Nissan Qashqai J11. Manual - part 69

 

  Index      Nissan     Nissan Qashqai J11 - Service and Repair Manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  67  68  69  70   ..

 

 

Nissan Qashqai J11. Manual - part 69

 

 

CYLINDER HEAD

EM-215

< UNIT DISASSEMBLY AND ASSEMBLY >

[MR20DD]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

• Fit the attachment [SST: KV10115900 (J-26336-20)] 

 in

thecenter of valve spring retainer 

 to press it.

• Tap valve stem edge lightly with a plastic hammer after instal-

lation to check its installed condition.

8.

Install valve lifter.
• Install it in the original position.

9.

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

Inspection

INFOID:0000000010715511

INSPECTION AFTER REMOVAL

Cylinder Head Bolts Outer Diameter

• Cylinder head bolts are tightened by plastic zone tightening

method. Whenever the size difference between (d1) and (d2)
exceeds the limit, replace them with a new one. 

• If reduction of outer diameter appears in a position other than (d2),

use it as (d2) point.

Cylinder Head Distortion

NOTE:
When performing this inspection, cylinder block distortion should be also checked. Refer to 

EM-231, "Inspec-

tion"

.

1.

Wipe off engine oil and remove water scale (like deposit), gasket, sealant, carbon, etc. with a scraper.

CAUTION:

Never allow gasket debris to enter passages for engine oil or water.

2.

At each of several locations on bottom surface of cylinder head,
measure the distortion in six directions using straightedge (A)
and feeler gauge (B).

• If it exceeds the limit, replace cylinder head.

INSPECTION AFTER DISASSEMBLY

VALVE DIMENSIONS

• Check the dimensions of each valve. For the dimensions, refer to 

EM-251, "Cylinder Head"

.

• If dimensions are out of the standard, replace valve and check valve seat contact. Refer to "VALVE SEAT

CONTACT".

VALVE GUIDE CLEARANCE

JPBIA4477ZZ

Limit [(d1) – (d2)]: 0.15 mm (0.0059 in)

PBIC3994E

Limit: Refer to 

EM-251, "Cylinder Head"

.

JSBIA2474ZZ

EM-216

< UNIT DISASSEMBLY AND ASSEMBLY >

[MR20DD]

CYLINDER HEAD

Valve Stem Diameter

• Measure the diameter of valve stem with micrometer (B).

Valve Guide Inner Diameter

• Measure the inner diameter of valve guide with bore gauge (A).

Valve Guide Clearance

• (Valve guide clearance) = (Valve guide inner diameter) – (Valve

stem diameter)

• If the calculated value exceeds the limit, replace valve and/or valve guide. When valve guide must be

replaced. Refer to 

EM-210, "Disassembly and Assembly"

.

VALVE SEAT CONTACT

• After confirming that the dimensions of valve guides and valves are within the specifications, perform this

procedure.

• Apply prussian blue (or white lead) onto contacting surface of valve seat to check the condition of the valve

contact on the surface.

• Check if the contact area band is continuous all around the circum-

ference.

• If not, grind to adjust valve fitting and check again. If the contacting

surface still has “NG” conditions 

 even after the recheck, replace

valve seat. Refer to 

EM-210, "Disassembly and Assembly"

.

VALVE SPRING SQUARENESS

• Set a try square (A) along the side of valve spring and rotate

spring. Measure the maximum clearance 

 between the top of

spring and try square.

• If it exceeds the limit, replace valve spring.

VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD

• Check valve spring pressure with valve spring seat installed at the

specified spring height.

CAUTION:

Never remove valve spring seat from valve spring.

• If the installation load or load with valve open is out of the stan-

dard, replace valve spring (with valve spring seat).

Standard: Refer to 

EM-251, "Cylinder Head"

.

Standard: Refer to 

EM-251, "Cylinder Head"

.

Standard and Limit: Refer to 

EM-251, "Cylinder Head"

.

JSBIA2475ZZ

: OK

JPBIA0187ZZ

: Contact

C

:  V-block

Limit

: Refer to 

EM-251, "Cylinder Head"

.

JSBIA4163ZZ

Standard

: Refer to 

EM-251, "Cylinder Head"

.

SEM113

CYLINDER HEAD

EM-217

< UNIT DISASSEMBLY AND ASSEMBLY >

[MR20DD]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

INSPECTION AFTER INSTALLATION

Inspection for Leakage

The following are procedures for checking fluids leakage, lubricates leakage, and exhaust gases 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-59, "Fluids and Lubricants"

.

• 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.
• Warm up engine thoroughly to check there is no leakage of fuel, exhaust gases, 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:

*: Power steering fluid, brake fluid, etc.

Items

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Transmission / 
transaxle fluid

AT & CVT Models

Leakage

Level / Leakage

Leakage

MT Models

Level / Leakage

Leakage

Level / Leakage

Other oils and fluids*

Level

Leakage

Level

Fuel

Leakage

Leakage

Leakage

Exhaust gases

Leakage

E M - 2 1 8

< UNIT DISASSEMBLY AND ASSEMBLY >

[MR20DD]

OIL PAN (UPPER)

OIL PAN (UPPER)

Exploded View

INFOID:0000000010715512

Removal and Installation

INFOID:0000000010715513

REMOVAL

1.

Remove oil pan (lower). Refer to 

EM-156, "Exploded View"

.

2.

Remove oil filter. Refer to 

LU-25, "Removal and Installation"

.

3.

Remove water hoses of oil cooler.

4.

Remove oil level gauge and oil level gauge guide.

5.

Remove front cover, timing chain, balancer unit timing chain, and other related parts. Refer to 

EM-183,

"Exploded View"

.

Rear oil seal

O-ring

Oil pan (upper)

Drain plug

Drain plug washer

Oil pan (lower)

O-ring

Oil level gauge guide

Oil level gauge

To oil cooler

Oil pan (lower) side

: Oil pan side

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

: Should be lubricated with oil.

: Sealing point

JPBIA6893GB

 

 

 

 

 

 

 

Content   ..  67  68  69  70   ..