5024A.pdf

Technical Note 5024A

FXX, and F5R or F8Q or F9Q - GXX, and G9T or

G9U - KXX, and K9K - MXX, and M9R - PXX, and

P9X - SXX, and S9U or S9W - ZXX, and ZD3

Cleaning the direct injection circuit before an

operation.

F5R - F8Q - F9Q - G9T - G9U - K9K - M9R - P9X - S9U - S9W - ZD3

Engines

Sub-section concerned: 13B

77 11 343 742

JUNE 2005

Edition Anglaise

"The repair methods given by the manufacturer in this document are based on the technical

specifications current when it was prepared.

The methods may be modified as a result of changes introduced by the manufacturer in the

production of the various component units and accessories from which his vehicles are

constructed."

All copyrights reserved by Renault.

The reproduction or translation in part of whole of the present document, as well as the use

of the spare parts reference numbering system, are prohibited without the prior written

consent of Renault.

Cleaning the direct injection circuit

before an operation.

Cleaning the direct injection circuit before an operation. ContentsPage

Contents

Page

13B

DIESEL INJECTION

Diesel injection: Precautions

for repair

13B-1

DIESEL INJECTION

Diesel injection: Precautions for repair

13B

FXX – GXX – KXX – MXX – SXX – PXX – ZXX

I - RISKS RELATING TO CONTAMINATION

A set of blanking plugs can only be used on one occa-

sion and must be thrown away afterwards: they be-

come dirty after use and cleaning them does not make

them reusable.

The high pressure direct injection system is highly sen-

sitive to contamination. The risks caused by contami-

nation are:

Plugs that are not used must also be thrown away (do

not keep them for other operations on the injection sys-

tem).

- damage to or destruction of the high pressure injec-

tion system,

-a component seizing,

Part numbers for blanking plug sets:

-a component not being properly sealed.

- F5R: 77 01 206 382

All After-Sales operations must be performed under

very clean conditions. Having carried out an operation

in good conditions means that no impurities (particles a

few microns in size) have penetrated the system during

dismantling.

- F8Q: 77 01 206 340

- F9Q: 77 01 208 229

- G9T and G9U: 77 01 208 229

The cleanliness principle must be applied from the filter

to the injectors.

- K9K (injection DELPHI ): 77 01 206 804

What are the sources of contamination?

- K9K (injection SIEMENS ): 77 01 476 857

- metal or plastic swarf,

- M9R: 77 01 209 062

- paint,

- P9X: 77 01 474 730

- fibres:

• from cardboard,

- ZD3: 77 01 208 229

• from brushes,

3 - Protective bags

• from paper,

Use plastic bags which can be repeatedly hermetically

sealed with adhesive tape. These types of bags should

be used to store parts that are to be removed and

reused. Stored parts will therefore be less subject to

the risk of impurities.

• from clothing,

• from cloth,

- foreign bodies such as hair,

- ambient air,

These bags can only be used once: once they have

been used, they are to be discarded.

- etc.

WARNING

Cleaning the engine using a high pressure washer

is prohibited because of the risk of damaging con-

nections. In addition, moisture may collect in the

connectors and create electrical connection faults.

4 - Cleaning products

Two cleaning products can be used:

- an injector cleaning product (part no. 77 11 224 188 ),

- an aerosol spray brake cleaning product (part no. 77

11 226 128 ).

1 - Cleaning cloths

Use lint free cleaning cloths (part no. 77 11 211 707 ).

When using the injector cleaning product make sure

that you also have to hand a brush in good condition

(bristles should not fall out easily) as well as a clean

container.

It is forbidden to use ordinary paper or cloth: when

used, they leave bits of fluff or fragments or paper and

thus contaminate the fuel circuit.

Each cloth can only be used once.

Note:

Use a new injector cleaning product for each opera-

tion (cleaning products that have been used

become contaminated).

2 - Blanking plugs

Blanking plugs are used to prevent impurities from en-

tering the fuel circuit once it has been opened.

13B - 1

DIESEL INJECTION

Diesel injection: Precautions for repair

13B

FXX – GXX – KXX – MXX – SXX – PXX – ZXX

II - ADVICE TO BE FOLLOWED BEFORE ANY

OPERATION

Hermetically seal the bag with adhesive tape, even if

you need to open the bag shortly afterwards: ambient

air can be a source of pollution.

1) Carry out operations in clean working areas and en-

sure that removed parts are protected from dust and

impurities by placing them in bags that can be hermeti-

cally sealed.

It is strictly forbidden to use a brush, cleaning product,

air gun, swab or standard cloth after the fuel circuit has

been opened: these items are likely to allow impurities

to enter the system.

2) Before any operation, always order the following

from the Parts Department:

If a component is to be replaced by a new one or refit-

ted after having been stored in a plastic bag, you

should only unwrap the component when it is time to

position it on the vehicle.

- une collection de bouchons de propreté neuve ,

specific to the engine,

-a sufficient number of lint free lingettes de nettoya-

ge .

IV - CLEANING

- one of two produits de nettoyage for fuel pipe

unions,

There are two procedures for cleaning the fuel circuit

before opening it for an operation.

- les pièces à remplacer systématiquement after

each removal operation; these are detailed in the

operation procedures specific to each vehicle (see

the relevant Workshop Repair Manual).

These procedures allow you to clean the fuel circuit in

a way that prevents contamination: they both produce

the same result and neither is preferred over the other.

3) Wear protective glasses with side protection in order

to avoid cleaning products coming into contact with

your eyes.

1 - Cleaning using injector cleaning product

With reference to the operation procedures specific to

the vehicle (see the relevant Workshop Repair Ma-

nual), make sure that you can access the unions to be

opened.

4) Wear protective gloves made from latex so that clea-

ning products do not come into contact with your skin

for a long time.

Protect the areas susceptible to fuel flow.

Pour the injector cleaning product into a clean contai-

ner.

Note:

If you use protective gloves made from leather,

cover them with latex gloves.

IMPORTANT

Wear latex gloves when using the cleaning product.

5) Protect the following before any operation on the in-

jection system, using, for example, plastic bags or

clean cloths:

Dip a clean brush into the container, making sure that

no bristles are left in the cleaning product.

- the accessories and timing belts,

- electrical accessories (starter, alternator, power as-

sisted steering pump, sensors and electrical connec-

tors),

IMPORTANT

Wear glasses with side protection during the opera-

tion.

- the flywheel face.

Carefully clean the unions to be opened using the

brush and injector cleaning product.

III - INSTRUCTIONS TO BE FOLLOWED DURING

THE OPERATION

Blow compressed air over the cleaned parts (tools,

workbench, parts, unions and injection system area).

Check that no bristles from the brush have come away

and that the area is clean.

Wash your hands before and during the operation.

Change the latex gloves when they become soiled or

damaged.

Wipe the cleaned sections with new cloths.

All components removed from the injection system

must be stored in a hermetically sealed plastic bag

once they have been capped.

Open the circuit at the union and fit the appropriate

blanking plugs straight away.

13B - 2

DIESEL INJECTION

Diesel injection: Precautions for repair

13B

FXX – GXX – KXX – MXX – SXX – PXX – ZXX

WARNING

To prevent impurities from entering, once the fuel

circuit has been opened, it must not be blasted with

compressed air. Only use cleaning cloths, if neces-

sary.

2 - Cleaning with brake cleaning product

With reference to the operation procedures specific to

the vehicle (see the relevant Workshop Repair Ma-

nual), make sure that you can access the unions to be

opened.

Protect the areas susceptible to fuel flow.

IMPORTANT

Wear latex gloves when using the cleaning product.

IMPORTANT

Wear glasses with side protection during the opera-

tion.

Spray the brake cleaning product on the unions to be

opened.

Carefully clean the unions to be opened using new

cloths.

Blow compressed air over the cleaned parts (tools,

workbench, parts, unions and injection system area).

Check that no bristles from the brush have come away

and that the area is clean.

Open the circuit at the union and fit the appropriate

blanking plugs straight away.

WARNING

To prevent impurities from entering, once the fuel

circuit has been opened, it must not be blasted with

compressed air. Only use cleaning cloths, if neces-

sary.

13B - 3

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: