONNECTING ROD BEARING ........................ 288 .
Revision: 2006 January EM-4 2006 M35/M45
PRECAUTIONS
[VQ35DE]
PRECAUTIONS
[VQ35DE] PFP:00001
A
Precautions for Procedures without Cowl Top Cover NBS004MF
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc. EM
C
D
PIIB3706J
E
Precautions Necessary for Steering Wheel Rotation After Battery Disconnect
NBS005RR
NOTE:
q This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI F
VEHICLE IMMOBILIZER SYSTEM - NATS).
q Remove and install all control units after disconnecting both battery cables with the ignition knob in the
LOCK position. G
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-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock H
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.
I
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE J
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged. K
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 L
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the LOCK position before connecting M
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.
Precautions for Drain Engine Coolant and Engine Oil NBS004MH
Drain engine coolant and engine oil when the engine is cooled.
Precautions for Disconnecting Fuel Piping NBS004MI
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.
q After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and Disassembly NBS004MJ
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.
Revision: 2006 January EM-5 2006 M35/M45
PRECAUTIONS
[VQ35DE]
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 NBS004MK
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precautions for Assembly and Installation NBS004ML
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 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 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 NBS004MM
q Use the angle wrench [SST: KV10112100 (BT8653-A)] for the final tightening of the following engine parts:
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