Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Quest 2004-2009 Approved Nissan Quest 2006 EM
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B ENGINE
A
EM
SECTION
ENGINE MECHANICAL C
D
E
CONTENTS
PRECAUTIONS ......................................................... 3 . EGR VOLUME CONTROL VALVE .......................... 21 . F
Precautions for Drain Coolant ................................. 3 . Removal and Installation ....................................... 21 .
Precautions for Disconnecting Fuel Piping ............. 3 . REMOVAL .......................................................... 22 .
Precautions for Removal and Disassembly ............ 3 . INSTALLATION .................................................. 22 . G
Precautions for Inspection, Repair and Replace- INTAKE MANIFOLD ................................................ 23 .
ment ........................................................................ 3
. Removal and Installation ....................................... 23 .
Precautions for Assembly and Installation .............. 3 . REMOVAL .......................................................... 23 .
H
Parts Requiring Angular Tightening ........................ 3 . INSPECTION AFTER REMOVAL ...................... 24 .
Precautions for Liquid Gasket ................................. 4 . INSTALLATION .................................................. 24 .
REMOVAL OF LIQUID GASKET SEALING ......... 4 . EXHAUST MANIFOLD AND THREE WAY CATA-
LIQUID GASKET APPLICATION PROCEDURE 4 ..... LYST ......................................................................... 25
. I
PREPARATION .......................................................... 5 . Removal and Installation ....................................... 25 .
Special Service Tools .............................................. 5 . REMOVAL .......................................................... 26 .
Commercial Service Tools ....................................... 8 . INSPECTION AFTER REMOVAL ...................... 27 . J
NOISE, VIBRATION, AND HARSHNESS (NVH) INSTALLATION .................................................. 27 .
TROUBLESHOOTING ............................................. 10 . OIL PAN AND OIL STRAINER ................................ 29 .
NVH Troubleshooting -- Engine Noise ................. 10 . Removal and Installation ....................................... 29 .
K
Use the Chart Below to Help You Find the Cause REMOVAL .......................................................... 29 .
of the Symptom. .....................................................11 . INSPECTION AFTER REMOVAL ...................... 32 .
DRIVE BELTS .......................................................... 12 . INSTALLATION .................................................. 32 .
Checking Drive Belts ............................................. 12 . INSPECTION AFTER INSTALLATION ............... 34 . L
Tension Adjustment ............................................... 12 . IGNITION COIL ........................................................ 35 .
GENERATOR AND AIR CONDITIONER COM- Removal and Installation ....................................... 35 .
PRESSOR BELT ................................................ 13 . REMOVAL .......................................................... 35 . M
POWER STEERING OIL PUMP BELT .............. 14 . INSTALLATION .................................................. 36 .
Removal and Installation ....................................... 14 . SPARK PLUG (PLATINUM-TIPPED TYPE) ............ 37 .
REMOVAL .......................................................... 14 . Removal and Installation ....................................... 37 .
INSTALLATION .................................................. 14 . REMOVAL .......................................................... 37 .
AIR CLEANER AND AIR DUCT .............................. 15 . INSPECTION AFTER REMOVAL ...................... 38 .
Removal and Installation ....................................... 15 . INSTALLATION .................................................. 38 .
REMOVAL .......................................................... 15 . FUEL INJECTOR AND FUEL TUBE ....................... 39 .
INSTALLATION .................................................. 16 . Removal and Installation ....................................... 39 .
CHANGING AIR CLEANER FILTER .................. 16 . REMOVAL .......................................................... 39 .
INTAKE MANIFOLD COLLECTOR ......................... 17 . INSTALLATION .................................................. 40 .
Removal and Installation ....................................... 17 . INSPECTION AFTER INSTALLATION ............... 41 .
REMOVAL .......................................................... 18 . ROCKER COVER .................................................... 42 .
INSPECTION AFTER REMOVAL ...................... 19 . Removal and Installation ....................................... 42 .
INSTALLATION .................................................. 19 . REMOVAL .......................................................... 42 .
INSTALLATION .................................................. 43 .
Revision: July 2006 EM-1 2006 Quest
FRONT TIMING CHAIN CASE ................................ 45 . ASSEMBLY ....................................................... 143 .
Removal and Installation ....................................... 45 . How to Select Piston and Bearing ....................... 149 .
REMOVAL .......................................................... 46
. DESCRIPTION ................................................. 149 .
INSTALLATION ................................................... 51. HOW TO SELECT A PISTON .......................... 150 .
TIMING CHAIN ......................................................... 56
. HOW TO SELECT CONNECTING ROD BEAR-
Removal and Installation ....................................... 56 . INGS ................................................................. 151
.
4 A/T MODEL ..................................................... 57
. HOW TO SELECT MAIN BEARINGS ............... 152 .
5 A/T MODEL ..................................................... 78
. Inspection After Disassembly ............................... 155 .
CAMSHAFT .............................................................. 97
. CRANKSHAFT END PLAY ............................... 155 .
Removal and Installation ....................................... 97 . CONNECTING ROD SIDE CLEARANCE ........ 155 .
REMOVAL .......................................................... 98
. PISTON AND PISTON PIN CLEARANCE ........ 155 .
INSPECTION AFTER REMOVAL ....................... 99 . PISTON RING SIDE CLEARANCE .................. 156 .
INSTALLATION ................................................. 101 . PISTON RING END GAP ................................. 156 .
Inspection After Installation .................................. 106 . CONNECTING ROD BEND AND TORSION .... 157 .
INSPECTION OF CAMSHAFT SPROCKET CONNECTING ROD BEARING HOUSING
(INT) OIL GROOVE .......................................... 106 . DIAMETER (BIG END) ..................................... 157 .
Valve Clearance ................................................... 106
. CONNECTING ROD BUSHING OIL CLEAR-
CHECKING ....................................................... 106
. ANCE (SMALL END) ........................................ 157 .
VALVE ADJUSTING ......................................... 109 . CYLINDER BLOCK DISTORTION ................... 158 .
INSPECTION AFTER INSTALLATION ............. 110 . INNER DIAMETER OF MAIN BEARING HOUS-
OIL SEAL ............................................................... 111
. ING .................................................................... 159
.
Removal and Installation of Valve Oil Seal ...........111 . PISTON-TO-CYLINDER BORE CLEARANCE . 159
REMOVAL .........................................................111
. OUTER DIAMETER OF CRANKSHAFT JOUR-
INSTALLATION ..................................................111 . NAL ................................................................... 161
.
Removal and Installation of Front Oil Seal ...........111 . OUTER DIAMETER OF CRANKSHAFT PIN ... 161 .
REMOVAL .........................................................111
. OUT-OF-ROUND AND TAPER OF CRANK-
INSTALLATION ................................................. 112 . SHAFT .............................................................. 161
.
Removal and Installation of Rear Oil Seal ........... 114 . CRANKSHAFT RUNOUT ................................. 161 .
REMOVAL ........................................................ 114
. OIL CLEARANCE OF CONNECTING ROD
INSTALLATION ................................................. 114 . BEARING .......................................................... 161 .
CYLINDER HEAD .................................................. 115 . OIL CLEARANCE OF MAIN BEARING ............ 162 .
On-Vehicle Service .............................................. 115. CRUSH HEIGHT OF MAIN BEARING ............. 163 .
CHECKING COMPRESSION PRESSURE ...... 115 . CRUSH HEIGHT OF CONNECTING ROD
Removal and Installation ..................................... 116 . BEARING .......................................................... 163 .
REMOVAL ........................................................ 116
. OUTER DIAMETER OF MAIN BEARING CAP
INSPECTION AFTER REMOVAL ..................... 118 . BOLTS .............................................................. 163
.
INSTALLATION ................................................. 118 . OUTER DIAMETER OF CONNECTING ROD
Disassembly and Assembly ................................. 124 . BOLTS .............................................................. 164
.
DISASSEMBLY ................................................ 125 . DRIVE PLATE ................................................... 164 .
Inspection After Disassembly .............................. 126 . OIL JET ............................................................. 164
.
CYLINDER HEAD DISTORTION ..................... 126 . OIL JET RELIEF VALVE ................................... 164 .
VALVE DIMENSIONS ....................................... 126 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 165 .
VALVE GUIDE CLEARANCE ........................... 126 . Standard and Limit ............................................... 165 .
VALVE GUIDE REPLACEMENT ...................... 127 . GENERAL SPECIFICATIONS .......................... 165 .
VALVE SEAT CONTACT .................................. 128 . DRIVE BELT ..................................................... 166 .
VALVE SEAT REPLACEMENT ........................ 128 . INTAKE MANIFOLD COLLECTOR, INTAKE
VALVE SPRING SQUARENESS ...................... 129 . MANIFOLD AND EXHAUST MANIFOLD ......... 166 .
VALVE SPRING DIMENSIONS AND VALVE SPARK PLUG ................................................... 167 .
SPRING PRESSURE LOAD ............................ 129 . CYLINDER HEAD ............................................. 167 .
ASSEMBLY ...................................................... 129. VALVE ............................................................... 167
.
ENGINE ASSEMBLY ............................................. 131 . CAMSHAFT AND CAMSHAFT BEARING ........ 171 .
Removal and Installation ..................................... 131 . CYLINDER BLOCK ........................................... 171 .
REMOVAL ........................................................ 132
. PISTON, PISTON RING AND PISTON PIN ..... 172 .
INSTALLATION ................................................. 135 . CONNECTING ROD ......................................... 173 .
INSPECTION AFTER INSTALLATION ............. 136 . CRANKSHAFT .................................................. 174 .
CYLINDER BLOCK ................................................ 138 . AVAILABLE MAIN BEARING ............................ 175 .
Disassembly and Assembly ................................. 138 . CONNECTING ROD BEARING ........................ 175 .
DISASSEMBLY ................................................ 139 . BEARING CLEARANCE ................................... 176 .
Revision: July 2006 EM-2 2006 Quest
PRECAUTIONS
PRECAUTIONS PFP:00001
A
Precautions for Drain Coolant EBS00PR4
q Drain coolant when engine is cooled.
EM
Precautions for Disconnecting Fuel Piping EBS00PR5
q Before starting work, make sure no fire or spark producing items are in the work area.
q Release fuel pressure before disassembly. C
q After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and Disassembly EBS00PR6
D
q When instructed to use special service tools, use the specified tools. Always be careful to work safely,
avoid forceful or uninstructed operations.
q Exercise maximum care to avoid damage to mating or sliding surfaces. E
q Cover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials.
q Mark and arrange disassembly parts in an organized way for easy troubleshooting and assembly.
q When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally F
opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be
used where noted in the step.
Precautions for Inspection, Repair and Replacement EBS00PR7 G
q Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way,
and replace if necessary.
H
Precautions for Assembly and Installation EBS00PR8
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 I
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. J
q Thoroughly wash, clean, and air-blow each part. Carefully check oil or coolant passages for any restriction
and blockage.
q Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust. K
Before assembly, oil sliding surfaces well.
q Release air within route after draining coolant.
q Before starting engine, apply fuel pressure to fuel lines with turning ignition switch ON (with engine L
stopped). Then make sure that there are no leaks at fuel line connections.
q After repairing, start engine and increase engine speed to check coolant, fuel, oil, and exhaust systems
for leakage. M
Parts Requiring Angular Tightening EBS00PR9
q Use an angle wrench for the final tightening of the following engine parts:
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