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EM

Aug 22, 2014

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ENGINE

SECTION

ENGINE MECHANICAL

EM

A

EM

C

D

CONTENTSVQ40DE PRECAUTION .............................................. 4 .PRECAUTIONS .................................................. 4 .Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" .................................................................. 4 . Precaution Necessary for Steering Wheel Rotation After Battery Disconnect .................................... 4 . Precaution for Drain Engine Coolant ........................ 4 . Precaution for Disconnecting Fuel Piping ................ 5 . Precaution for Removal and Disassembly ............... 5 . Precaution for Inspection, Repair and Replacement ......................................................................... 5 . Precaution for Assembly and Installation ................. 5 . Parts Requiring Angle Tightening ............................ 5 . Precaution for Liquid Gasket .................................... 5 .

E

AIR CLEANER FILTER ..................................... 15Exploded View ........................................................15 . Removal and Installation ........................................15 .

F

SPARK PLUG ................................................... 16Exploded View ........................................................16 . Removal and Installation ........................................16 .

G

H

CAMSHAFT VALVE CLEARANCE .................. 18Valve Clearance .....................................................18 .

COMPRESSION PRESSURE ........................... 22Compression Pressure ...........................................22 .

I

ON-VEHICLE REPAIR ................................ 24 .ENGINE ROOM COVER ................................... 24Removal and Installation ........................................24 .

J

K

PREPARATION ........................................... 7 .PREPARATION .................................................. 7 .Special Service Tool ................................................ 7 . Commercial Service Tool ......................................... 9 .

AIR CLEANER AND AIR DUCT ....................... 25Exploded View ........................................................25 . Removal and Installation ........................................25 . L

INTAKE MANIFOLD COLLECTOR .................. 26Exploded View ........................................................26 . Removal and Installation ........................................26 . M

FUNCTION DIAGNOSIS ............................. 11 .NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING ...........................11 .NVH Troubleshooting - Engine Noise .................... 11 . Use the Chart Below to Help You Find the Cause of the Symptom ...................................................... 11 .

INTAKE MANIFOLD ......................................... 29Exploded View ........................................................29 . Removal and Installation ........................................29 . N

EXHAUST MANIFOLD AND THREE WAY CATALYST ........................................................ 31Exploded View ........................................................31 . Removal and Installation ........................................31 .

O

ON-VEHICLE MAINTENANCE ................... 13 .DRIVE BELTS ...................................................13 .Exploded View ....................................................... 13 . Checking Drive Belts .............................................. 13 . Adjustment ............................................................. 13 . Removal and Installation ........................................ 13 . Drive Belt Auto Tensioner and Idler Pulley ............ 14 .

OIL PAN AND OIL STRAINER ......................... 35Exploded View ........................................................35 . Removal and Installation ........................................35 .

P

IGNITION COIL ................................................. 40Exploded View ........................................................40 . Removal and Installation ........................................40 .2009 Pathfinder

Revision: October 2008

EM-1

ROCKER COVER ............................................. 41 .Exploded View ....................................................... 41 . Removal and Installation ....................................... 41 .

FUEL INJECTOR AND FUEL TUBE ................ 45 .Exploded View ....................................................... 45 . Removal and Installation ....................................... 45 .

FRONT TIMING CHAIN CASE ......................... 50 .Exploded View ....................................................... 50 . Removal and Installation ....................................... 51 .

TIMING CHAIN ................................................. 60 .Exploded View ....................................................... 60 . Removal and Installation ....................................... 61 .

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" .............................................................. 145 . Precaution Necessary for Steering Wheel Rotation After Battery Disconnect ............................... 145 . Precaution for Drain Engine Coolant ................... 145 . Precaution for Disconnecting Fuel Piping ............ 146 . Precaution for Removal and Disassembly ........... 146 . Precaution for Inspection, Repair and Replacement ..................................................................... 146 . Precaution for Assembly and Installation ............. 146 . Parts Requiring Angular Tightening ..................... 146 . Precaution for Liquid Gasket ................................ 146 .

PREPARATION ......................................... 148PREPARATION ............................................... 148 .Special Service Tool ............................................ 148 . Commercial Service Tool ..................................... 150 .

CAMSHAFT ...................................................... 80 .Exploded View ....................................................... 80 . Removal and Installation ....................................... 81 .

OIL SEAL .......................................................... 89 .Removal and Installation of Valve Oil Seal ............ 89 . Removal and Installation of Front Oil Seal ............ 89 . Removal and Installation of Rear Oil Seal ............. 90 .

FUNCTION DIAGNOSIS ........................... 152NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING .......................... 152 .NVH Troubleshooting - Engine Noise .................. 152 . Use the Chart Below to Help You Find the Cause of the Symptom .................................................... 153 .

CYLINDER HEAD ............................................. 92 .Exploded View ....................................................... 92 . Removal and Installation ....................................... 92 . Exploded View ....................................................... 96 . Disassembly and Assembly ................................... 96 . Inspection After Disassembly ................................ 98 .

ON-VEHICLE MAINTENANCE ................. 155DRIVE BELTS ................................................. 155 .Exploded View ..................................................... 155 . Checking Drive Belts ............................................ 155 . Adjustment ........................................................... 155 . Removal and Installation ...................................... 155 . Drive Belt Auto Tensioner and Idler Pulley .......... 156 .

REMOVAL AND INSTALLATION ............. 103 .ENGINE ASSEMBLY ...................................... 103 .Exploded View ......................................................103 . Removal and Installation ......................................103 .

DISASSEMBLY AND ASSEMBLY ........... 107 .ENGINE UNIT ................................................. 107 .Exploded View ......................................................107 . Disassembly and Assembly ..................................108 . Inspection After Disassembly ...............................118 . Dowel Pin Alignment ............................................127 .

AIR CLEANER FILTER ................................... 157 .Exploded View ..................................................... 157 . Removal and Installation ...................................... 157 .

SPARK PLUG .................................................. 158 .Exploded View ..................................................... 158 . Removal and Installation ...................................... 158 .

HOW TO SELECT PISTON AND BEARING .. 129 .How to Select Piston and Bearing ........................129 .

CAMSHAFT VALVE CLEARANCE ................ 160 .Valve Clearance ................................................... 160 .

SERVICE DATA AND SPECIFICATIONS (SDS) ......................................................... 134 .SERVICE DATA AND SPECIFICATIONS (SDS) ............................................................... 134 .Standard and Limit ...............................................134 .

COMPRESSION PRESSURE ......................... 165 .Compression Pressure ........................................ 165 .

ON-VEHICLE REPAIR .............................. 166ENGINE ROOM COVER ................................. 166 .Removal and Installation ...................................... 166 .

VK56DE PRECAUTION .