f9q erg valve cleaning

© Renault s.a.s. 2005

"The repair methods given by the manufacturer in this document are based on the technicalspecifications current when it was prepared.

The methods may be modified as a result of changes introduced by the manufacturer in theproduction of the various component units and accessories from which his vehicles areconstructed."

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The reproduction or translation in part of whole of the present document, as well as the useof the spare parts reference numbering system, are prohibited without the prior writtenconsent of Renault.

77 11 335 782 APRIL 2005 Edition Anglaise

Technical Note 3916A

FXX, and F8Q or F9Q - KXX, and K9K - GXX, and G9T or G9U

Cleaning of EGR solenoid valve - F8Q, F9Q, G9T, G9U and K9K engines

Kangoo: XCXX - Clio II: XBXX - Mégane I: XAXX - Mégane II: XMXX - Laguna I: X56X - Laguna II - XGXX - Vel Satis: XJXX - Avantime: D40X - Espace IV: JK0X - Trafic II: XL0X - Master II: XDXX

Sub-section concerned: 14A

EGR solenoid valve cleaning procedure using tool Mot. 1757

Cleaning of EGR solenoid valve - F8Q,F9Q, G9T, G9U and K9K engines

Contents

Cleaning of EGR solenoid valve - F8Q, F9Q, G9T, G9U and K9K enginesContentsPage

14A ANTIPOLLUTION

Exhaust gas recirculation solenoid valve: Cleaning 14A-1

EGR solenoid valve switch: Use 14A-5

14A-1

ANTIPOLLUTIONExhaust gas recirculation solenoid valve: Cleaning

FXX, and F9Q, and 200 or 204 or 260 or 670 or 674 or 718 or 732 or 733 or 738 or 740 or 744 or 748 or 750 or 752or 754 or 760 or 762 or 772 or 774 or 782 or 790 or 796 or 800 or 820 – KXX, and K9K, and 260 or 262 or 270 or272 or 700 or 702 or 704 or 706 or 710 or 712 or 722 or 728 or 729 or 750 or 752 – GXX, and G9T, and 700 or 703or 706 or 707 or 710 or 712 or 720 or 722 or 742 or 743 or 750 – FXX, and F8Q, and 622 or 632 – GXX, and G9U,and 720 or 724 or 730 or 750 or 754

14A

Procedure to follow in the case of a clogged EGR sole-noid valve.

I - DESCRIPTION OF THE SOLENOID VALVE

The EGR solenoid valve is shown above in the activeposition: solenoid valve open.

II - CLEANING THE EGR SOLENOID VALVE

Remove the EGR solenoid valve using the tool (Mot. 1729) (see the Workshop Repair Manual for the ve-hicle concerned 14A, Emission control, Exhaust recirculation solenoid valve):

- position the spigots (7) of the tool (Mot. 1729) in themounting holes of the EGR solenoid valve,

- take care to fully drive home the spigots (7),

- turn the tool in small steps to detach the EGR sole-noid valve from its housing.

Clean the EGR solenoid valve (mechanical part on-ly) using a cleaning jet.

Special tooling required

Mot. 1729 GXX–FXX–KXX

Lever for removing theexhaust gas recircula-tion valve

Mot. 1757 FXX–GXX–KXX

EGR solenoid valveactuator

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(1) Mechanical part of the solenoidvalve

(2) Electrical part of the solenoidvalve

(3) Vent hole

(4) Lower valve

(5) Upper valve

(6) Valve shaft guide

107634

Note

It is also possible to clean the solenoid valve(mechanical par t only) using the NETTOYANTCARBU product (part number: 77 11 171 437).

14A-2



14A

STAGE 1

Protect the vent holes (3) of the solenoid valve usingadhesive tape (8).

Liberally drench the solenoid valve with the cleaningproduct whilst scrubbing it for 1 min.

STEP 2

Open the solenoid valve using the tool (Mot. 1757)(see EGR solenoid valve actuator: Use).

Clean the mechanical part of the solenoid valve by simultaneously scrubbing and drenching with clea-ning product for 2 min, paying attention to:

- the valve seats,

- the surfaces of the valves,

- the shaft guide of the valves.

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WARNING

Do not wet the electrical part of the solenoidvalve with the cleaning product.

Keep the solenoid valve tilted with the connectorat the top.

Only use brushes with plastic or non-corrosivemetal (brass) bristles.

Cleaning using hard or corrosive tools (e.g: screwdriver) can damage the valves or their shaft, and lead to:

- a leak from the valves leading to power loss,

- loss of the upper valve, leading to destruction ofthe motor.

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14A-3



14A

STEP 3

Run the solenoid valve opening/closing cycle using the tool (Mot. 1757) (see EGR solenoid valve ac-tuator: Use). During the cycle clean the mechanical part of the solenoid valve by simultaneously scrub-bing and drenching with cleaning product, paying at-tention to:

- the valve seats,

- the surfaces of the valves,

- the shaft guide of the valves.

STAGE 4

After the opening/closing cycle, open the solenoidvalve using the tool (Mot. 1757).

Scrub the upper valve over its entire surface and cir-cumference.

Scrub the lower valve around its entire circumferen-ce:

- scrub the area of the lower valve accessible throu-gh the window (9),

- pick up the upper valve by hand (do not use a tool),and turn it a 1/4 turn

- scrub the area of the lower valve accessible throu-gh the window (9),

- continue until the valve has been cleaned over itsentire circumference.

Repeat STAGE 3 twice more.

Check there are no bristles from the brush in the so-lenoid valve.

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WARNING

Only use brushes with plastic or non-corrosivemetal (brass) bristles.

14A-4



14A

Open the solenoid valve using the tool (Mot. 1757).

Use a compressed air gun to blow out the solenoidvalve.

Refit the EGR solenoid valve (see 14A, Emissioncontrol, EGR solenoid valve: Removal - refitting).

After cleaning the EGR solenoid valve, follow theprogramming procedure carried out after EGR sole-noid valve replacement (see MR Fault Finding for thevehicle concerned 13B, Diesel injection, Fault fin-ding - Component replacement).

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14A-5

ANTIPOLLUTIONEGR solenoid valve switch: Use

KXX – FXX – GXX

14A

I - DESCRIPTION

Once the EGR solenoid valve has been removed,the tool (Mot. 1757) allows it to be controlled in pre-paration for cleaning.

II - OPERATION

The tool (Mot. 1757) performs the following func-tions:

- opening the solenoid valve,

- operating the solenoid valve opening/closing cycle.

1 - Connecting the tool

Connect the connector (4) of the tool (Mot. 1757) tothe solenoid valve.

Connect the adapter (3) of the tool (Mot. 1757) to apower socket.

2 - Solenoid valve control

To open or close the EGR solenoid valve, brieflypress on the button (1).

In the open position (power supplied to the solenoidvalve), the indicator light (2) comes on.

To start the solenoid valve opening/closing cycle, hold down the button (1) for longer:

- solenoid valve vibrates for 90 s,

- the indicator light (2) flashes.

To interrupt a running cycle, press briefly on the but-ton (1).

Special tooling required

Mot. 1757 FXX–GXX–KXX

EGR solenoid valveactuator

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(1) Control button

(2) Indicator light

(3) Electrical adapter

(4) Connector

Note

The EGR solenoid valve actuator tool can beused to check the solenoid valve.

An indicator will sound in case of:

- misconnection of the tool to the solenoid valve,

- solenoid valve short circuit,

- break in the solenoid valve circuit.

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Note

The opening/closing cycle implemented by thetool makes the solenoid valve vibrate about twicea second .

f9q erg valve cleaning

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