Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Xterra 2005-2007.2009 Approved Nissan Xterra 2007 EM
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B ENGINE
A
SECTION
ENGINE MECHANICAL
EM EM
C
D
E
CONTENTS
PRECAUTIONS ......................................................... 4 . INSTALLATION .................................................. 16 . F
Precautions for Supplemental Restraint System Changing Air Cleaner Filter ................................... 16 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- REMOVAL .......................................................... 16 .
SIONER" ................................................................. 4
. INSTALLATION .................................................. 16 . G
Precautions for Drain Engine Coolant ..................... 4 . INTAKE MANIFOLD COLLECTOR ......................... 17 .
Precautions for Disconnecting Fuel Piping ............. 4 . Removal and Installation ....................................... 17 .
Precautions for Removal and Disassembly ............ 4 . REMOVAL .......................................................... 18 .
H
Precautions for Inspection, Repair and Replace- INSTALLATION .................................................. 19 .
ment ........................................................................ 4
. INTAKE MANIFOLD ................................................ 20 .
Precautions for Assembly and Installation .............. 4 . Removal and Installation ....................................... 20 .
Parts Requiring Angle Tightening ............................ 5 . REMOVAL .......................................................... 20 . I
Precautions for Liquid Gasket ................................. 5 . INSPECTION AFTER REMOVAL ...................... 20 .
REMOVAL OF LIQUID GASKET SEALING ......... 5 . INSTALLATION .................................................. 21 .
LIQUID GASKET APPLICATION PROCEDURE 5 ..... EXHAUST MANIFOLD AND THREE WAY CATA- J
PREPARATION .......................................................... 7 . LYST ......................................................................... 22
.
Special Service Tools .............................................. 7 . Removal and Installation ....................................... 22 .
Commercial Service Tools ....................................... 9 . REMOVAL (LEFT BANK) ................................... 22 .
K
NOISE, VIBRATION AND HARSHNESS (NVH) INSPECTION AFTER REMOVAL ...................... 23 .
TROUBLESHOOTING ..............................................11 . INSTALLATION (LEFT BANK) ........................... 24 .
NVH Troubleshooting --Engine Noise ...................11 . REMOVAL (RIGHT BANK) ................................. 25 .
Use the Chart Below to Help You Find the Cause INSPECTION AFTER REMOVAL ...................... 25 . L
of the Symptom ..................................................... 12 . INSTALLATION (RIGHT BANK) ......................... 26 .
ENGINE ROOM COVER ......................................... 13 . OIL PAN AND OIL STRAINER ................................ 27 .
Removal and Installation ....................................... 13 . Removal and Installation ....................................... 27 . M
REMOVAL .......................................................... 13 . REMOVAL (LOWER) .......................................... 27 .
INSTALLATION .................................................. 13 . INSPECTION AFTER REMOVAL ...................... 28 .
DRIVE BELTS .......................................................... 14. INSTALLATION (LOWER) .................................. 28 .
Checking Drive Belts ............................................. 14 . INSPECTION AFTER INSTALLATION ............... 29 .
Tension Adjustment ............................................... 14 . REMOVAL (UPPER) .......................................... 29 .
Removal and Installation ....................................... 14 . INSPECTION AFTER REMOVAL ...................... 30 .
DRIVE BELT ...................................................... 14 . INSTALLATION (UPPER) ................................... 30 .
INSTALLATION .................................................. 15 . INSPECTION AFTER INSTALLATION ............... 31 .
Drive Belt Auto Tensioner and Idler Pulley ............ 15 . IGNITION COIL ........................................................ 32 .
REMOVAL .......................................................... 15 . Removal and Installation ....................................... 32 .
INSTALLATION .................................................. 15 . REMOVAL (LEFT BANK) ................................... 32 .
AIR CLEANER AND AIR DUCT .............................. 16 . INSTALLATION (LEFT BANK) ........................... 32 .
Removal and Installation ....................................... 16 . REMOVAL (RIGHT BANK) ................................. 32 .
REMOVAL .......................................................... 16 . INSTALLATION (RIGHT BANK) ......................... 32 .
INSPECTION AFTER REMOVAL ...................... 16 .
Revision: September 2006 EM-1 2007 Xterra
SPARK PLUG .......................................................... 33
. ASSEMBLY .........................................................98 .
Changing Spark Plugs ........................................... 33 . Inspection After Disassembly .................................99 .
REMOVAL .......................................................... 33
. VALVE DIMENSIONS .........................................99 .
INSPECTION AFTER REMOVAL ....................... 33 . VALVE GUIDE CLEARANCE .............................99 .
INSTALLATION ................................................... 34. VALVE GUIDE REPLACEMENT ...................... 100 .
FUEL INJECTOR AND FUEL TUBE ....................... 35 . VALVE SEAT CONTACT ................................... 101 .
Removal and Installation ....................................... 35 . VALVE SEAT REPLACEMENT ......................... 101 .
REMOVAL .......................................................... 35
. VALVE SPRING SQUARENESS ...................... 102 .
INSTALLATION ................................................... 38. VALVE SPRING DIMENSIONS AND VALVE
INSPECTION AFTER INSTALLATION ............... 40 . SPRING PRESSURE LOAD ............................. 103 .
ROCKER COVER .................................................... 41 . ENGINE ASSEMBLY .............................................. 104 .
Removal and Installation ....................................... 41 . Removal and Installation ...................................... 104 .
REMOVAL (LEFT BANK) ................................... 41 . REMOVAL ......................................................... 105 .
INSTALLATION (LEFT BANK) ............................ 42 . INSTALLATION ................................................. 106 .
REMOVAL (RIGHT BANK) ................................. 43 . INSPECTION AFTER INSTALLATION ............. 106 .
INSTALLATION (RIGHT BANK) ......................... 44 . CYLINDER BLOCK ................................................ 107 .
FRONT TIMING CHAIN CASE ................................ 46 . Disassembly and Assembly ................................. 107 .
Removal and Installation ....................................... 46 . DISASSEMBLY ................................................. 108 .
REMOVAL .......................................................... 46
. ASSEMBLY ....................................................... 112 .
INSTALLATION ................................................... 50. How to Select Piston and Bearing ....................... 118 .
INSPECTION AFTER INSTALLATION ............... 53 . DESCRIPTION ................................................. 118 .
TIMING CHAIN ......................................................... 55
. HOW TO SELECT PISTON .............................. 118 .
Removal and Installation ....................................... 55 . HOW TO SELECT CONNECTING ROD BEAR-
REMOVAL .......................................................... 56
. ING .................................................................... 119
.
INSPECTION AFTER REMOVAL ....................... 63 . HOW TO SELECT MAIN BEARING ................. 120 .
INSTALLATION ................................................... 64. Inspection After Disassembly ............................... 123 .
INSPECTION AFTER INSTALLATION ............... 74 . CRANKSHAFT END PLAY ............................... 123 .
CAMSHAFT .............................................................. 75
. CONNECTING ROD SIDE CLEARANCE ........ 123 .
Removal and Installation ....................................... 75 . PISTON TO PISTON PIN OIL CLEARANCE .... 123 .
REMOVAL .......................................................... 76
. PISTON RING SIDE CLEARANCE .................. 124 .
INSPECTION AFTER REMOVAL ....................... 77 . PISTON RING END GAP ................................. 124 .
INSTALLATION ................................................... 80. CONNECTING ROD BEND AND TORSION .... 125 .
INSPECTION AFTER INSTALLATION ............... 83 . CONNECTING ROD BIG END DIAMETER ..... 125 .
Valve Clearance ..................................................... 84
. CONNECTING ROD BUSHING OIL CLEAR-
INSPECTION ...................................................... 84
. ANCE ................................................................ 125
.
ADJUSTMENT ................................................... 87 . CYLINDER BLOCK DISTORTION ................... 126 .
OIL SEAL ................................................................. 89
. MAIN BEARING HOUSING INNER DIAMETER.127
Removal and Installation of Valve Oil Seal ............ 89 . PISTON TO CYLINDER BORE CLEARANCE . 127
REMOVAL .......................................................... 89
. CRANKSHAFT MAIN JOURNAL DIAMETER .. 128 .
INSTALLATION ................................................... 89. CRANKSHAFT PIN JOURNAL DIAMETER ..... 129 .
Removal and Installation of Front Oil Seal ............ 90 . CRANKSHAFT OUT-OF-ROUND AND TAPER.129
REMOVAL .......................................................... 90
. CRANKSHAFT RUNOUT ................................. 129 .
INSTALLATION ................................................... 90. CONNECTING ROD BEARING OIL CLEAR-
Removal and Installation of Rear Oil Seal ............. 91 . ANCE ................................................................ 129
.
REMOVAL .......................................................... 91
. MAIN BEARING OIL CLEARANCE .................. 130 .
INSTALLATION ................................................... 91. CRUSH HEIGHT OF MAIN BEARING ............. 131 .
CYLINDER HEAD .................................................... 92 . CRUSH HEIGHT OF CONNECTING ROD
On-Vehicle Service ................................................ 92
. BEARING .......................................................... 131 .
CHECKING COMPRESSION PRESSURE ........ 92 . LOWER CYLINDER BLOCK BOLT OUTER
Removal and Installation ....................................... 93 . DIAMETER ....................................................... 131 .
REMOVAL .......................................................... 93
. CONNECTING ROD BOLT OUTER DIAMETER.132
INSPECTION AFTER REMOVAL ....................... 94 . FLYWHEEL RUNOUT (M/T) ............................. 132 .
INSTALLATION ................................................... 95. MOVEMENT AMOUNT OF FLYWHEEL (M/T
INSPECTION AFTER INSTALLATION ............... 96 . MODELS) .......................................................... 132 .
Disassembly and Assembly ................................... 97 . DRIVE PLATE ................................................... 133 .
DISASSEMBLY .................................................. 97 . OIL JET ............................................................. 133
.
OIL JET RELIEF VALVE ................................... 133 .
Revision: September 2006 EM-2 2007 Xterra
SERVICE DATA AND SPECIFICATIONS (SDS) ... 134 . MANIFOLD AND EXHAUST MANIFOLD ......... 135 .
Standard and Limit .............................................. 134
. SPARK PLUG ................................................... 135
. A
GENERAL SPECIFICATIONS ......................... 134 . CAMSHAFT AND CAMSHAFT BEARING ....... 136 .
DRIVE BELT .................................................... 135
. CYLINDER HEAD ............................................ 138
.
INTAKE MANIFOLD COLLECTOR, INTAKE CYLINDER BLOCK .......................................... 141. EM
PISTON, PISTON RING AND PISTON PIN ..... 142 .
CONNECTING ROD ........................................ 143 .
CRANKSHAFT ................................................. 144
.
MAIN BEARING ............................................... 145
. C
CONNECTING ROD BEARING ....................... 146 .
D
E
F
G
H
I
J
K
L
M
Revision: September 2006 EM-3 2007 Xterra
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EBS00YQU
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. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
G 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.
G 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.
G 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 Engine Coolant EBS00YQV
Drain engine coolant when engine is cooled.
Precautions for Disconnecting Fuel Piping EBS00YQW
G Before starting work, make sure no fire or spark producing items are in the work area.
G Release fuel pressure before disconnecting and disassembly.
G After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and Disassembly EBS00YQX
G When instructed to use SST, use specified tools. Always be careful to work safely, avoid forceful or unin-
structed operations.
G Exercise maximum care to avoid damage to mating or sliding surfaces.
G Cover openings of engine system with tape or equivalent, if necessary, to seal out foreign materials.
G Mark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.
G 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 in the step.
Precautions for Inspection, Repair and Replacement EBS00YQY
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precautions for Assembly and Installation EBS00YQZ
G Use torque wrench to tighten bolts or nuts to specification.
G 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.
G Replace with new gasket, packing, oil seal or O-ring.
G Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for
any restriction and blockage.
G Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.
G Release air within route when refilling after draining engine coolant.
Revision: September 2006 EM-4 2007 Xterra
PRECAUTIONS
G After repairing, start engine and increase engine speed to check engine coolant, fuel, engine oil, and
exhaust gasses for leakage. A
Parts Requiring Angle Tightening EBS00YR0
G For the final tightening of the following engine parts use Tool: EM
Tool number : KV10112100 (BT-8653-A)
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