Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Quest 2004-2009 Approved Nissan Quest 2004 EM
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B ENGINE
A
EM
SECTION
ENGINE MECHANICAL C
D
E
CONTENTS
PRECAUTIONS ......................................................... 4 . INTAKE MANIFOLD COLLECTOR ......................... 19 . F
Precautions for Supplemental Restraint System Removal and Installation ....................................... 19 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- REMOVAL .......................................................... 20 .
SIONER" ................................................................. 4
. INSPECTION AFTER REMOVAL ...................... 21 . G
Precautions for Drain Coolant ................................. 4 . INSTALLATION .................................................. 21 .
Precautions for Disconnecting Fuel Piping ............. 4 . EGR VOLUME CONTROL VALVE .......................... 23 .
Precautions for Removal and Disassembly ............ 4 . Removal and Installation ....................................... 23 .
H
Precautions for Inspection, Repair and Replace- REMOVAL .......................................................... 24 .
ment ........................................................................ 4
. INSTALLATION .................................................. 24 .
Precautions for Assembly and Installation .............. 4 . INTAKE MANIFOLD ................................................ 25 .
Parts Requiring Angular Tightening ........................ 5 . Removal and Installation ....................................... 25 . I
Precautions for Liquid Gasket ................................. 5 . REMOVAL .......................................................... 25 .
REMOVAL OF LIQUID GASKET SEALING ......... 5 . INSPECTION AFTER REMOVAL ...................... 26 .
LIQUID GASKET APPLICATION PROCEDURE 5 ..... INSTALLATION .................................................. 26 . J
PREPARATION .......................................................... 7 . EXHAUST MANIFOLD AND THREE WAY CATA-
Special Service Tools .............................................. 7 . LYST ......................................................................... 27
.
Commercial Service Tools ..................................... 10 . Removal and Installation ....................................... 27 .
K
NOISE, VIBRATION, AND HARSHNESS (NVH) REMOVAL .......................................................... 28 .
TROUBLESHOOTING ............................................. 12 . INSPECTION AFTER REMOVAL ...................... 29 .
NVH Troubleshooting -- Engine Noise ................. 12 . INSTALLATION .................................................. 29 .
Use the Chart Below to Help You Find the Cause OIL PAN AND OIL STRAINER ................................ 31 . L
of the Symptom. .................................................... 13 . Removal and Installation ....................................... 31 .
DRIVE BELTS .......................................................... 14. REMOVAL .......................................................... 31 .
Checking Drive Belts ............................................. 14 . INSPECTION AFTER REMOVAL ...................... 34 . M
Tension Adjustment ............................................... 14 . INSTALLATION .................................................. 34 .
GENERATOR AND AIR CONDITIONER COM- INSPECTION AFTER INSTALLATION ............... 36 .
PRESSOR BELT ................................................ 15 . IGNITION COIL ........................................................ 37 .
POWER STEERING OIL PUMP BELT .............. 16 . Removal and Installation ....................................... 37 .
Removal and Installation ....................................... 16 . REMOVAL .......................................................... 37 .
REMOVAL .......................................................... 16 . INSTALLATION .................................................. 38 .
INSTALLATION .................................................. 16 . SPARK PLUG (PLATINUM-TIPPED TYPE) ............ 39 .
AIR CLEANER AND AIR DUCT .............................. 17 . Removal and Installation ....................................... 39 .
Removal and Installation ....................................... 17 . REMOVAL .......................................................... 39 .
REMOVAL .......................................................... 17 . INSPECTION AFTER REMOVAL ...................... 40 .
INSTALLATION .................................................. 18 . INSTALLATION .................................................. 40 .
CHANGING AIR CLEANER FILTER .................. 18 . FUEL INJECTOR AND FUEL TUBE ....................... 41 .
Removal and Installation ....................................... 41 .
REMOVAL .......................................................... 41 .
INSTALLATION .................................................. 42 .
INSPECTION AFTER INSTALLATION ............... 43 .
Revision: January 2005 EM-1 2004 Quest
ROCKER COVER .................................................... 44 . ENGINE ASSEMBLY .............................................. 133 .
Removal and Installation ....................................... 44 . Removal and Installation ...................................... 133 .
REMOVAL .......................................................... 44
. REMOVAL ......................................................... 134 .
INSTALLATION ................................................... 45. INSTALLATION ................................................. 137 .
FRONT TIMING CHAIN CASE ................................ 47 . INSPECTION AFTER INSTALLATION ............. 138 .
Removal and Installation ....................................... 47 . CYLINDER BLOCK ................................................ 140 .
REMOVAL .......................................................... 48
. Disassembly and Assembly ................................. 140 .
INSTALLATION ................................................... 53. DISASSEMBLY ................................................. 141 .
TIMING CHAIN ......................................................... 58
. ASSEMBLY ....................................................... 145 .
Removal and Installation ....................................... 58 . How to Select Piston and Bearing ....................... 152 .
4 A/T MODEL ..................................................... 59
. DESCRIPTION ................................................. 152 .
5 A/T MODEL ..................................................... 79
. HOW TO SELECT A PISTON .......................... 152 .
CAMSHAFT ............................................................ 100
. HOW TO SELECT CONNECTING ROD BEAR-
Removal and Installation ..................................... 100 . INGS ................................................................. 153
.
REMOVAL ........................................................ 101
. HOW TO SELECT MAIN BEARINGS ............... 154 .
INSPECTION AFTER REMOVAL ..................... 102 . Inspection After Disassembly ............................... 157 .
INSTALLATION ................................................. 104 . CRANKSHAFT END PLAY ............................... 157 .
INSPECTION AFTER INSTALLATION ................ 108 . CONNECTING ROD SIDE CLEARANCE ........ 157 .
INSPECTION OF CAMSHAFT SPROCKET PISTON AND PISTON PIN CLEARANCE ........ 157 .
(INT) OIL GROOVE .......................................... 108 . PISTON RING SIDE CLEARANCE .................. 158 .
Valve Clearance ................................................... 109
. PISTON RING END GAP ................................. 158 .
CHECKING ....................................................... 109
. CONNECTING ROD BEND AND TORSION .... 159 .
VALVE ADJUSTING ......................................... 112 . CONNECTING ROD BEARING HOUSING
OIL SEAL ............................................................... 113
. DIAMETER (BIG END) ..................................... 159 .
Removal and Installation of Valve Oil Seal .......... 113 . CONNECTING ROD BUSHING OIL CLEAR-
REMOVAL ........................................................ 113
. ANCE (SMALL END) ........................................ 159 .
INSTALLATION ................................................. 113 . CYLINDER BLOCK DISTORTION ................... 160 .
Removal and Installation of Front Oil Seal .......... 113 . INNER DIAMETER OF MAIN BEARING HOUS-
REMOVAL ........................................................ 113
. ING .................................................................... 161
.
INSTALLATION ................................................. 115 . PISTON-TO-CYLINDER BORE CLEARANCE . 161
Removal and Installation of Rear Oil Seal ........... 116 . OUTER DIAMETER OF CRANKSHAFT JOUR-
REMOVAL ........................................................ 116
. NAL ................................................................... 163
.
INSTALLATION ................................................. 116 . OUTER DIAMETER OF CRANKSHAFT PIN ... 163 .
CYLINDER HEAD .................................................. 117 . OUT-OF-ROUND AND TAPER OF CRANK-
On-Vehicle Service .............................................. 117. SHAFT .............................................................. 163
.
CHECKING COMPRESSION PRESSURE ...... 117 . CRANKSHAFT RUNOUT ................................. 163 .
Removal and Installation ..................................... 118 . OIL CLEARANCE OF CONNECTING ROD
REMOVAL ........................................................ 118
. BEARING .......................................................... 163 .
INSPECTION AFTER REMOVAL ..................... 120 . OIL CLEARANCE OF MAIN BEARING ............ 164 .
INSTALLATION ................................................. 120 . CRUSH HEIGHT OF MAIN BEARING ............. 165 .
Disassembly and Assembly ................................. 126 . CRUSH HEIGHT OF CONNECTING ROD
DISASSEMBLY ................................................ 127 . BEARING .......................................................... 165 .
Inspection After Disassembly .............................. 128 . OUTER DIAMETER OF MAIN BEARING CAP
CYLINDER HEAD DISTORTION ..................... 128 . BOLTS .............................................................. 165
.
VALVE DIMENSIONS ....................................... 128 . OUTER DIAMETER OF CONNECTING ROD
VALVE GUIDE CLEARANCE ........................... 128 . BOLTS .............................................................. 166
.
VALVE GUIDE REPLACEMENT ...................... 129 . DRIVE PLATE ................................................... 166 .
VALVE SEAT CONTACT .................................. 130 . OIL JET ............................................................. 166
.
VALVE SEAT REPLACEMENT ........................ 130 . OIL JET RELIEF VALVE ................................... 166 .
VALVE SPRING SQUARENESS ...................... 131 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 167 .
VALVE SPRING DIMENSIONS AND VALVE Standard and Limit ............................................... 167 .
SPRING PRESSURE LOAD ............................ 131 . GENERAL SPECIFICATIONS .......................... 167 .
ASSEMBLY ...................................................... 131. DRIVE BELT ..................................................... 168 .
INTAKE MANIFOLD COLLECTOR, INTAKE
Revision: January 2005 EM-2 2004 Quest
MANIFOLD AND EXHAUST MANIFOLD ......... 168 .
SPARK PLUG ................................................... 168 . A
CYLINDER HEAD ............................................ 169 .
VALVE .............................................................. 169
.
CAMSHAFT AND CAMSHAFT BEARING ....... 172 . EM
CYLINDER BLOCK .......................................... 173 .
PISTON, PISTON RING AND PISTON PIN ..... 174 .
CONNECTING ROD ........................................ 175 .
CRANKSHAFT ................................................. 176 . C
AVAILABLE MAIN BEARING ........................... 177 .
CONNECTING ROD BEARING ....................... 177 .
BEARING CLEARANCE .................................. 178 . D
E
F
G
H
I
J
K
L
M
Revision: January 2005 EM-3 2004 Quest
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EBS00G4X
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
q To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Drain Coolant EBS00G4Y
q Drain coolant when engine is cooled.
Precautions for Disconnecting Fuel Piping EBS00G4Z
q Before starting work, make sure no fire or spark producing items are in the work area.
q Release fuel pressure before disassembly.
q After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and Disassembly EBS00G50
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.
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
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 EBS00G51
q Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way,
and replace if necessary.
Precautions for Assembly and Installation EBS00G52
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 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.
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
stopped). Then make sure that there are no leaks at fuel line connections.
Revision: January 2005 EM-4 2004 Quest
PRECAUTIONS
q After repairing, start engine and increase engine speed to check coolant, fuel, oil, and exhaust systems
for leakage. A
Parts Requiring Angular Tightening EBS00G53
q Use an angle wrench for the final tightening of the following engine parts: EM
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