Content .. 175 176 177 178 ..

Nissan Murano Z51 (2008 year). Manual - part 177

CAMSHAFT

EM-97

< DISASSEMBLY AND ASSEMBLY >

• Install camshaft bracket in original position and direction as

shown in the figure.

• Install camshaft brackets (No. 2 to 4) aligning the stamp marks

(A) as shown in the figure.

NOTE:
There are no identification marks indicating left and right for
camshaft bracket (No. 1).

• Apply liquid gasket to mating surface of camshaft bracket (No.

1) as shown on bank 1 and bank 2.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

: No. 1

: No. 2

: No. 3

: No. 4

: Bank 1

: Exhaust side

: Intake side

: Bank 2

: Intake side

: Exhaust side

: Engine front

JPBIA0258ZZ

: Bank 1

: Bank 2

: Engine front

JPBIA0272ZZ

: 8.5 mm (0.335 in)

: 2 mm (0.08 in)

: Clearance 5 mm (0.20 in)

2.0 - 2.3 mm (0.079 - 0.091 in)

: Apply liquid gasket to rear timing chain case side

JPBIA0255ZZ

Revision: 2008 October

2009 Murano

EM-98

< DISASSEMBLY AND ASSEMBLY >

CAMSHAFT

Tighten camshaft bracket bolts in the following steps, in numeri-
cal order as shown in the figure.

Tighten No. 7 to 10 in order as shown.

Tighten No. 1 to 6 in order as shown.

Tighten No. 1 to 10 in numerical order as shown.

CAUTION:

After tightening mounting bolts of camshaft brackets (No.
1), be sure to wipe off excessive liquid gasket from the
parts list below.

• Mating surface of rocker cover
• Mating surface of rear timing chain case

Tighten camshaft sensor bracket bolts in numerical order as
shown in the figure.

NOTE:
The order of tightening bolts in the same for bank 1 and bank 2.

Measure difference in levels between front end faces of cam-
shaft bracket (No. 1) and cylinder head.

• Measure two positions (both intake and exhaust side) for a

single bank.

• If the measured value is out of the standard, reinstall camshaft

bracket (No. 1).

Inspect and adjust the valve clearance. Refer to

EM-18, "Inspection and Adjustment"

Install in the reverse order of removal after this step.

Inspection

INFOID:0000000003304178

INSPECTION AFTER REMOVAL

Camshaft Runout

Put V-block on precise flat table, and support No. 2 and 4 journals of camshaft.

: Engine front

: 1.96 N·m (0.20 kg-m, 1 ft-lb)

: 5.88 N·m (0.60 kg-m, 4 ft-lb)

: 10.4 N·m (1.1 kg-m, 8 ft-lb)

: Engine front

JPBIA0257ZZ

JPBIA1960ZZ

Standard

−

0.14 to 0.14 mm (

−

0.0055 to 0.0055 in)

EMQ0044D

Revision: 2008 October

2009 Murano

CAMSHAFT

EM-99

< DISASSEMBLY AND ASSEMBLY >

CAUTION:

Never support No. 1 journal (on the side of camshaft sprocket) because it has a different diameter
from the other three locations.

Set a dial indicator vertically to No. 3 journal.

Turn camshaft to one direction with hands, and measure the
camshaft runout on a dial indicator. (Total indicator reading)

If it exceeds the limit, replace camshaft.

Camshaft Cam Height

Measure the camshaft cam height with a micrometer.

If wear exceeds the limit, replace camshaft.

Camshaft Journal Oil Clearance

CAMSHAFT JOURNAL DIAMETER

• Measure the outer diameter of camshaft journal with a micrometer

(A).

CAMSHAFT BRACKET INNER DIAMETER

• Tighten camshaft bracket bolt with the specified torque. Refer to “INSTALLATION” for the tightening proce-

dure.

• Measure inner diameter (A) of camshaft bracket with a bore gauge.

CAMSHAFT JOURNAL OIL CLEARANCE

• (Oil clearance) = (Camshaft bracket inner diameter) – (Camshaft journal diameter).

Standard and limit

: Refer to

EM-142, "Camshaft"

PBIC0929E

Standard cam height

: Refer to

EM-142, "Cam-

shaft"

(Intake and exhaust)

Cam wear limit

: Refer to

EM-142, "Cam-

shaft"

EMQ0072D

Standard and limit

: Refer to

EM-142, "Camshaft"

JPBIA0122ZZ

Standard

: Refer to

EM-142, "Camshaft"

PBIC1645E

Revision: 2008 October

2009 Murano

EM-100

< DISASSEMBLY AND ASSEMBLY >

CAMSHAFT

• If the calculated value exceeds the limit, replace either or both camshaft and cylinder head.

NOTE:
Camshaft brackets cannot be replaced as single parts, because there are machined together with cylinder
head. Replace whole cylinder head assembly.

Camshaft End Play

• Install a dial indicator in thrust direction on front end of camshaft.

Measure the end play of a dial indicator when camshaft is moved
forward/backward (in direction to axis).

• Measure the following parts if out of the limit.
- Dimension “A” for camshaft No. 1 journal

- Dimension “B” for cylinder head No. 1 journal bearing

• Refer to the standards above, and then replace camshaft and/or

cylinder head.

Camshaft Sprocket Runout

Put V-block on precise flat table, and support No. 2 and 4 journals of camshaft.

CAUTION:

Never support No. 1 journal (on the side of camshaft sprocket) because it has a different diameter
from the other three locations.

Measure the camshaft sprocket runout with a dial indicator.
(Total indicator reading)

• If it exceeds the limit, replace camshaft sprocket.

Valve Lifter

Standard and limit

: Refer to

EM-142, "Camshaft"

Standard and limit

: Refer to

EM-142, "Camshaft"

SEM864E

Standard

: 27.500 - 27.548 mm (1.0827 - 1.0846 in)

Standard

: 27.360 - 27.385 mm (1.0772 - 1.0781 in)

KBIA2404J

Limit

: Refer to

EM-142, "Camshaft"

PBIC0930E

Revision: 2008 October

2009 Murano

CAMSHAFT

EM-101

< DISASSEMBLY AND ASSEMBLY >

Check if surface of valve lifter has any wear or cracks.
• If anything above is found, replace valve lifter. Refer to

EM-142,

"Camshaft"

Valve Lifter Clearance

VALVE LIFTER OUTER DIAMETER

• Measure the outer diameter at 1/2 height of valve lifter with a

micrometer (A) since valve lifter is in barrel shape.

VALVE LIFTER HOLE DIAMETER

• Measure the inner diameter of valve lifter hole of cylinder head with

an inside micrometer.

VALVE LIFTER CLEARANCE

• (Valve lifter clearance) = (Valve lifter hole diameter) – (Valve lifter outer diameter)

• If the calculated value is out of the standard, referring to each standard of valve lifter outer diameter and

valve lifter hole diameter, replace either or both valve lifter and cylinder head.

INSPECTION AFTER INSTALLATION

Inspection of Camshaft Sprocket (INT) Oil Groove

CAUTION:

• Perform this inspection only when DTC P0011 is detected in self-diagnostic results of CONSULT-III

and it is directed according to inspection procedure of EC section. Refer to

EC-142, "Diagnosis Pro-

cedure"

• Check when engine is cold so as to prevent burns from the splashing engine oil.

Check engine oil level. Refer to

LU-7, "Inspection"

Perform the following procedure so as to prevent the engine from being unintentionally started while
checking.

Release the fuel pressure. Refer to

EC-545, "Inspection"

KBIA0182E

Standard

: Refer to

EM-142, "Camshaft"

(Intake and exhaust)

JPBIA0125ZZ

Standard

: Refer to

EM-142, "Camshaft"

(Intake and exhaust)

SEM867E

Standard

: Refer to

EM-142, "Camshaft"

(Intake and exhaust)

Revision: 2008 October

2009 Murano

EM-102

< DISASSEMBLY AND ASSEMBLY >

CAMSHAFT

Disconnect ignition coil and injector harness connectors. Refer to

EM-50, "Exploded View"

and

EM-45,

"Exploded View"

Remove intake valve timing control solenoid valve. Refer to

EM-89, "Exploded View"

Crank engine, and then check that engine oil comes out from
intake valve timing control solenoid valve hole (A). End crank
after checking.

WARNING:

Be careful not to touch rotating parts. (drive belt, idler pul-
ley, and crankshaft pulley, etc.)

CAUTION:

• Prevent splashing by using a shop cloth so as to prevent

the worker from injury from engine oil and so as to prevent engine oil contamination.

• Prevent splashing by using a shop cloth so as to prevent engine oil from being splashed to

engine and vehicle. Especially, be careful no to apply engine oil to rubber parts of drive belt,
engine mounting insulator, etc. Wipe engine oil off immediately if it is splashed.

Perform the following inspection if engine oil does not come out from intake valve timing control solenoid
valve oil hole of the cylinder head.
• Remove oil filter, and then clean it. Refer to

LU-10, "Removal and Installation"

• Clean oil groove between oil strainer and intake valve timing control solenoid valve. Refer to

LU-2,

"Engine Lubrication System"

Remove components between intake valve timing control solenoid valve and camshaft sprocket (INT),
and then check each oil groove for clogging.
• Clean oil groove if necessary. Refer to

LU-2, "Engine Lubrication System"

After inspection, install removed parts in the reverse order.

Inspection for Leakage

The following are procedures for checking fluids leakage and lubricates leakage.

• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required

quantity, fill to the specified level. Refer to

MA-15, "FOR NORTH AMERICA : Fluids and Lubricants"

(for

North America) or

MA-16, "FOR MEXICO : Fluids and Lubricants"

(for Mexico).

• Use procedure below to check for fuel leakage.
- Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-

age at connection points.

- Start engine. With engine speed increased, check again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration.

NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in the guide may
generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.

• Warm up engine thoroughly to check there is no leakage of fuel, or any oil/fluids including engine oil and

engine coolant.

• Bleed air from lines and hoses of applicable lines, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the

specified level, if necessary.

Summary of the inspection items:

*: Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.

: Valve timing control cover (bank 2)

: Engine front

JPBIA1783ZZ

Items

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Other oils and fluid*

Level

Leakage

Level

Fuel

Leakage

Revision: 2008 October

2009 Murano

OIL SEAL

EM-103

< DISASSEMBLY AND ASSEMBLY >

OIL SEAL

VALVE OIL SEAL

VALVE OIL SEAL : Removal and Installation

INFOID:0000000003304200

REMOVAL

Remove camshaft relating to valve oil seal to be removed. Refer to

EM-94, "Exploded View"

Remove valve lifters. Refer to

EM-94, "Exploded View"

Turn crankshaft until the cylinder requiring new oil seals is at TDC. This will prevent valve from dropping
into cylinder.

Remove valve collet.
• Compress valve spring with the valve spring compressor [SST:

KV10116200 (J-26336-A)] (A), the attachment [SST:
KV10115900 (J-26336-20)] (C), the adapter [SST:
KV10109220 (

—

)] (B). Remove valve collet with a magnet

hand.

CAUTION:

When working, take care not to damage valve lifter holes.

Remove valve spring retainer, and valve spring.

Remove valve oil seal using the valve oil seal puller [SST:
KV10107902 (J-38959)] (A).

INSTALLATION

Apply new engine oil on new valve oil seal joint and seal lip.

Using the valve oil seal drift [SST: KV10115600 (J-38958)] (A),
press fit valve seal to height (b) shown in the figure.
NOTE:
Dimension: Height measured before valve spring seat installa-
tion

Install in the reverse order of removal after this step.

FRONT OIL SEAL

FRONT OIL SEAL : Removal and Installation

INFOID:0000000003304201

REMOVAL

JPBIA0180ZZ

JPBIA0177ZZ

Intake and exhaust

: 14.3 - 14.9 mm (0.563 - 0.587 in)

JPBIA0178ZZ

Revision: 2008 October

2009 Murano

EM-104

< DISASSEMBLY AND ASSEMBLY >

OIL SEAL

Remove the following parts:
• Road wheel and tire (RH)
• Splash guard (RH): Refer to

EXT-23, "FENDER PROTECTOR : Exploded View"

• Drive belt: Refer to

EM-13, "Removal and Installation"

• Crankshaft pulley: Refer to

EM-53, "Exploded View"

Remove front oil seal using a suitable tool.

CAUTION:

Be careful not to damage front timing chain case and crank-
shaft.

INSTALLATION

Apply new engine oil to both oil seal lip and dust seal lip of new front oil seal.

Install front oil seal.
• Install front oil seal so that each seal lip is oriented as shown in

the figure.

• Using a suitable drift, press-fit until the height of front oil seal is

level with the mounting surface.

- Suitable drift: outer diameter 60 mm (2.36 in), inner diameter

50 mm (1.97 in).

• Check the garter spring is in position and seal lips not inverted.

CAUTION:

• Be careful not to damage front timing chain case and

crankshaft.

• Press-fit straight and avoid causing burrs or tilting oil

seal.

Install in the reverse order of removal after this step.

REAR OIL SEAL

REAR OIL SEAL : Removal and Installation

INFOID:0000000003304202

REMOVAL

Remove transaxle assembly. Refer to

TM-176, "Exploded View"

Remove drive plate. Refer to

EM-117, "Exploded View"

Remove oil pan (upper). Refer to

EM-39, "Exploded View"

SEM829E

: Oil seal lip

: Dust seal lip

: Engine inside

: Engine outside

JPBIA0054ZZ

SEM829E

Revision: 2008 October

2009 Murano

OIL SEAL

EM-105

< DISASSEMBLY AND ASSEMBLY >

Use a seal cutter (SST) to cut away liquid gasket and remove
rear oil seal retainer.

CAUTION:

Be careful not to damage mating surfaces.
NOTE:
Regard both rear oil seal and retainer an assembly.

INSTALLATION

Remove old liquid gasket on mating surfaces of cylinder block and oil pan (upper) using scraper.

Apply new engine oil to both oil seal lip and dust seal lip of new oil seal retainer.

Apply a continuous bead of liquid gasket with the tube presser
(commercial service tool) to rear oil seal retainer as shown in the
figure.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

CAUTION:

Attaching should be done within 5 minutes after coating.

Install rear oil seal retainer to cylinder block. Refer to

EM-117, "Exploded View"

• Check the garter spring is in position and seal lips not inverted.

Install in the reverse order of removal after this step.

SEM830E

2.0 - 3.0 mm (0.08 - 0.12 in)

JPBIA0542ZZ

Revision: 2008 October

2009 Murano

EM-106

< DISASSEMBLY AND ASSEMBLY >

CYLINDER HEAD

CYLINDER HEAD

Exploded View

INFOID:0000000003304157

REMOVAL

DISASSEMBLY

Oil level gauge

Cylinder head (bank 2)

Cylinder head bolt

Cylinder head (bank 1)

Cylinder head gasket (bank 1)

Cylinder head gasket (bank 2)

Refer to

EM-107

Refer to

GI-4, "Components"

for symbols in the figure.

JPBIA1748ZZ

Revision: 2008 October

2009 Murano

CYLINDER HEAD

EM-107

< DISASSEMBLY AND ASSEMBLY >

Removal and Installation

INFOID:0000000003375417

REMOVAL

Remove the following parts:
• Oil level gauge
• Intake manifold collector: Refer to

EM-29, "Exploded View"

• Rocker cover: Refer to

EM-50, "Exploded View"

• Fuel tube and fuel injector assembly: Refer to

EM-45, "Exploded View"

• Intake manifold: Refer to

EM-32, "Exploded View"

• Exhaust manifold: Refer to

EM-34, "Exploded View"

• Water inlet and thermostat assembly: Refer to

CO-23, "Exploded View"

• Water outlet, water connector, water bypass pipe, and heater pipe: Refer to

CO-25, "Exploded View"

• Timing chain and rear timing chain case: Refer to

EM-53, "Exploded View"

and

EM-89, "Exploded

View"

• Camshaft: Refer to

EM-94, "Exploded View"

Valve lifter

Valve collet

Valve spring retainer

Valve spring

Valve oil seal

Valve spring seat

Valve guide (EXH)

Spark plug

Spark plug tube

10. Cylinder head (bank 1)

11.

Valve seat (EXH)

12. Valve (EXH)

13. Valve (INT)

14. Valve seat (INT)

15. Valve guide (INT)

16. Cylinder head (bank 2)

: Apply genuine high strength thread locking sealant or equivalent.

Refer to

GI-4, "Components"

for symbols not described on the above.

JPBIA1728GB

Revision: 2008 October

2009 Murano

EM-108

< DISASSEMBLY AND ASSEMBLY >

CYLINDER HEAD

Remove cylinder head bolts in the reverse order as shown in the
figure with cylinder head bolt wrench (commercial service tool)
and power tool to remove cylinder heads (bank 1 and bank 2).

Remove cylinder head gaskets.

INSTALLATION

Install new cylinder head gaskets.

Turn crankshaft until No. 1 piston is set at TDC.
• Crankshaft key (1) should line up with the bank 1 cylinder cen-

ter line as shown in the figure.

: Bank 1

: Bank 2

: Engine front

JPBIA0172ZZ

: Bank 1 side

JPBIA1752ZZ

Revision: 2008 October

2009 Murano

CYLINDER HEAD

EM-109

< DISASSEMBLY AND ASSEMBLY >

Install cylinder head follow the steps below to tighten cylinder
head bolts in numerical order as shown in the figure with cylin-
der head bolts wrench (commercial service tool).

CAUTION:

• If cylinder head bolts reused, check their outer diameters

before installation. Refer to

EM-114, "Inspection"

• Before installing cylinder head, inspect cylinder head dis-

tortion. Refer to

EM-114, "Inspection"

Apply new engine oil to threads and seat surfaces of cylinder
head bolts.

Tighten all cylinder head bolts.

Completely loosen all cylinder head bolts.

CAUTION:

In step “c”, loosen bolts in the reverse order of that indicated in the figure.

Tighten all cylinder head bolts.

Turn all cylinder head bolts 103 degrees clockwise (angle tightening).

CAUTION:

Check the tightening angle by using the angle wrench [SST:
KV10112100 (BT8653-A)] (A). Avoid judgment by visual
inspection without.
• Check tightening angle indicated on the angle wrench indica-

tor plate.

Turn all cylinder head bolts 103 degrees clockwise again (angle
tightening).

After installing cylinder head, measure distance between front
end faces of cylinder block and cylinder head (bank 1 and bank
2).

• If measured value is out of the standard, reinstall cylinder

head.

Install in the reverse order of removal after this step.

: Bank 1

: Bank 2

: Engine front

: 98.1 N·m (10 kg-m, 72 ft-lb)

: 0 N·m (0 kg-m, 0 ft-lb)

: 39.2 N·m (4.0 kg-m, 29 ft-lb)

JPBIA0172ZZ

JPBIA0175ZZ

Standard

: 14.1 - 14.9 mm (0.555 - 0.587 in)

EMQ0662D

Revision: 2008 October

2009 Murano

EM-110

< DISASSEMBLY AND ASSEMBLY >

CYLINDER HEAD

Disassembly and Assembly

INFOID:0000000003304230

DISASSEMBLY

Remove spark plug with spark plug wrench (commercial service tool).

Remove valve lifter.
• Identify installation positions, and store them without mixing them up.

Remove valve collet.
• Compress valve spring with the valve spring compressor [SST:

KV10116200 (J-26336-A)] (A), the attachment [SST:
KV10115900 (J-26336-20)] (C) and the adapter [SST:
KV10109220 ( — )] (B). Remove valve collet with a magnet
hand.

CAUTION:

When working, take care not to damage valve lifter holes.

Remove valve spring retainer, valve spring and valve spring seat.

Push valve stem to combustion chamber side, and remove valve.
• Identify installation positions, and store them without mixing them up.

Remove valve oil seal with the valve oil seal puller [SST:
KV10107902 (J-38959)] (A).

Remove valve seat, if valve seat must be replaced.
• Bore out old seat until it collapses. Boring should not continue beyond the bottom face of the seat

recess in cylinder head. Set the machine depth stop to ensure this. Refer to

EM-144, "Cylinder Head"

CAUTION:

Prevent to scratch cylinder head by excessive boring.

Remove valve guide, if valve guide must be replaced.

To remove valve guide, heat cylinder head to 110 to 130

C (230

to 266

F) by soaking in heated oil (A).

JPBIA0180ZZ

JPBIA0177ZZ

JPBIA0184ZZ

Revision: 2008 October

2009 Murano

CYLINDER HEAD

EM-111

< DISASSEMBLY AND ASSEMBLY >

Drive out valve guide with a press [under a 20 kN (2 ton, 2.2 US
ton, 2.0 lmp ton) pressure] or a hammer and the valve guide drift
(commercial service tool).

WARNING:

Cylinder head contains heat. When working, wear protec-
tive equipment to avoid getting burned.

Remove spark plug tube if necessary.
• Using a pliers, pull spark plug tube out of cylinder head.

CAUTION:

• Take care not to damage cylinder head.
• Once removed, spark plug tube will be deformed and cannot be reused. Never remove it unless

absolutely necessary.

ASSEMBLY

If valve guide is removed in step 8 (DISASSEMBLY), install it.
Replace with oversized [0.2 mm (0.008 in)] valve guide.

Using the valve guide reamer (commercial service tool) (A),
ream cylinder head valve guide hole.

Heat cylinder head to 110 to 130

C (230 to 266

F) by soaking in

heated oil (A).

Using the valve guide drift (commercial service tool), press valve
guide from camshaft side to the dimensions as in the figure.

WARNING:

Cylinder head contains heat. When working, wear protec-
tive equipment to avoid getting burned.

SEM931C

Valve guide hole diameter (for service parts):

Intake and exhaust

: Refer to

EM-144, "Cylinder Head"

JPBIA0185ZZ

JPBIA0184ZZ

Projection (A)

Intake and exhaust

: Refer to

EM-144, "Cylinder Head"

JPBIA0186ZZ

Revision: 2008 October

2009 Murano

EM-112

< DISASSEMBLY AND ASSEMBLY >

CYLINDER HEAD

Using the valve guide reamer (commercial service tool) (A),
apply reamer finish to valve guide.

If valve seat is removed in step 7 (DISASSEMBLY), install it.
Replace with oversize [0.5 mm (0.020 in)] valve seat.

Ream cylinder head recess diameter (a) for service valve seat.

• Be sure to ream in circles concentric to valve guide center.

This will enable valve to fit correctly.

Heat cylinder head to 110 to 130

C (230 to 266

F) by soaking in

heated oil (A).

Provide valve seats cooled well with dry ice. Force fit valve seat into cylinder head.

WARNING:

Cylinder head contains heat. When working, wear protective equipment to avoid getting burned.

CAUTION:

Avoid directly touching cold valve seats.

Using the valve seat cutter set (commercial service tool) or valve
seat grinder, finish seat to the specified dimensions. Refer to

EM-144, "Cylinder Head"

CAUTION:

When using the valve seat cutter, firmly grip cutter handle
with both hands. Then, press on the contacting surface all
around the circumference to cut in a single drive. Improper
pressure on with cutter or cutting many different times may
result in stage valve seat.

Using compound, grind to adjust valve fitting.

Check again for normal contact. Refer to

EM-114, "Inspection"

Install new valve oil seals as follows:

Standard

: Refer to

EM-144,

"Cylinder Head"

(Intake and exhaust)

JPBIA0185ZZ

Oversize

: Refer to