Nissan Murano 2003 User Manual

ENGINE MECHANICAL

B ENGINE

SECTION EM

CONTENTS

PRECAUTIONS .......................................................... 3

Precautions for Drain Engine Coolant ...................... 3

Precautions for Disconnecting Fuel Piping .............. 3

Precautions for Removal and Disassembly ............. 3

Precautions for Inspection, Repair and Replace-

ment ......................................................................... 3

Precautions for Assembly and Installation ............... 3

Parts Requiring Angular Tightening ......................... 3

Precautions for Liquid Gasket .................................. 4

REMOVAL OF LIQUID GASKET SEALING .......... 4

LIQUID GASKET APPLICATION PROCEDURE ..... 4

PREPARATION ..................................... ...................... 5

Special Service Tools ............................................... 5

Commercial Service Tools ........................................ 7

NOISE, VIBRATION AND HARSHNESS (NVH)

TROUBLESHOOTING ................... ............................. 9

NVH Troubleshooting —Engine Noise ..................... 9

Use the Chart Below to Help You Find the Cause

of the Symptom. ....................................... ....... ....... 10

DRIVE BELTS ............................................................11

Checking Drive Belts ...............................................11

Tension Adjustment .................................................11

AL TERNATOR AND AIR CONDITIONER COM-

PRESSOR BELT ................................................. 12

POWER STEERING OIL PUMP BELT ............... 12

Removal and Installation ........................................ 12

REMOVAL ........................................................... 12

INSTALLATION ................................................... 13

AIR CLEANER AND AIR DUCT ............................... 14

Removal and Installation ........................................ 14

REMOVAL ........................................................... 14

INSTALLATION ................................................... 15

CHANGING AIR CLEANER FILTER ................... 15

INTAKE MANIFOLD COLLECTOR .......................... 16

Removal and Installation ........................................ 16

REMOVAL ........................................................... 17

INSPECTION AFTER REMOVAL ....................... 18

INSTALLATION ................................................... 18

ENGINE MECHANICAL

INTAKE MANIFOLD .................................................20

Removal and Installation ........................................ 20

REMOVAL ...........................................................20

INSPECTION AFTER REMOVAL ....................... 20

INSTALLATION ................................................... 21

EXHAUST MANIFOLD AND THREE WAY CATA-

LYST ........... .......................... ................................. .... 22

Removal and Installation ........................................ 22

REMOVAL ...........................................................22

INSPECTION AFTER REMOVAL ....................... 24

INSTALLATION ................................................... 24

OIL PAN AND OIL STRAINER ................................. 26

Removal and Installation ........................................ 26

REMOVAL ...........................................................26

INSPECTION AFTER REMOVAL ....................... 31

INSTALLATION ................................................... 31

INSPECTION AFTER INSTALLATION ................34

IGNITION COIL .............................................. ....... .... 35

Removal and Installation ........................................ 35

REMOVAL ...........................................................35

INSTALLATION ................................................... 35

SPARK PLUG (PLATINUM-TIPPED TYPE) .............36

Removal and Installation ........................................ 36

REMOVAL ...........................................................36

INSPECTION AFTER REMOVAL ....................... 36

INSTALLATION ................................................... 37

FUEL INJECTOR AND FUEL TUBE ........................ 38

Removal and Installation ........................................ 38

REMOVAL ...........................................................38

INSTALLATION ................................................... 40

INSPECTION AFTER INSTALLATION ................42

ROCKER COVER .....................................................43

Removal and Installation ........................................ 43

REMOVAL ...........................................................43

INSTALLATION ................................................... 44

FRONT TIMING CHAIN CASE ................................. 46

Removal and Installation ........................................ 46

REMOVAL ...........................................................46

INSTALLATION ................................................... 48

Revision; 2004 April 2003 Murano

EM-1

TIMING CHAIN .......................................................... 54

Removal and Installation ........................................54

REMOVAL ........................................................... 55

INSPECTION AFTER REMOVAL ........................60

INSTALLATION ...................................... ..............60

INSPECTION AFTER INSTALLATION ................69

CAMSHAFT .............................. ...... ....... ....................70

Removal and Installation ........................................70

REMOVAL ........................................................... 71

INSPECTION AFTER REMOVAL ........................72

INSTALLATION ...................................... ..............74

Valve Clearance ......................................................77

INSPECTION ............................ ............. .............. 77

ADJUSTMENT .................................................... 79

OIL SEAL ..................................................................81

Removal and Installation of Valve Oil Seal .............81

REMOVAL ........................................................... 81

INSTALLATION ...................................... ..............81

Removal and Installation of Front Oil Seal .............82

REMOVAL ........................................................... 82

INSTALLATION ...................................... ..............83

Removal and Installation of Rear Oil Seal ..............83

REMOVAL ........................................................... 83

INSTALLATION ...................................... ..............83

CYLINDER HEAD ..................................................... 84

On-Vehicle Service .................................................84

CHECKING COMPRESSION PRESSURE .........84

Removal and Installation ........................................85

REMOVAL ........................................................... 85

INSPECTION AFTER REMOVAL ........................86

INSTALLATION ...................................... ..............86

Disassembly and Assembly ....................................88

DISASSEMBLY ................................................... 88

Inspection After Disassembly .................................89

CYLINDER HEAD DISTORTION ........................89

VALVE DIMENSIONS ............................ ....... .......89

VALVE GUIDE CLEARANCE ....................... .......89

VALVE GUIDE REPLACEMENT .................. .......90

VALVE SEAT CONTACT ....................... ....... .......91

VALVE SEAT REPLACE ME NT ...........................92

VALVE SPRING SQUARENESS .........................93

VALVE SPRING DIMENSIONS AND VALVE

SPRING PRESSURE LOAD ........... ....................93

ASSEMBLY ......................................................... 93

ENGINE ASSEMBLY ................................................95

Removal and Installation ........................................95

REMOVAL ........................................................... 96

INSTALLATION ...................................... ..............99

INSPECTION AFTER INSTALLATION ................99

CYLINDER BLOCK .................................................100

Disassembly and Assembly ..................................100

DISASSEMBLY .................................................101

ASSEMBLY .......................................................104

How to Select Piston and Bearing ........................110

DESCRIPTION ..................................................110

HOW TO SELECT PISTON ...............................110

HOW TO SELECT CONNECTING ROD BEAR-

ING ..................................................................... 111

HOW TO SELECT MAIN BEARING ..................112

Inspection After Disassembly ................................115

CRANKSHAFT SIDE CLEARANCE ..................115

CONNECTING ROD SIDE CLEARANCE .........115

PISTON AND PISTON PIN CLEARANCE .........115

PISTON RING SIDE CLEARANCE ...................116

PISTON RING END GAP ..................................116

CONNECTING ROD BEND AND TORSION .....116

CONNECTING ROD BEARING HOUSING

DIAMETER (BIG END) ......................................117

CONNECTING ROD BUSHING OIL CLEAR-

ANCE (SMALL END) .........................................117

CYLINDER BLOCK DISTORTION ....................118

INNER DIAMETER OF MAIN BEARING HOUS-

ING .....................................................................118

PISTON TO CYLINDER BORE CLEARANCE ..119 OUTER DIAMETER OF CRANKSHAFT JOUR-

NAL ........................... .........................................120

OUTER DIAMETER OF CRANKSHAFT PIN ....120

OUT-OF-ROUND AND TAPER OF CRANK-

SHAFT ...............................................................120

CRANKSHAFT RUNOUT ..................................121

OIL CLEARANCE OF CONNECTING ROD

BEARING ........................ ...................................121

OIL CLEARANCE OF MAIN BEARING .............122

CRUSH HEIGHT OF MAIN BEARING ..............122

CRUSH HEIGHT OF CONNECTING ROD

BEARING ........................ ...................................122

OUTER DIAMETER OF MAIN BEARING CAP

BOLT ..................................................................123

OUTER DIAMETER OF CONNECTING ROD

BOLT ..................................................................123

SIGNAL PLATE ..................................................123

OIL JET ..............................................................123

OIL JET RELIEF VALVE ....................................123

SERVICE DATA AND SPECIFICATIONS (SDS) ....124

Standard and Limit ................................................124

GENERAL SPECIFICATIONS ...........................124

INTAKE MANIFOLD COLLECTOR, INTAKE

MANIFOLD AND EXHAUST MANIFOLD ..........124

DRIVE BELT ......................................................125

SPARK PLUG ....................................................125

CYLINDER HEAD ........................ ....... ...... ....... ..125

VALVE .................................... ............................126

CAMSHAFT AND CAMSHAFT BEARING ....... ..130

CYLINDER BLOCK ................ ...... ....... ...... ....... ..130

PISTON, PISTON RING AND PISTON PIN ......131

CONNECTING ROD ..........................................132

CRANKSHAFT ................ ....... ...... ....... ...... ....... ..133

AVAILABLE MAIN BEARING .............................134

CONNECTING ROD BEARING .......... ...... ....... ..134

BEARING CLEARANCE ....................................135

Tightening Torque .................................................135

Revision; 2004 April 2003 Murano

EM-2

PRECAUTIONS

PRECAUTIONS PFP:00001

Precautions for Drain Engine Coolant ABS004RJ

Drain engine coolant when engine is cooled.

Precautions for Disconnecting Fuel Piping ABS004RK

● Before starting work, make sure no fire or spark producing items are in the work area.

● Release fuel press ure befo re di sa ss em bly.

● After disconnecting pipes, plug openings to stop fuel leakage.

Precautions for Removal and Disassembly ABS004RL

● When instructed t o use special service tool s, use the specified tools. Al ways be careful to work safe ly,

avoid forceful or uninstructed operations.

● Exercise maximum care to avoid damage to mating or sliding surfaces.

● Cover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials.

● Mark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.

● When looseni ng nu t s an d b ol t s, a s a b as ic ru le , st a r t wit h the on e fu rt he st o ut si de , the n th e on e d iag on al ly

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 ABS004RM

Before repairing or repla cing, thorou ghly inspect parts. In spect new repl acement parts in the s ame way, and replace if necessary.

Precautions for Assembly an d Installation ABS004RN

● Use torque wrench to tighten bolts or nuts to specification.

● 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 specified, do exactly as spe ci fie d.

● Replace with new gasket, packing, oil seal or O-ring.

● Thoroughly wa sh, c lean , an d air- bl ow eac h p art. Care ful ly ch eck en gin e oil o r en gine coolan t p ass ages for

any restriction and blockage.

● Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.

Before assembly, oil sliding surfaces well.

● Release air within route when refilling after draining engine coolant.

● After repairing, start engine and increase engine speed to check engine coolant, fuel, engine oil, and

exhaust system s for leakage.

Parts Requiring Angular Tighte ning ABS004RO

● Use an angle wrench for the final tighte ning of the following engine parts:

– Cylinder head bolts – Main bearing cap bolts – Connecting rod cap nuts – Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angular

tightening)

● Do not use a torque value for final tigh ten in g.

● The torque value for these parts are for a preliminary s tep.

● Ensure thread and seat surfaces are clean and coated with engine oil.

Revision; 2004 April 2003 Murano

EM-3

PRECAUTIONS

Precautions for Liquid Gasket ABS004RP

REMOVAL OF LIQUID GASKET SEALING

● After removing the mounting bolts and nuts, separate the mating

surface using a seal cutter and remove the old liquid gasket sealing.

CAUTION:

Be careful not to damage the mating surfaces.

● In areas where the cutter is difficult to use, use a plastic hammer

to lightly tap the areas where the liquid gasket is applied.

CAUTION:

If for some unavoidable reason a tool such as a flat-bladed screwdriver is used, be careful not to damage the mating surfaces.

LIQUID GASKET APPLICATION PROCEDURE

1. Using a scraper, remove the old liquid gasket adhering to the gasket application surface and the mating surface.

● Remove the liqu id gasket completely from the gro ove of the

gasket application surface, mounting bolts, and bolt holes.

2. Wipe the liquid gasket application surface and the mating surface with white gasoline (lighting and heating use) to remove adhering moisture, grease and foreign materials.

3. Attach the liquid gask et tub e to the tube pres s er.

Use Genuine RTV silicone sealant or equivalent. Refer to

GI-46, " SEALANTS" .

RECOMMENDED CHEMICAL PRODUCTS AND

PBIC0002E

PBIC0003E

4. Apply the liquid gasket without breaks to the specified location with the specified dimensions.

● If there is a groove for the liquid ga sket ap plicati on, ap ply the

liquid gasket to the groove.

● As for the bolt holes, normally apply the liquid gasket inside

the holes. Occasionally, it should be applied outside the holes. Make sure to read the text of this manual.

● Within five minutes of gasket application, install the mating

component.

● If the liquid gasket protrudes, wipe it off immediately.

● Do not retighten after the installation.

● After 30 minu te s o r mo re h ave passed from the installation, fill

the engine oil and engine coolant.

CAUTION:

If there are specific ins tructions in this manual, obs erve them.

EMA0622D

SEM159F

Revision; 2004 April 2003 Murano

EM-4

PREPARATION

PREPARATION PFP:00002

Special Service Tools ABS00325

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number (Kent-Moore No.) Tool name

Description

ST0501S000 (—) Engine stand assembly

1. ST05011000 (—) Engine stand

2. ST05012000 (—) Base

KV10106500 (—) Engine stand shaft

KV10117000 (J41262) Engine sub-attachment

KV10117001 (—) Engine sub-attachment

NT042

NT028

NT373

Disassembling and assembli ng

KV10117000 has been replaced with KV10117001 (KV10117000 is no longer in production, but it is usable).

Installing on the cylinder block

ST10120000 (J24239-01) Cylinder head bolt wrench

KV10116200 (J26336-B) Valve spring compressor

1. KV10115900 (J26336-20) Attachment

2. KV10109230 (—) Adapter

NT372

NT583

PBIC1650E

Loosening and tightening cylinder head bo lt

a: 13 (0.51) dia. b: 12 (0.47) c: 10 (0.39)

Unit: mm (in)

Disassembling valve mechani sm

Revision; 2004 April 2003 Murano

EM-5

Tool number (Kent-Moore No.) Tool name

PREPARATION

Description

KV10107902 (J38959) Valve oil seal puller

1. KV10116100 Valve oil seal puller adapter

(J39386) Valve oil seal drift

EM03470000 (J8037) Piston ring compressor

ST16610001 (J23907) Pilot bushing puller

Removing valve oil seal

S-NT605

Installing valve oil seal

NT024

Installing piston assembly into cylinder bore

NT044

Removing crankshaft pilot bushing

KV10111100 (J37228) Seal cutter

WS39930000 (—) Tube presser

KV10112100 (BT8653-A) Angle wrench

NT045

Removing steel oil pan and rear timing chain case

NT046

Pressing the tube of liquid gasket

NT052

Tightening bolts for bearing cap, cylinder head, etc. in angle

NT014

Revision; 2004 April 2003 Murano

EM-6

PREPARATION

Tool number (Kent-Moore No.) Tool name

KV10117100 (J3647-A) Heated oxygen sensor wrench

KV10117200 (J38365) Heated oxygen sensor wrench

— (J-45488) Quick connector release

NT379

NT636

PBIC0198E

Description

Loosening or tightening heated oxygen sensor

For 22 mm (0.87 in) width hexagon nut

Loosening or tightening rear heated oxygen sensor

a: 22 mm (0.87 in)

Removing fuel tube quick connectors in engine room (Available in SEC. 164 of PARTS CTALOG: Part No. 16441 6N210)

Commercial Service Tools ABS00326

(Kent-Moore No.) Tool name

Power tool Loosening bolts and nuts

PBIC0190E

(BT3373-F) Belt tension gauge

AMA126

Spark plug wrench Removing and installing spark plug

Description

Checking drive belt tension

NT047

Revision; 2004 April 2003 Murano

EM-7

PREPARATION

(Kent-Moore No.) Tool name

Description

Valve seat cutter set Finishing valve seat dimensions

NT048

Piston ring expander Removing and installing piston ring

NT030

Valve guide drift Removing and installing valve guide

Intake & Exhaust: a = 9.5 mm (0.374 in) dia. b = 5.5 mm (0.217 in) dia.

NT015

Valve guide reamer Reaming valve guide with 1 or hole for

oversize valve guide with 2

Intake & Exhaust:

1 = 6.0 mm (0.236 in) dia.

2 = 10.2 mm (0.402 in) dia.

(J-43897-18) (J-43897-12) Oxygen sensor thread cleaner

Anti-seize lubricant (Permatex 133AR or equivalent meeting MIL specification MIL-A-907)

NT016

Reconditioning the exhaust system thre ads before installing a new heated oxygen sensor (Use with anti-seize lubricant shown below.)

a = J-43897-18 [18 mm (0.71 in) dia.] for zirconia heated oxygen sensor b = J-43897-12 [12 mm (0.47 in) dia.] for titania heated oxygen sensor

AEM488

Lubricating heated oxygen sensor thre ad cleaning tool when reconditioning exhaust system threads

AEM489

Revision; 2004 April 2003 Murano

EM-8

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING PFP:00003

NVH Troubleshooting —Engine Noise ABS00327

SEM706G

Revision; 2004 April 2003 Murano

EM-9

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

Use the Chart Below to Help You Find the Cause of the Symptom. ABS00328

1. Locate the area where noise occurs.

2. Confirm the type of noise.

3. Specify the operating condition of engine.

4. Check specified noise source.

If necessary, repair or replace these parts.

Operating condition of engine

Location

of noise

Top of engine Rocker cover Cylinder head

Crankshaft pulley Cylinder block (Side of engine) Oil pan

Front of engine Timing chain cover

Front of engine

A: Closely related B: Related C: Sometimes related —: Not related

Type of

noise

Ticking or clicking

Rattle C A — A B C

Slap or knock

Slap or rap

Knock ABCBBB

Knock A B — A B C

T apping or ticking

Squeaking or fizzing

CreakingABABAB

Squall Creak

Before

warm-

—A—BB—

After

warm-

CA—AB—

A——BB A

AA—BBB

AB—B—C

AB—BAB

When

start-

ing

When

idling

When racing

While

driving

Source of

noise

Tappet noise

Camshaft bearing noise

Piston pin noise

Piston slap noise

Connecting rod bearing noise

Main bearing noise

Timing chain and chain tensioner noise

Drive belts (Sticking or slipping)

Drive belts (Slipping)

Water pump noise

Check item

Valve clearance EM-77

Camshaft runout Camshaft journal clearance

Piston and piston pin clearance Connecting rod bushing clearance

Piston-to-bore clearance Piston ring side clearance Piston ring end gap Connecting rod bend and torsion

Connecting rod bushing clearance (Small end) Connecting rod bearing clearance (Big end)

Main bearing oil clearance Crankshaft runout

Timing chain cracks and wear Timing chain tensioner operation

Drive belts deflection

Idler pulley bearing operation

Water pump operation

Refer-

ence page

EM-72 EM-72

EM-115 EM-117

EM-119 EM-116 EM-116 EM-116

EM-117 EM-121

EM-122 EM-121

EM-60 EM-54

EM-11

CO-20, "WATER PUMP"

Revision; 2004 April 2003 Murano

EM-10

DRIVE BELTS

DRIVE BELTS PFP:02117

Checking Drive Belts ABS00329

WARNING:

Be sure to perform when the engine is stopped.

1. Inspect belts for cracks, fraying, wear and oil. If necessary, replace.

2. Inspect drive belt deflection or tension at a point on the belt midway between pulleys.

● Inspection s hould be done only when en gine is cold, or over

30 minutes after engine is stopped.

● Measure belt tension with tension gauge (BT3373-F or equiv-

alent) at points marked shown in the figure.

● When measuring deflection, apply 98 N (10 kg, 22 lb) at the

marked point.

● Adjust if belt deflectio n exceeds the limit or if belt tension is

not within specifications.

CAUTION:

● When checking belt deflection or tension immediately after installation, first adjust it to the

specified value. Then, after turn ing the cranksha ft two turns or more, re-adjust to the s pecified value to avoid variation in deflection between pulleys.

● Tighten idler pulley lock nut by hand and measure deflec-

tion or tension without looseness.

PBIC1161E

Belt Deflection and Tension

Deflection adjustment Unit: mm (in) Tension adjustment* Unit: N (kg, lb)

Used belt

Limit After adjustment Limit After adjustment

Alternator and air conditioner compressor

Power steering oil pump

Applied pushing force

*: If belt tension gauge cannot be installed at check points show n, ch eck dr iv e belt tensi on at different locat ion on th e bel t.

7 (0.28)

11 (0.43)

98 N (10 Kg, 22 lb) —

4.2 - 4.6 (0.17 - 0.18)

7.3 - 8 (0.29 - 0.30)

New belt

3.7 - 4.1 (0.15 - 0.16)

6.5 - 7.2 (0.26 - 0.28)

294 (30, 66)

196 (20, 44)

Used belt

730 - 818

(74.5 - 83. 5,

164 - 184)

495 - 583

(50.5 - 59. 5,

111 - 131)

PBIC1162E

New belt

838 - 926

(85.5 - 94.5,

188 - 208)

603 - 691

(61.5 - 70.5,

135.6 - 155.4)

Tension Adjust me nt ABS0036V

Portion Belt tightening method for adjustment Power steering oil pump belt Adjusting bolt on power steering oil pump Alternator and air conditioner compressor belt Adjusting bolt on idler pulley

CAUTION:

● When belt is replaced with a new one, adjust it to value for “New belt” to accommodate for insuffi-

cient adaptability with pulley grooves.

Revision; 2004 April 2003 Murano

EM-11

DRIVE BELTS

● When deflection or tension of belt being used exceeds “Used belt limit”, adjust it to value for

“After adjustment of used belt”.

● When checking belt deflection or ten sio n immedia tely afte r installation, first adj ust it to the spe ci-

fied value. Then, after turni ng th e c rank shaft two turns or more, re-adjus t to th e s pec ifie d v alu e to avoid variation in deflection between pulleys.

● When installing belt, make sure that it is correctly engaged with pulley groove.

● Keep oil and water away from belt.

● Do not twist or bend belt excessively.

ALTERNATOR AND AIR CONDITIONER COMPRESSOR BELT

1. Remove splash guard (RH).

2. Loosen idler pulley lock nut (A) and adjust tension by turning adjusting bolt (B).

● For specified belt tension, refer to EM-11, "Checking Drive

Belts" .

3. Tighten lock nut (A).

: 30.4 - 39.2 N·m (3.1 - 3.9 kg-m, 23 - 28 ft-lb)

4. Tigh ten adjusting bolt (B).

: 3.9 - 6.9 N·m (0.4 - 0.7 kg-m, 35 - 61 in-lb)

PBIC1163E

POWER STEERING OIL PUMP BELT

1. Remove splash guard (RH).

2. Loosen adjusting bolt (C).

3. Loosen power steering oil pump mounting bolt (D).

● Bolt head (D) is engine rear side.

4. Adjust by turning adjusting bolt (E).

● For specified belt tension, refer to EM-11, "Checking Drive Belts" .

NOTE:

Adjusting b olt (E) is loosened with counter-clockwise rotation.

5. Tighten bolt (C), then bolt (D).

Tightening torque:

Bolt (C) : 24.5 - 31.4 N·m (2.5 - 3.2 kg-m, 18 - 23 ft-lb) Bolt (D) : 36.3 - 50.0 N·m (3.7 - 5.1 kg-m, 27 - 36 ft-lb)

Removal and Installation ABS0036W

REMOVAL

1. Remove splash guard (RH).

2. Fully loosen each b elt by f ollo wing the gu idel ines in EM- 11, " air conditioner compressor belt and then power steering oil pump belt.

CAUTION:

Grease is applied to idler pulley adjusting bolt. Be careful to keep grease away from the belt.

Tension Adjustment" . Remove alternator and

Revision; 2004 April 2003 Murano

EM-12

DRIVE BELTS

INSTALLATION

1. Install belts to pulley in reverse order of removal.

CAUTION:

● Make sure belt is correctly engaged with the pulley groove.

● Check for oil and engine coolant on belt and each pulley groove.

2. Adjust belt tension. Refer to EM-11, "

3. Tighten each adjusting bolt and n u t to the specified torque.

4. Make sure that tension of each belt is within the standard.

Tension Adjustment" .

Revision; 2004 April 2003 Murano

EM-13

AIR CLEANER AND AIR DUCT

AIR CLEANER AND AIR DUCT PFP:16500 Removal and Installation ABS0033C

1. Air cleaner case (lower) 2. Air cleaner filter 3. Air cleaner case (upper)

4. Air duct assem bl y 5. Harness bracket 6. Mass air flow sensor

7. O-ring 8. PCV hose 9. Clip

10. Radiator cover grill (RH side) 11. Air duct (inlet) 12. Radiator cover grill (LH si de)

13. Resonator 14. Bracket 15. Grommet

16. Bracket

REMOVAL

1. Remove RH and LH both side radiator cover grills.

2. Remove air duct (i nlet).

3. Disconnect harness connector from the mass air flow sensor.

4. Disconnect the tube clamp at the electr ic throttle control actuator and at the mass air flow sensor.

5. Remove PCV hose, air cleaner case (upper) with the mass air flow sensor attached.

6. Remove mass air flow sensor from air cleaner case (upper), as necessary.

CAUTION:

Handle mass air flow sensor with care.

● Do not shock it.

● Do not disassemble it.

● Do not touch its sensor.

7. Remove resonator in the fender, lifting left fender protector, as necessary.

PBIC1806E

Revision; 2004 April 2003 Murano

EM-14

AIR CLEANER AND AIR DUCT

INSTALLATION

Installation is in the reverse order of removal.

CHANGING AIR CLEANER FILTER

1. Unhook the air cleaner case (lower) side clip s and lift up the air cleaner case (upper).

2. Remove the air cleaner filter.

PBIC1165E

Revision; 2004 April 2003 Murano

EM-15

INTAKE MANIFOLD COLLECTOR

INTAKE MANIFOLD COLLECTOR PFP:14003 Removal and Installation ABS0032E

PBIC1166E

1. Electric th rott le co ntrol act uat or 2. Gasket 3. Intake manifold collector (upp er)

4. PCV hose 5. Harness bracket 6. Gasket

7. Power valve 8. VIAS control solenoid valve 9. Vacuum tank

10. Gasket 11. Intake manifold collector (lower) 12.

13. Gasket 14. EVAP hose 15. Support bracket

EVAP canister purge volume control solenoid valve

Revision; 2004 April 2003 Murano

EM-16

INTAKE MANIFOLD COLLECTOR

REMOVAL

WARNING:

To avoid the danger of being scalded, never drain the coolant when the engine is hot.

1. Remove engine cover.

2. Drain engine coolant, or when water hose is disconnected, attach plug to prevent engine coolant leakage. Refer to CO-8,

"Changing Engine Coolant" .

CAUTION:

Perform when engine is cold.

3. Remove air duct. Refer to EM-14, "

DUCT" .

AIR CLEANER AND AIR

PBIC1167E

4. Remove electric throttle control actua tor.

● Loosen bolts in the reverse order of that shown in the figure.

CAUTION:

● Handle carefully to avoid any shoc k to the electric throt-

tle control actuator.

● Do not disassemble.

SEM711G

5. Disconnect vacuum h ose and water hose from int ake manifold collector (up per and lower).

6. Disconnect EVAP canister purge volume control solen oid valve mounting bolt f rom intake manifold co llector (lower).

7. Remov e VIAS co ntrol solenoid valve an d vac u um tank.

8. Remove the RH windshield wiper arm and RH front cowl top cover. Refer to EI-21, "

COWL TOP" .

9. Disconnect the power steering hose bracket.

10. Remove intake manifold collector support bracket.

11. Remove PCV hose [between intake manifold collector (upper) and RH rocker cover].

12. Loosen bolts in reverse order of illustration with power tool, and remove intake manifold collector (upper and lower) assembly with power tool.

SEM713G

Revision; 2004 April 2003 Murano

EM-17

INTAKE MANIFOLD COLLECTOR

13. Loosen bolts in reverse order of illustration to remove intake manifold collector (upper) with power tool.

14. Remove power valve in reverse order of illustration.

SEM712G

INSPECTION AFTER REMOVAL Surface Distortion

● Using straightedge and feeler gauge, inspect the surface distor-

tion of intake manifold collector (lower).

Limit : 0.1 mm (0.004 in)

● If it exceeds the limit, replace the intake manifold collector.

INSTALLATION

● Install in the reverse order of removal paying attention to the following.

Installation of Power Valve

● Tighten in numerical order as shown in the figure.

: 17.6 - 21.6 N·m (1.8 - 2.2 kg-m, 13 - 15 ft-lb)

SEM714G

PBIC1168E

SEM714G

Revision; 2004 April 2003 Murano

EM-18

INTAKE MANIFOLD COLLECTOR

Installation of Intake Manifold Collector (Upper)

● Tighten in numerical order as shown in the figure.

: 17.6 - 21.6 N·m (1.8 - 2.2 kg-m, 13 - 15 ft-lb)

SEM712G

Installation of Intake Manifold Collector (Lower)

● Tighten in numerical order as shown in the figure.

: 17.6 - 21.6 N·m (1.8 - 2.2 kg-m, 13 - 15 ft-lb)

NOTE:

Tighten mounting bolts to secure gasket (lower), intake manifold collector (lower), gasket (upper).

SEM713G

Installation of Electric Throttle Control Actuator

● Install gasket with three protrusions for installation check facing any direction other than upward or down-

ward.

● Tighten in numerical order as shown in the figure.

: 7.2 - 9.6 N·m (0.74 - 0.97 kg-m, 64 - 84 in-lb)

● Perform the “ Thr o t tle Valve Clos ed Pos it i on Lea rni ng ” wh en har-

ness connecto r of the e lectric throttle co ntrol act uator is discon nected. Refer to EC-64, "

Learning" .

● Perform the “Idle Air Volume Learning” and “Throttle Valve

Closed Position Learning” when the electric throttle control actuator is replaced. Refer to EC-64, "

Throttle Valve Closed Position

Idle Air Volume Learning" .

SEM711G

Revision; 2004 April 2003 Murano

EM-19

INTAKE MANIFOLD

INTAKE MANIFOLD PFP:14003 Removal and Installation ABS0033D

1. Intake manifold 2. Gasket

REMOVAL

1. Release fuel pressure. Refer to EC-66, "FUEL PRESSURE RELEASE" .

2. Remove intake manifold collector (upper and lower). Refer to EM-16, "

INT AKE MANIFOLD COLLECTOR"

3. Remove fuel tube and fuel injector assembly. Refer to EM-38, "

FUEL INJECTOR AND FUEL TUBE"

4. Loosen bolts an d nuts in reverse ord er of illustration to remove intake manifold assembly with power tool.

INSPECTION AFTER REMOVAL Surface Distortion

● Using straightedge and feeler gauge, inspect the surface distor-

tion of each surface on intake manifold.

PBIC1169E

PBIC0778E

Limit : 0.1 mm (0.04 in)

● If it exceeds the limit, replace the intake manifold.

PBIC0870E

Revision; 2004 April 2003 Murano

EM-20

INTAKE MANIFOLD

INSTALLATION

Install in the reverse order of removal paying attention to the following.

Installation of Intake Manifold

● If stud bolt s were rem ov ed , i ns t al l t he m an d ti gh te n t o the to r que

specified below.

: 9.8 - 11.8 N·m (1.0 - 1.2 kg-m, 87 - 104 in-lb)

● Tighten all mounting b olts and n uts to spec ified to rque in t wo or

more steps in numerical order shown in figure.

1st step

: 4.9 - 9.8 N·m (0.5 - 1.0 kg-m, 4 - 7 ft-lb)

2nd step and after

: 26.5 - 31.4 N·m (2.7 - 3.2 kg-m, 20 - 23 ft-lb)

PBIC0778E

Revision; 2004 April 2003 Murano

EM-21

EXHAUST MANIFOLD AND THREE WAY CATALYST

EXHAUST MANIFOLD AND THREE WAY CATALYST PFP:14004 Removal and Installation ABS0032G

PBIC1170E

1. Heated oxygen sensor 1 (bank 1) 2. Exhaust manifold cover 3. Exhaust manifold (RH bank)

4. Gasket 5. Gasket 6.

7. Hea ted oxyge n sensor 2 (bank 1) 8. Support (RH) 9. Three way catalyst heat shiel d Three way catalyst (manifold) (LH

10. bank)

13. Exhaust manifold cover 14. Exhaust manifold (LH bank) 15. Heated oxygen sensor 1 (bank 2)

11. Heated oxygen sensor 2 (bank 2) 12. Support (LH)

Three way catalyst (manifold) (RH bank)

REMOVAL

WARNING:

● Perform the work when the exhaust and cooling system have completely cooled down.

● When removing the engine mo unting through bolts and nuts, lift the e ngine up slightl y for safety

with a transmission jack. Refer to EM-95, "

1. Remove the exhaust front tube. Refer to EX-3, "

2. Remove rear engine mount insulator (2WD models) (when RH exhaust manifold and three way catalyst is removed). Refer to EM-95, "

ENGINE ASSEMBLY" .

3. Remove the RH windshield wiper arm and RH front cowl top cover (when RH exhaust manifold and three way catalyst i s removed). Refer to EI-21, "

ENGINE ASSEMBLY" .

Removal and I nstallation" .

COWL TOP" .

Revision; 2004 April 2003 Murano

EM-22

EXHAUST MANIFOLD AND THREE WAY CATALYST

4. Remove heated oxygen sensor 1 and 2 on both LH and RH bank.

a. Remove harness connector of each heated oxygen sensor, and

disconnect th e harness from the bracket and middle clamp.

b. Remove both heated oxygen sensors with heated oxygen sen-

sor wrench [special service tool: KV10117100 (J3647-A) or KV10117200 (J38365)].

CAUTION:

● Be careful not to damage heated ox ygen sensor.

● Discard any heated oxygen sensor which has been

dropped from a height of more tha n 0. 5 m (19 .7 in) onto a hard surface such as a concrete floor; replace with a new sensor.

5. Remove the exhaust m anifold covers and the three way catalyst heat shields.

6. Remov e b ol ts in th e r ev ers e o rde r of illustration to re mo ve three way catalyst supports (RH and LH).

PBIC1182E

PBIC1174E

7. Remove the three way catalyst (manifold) (RH bank) and three way catalyst (manifold) (LH bank) by loosening the bolts first and then removing the nuts.

8. Remove the exhaust manifolds.

● Loosen the nuts in the reverse order as shown.

PBIC1171E

PBIC1172E

Revision; 2004 April 2003 Murano

EM-23

EXHAUST MANIFOLD AND THREE WAY CATALYST

INSPECTION AFTER REMOVAL Surface Distortion

● Use a reliable strai ghtedge and feeler gaug e to check the flat-

ness of the exhaust manifold mating surfaces.

Limit : 0.3 mm (0.012 in)

● If it exceeds the limit, replace the exhaust manifold.

PBIC1173E

INSTALLATION

Installation is in the reverse order of removal paying attention to the following.

CAUTION:

● When using the h eated oxy gen se nso r wrenc h [s pecia l se rvice tool : KV 10117200 (J38365) ], ti ghte n

to the middle of specified torque range, because the length of the tool may in crease the actual tightness. Do not tighten to th e maximum specified torque range.

● Before installing a heated oxyge n sensor, clean the threads on the exhaust manifold using the

oxygen sensor thread cleaner tool (commercial service tool), and apply anti-seize lubricant.

● Do not over-torque the heated oxygen sensors. Doing so may cause damage to the heated oxygen

sensors.

Exhaust Manifold

● Install the exhaust manifold nuts in the numerical order as

shown.

PBIC1171E

PBIC1172E

Revision; 2004 April 2003 Murano

EM-24

EXHAUST MANIFOLD AND THREE WAY CATALYST

Three Way Catalyst Supports

Install in the numerical order as shown.

: 19 - 25 N·m (2.0 - 2.5 kg-m, 14 - 18 ft-lb)

PBIC1174E

Revision; 2004 April 2003 Murano

EM-25

OIL PAN AND OIL STRAINER

OIL PAN AND OIL STRAINER PFP:11110 Removal and Installation ABS0036T

PBIC1175E

1. Gasket 2. Upper oil pan 3. Baffle plate

4. O-ring 5. Oil pressure switch 6. Relief valve

7. Oil cooler 8. Oil cooler co nnector 9. Oil filter

10. Gasket 11. Oil strainer 12. Gasket

13. Drain plug 14. Lower oil pan 15. Rear cover plate Heated oxygen sensor (bank 2) har-

16. ness clamp (2WD models)

17. Crankshaft position sensor (POS)

REMOVAL 2WD Model

WARNING:

Do not remove the oil pan until the exhaust system and cooling system have completely cooled off.

CAUTION:

When removing the upper oil pan from the engine, first remove the crankshaft position sensor (POS). Be careful not to damage sensor edges or signal plate teeth.

1. Remove splash guard (RH).

2. Remove the front RH road wheel and tire with power tool.

3. Drain engine oil. Refer to LU-8, "

4. Drain engine coolant. Refer to CO-8, "Changing Engine Coolant" .

CAUTION:

● Perform when engine is cold.

● Do not spill engine coolant on the drive belts.

5. Remove oil filter. Refer to LU-9, "

CAUTION:

Do not spill engine oil on the drive belts.

Changing Engine Oil" .

OIL FILTER" .

Revision; 2004 April 2003 Murano

EM-26

OIL PAN AND OIL STRAINER

6. Remove oil cooler and water pipes. Refer to LU-10, "OIL COOLER" .

7. Remove drive belts. Refer to EM-11, "

8. Remove A/C compressor with piping connected, and temporarily secure it aside. Refer to ATC-151,

"Components" .

9. Remove exhaust front tube. Refer to EX-3, "

10. Remo ve the he at ed ox yg en sen so r 2 ( ban k 2 ) an d r emov e t he thr e e way c atalyst (manifold) (bank 2) fr om the exhaust manifold. Refer to EM-22, "

11. Loosen lower oil pan bolts with power tool in reverse order of illustration to remove.

DRIVE BELTS" .

EXHAUST SYSTEM" .

EXHAUST MANIFOLD AND THREE WAY CATALYST" .

12. Insert a seal cutter (s pecial service tool) betw een the lower oil pan and the upper oil pan.

CAUTION:

● Be careful not to damage the mating surface.

● Do not insert a screwdriver, this will damage the ma ting

surfaces.

13. Slide seal cutter (special servi ce tool) b y tapping on the side of the tool with a hammer. Remove lower oil pan.

PBIC0782E

SEM365E

SEM960F

14. Remove oil strainer.

SEM575GA

15. Remove the oil pressure switch. Refer to LU-6, "

Inspection" .

16. Remove crankshaft position sensor (POS).

Revision; 2004 April 2003 Murano

EM-27

OIL PAN AND OIL STRAINER

CAUTION:

● Handle carefully to avoid dropping and shocks.

● Do not disassemble.

● Do not allow metal powder to adhere to magnetic part at sensor tip.

● Do not place sensors in a location where they are exposed to magnetism.

17. Remove the four engine-to-transaxle bolts.

18. Remove upper oil pan.

● Loosen bolts in reverse order as shown with power tool.

SEM949G

19. Insert an appropriate size tool into the no tc h of th e up pe r oil pan as shown (1). Pry off the upper oil pan by moving the tool up and down as shown (2).

20. Remove O-rings from the bottom of the cylinder block and oil pump body.

PBIC1636E

SEM155F

PBIC1144E

Revision; 2004 April 2003 Murano

EM-28

OIL PAN AND OIL STRAINER

21. Remove oil pan gaskets.

PBIC1145E

AWD Model

WARNING:

Do not remove the oil pan until the exhaust system and cooling system have completely cooled off.

CAUTION:

When removing the upper oil pan from the engine, first remove the crankshaft position sensor (POS). Be careful not to damage sensor edges or signal plate teeth.

1. Remov e engine assembly from vehicle, and separate fro nt suspension member, transaxle a nd transfer assembly from engine. Refer to EM-95, "

2. Install engi ne slingers. Refer to EM-100, "

3. install engine sub-attachment to right side of cylinder block, then lift engine, and mount it onto the engine stand. Refer to EM-100, "

4. Drain engine oil. Refer to LU-8, "

5. Remove oil filter. Refer to LU-9, "

CYLINDER BLOCK" .

Changing Engine Oil" .

OIL FILTER" .

CAUTION:

Do not spill engine oil on the drive belt.

6. Remove oil cooler and water pipes. Refer to LU-10, "

7. Remove the heated ox yg en senso r 2 (b an k 2) an d re mov e the t hre e wa y c at al ys t ( man ifo ld ) ( bank 2) fr om the exhaust manifold. Refer to EM-22, "

8. Loosen lower oil pan bolts with power tool in reverse order of illustration to remove.

Removal and I nstallation" .

CYLINDER BLOCK" .

OIL COOLER" .

EXHAUST MANIFOLD AND THREE WAY CATALYST" .

9. Insert a s eal cutter (special servi ce tool) between the lower oil pan and the upper oil pan.

CAUTION:

● Be careful not to damage the mating surface.

● Do not insert a screwdriver, this will damage the ma ting

surfaces.

PBIC0782E

SEM365E

Revision; 2004 April 2003 Murano

EM-29

OIL PAN AND OIL STRAINER

10. Slide seal cutter (special service tool) by tapping on the side of the tool with a hammer. Remove lower oil pan.

11. Remove oil strainer.

SEM960F

12. Remove the oil pressure switch. Refer to LU-6, "

Inspection" .

13. Remove upper oil pan.

● Loosen bolts in reverse order as shown with power tool.

14. Insert an appro priate size tool into the no tc h of th e up pe r oil pan as shown (1). Pry off the upper oil pan by moving the tool up and down as shown (2).

SEM575GA

PBIC1636E

SEM155F

Revision; 2004 April 2003 Murano

EM-30

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