Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Quest 1999-2002 Approved Nissan Quest 2002 EM
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ENGINE MECHANICAL GI
SECTION EM MA
LC
EC
CONTENTS FE
PRECAUTIONS ...............................................................3 Inspection...................................................................31
AT
Supplemental Restraint System (SRS) AIR CYLINDER HEAD DISTORTION ...............................31
BAG and SEAT BELT PRE-TENSIONER...............3 CAMSHAFT VISUAL CHECK ....................................32 AX
Parts Requiring Angular Tightening.............................3 CAMSHAFT RUNOUT ..............................................32
Liquid Gasket Application Procedure ..........................3 CAMSHAFT CAM HEIGHT .......................................32
CAMSHAFT JOURNAL CLEARANCE ........................32 SU
PREPARATION ...............................................................4
CAMSHAFT END PLAY............................................33
Special Service Tools ..................................................4
CAMSHAFT SPROCKET RUNOUT ...........................33
Commercial Service Tools ...........................................6
VALVE GUIDE CLEARANCE ....................................33 BR
NOISE, VIBRATION AND HARSHNESS (NVH) VALVE GUIDE REPLACEMENT ................................34
TROUBLESHOOTING .....................................................8 VALVE SEATS .........................................................35
NVH Troubleshooting Chart - Engine Noise ...............9 REPLACING VALVE SEAT FOR SERVICE PARTS ....36 ST
OUTER COMPONENT PARTS .....................................10 VALVE DIMENSIONS ...............................................36
Removal and Installation ...........................................10 VALVE SPRING .......................................................37
MEASUREMENT OF COMPRESSION PRESSURE ....13 ROCKER SHAFT AND ROCKER ARM ......................37 RS
OIL PAN.........................................................................14 HYDRAULIC VALVE LIFTER ....................................38
Removal.....................................................................14 Assembly ...................................................................38
Installation..................................................................16 Installation..................................................................39 BT
TIMING BELT ................................................................17 ENGINE ASSEMBLY.....................................................43
Components...............................................................17 Removal and Installation ...........................................43
ENGINE MOUNTING ...............................................44 HA
Removal.....................................................................18
Inspection...................................................................20 CYLINDER BLOCK .......................................................47
BELT TENSIONER AND TENSIONER SPRING ..........20 Components...............................................................47
SC
Installation..................................................................21 Removal and Installation ...........................................48
Tension Adjustment....................................................22 Disassembly...............................................................48
AFTER BELT REPLACEMENT..................................22 PISTON AND CRANKSHAFT ....................................48 EL
AFTER ENGINE OVERHAUL OR ENGINE Inspection...................................................................49
REASSEMBLY (WITH ROCKER COVERS PISTON AND PISTON PIN CLEARANCE ..................49
REMOVED) .............................................................23 PISTON RING SIDE CLEARANCE ............................49 IDX
OIL SEAL.......................................................................25 PISTON RING END GAP..........................................49
Replacement..............................................................25 CONNECTING ROD BEND AND TORSION ...............50
VALVE OIL SEAL .....................................................25 CYLINDER BLOCK DISTORTION AND WEAR ...........50
OIL SEAL INSTALLING DIRECTION .........................25 PISTON-TO-BORE CLEARANCE ..............................51
CAMSHAFT OIL SEAL .............................................26 CRANKSHAFT.........................................................52
FRONT OIL SEAL ....................................................26 BEARING CLEARANCE ...........................................53
REAR OIL SEAL ......................................................26 CONNECTING ROD BUSHING CLEARANCE
CYLINDER HEAD..........................................................27 (SMALL END) ..........................................................55
REPLACEMENT OF CONNECTING ROD
Components...............................................................27
BUSHING (SMALL END) ..........................................55
Removal.....................................................................28
Assembly ...................................................................56
Disassembly...............................................................30
PISTON ..................................................................56
CONTENTS (Cont'd)
CRANKSHAFT.........................................................56 Piston, Piston Ring and Piston Pin ...........................66
REPLACING PILOT CONVERTER ............................58 AVAILABLE PISTON ................................................66
SERVICE DATA AND SPECIFICATIONS (SDS) .........59 PISTON RING .........................................................66
General Specifications...............................................59 PISTON PIN ............................................................67
Cylinder Head ............................................................60 Connecting Rod .........................................................67
Valve ..........................................................................60 Crankshaft..................................................................67
VALVE ....................................................................60 Available Main Bearing..............................................68
VALVE SPRING .......................................................61 NO. 1 MAIN BEARING .............................................68
HYDRAULIC VALVE LIFTER ....................................61 NO. 2 AND 3 MAIN BEARING ..................................68
VALVE GUIDE .........................................................61 NO. 4 MAIN BEARING .............................................68
ROCKER SHAFT AND ROCKER ARM ......................61 UNDER SIZE ...........................................................68
Valve Seat..................................................................62 Available Connecting Rod Bearing............................69
INTAKE VALVE SEAT ..............................................62 CONNECTING ROD BEARING UNDERSIZE .............69
EXHAUST VALVE SEAT...........................................63 Miscellaneous Components.......................................69
Camshaft and Camshaft Bearing ..............................64 BEARING CLEARANCE ...........................................69
Cylinder Block............................................................65
EM-2
PRECAUTIONS
Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
Supplemental Restraint System (SRS) "AIR
BAG" and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER" used along with
NDEM0041
GI
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The Supplemental Restraint System consists of driver air bag module (located in the center of the MA
steering wheel), front passenger air bag module (located on the instrument panel on passenger side), seat
belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness, and spiral cable.
Information necessary to service the system safely is included in the RS section of this Service Manual.
WARNING:
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