Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Xterra 2000-2004 Approved Nissan Xterra 2001 EM
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ENGINE MECHANICAL GI
SECTION EM MA
LC
EC
CONTENTS FE
PRECAUTIONS ...............................................................4 Components...............................................................29
CL
Supplemental Restraint System (SRS) AIR Removal.....................................................................30
BAG and SEAT BELT PRE-TENSIONER...............4 Installation..................................................................31 MT
Parts Requiring Angular Tightening.............................4 Disassembly...............................................................31
Liquid Gasket Application Procedure ..........................4 Inspection...................................................................31
PREPARATION ...............................................................5 CYLINDER HEAD DISTORTION ...............................31 AT
Special Service Tools ..................................................5 CAMSHAFT VISUAL CHECK ....................................32
Commercial Service Tools ...........................................8 CAMSHAFT RUNOUT ..............................................32
CAMSHAFT CAM HEIGHT .......................................32 TF
CAMSHAFT JOURNAL CLEARANCE ........................32
KA24DE
CAMSHAFT END PLAY............................................33
NOISE, VIBRATION AND HARSHNESS (NVH) CAMSHAFT SPROCKET RUNOUT ...........................33 PD
TROUBLESHOOTING ...................................................10 VALVE GUIDE CLEARANCE ....................................33
NVH Troubleshooting Chart - Engine Noise .............11 VALVE GUIDE REPLACEMENT ................................34
VALVE SEATS .........................................................35 AX
OUTER COMPONENT PARTS .....................................12
REPLACING VALVE SEAT FOR SERVICE PARTS ....35
Removal and Installation ...........................................12
VALVE DIMENSIONS ...............................................36
MEASUREMENT OF COMPRESSION PRESSURE ....15 VALVE SPRING .......................................................37 SU
OIL PAN.........................................................................16 VALVE LIFTER AND VALVE SHIM ............................37
Components...............................................................16 Assembly ...................................................................38
Removal.....................................................................16 Valve Clearance.........................................................38
BR
Installation..................................................................17 CHECKING .............................................................38
TIMING CHAIN ..............................................................18 ADJUSTING ............................................................39
ST
Components...............................................................18 ENGINE ASSEMBLY.....................................................41
LIQUID GASKET APPLICATION PLACES..................19 Removal and Installation ...........................................41
Removal.....................................................................20 REMOVAL ...............................................................42 RS
UPPER TIMING CHAIN ............................................20 INSTALLATION........................................................43
IDLER SPROCKET ..................................................21 CYLINDER BLOCK .......................................................44
LOWER TIMING CHAIN ...........................................21 Components...............................................................44 BT
Inspection...................................................................22 Removal and Installation ...........................................45
Installation..................................................................23 Disassembly...............................................................45
LOWER TIMING CHAIN ...........................................23 PISTON AND CRANKSHAFT ....................................45 HA
IDLER SPROCKET ..................................................24 Inspection...................................................................45
UPPER TIMING CHAIN ............................................24 PISTON AND PISTON PIN CLEARANCE ..................45
OIL SEAL.......................................................................26 PISTON RING SIDE CLEARANCE ............................46
SC
Replacement..............................................................26 PISTON RING END GAP..........................................46
VALVE OIL SEAL .....................................................26 CONNECTING ROD BEND AND TORSION ...............46
OIL SEAL INSTALLING DIRECTION .........................26 CYLINDER BLOCK DISTORTION AND WEAR ...........47
EL
FRONT OIL SEAL ....................................................26 PISTON-TO-BORE CLEARANCE ..............................47
REAR OIL SEAL ......................................................27 CRANKSHAFT.........................................................48
CYLINDER HEAD..........................................................29
IDX
BEARING CLEARANCE ...........................................49
CONTENTS (Cont'd)
CONNECTING ROD BUSHING CLEARANCE Tension Adjustment....................................................79
(SMALL END) ..........................................................51 AFTER BELT REPLACEMENT..................................79
REPLACEMENT OF CONNECTING ROD AFTER ENGINE OVERHAUL OR ENGINE
BUSHING (SMALL END) ..........................................51 REASSEMBLY (WITH ROCKER COVERS
FLYWHEEL RUNOUT ..............................................52 REMOVED) .............................................................80
Assembly ...................................................................52 OIL SEAL.......................................................................82
PISTON ..................................................................52 Replacement..............................................................82
CRANKSHAFT.........................................................53 VALVE OIL SEAL .....................................................82
REPLACING PILOT BUSHING ..................................54 OIL SEAL INSTALLING DIRECTION .........................82
SERVICE DATA AND SPECIFICATIONS (SDS) .........55 CAMSHAFT OIL SEAL .............................................83
General Specifications...............................................55 FRONT OIL SEAL ....................................................83
COMPRESSION PRESSURE ...................................55 REAR OIL SEAL ......................................................83
Cylinder Head ............................................................55 CYLINDER HEAD..........................................................84
Valve ..........................................................................56 Components...............................................................84
VALVE ....................................................................56 Removal.....................................................................85
VALVE SPRING .......................................................56 Disassembly...............................................................87
VALVE GUIDE .........................................................57 Inspection...................................................................88
VALVE LIFTER ........................................................57 CYLINDER HEAD DISTORTION ...............................88
VALVE CLEARANCE ADJUSTMENT .........................57 CAMSHAFT VISUAL CHECK ....................................88
AVAILABLE SHIMS ..................................................58 CAMSHAFT RUNOUT ..............................................88
VALVE SEAT ...........................................................59 CAMSHAFT CAM HEIGHT .......................................88
Cylinder Block............................................................60 CAMSHAFT JOURNAL CLEARANCE ........................88
Camshaft and Camshaft Bearing ..............................61 CAMSHAFT END PLAY............................................89
Piston, Piston Ring and Piston Pin ...........................62 CAMSHAFT SPROCKET RUNOUT ...........................89
PISTON ..................................................................62 VALVE GUIDE CLEARANCE ....................................90
PISTON PIN ............................................................62 VALVE GUIDE REPLACEMENT ................................90
PISTON RING .........................................................62 VALVE SEATS .........................................................91
Connecting Rod .........................................................63 REPLACING VALVE SEAT FOR SERVICE PARTS ....92
Crankshaft..................................................................63 VALVE DIMENSIONS ...............................................92
Bearing Clearance .....................................................64 VALVE SPRING .......................................................93
Available Main Bearing..............................................64 ROCKER SHAFT AND ROCKER ARM ......................93
STANDARD .............................................................64 HYDRAULIC VALVE LIFTER ....................................94
UNDERSIZE (SERVICE) ..........................................64 Assembly ...................................................................94
Available Connecting Rod Bearing............................64 Installation..................................................................95
STANDARD .............................................................64 ENGINE ASSEMBLY.....................................................99
UNDERSIZE (SERVICE) ..........................................64 Removal and Installation ...........................................99
Miscellaneous Components.......................................65 REMOVAL .............................................................100
CYLINDER BLOCK .....................................................102
VG33E Components.............................................................102
Removal and Installation .........................................103
NOISE, VIBRATION AND HARSHNESS (NVH) Disassembly.............................................................103
TROUBLESHOOTING ...................................................66 PISTON AND CRANKSHAFT ..................................103
NVH Troubleshooting Chart - Engine Noise .............67 Inspection.................................................................104
OUTER COMPONENT PARTS .....................................68 PISTON AND PISTON PIN CLEARANCE ................104
Removal and Installation ...........................................68 PISTON RING SIDE CLEARANCE ..........................104
MEASUREMENT OF COMPRESSION PRESSURE ....70 PISTON RING END GAP........................................104
OIL PAN.........................................................................72 CONNECTING ROD BEND AND TORSION .............105
Removal.....................................................................72 CYLINDER BLOCK DISTORTION AND WEAR .........105
Installation..................................................................73 PISTON-TO-BORE CLEARANCE ............................106
CRANKSHAFT.......................................................107
TIMING BELT ................................................................75
BEARING CLEARANCE .........................................108
Components...............................................................75
CONNECTING ROD BUSHING CLEARANCE
Removal.....................................................................76 (SMALL END) ........................................................110
Inspection...................................................................77 REPLACEMENT OF CONNECTING ROD
BELT TENSIONER AND TENSIONER SPRING ..........78 BUSHING (SMALL END) ........................................110
Installation..................................................................78
EM-2
CONTENTS (Cont'd)
FLYWHEEL/DRIVE PLATE RUNOUT ...................... 111 Camshaft and Camshaft Bearing ............................119 GI
Assembly ................................................................. 111 Cylinder Block..........................................................120
PISTON ................................................................ 111 Piston, Piston Ring and Piston Pin .........................121
CRANKSHAFT....................................................... 111 AVAILABLE PISTON ..............................................121 MA
REPLACING PILOT BUSHING (M/T) OR PILOT PISTON RING .......................................................121
CONVERTER (A/T) ................................................113 PISTON PIN ..........................................................122
SERVICE DATA AND SPECIFICATIONS (SDS) .......114 Connecting Rod .......................................................122
General Specifications.............................................114 Crankshaft................................................................122
Cylinder Head ..........................................................115 Available Main Bearing............................................123
Valve ........................................................................115 NO. 1 MAIN BEARING ...........................................123
LC
VALVE ..................................................................115 NO. 2 AND 3 MAIN BEARING.................................123
VALVE SPRING .....................................................116 NO. 4 MAIN BEARING ...........................................123
HYDRAULIC VALVE LIFTER ..................................116
EC
UNDER SIZE .........................................................123
VALVE GUIDE .......................................................116 Available Connecting Rod Bearing..........................124
ROCKER SHAFT AND ROCKER ARM ....................116 CONNECTING ROD BEARING UNDERSIZE ...........124 FE
Valve Seat................................................................117 Miscellaneous Components.....................................124
INTAKE VALVE SEAT ............................................117 BEARING CLEARANCE .........................................124
EXHAUST VALVE SEAT.........................................118 CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
EM-3
PRECAUTIONS
Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
Supplemental Restraint System (SRS) "AIR
BAG" and "SEAT BELT PRE-TENSIONER" NGEM0081
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with
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
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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